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TFA9843AJ
20 W stereo power amplifier with volume control
Rev. 01 -- 28 April 2006 Preliminary data sheet
1. General description
The TFA9843AJ contains two identical audio power amplifiers. The TFA9843AJ can be used as two Single-Ended (SE) channels with a volume control. The maximum gain is 26 dB. The TFA9843AJ comes in a 9-pin DIL-bent-SIL (DBS9P) power package. The TFA9843AJ is pin compatible with the TFA9842AJ, TFA9843(B)J, TFA9842(B)J and TFA9841J. The difference between the TFA9843AJ and the TFA9843(B)J, TFA9842(B)J, TFA9841J is the functionality of pin 7. The TFA9843AJ has a volume control on pin 7 (VC). The TFA9843(B)J, TFA9842(B)J and TFA9841J have a mode select on pin 7 (MODE). The TFA9843AJ contains a unique protection circuit that is solely based on multiple temperature measurements inside the chip. This gives maximum output power for all supply voltages and load conditions with no unnecessary audio holes. Almost any supply voltage and load impedance combination can be made as long as thermal boundary conditions (number of channels used, external heatsink and ambient temperature) allow it.
2. Features
I I I I I I I I I I I 2 channel SE: 1 W to 20 W operation possibility Soft clipping Input clamps Volume control Standby and Mute mode No on or off switching plops Low standby current High supply voltage ripple rejection Outputs short-circuit protected to ground, supply and across the load Thermally protected Pin compatible with the TFA9842AJ, TFA9843(B)J, TFA9842(B)J, TFA9841J
3. Applications
I I I I I CRT TV and LCD TV Monitors PC speakers Boom box Mini and micro audio receivers
Philips Semiconductors
TFA9843AJ
20 W stereo power amplifier with volume control
4. Quick reference data
Table 1. Quick reference data VCC = 18 V; Tamb = 25 C; RL = 4 ; VI(VC) = VCC; Vi = 0 V; measured in test circuit of Figure 11; unless otherwise specified. Symbol VCC Iq ICC(stb) Po Parameter supply voltage quiescent current standby supply current output power Conditions operating VCC = 18 V; RL = VCC = 18 V; VI(VC) < 0.8 V THD = 10 %; RL = 4 ; VCC = 18 V THD = 10 %; RL = 4 ; VCC = 22 V THD Gv(max) Gv SVRR
[1] [2]
[1]
Min 9 7 25 [2]
Typ 18 60 8.5 14 0.1 26 80 60
Max 28 100 150 0.5 27 -
Unit V mA A W W % dB dB dB
total harmonic distortion maximum voltage gain voltage gain range supply voltage ripple rejection
Po = 1 W VI(VC) > 5.0V 1.5 V < VI(VC) < 5.0 V f = 1 kHz
-
A minimum load of 3 is allowed at supply voltages > 22 V. Supply voltage ripple rejection is measured at the output, with a source impedance ZS = 0 at the input and with a frequency range from 20 Hz to 22 kHz (unweighted). The ripple voltage is a sine wave with a frequency fripple and an amplitude of 300 mV (RMS), which is applied to the positive supply rail.
5. Ordering information
Table 2. Type number TFA9843AJ Ordering information Package Name DBS9P Description plastic DIL-bent-SIL power package; 9 leads (lead length 12/11 mm); exposed die pad Version SOT523 -1
TFA9843AJ_1
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Preliminary data sheet
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Philips Semiconductors
TFA9843AJ
20 W stereo power amplifier with volume control
6. Block diagram
VCC 9 IN1 4
60 k
8
OUT1
IN2
1
60 k
2
OUT2
CIV
3
VREF
SHORT-CIRCUIT AND TEMPERATURE PROTECTION VCC
VC
7
VOLUME CONTROL
0.5VCC
6
SVR
TFA9843AJ
5
001aae428
GND
Fig 1. Block diagram
7. Pinning information
7.1 Pinning
IN2 OUT2 CIV IN1 GND SVR VC OUT1 VCC
1 2 3 4 5 6 7 8 9
001aae429
TFA9843AJ
Fig 2. Pin configuration
TFA9843AJ_1
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TFA9843AJ
20 W stereo power amplifier with volume control
7.2 Pin description
Table 3. Symbol IN2 OUT2 CIV IN1 GND SVR VC OUT1 VCC Pin description Pin 1 2 3 4 5 6 7 8 9 Description input 2 loudspeaker terminal 2 common input voltage decoupling input 1 ground half supply voltage decoupling (ripple rejection) volume control input (standby, mute and volume control) loudspeaker terminal 1 supply voltage
8. Functional description
8.1 Input configuration
The input cut-off frequency is as follows:
1 f i ( -3dB ) = ---------------------------2 ( R i x C i )
(1)
Single-ended application: Ri = 60 k and Ci = 220 nF:
1 f i ( -3dB ) = ---------------------------------------------------------------- = 12 Hz 3 -9 2 ( 60 x 10 x 220 x 10 )
(2)
As shown in Equation 2, large capacitor values for the inputs are not necessary; therefore switch-on delay during charging of the input capacitors can be minimized. This results in a good low frequency response and good switch-on behavior. The TFA9843AJ has clamps on the inputs. In Standby mode the voltage on the input pins is clamped for voltages lower than -0.1 V. When the TFA9843AJ is in Mute, Volume control or Operating mode (maximum gain) the input clamp voltage is 1 V (RMS).
8.2 Power amplifier
The power amplifier is a single-ended amplifier with an all NPN output stage, capable of delivering a peak output current of 4 A.
8.2.1 Output power measurement
The output power as a function of the supply voltage is measured on the output pins at THD = 10 %; see Figure 7. The maximum output power is limited by the supply voltage of 26 V and the maximum available output current is 4 A repetitive peak current. A minimum load of 3 is required for supply voltages > 22 V; see Figure 4. The output power is measured with one channel driven.
TFA9843AJ_1
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Preliminary data sheet
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TFA9843AJ
20 W stereo power amplifier with volume control
8.2.2 Headroom
Typical CD music requires at least 12 dB (factor 15.85) dynamic headroom, compared to the average power output, for transferring the loudest parts without distortion. At VCC = 18 V and Po = 6.5 W (SE with RL = 4 ) at THD < 0.5 % (see Figure 5), the Average Listening Level (ALL) music power without any distortion yields:
6.5 P o ( ALL, SE ) = ------------ = 410 mW 15.85
(3)
The power dissipation can be derived from Figure 8 (SE) for 0 dB respectively 12 dB headroom; see Table 4. For the average listening level a power dissipation of 4.2 W can be used for a heatsink calculation.
Table 4. Headroom 0 dB 12 dB Power rating as function of headroom Power output (THD < 0.5 %) (SE) Po = 6.5 W Po(ALL) = 410 mW Power dissipation (P); both channels driven 8.2 W 4.2 W
8.3 Mode selection
The TFA9843AJ has four functional modes, which can be selected by applying the proper DC voltage to pin VC; see Table 5.
Table 5. VI(VC) 0 V to 0.8 V Mode selection Status Standby Definition
1.2 V to 1.5 V
Mute
1.5 V to 5.0 V
Volume control
5.0 V to VCC
On (maximum gain)
in this mode the current consumption is very low and the outputs are floating; the device is in Standby mode when VI(VC) < 0.8 V in this mode the amplifier is DC-biased but not operational (no audio output); this allows the input coupling capacitors to be charged to avoid plop noise; the device is in Mute mode when 1.2 V < VI(VC) < 1.5 V in this mode the volume of the amplifier can be controlled; the gain can be adjusted between the range of 1.5 V < VI(VC) < 5.0 V in this mode the amplifier has its maximum gain; the Operating mode is activated at VI(VC) > 5.0 V
8.4 Supply voltage ripple rejection
The supply voltage ripple rejection (SVRR) is measured with an electrolytic capacitor of 150 F connected to pin SVR with a bandwidth of 20 Hz to 22 kHz. The SVRR as a function of the frequency is illustrated in Figure 10. A larger capacitor value on pin SVR improves the ripple rejection behavior at the lower frequencies.
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Preliminary data sheet
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TFA9843AJ
20 W stereo power amplifier with volume control
8.5 Built-in protection circuits
The TFA9843AJ contains two types of temperature sensors; one measures the local temperatures of the power stages and one measures the global chip temperature. At a local temperature of the power stage of approximately 185 C or a global temperature of approximately 150 C this detection circuit switches off the power stages for 2 ms. When the outputs are switched off the voltage is measured on the outputs. In the event of a short-circuit to ground or to VCC the device will remain in Protection mode. In all other cases the power stages switch-on automatically and the detection will take place again; however a too high temperature will switch-off the power stages immediately. This can result in repetitive switching during too high junction temperature. This protects the TFA9843AJ against short-circuits to ground, to the supply voltage, across the load and too high chip temperatures. The protection will only be activated when necessary, so even during a short-circuit condition, a certain amount of (pulsed) current will still flow through the short-circuit (as much as the power stage can handle without exceeding the critical temperature level).
9. Limiting values
Table 6. Limiting values In accordance with the Absolute Maximum Rating System (IEC 60134). Symbol VCC VI IORM Tstg Tamb Ptot VCC(scp) Parameter supply voltage input voltage repetitive peak output current storage temperature ambient temperature total power dissipation short-circuit protection supply voltage non-operating operating Conditions operating Min -0.3 -0.3 -55 -40 Max +28 VCC + 0.3 4 +150 +85 35 26 Unit V V A C C W V
10. Thermal characteristics
Table 7. Symbol Rth(j-a) Rth(j-c) Thermal characteristics Parameter thermal resistance from junction to ambient thermal resistance from junction to case Conditions in free air both channels driven Value 40 2.0 Unit K/W K/W
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20 W stereo power amplifier with volume control
11. Static characteristics
Table 8. Static characteristics VCC = 18 V; Tamb = 25 C; RL = 4 ; VI(VC) = VCC; Vi = 0 V; measured in test circuit of Figure 11; unless otherwise specified. Symbol VCC Iq ICC(stb) VO VI(VC) Parameter supply voltage quiescent current standby supply current output voltage input voltage on pin VC On mode (maximum gain) Volume control mode Mute mode Standby mode II(VC)
[1] [2]
Conditions operating RL = VCC = 18 V; VI(VC) < 0.8 V
[2] [1]
Min 9 5.0 1.5 1.2 0 -
Typ 18 60 9 -
Max 28 100 150 VCC 5.0 1.5 0.8 20
Unit V mA A V V V V V A
input current on pin VC 0 V < VI(VC) < VCC
A minimum load of 3 is allowed at supply voltages > 22 V. The DC output voltage with respect to ground is approximately 0.5VCC.
12. Dynamic characteristics
Table 9. Dynamic characteristics SE VCC = 18 V; Tamb = 25 C; RL = 4 ; f = 1 kHz; VI(VC) = VCC; measured in test circuit of Figure 11; unless otherwise specified. Symbol Po Parameter output power Conditions THD = 10 %; RL = 4 THD = 0.5 %; RL = 4 VCC = 22 V; THD = 10 %; RL = 4 THD Gv(max) Gv Vi Zi Vn(o) SVRR total harmonic distortion maximum voltage gain voltage gain range input voltage input impedance noise output voltage supply voltage ripple rejection mute output voltage channel separation maximum voltage gain difference ZS = 0 fripple = 1 kHz fripple = 100 Hz to 20 kHz
[1] [2] [2]
Min 7 25 1.0 40 50 -
Typ 8.5 6.5 14 0.1 26 80
Max 0.5 27 -
Unit W W W % dB dB V k V dB dB V dB dB
Po = 1 W VI(VC) > 5.0 V 1.5 V < VI(VC) < 5.0 V gain = 0 dB; THD < 1 %
60 150 60 60 60 -
150 1
Vo(mute) cs |Gv(max)|
[3]
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Preliminary data sheet
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Philips Semiconductors
TFA9843AJ
20 W stereo power amplifier with volume control
[1] [2]
The noise output voltage is measured at the output in a frequency range from 20 Hz to 22 kHz (unweighted), with a source impedance ZS = 0 at the input. Supply voltage ripple rejection is measured at the output, with a source impedance ZS = 0 at the input and with a frequency range from 20 Hz to 22 kHz (unweighted). The ripple voltage is a sine wave with a frequency fripple and an amplitude of 300 mV (RMS), which is applied to the positive supply rail. Output voltage in Mute mode (VI(VC) = 1.35 V) and an input voltage of 1 V (RMS) in a bandwidth from 20 Hz to 22 kHz, including noise.
[3]
50 GV (dB) 0
001aae340
60 Po (W) 40
mce485
-50
2 20
3
-100
RL = 1
4 8
-150 0 2.0 4.0 VI(VC) (V) 6.0
0 8 12 16 20 24 VCC (V) 28
VCC = 18 V
THD = 10 %
Fig 3. Voltage gain as a function of volume control voltage
Fig 4. Output power (one channel) as a function of supply voltage for various loads
102 THD + N (%) 10
mce488
10 THD+N (%) 1
001aaa446
1
10-1 10-1
10-2 10-1
1
10
Po (W)
102
10-2 10
102
103
104
f (Hz)
105
VCC = 18 V; f = 1 kHz; RL = 4
VCC = 18 V; Po = 1 W; RL = 4
Fig 5. Total harmonic distortion-plus-noise as a function of output power
Fig 6. Total harmonic distortion-plus-noise as a function of frequency
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Preliminary data sheet
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TFA9843AJ
20 W stereo power amplifier with volume control
50 Po (W) 40
mce491
10 Ptot (W) 8
mce507
30
6
20
4
10
2
0 8 12 16 20 24 28 VCC (V)
0 0 4 8 12 16 Po (W) 20
THD = 10 %; RL = 4 ; f = 1 kHz
VCC = 18 V; RL = 4
Fig 7. Output power as a function of supply voltage
Fig 8. Total power dissipation as a function of channel output power per channel (worst case, both channels driven)
0 cs (dB) -20
mce495
0 SVRR (dB) -20
mce497
-40 -40 -60 -60
-80
-100 10
102
103
104 f (Hz)
105
-80 10
102
103
104
f (Hz)
105
VCC = 18 V; RL = 4
VCC = 18 V; ZS = 0 ; Vripple = 300 mV (RMS); a bandpass filter of 20 Hz to 22 kHz has been applied; inputs short-circuited.
Fig 9. Channel separation as a function of frequency (no bandpass filter applied)
Fig 10. Supply voltage ripple rejection as a function of frequency
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20 W stereo power amplifier with volume control
13. Application information
13.1 Application diagrams
13.1.1 Single-ended application
VCC VCC 9
220 nF 100 nF 1000 F
IN1 4
60 k
8 OUT1
1000 F
Vi
+ -
RL 4
220 nF
IN2 1
60 k
2 OUT2
1000 F
Vi
- + -
RL 4
CIV 3
VREF
SHORT-CIRCUIT AND TEMPERATURE PROTECTION VCC
VC 7
VOLUME CONTROL
MICROCONTROLLER
0.5VCC
TFA9843AJ
6 SVR
22 F
10 F
150 F
5
001aae430
GND
Fig 11. SE application diagram
Remark: By switching inductive loads, the output voltage can rise beyond the maximum supply voltage of 28 V. At high supply voltage it is recommended to use (Schottky) diodes between the supply voltage and ground.
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20 W stereo power amplifier with volume control
13.1.2 Volume control drive options
VCC
R1 10 k T1 D1 5.6 V
5V
R2 1 k R3 1 k
GND
R4
VC
1 k T3 C1 10 F
PWM 3.3 V
R5 T2 1 k
001aae337
Fig 12. Volume control drive circuit with 3.3 V PWM
PWM 5V
R4
VC
1 k C1 10 F
001aae338
Fig 13. Volume control drive circuit with 5 V PWM
VCC
R1 10 k T1 D1 10 V R5
VC
16 k R6 16 k C1 10 F
001aae339
Fig 14. Volume control drive circuit with potentiometer
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20 W stereo power amplifier with volume control
13.2 Printed-circuit board
13.2.1 Layout and grounding
To obtain a high-level system performance, certain grounding techniques are essential. The input reference grounds have to be tied with their respective source grounds and must have separate tracks from the power ground tracks; this will prevent the large output signal currents from interfering with the small AC input signals. The small-signal ground tracks should be physically located as far as possible from the power ground tracks. Supply and output tracks should be as wide as possible for delivering maximum output power.
AUDIO POWER CS NIJMEGEN
PF / 3002 .naJ 72
TVA
TFA9843J
CIV
22 F MODE
Fig 15. Printed-circuit board layout (single-sided); components view
13.2.2 Power supply decoupling
Proper supply bypassing is critical for low-noise performance and high supply voltage ripple rejection. The respective capacitor location should be as close as possible to the device and connected to the power ground. Proper power supply decoupling also prevents unwanted oscillations. For suppressing higher frequency transients (spikes) on the supply rail a capacitor with low ESR (typical 100 nF) has to be placed as close as possible to the device. For suppressing lower frequency noise and ripple signals, a large electrolytic capacitor (e.g. 1000 F or greater) must be placed close to the device. The bypass capacitor connected to pin SVR reduces the noise and ripple on the mid rail voltage. For good THD and noise performance, a low ESR capacitor is recommended.
BTL1/2
1000 F 220 nF
1
100 nF
1000 F 220 nF
1000 F
-SE1+
SVR
-SE2+ CIV
150 F
SVR
SGND +VP IN2+ IN1+
10 k 10 k
SB ON MUTE
mce506
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20 W stereo power amplifier with volume control
13.3 Thermal behavior and heatsink calculation
The measured maximum thermal resistance of the IC package, Rth(j-mb), is 2.0 K/W. A calculation for the heatsink can be made, with the following parameters: Tamb(max) = 60 C (example) VCC = 18 V and RL = 4 (SE) Tj(max) = 150 C (specification) Rth(tot) is the total thermal resistance between the junction and the ambient including the heatsink. This can be calculated using the maximum temperature increase divided by the power dissipation: Rth(tot) = (Tj(max) - Tamb(max))/P At VCC = 18 V and RL = 4 (2 x SE) the measured worst case sine wave dissipation is 8.4 W; see Figure 8. For Tj(max) = 150 C the temperature raise, caused by the power dissipation, is: 150 - 60 = 90 C: P x Rth(tot) = 90 C Rth(tot) = 90/8.4 K/W = 10.7 K/W Rth(h-a) = Rth(tot) - Rth(j-mb) = 10.7 K/W - 2.0 K/W = 8.7 K/W This calculation is for an application at worst case (stereo) sine wave output signals. In practice music signals will be applied, which decreases the maximum power dissipation to approximately half of the sine wave power dissipation; see Section 8.2.2. This allows the use of a smaller heatsink: P x Rth(tot) = 90 C Rth(tot) = 90/4.2 K/W = 21.4 K/W Rth(h-a) = Rth(tot) - Rth(j-mb) = 21.4 K/W - 2.0 K/W = 19.4 K/W
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Preliminary data sheet
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Philips Semiconductors
TFA9843AJ
20 W stereo power amplifier with volume control
150
(1) (2) (3)
mce504
(4)
Tj (C)
100
(5)
50
0 8 12 16 20 24 VCC
(V)
28
(1) RL = 2 (2) RL = 4 (3) RL = 6 (4) RL = 8 (5) RL = 16 2 x SE loads; Tamb = 25 C; external heatsink of 10 K/W; music signals.
Fig 16. Junction temperature as a function of supply voltage
14. Test information
14.1 Quality information
The General Quality Specification for Integrated Circuits, SNW-FQ-611 is applicable.
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20 W stereo power amplifier with volume control
15. Package outline
DBS9P: plastic DIL-bent-SIL power package; 9 leads (lead length 12/11 mm); exposed die pad SOT523-1
non-concave x Eh
q1
Dh D D1 P k view B: mounting base side A2 q2
E
B
q
L2 L
L3
L1
1 Z e DIMENSIONS (mm are the original dimensions) UNIT A2(2) bp mm c D(1) D1(2) Dh E(1) Eh e e1
9 wM 0 5 scale e1 e2 k 3 2 L L1 L2 L3 4.5 3.7 m 2.8 P Q q q1 q2 v w x Z(1) 1.65 1.10 10 mm Q m e2 c vM
bp
2.7 0.80 0.58 13.2 2.3 0.65 0.48 12.8
6.2 14.7 3.5 2.54 1.27 5.08 3.5 5.8 14.3
12.4 11.4 6.7 11.0 10.0 5.5
3.4 1.15 17.5 4.85 3.8 3.1 0.85 16.3 3.6
0.8 0.3 0.02
Notes 1. Plastic or metal protrusions of 0.25 mm maximum per side are not included. 2. Plastic surface within circle area D1 may protrude 0.04 mm maximum. OUTLINE VERSION SOT523-1 REFERENCES IEC JEDEC JEITA EUROPEAN PROJECTION ISSUE DATE 00-07-03 03-03-12
Fig 17. Package outline SOT523-1 (DBS9P)
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20 W stereo power amplifier with volume control
16. Soldering
16.1 Introduction to soldering through-hole mount packages
This text gives a brief insight to wave, dip and manual soldering. A more in-depth account of soldering ICs can be found in our Data Handbook IC26; Integrated Circuit Packages (document order number 9398 652 90011). Wave soldering is the preferred method for mounting of through-hole mount IC packages on a printed-circuit board.
16.2 Soldering by dipping or by solder wave
Driven by legislation and environmental forces the worldwide use of lead-free solder pastes is increasing. Typical dwell time of the leads in the wave ranges from 3 seconds to 4 seconds at 250 C or 265 C, depending on solder material applied, SnPb or Pb-free respectively. The total contact time of successive solder waves must not exceed 5 seconds. The device may be mounted up to the seating plane, but the temperature of the plastic body must not exceed the specified maximum storage temperature (Tstg(max)). If the printed-circuit board has been pre-heated, forced cooling may be necessary immediately after soldering to keep the temperature within the permissible limit.
16.3 Manual soldering
Apply the soldering iron (24 V or less) to the lead(s) of the package, either below the seating plane or not more than 2 mm above it. If the temperature of the soldering iron bit is less than 300 C it may remain in contact for up to 10 seconds. If the bit temperature is between 300 C and 400 C, contact may be up to 5 seconds.
16.4 Package related soldering information
Table 10. Package CPGA, HCPGA DBS, DIP, HDIP, RDBS, SDIP, SIL PMFP[2]
[1] [2]
Suitability of through-hole mount IC packages for dipping and wave soldering methods Soldering method Dipping suitable Wave suitable suitable[1] not suitable
For SDIP packages, the longitudinal axis must be parallel to the transport direction of the printed-circuit board. For PMFP packages hot bar soldering or manual soldering is suitable.
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20 W stereo power amplifier with volume control
17. Revision history
Table 11. Revision history Release date 20060428 Data sheet status Preliminary data sheet Change notice Supersedes Document ID TFA9843AJ_1
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Preliminary data sheet
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20 W stereo power amplifier with volume control
18. Legal information
18.1 Data sheet status
Document status[1][2] Objective [short] data sheet Preliminary [short] data sheet Product [short] data sheet
[1] [2] [3]
Product status[3] Development Qualification Production
Definition This document contains data from the objective specification for product development. This document contains data from the preliminary specification. This document contains the product specification.
Please consult the most recently issued document before initiating or completing a design. The term `short data sheet' is explained in section "Definitions". The product status of device(s) described in this document may have changed since this document was published and may differ in case of multiple devices. The latest product status information is available on the Internet at URL http://www.semiconductors.philips.com.
18.2 Definitions
Draft -- The document is a draft version only. The content is still under internal review and subject to formal approval, which may result in modifications or additions. Philips Semiconductors does not give any representations or warranties as to the accuracy or completeness of information included herein and shall have no liability for the consequences of use of such information. Short data sheet -- A short data sheet is an extract from a full data sheet with the same product type number(s) and title. A short data sheet is intended for quick reference only and should not be relied upon to contain detailed and full information. For detailed and full information see the relevant full data sheet, which is available on request via the local Philips Semiconductors sales office. In case of any inconsistency or conflict with the short data sheet, the full data sheet shall prevail.
malfunction of a Philips Semiconductors product can reasonably be expected to result in personal injury, death or severe property or environmental damage. Philips Semiconductors accepts no liability for inclusion and/or use of Philips Semiconductors products in such equipment or applications and therefore such inclusion and/or use is for the customer's own risk. Applications -- Applications that are described herein for any of these products are for illustrative purposes only. Philips Semiconductors makes no representation or warranty that such applications will be suitable for the specified use without further testing or modification. Limiting values -- Stress above one or more limiting values (as defined in the Absolute Maximum Ratings System of IEC 60134) may cause permanent damage to the device. Limiting values are stress ratings only and operation of the device at these or any other conditions above those given in the Characteristics sections of this document is not implied. Exposure to limiting values for extended periods may affect device reliability. Terms and conditions of sale -- Philips Semiconductors products are sold subject to the general terms and conditions of commercial sale, as published at http://www.semiconductors.philips.com/profile/terms, including those pertaining to warranty, intellectual property rights infringement and limitation of liability, unless explicitly otherwise agreed to in writing by Philips Semiconductors. In case of any inconsistency or conflict between information in this document and such terms and conditions, the latter will prevail. No offer to sell or license -- Nothing in this document may be interpreted or construed as an offer to sell products that is open for acceptance or the grant, conveyance or implication of any license under any copyrights, patents or other industrial or intellectual property rights.
18.3 Disclaimers
General -- Information in this document is believed to be accurate and reliable. However, Philips Semiconductors does not give any representations or warranties, expressed or implied, as to the accuracy or completeness of such information and shall have no liability for the consequences of use of such information. Right to make changes -- Philips Semiconductors reserves the right to make changes to information published in this document, including without limitation specifications and product descriptions, at any time and without notice. This document supersedes and replaces all information supplied prior to the publication hereof. Suitability for use -- Philips Semiconductors products are not designed, authorized or warranted to be suitable for use in medical, military, aircraft, space or life support equipment, nor in applications where failure or
18.4 Trademarks
Notice: All referenced brands, product names, service names and trademarks are the property of their respective owners.
19. Contact information
For additional information, please visit: http://www.semiconductors.philips.com For sales office addresses, send an email to: sales.addresses@www.semiconductors.philips.com
TFA9843AJ_1
(c) Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Preliminary data sheet
Rev. 01 -- 28 April 2006
18 of 19
Philips Semiconductors
TFA9843AJ
20 W stereo power amplifier with volume control
20. Contents
1 2 3 4 5 6 7 7.1 7.2 8 8.1 8.2 8.2.1 8.2.2 8.3 8.4 8.5 9 10 11 12 13 13.1 13.1.1 13.1.2 13.2 13.2.1 13.2.2 13.3 14 14.1 15 16 16.1 16.2 16.3 16.4 17 18 18.1 18.2 18.3 18.4 General description . . . . . . . . . . . . . . . . . . . . . . 1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Quick reference data . . . . . . . . . . . . . . . . . . . . . 2 Ordering information . . . . . . . . . . . . . . . . . . . . . 2 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Pinning information . . . . . . . . . . . . . . . . . . . . . . 3 Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 4 Functional description . . . . . . . . . . . . . . . . . . . 4 Input configuration . . . . . . . . . . . . . . . . . . . . . . 4 Power amplifier . . . . . . . . . . . . . . . . . . . . . . . . . 4 Output power measurement . . . . . . . . . . . . . . . 4 Headroom . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Mode selection . . . . . . . . . . . . . . . . . . . . . . . . . 5 Supply voltage ripple rejection . . . . . . . . . . . . . 5 Built-in protection circuits . . . . . . . . . . . . . . . . . 6 Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . . 6 Thermal characteristics. . . . . . . . . . . . . . . . . . . 6 Static characteristics. . . . . . . . . . . . . . . . . . . . . 7 Dynamic characteristics . . . . . . . . . . . . . . . . . . 7 Application information. . . . . . . . . . . . . . . . . . 10 Application diagrams . . . . . . . . . . . . . . . . . . . 10 Single-ended application . . . . . . . . . . . . . . . . 10 Volume control drive options. . . . . . . . . . . . . . 11 Printed-circuit board . . . . . . . . . . . . . . . . . . . . 12 Layout and grounding . . . . . . . . . . . . . . . . . . . 12 Power supply decoupling . . . . . . . . . . . . . . . . 12 Thermal behavior and heatsink calculation . . 13 Test information . . . . . . . . . . . . . . . . . . . . . . . . 14 Quality information . . . . . . . . . . . . . . . . . . . . . 14 Package outline . . . . . . . . . . . . . . . . . . . . . . . . 15 Soldering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Introduction to soldering through-hole mount packages . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Soldering by dipping or by solder wave . . . . . 16 Manual soldering . . . . . . . . . . . . . . . . . . . . . . 16 Package related soldering information . . . . . . 16 Revision history . . . . . . . . . . . . . . . . . . . . . . . . 17 Legal information. . . . . . . . . . . . . . . . . . . . . . . 18 Data sheet status . . . . . . . . . . . . . . . . . . . . . . 18 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 19 20 Contact information . . . . . . . . . . . . . . . . . . . . 18 Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Please be aware that important notices concerning this document and the product(s) described herein, have been included in section `Legal information'.
(c) Koninklijke Philips Electronics N.V. 2006.
All rights reserved.
For more information, please visit: http://www.semiconductors.philips.com. For sales office addresses, email to: sales.addresses@www.semiconductors.philips.com. Date of release: 28 April 2006 Document identifier: TFA9843AJ_1

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