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TA2069AF
TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic
TA2069AF
3V Stereo Headphone Amplifier (3V USE)
The TA2069AF is developed for play-back stereo headphone equipments (3V use). It is built in dual preamplifiers, dual OCL power amplifiers, motor governor, DC volume control and volume limiter etc.
Features
* Built-in preamplifier Input coupling condenser-less Built-in input capacitor for reducing buzz noise Low noise: Vni = 1.2 Vrms (typ.) Built-in power amplifier OCL (output condenser-less) Voltage gain : GV = 31dB (typ.) Built-in motor governor Current proportion type Built-in DC volume control function DC volume maximum attenuation : ATT = 82dB (typ.) Built-in volume limiter function Built-in bass boost function Operating supply voltage range (Ta = 25C) PRE + PW: VCC (opr) = 1.8~3.6V GVN: VCC (opr) = 2.1~3.6V (motor voltage = 1.8V) Low supply current (VCC = 3V, f = 1kHz, Ta = 25C, typ.) PRE + PW
Output Power 0.1mW x 2 14.2mA 12.5mA 0.5mW x 2 19.5mA 16.5mA
*
Weight: 0.32g (typ.)
* * * * *
*
No Signal RL = 16 RL = 32 9.5mA 9.5mA
GVN: ICC = 2.5mA
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TA2069AF
Block Diagram
OFF
M
ON
VREF
INB
NFB
24
23
22
PRE OUTB
21
20
PW INB
19
RF IN
18
VLIM
VCC
GVN VCC
Rt
17
16
15
14
GVN CTL
13
GVN OUT
RIPPLE PREB VOL. VREF LIMITER FILTER
VOL. PW B PREA VOL. CONTROL PW A PW C
1
PRE GND
2
INA
3
NFA
4
PRE OUTA
5
PW INA
6
VCTL
7
OUTB
8
OUTA
9
10
OUTC PW INC
11
PW GND
12
GVN GND OUTA
RL BST SW VREF BST : OFF OUTC RL OUTB
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TA2069AF
Terminal Explanation Terminal Voltage: Typical terminal voltage at no signal with test circuit
(VCC = 3V, Ta = 25C)
No. 1 2 23 3 22 4 Terminal Name PRE GND INA INB NFA NFB PRE OUTA Output of preamplifier 21 PRE OUTB 5
10K
Function The GND, except for power drive stage and motor governer stage. Input of preamplifier
Internal Circuit
RF
Terminal Voltage (V) 0
3 2
500
1.2
500
NF of preamplifier
VREF VCC
1.2
4
1.2
5
PW INA Input of power amplifier
RF
VREF
1.2
20
PW INB The terminal of DC volume control This terminal can be used also for VLIM terminal. The terminal of volume limiter level control This terminal can be used also for VCTL terminal.
6
VCTL
VCC VREF VREF
6
18
18
VLIM
7 8 9
OUTB OUTA OUTC Output of power amplifier
VCC
7
1.2
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TA2069AF
No.
Terminal Name
Function
Internal Circuit
20k VREF
Terminal Voltage (V)
10
10
PW INC
Input of center amplifier
1.2
30k VREF
2k
11 12
PW GND GVN GND
GND for power drive stage GND for motor governor stage
M
0 0
13
GVN OUT
Motor terminal
16 15 14 13
14
GVN CTL
The terminal of motor speed control
15
Rt
The terminal of amateur compensation resistor
16
GVN VCC
VCC for motor governor stage. VCC for preamplifier stage and power amplifier stage.
3
17
VCC
3
19
RF IN
24
VREF
10k
Reference voltage Preamplifier and power amplifier operate on this reference.
1.3k
4.7k
4k
Ripple filter of power supply
19
24
VCC
2.5
1.2
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TA2069AF
Application Note
1. VCC and GND This IC has two VCC terminals and three GND terminals. Pattern layout should be designed carefully to reduce the common impedance. VCC VCC (pin 17): Preamplifier stage and power amplifier stage. GVN VCC (pin 16): Motor governor stage. GND PRE GND (pin 1): Preamplifier stage and power amplifier stage except the power drive stage. PW GND (pin 11): Power drive stage of power amplifier. GVN GND (pin 12): Motor governor stage. 2. VREF It is necessary to stabilize the VREF circuit, the internal circuit operate on this reference. 3. Preamplifier Input signal should be applied to VREF standard, otherwise pop noise become bigger when VCC is turned on and off. 4. Power amplifier It is necessary to insert the coupling capacitor through the PW IN terminal. In case that DC current or DC voltage is applied to the PW IN terminal, the internal circuit has unbalance and the power amplifier doesn't operate normally.
Maximum Ratings (Ta = 25C)
Characteristic Supply voltage Power dissipation Output current (PW AMP.) Output current (GVN) Operating temperature Storage temperature PD Symbol VCC (Note 1) (Note 2) IO (PW) IO (GVN) Topr Tstg Rating 4 400 925 200 700 -25~75 -55~150 Unit V mW mA mA C C
(Note 1) IC only : Derated above Ta = 25C in the proportion 3.2mW / C (Note 2) IC + PCB (TOSHIBA typical PCB): Derated above Ta = 25C in the proportion 7.4mW / C
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TA2069AF
Electrical Characteristics Unless otherwise specified, VCC = 3V, Ta = 25C, f = 1kHz, SW2: a, SW5: a Preamplifier: Rg = 2.2k, RL = 10k, SW1: ON, SW3: b, SW4: b Power amplifier: Rg = 600, RL = 16, Vol: Max, SW1: OPEN, SW3: a, SW4: a Motor governor: Im = 100mA, SW1: OPEN, SW3: b, SW4: b
Characteristic Quiescent supply current Open loop voltage gain Closed loop voltage gain maximum output voltage Pre AMP. Total harmonic distortion Equivalent input noise voltage Cross talk Ripple rejection ratio Voltage gain 1 Channel balance Voltage gain 2 Output power 1 Output power 2 Power AMP. Total harmonic distortion Output noise voltage 1 Output noise voltage 2 Ripple rejection ratio Cross talk DC volume maximum attenuation Supply current Saturation voltage Reference voltage Motor Governor Reference voltage fluctuation 1 Reference voltage fluctuation 2 Reference voltage fluctuation 3 Current ratio Current ratio fluctuation 1 Current ratio fluctuation 2 Current ratio fluctuation 3 Symbol ICCQ GVO GVC Vom THD1 Vni CT1 RR1 GV1 CB GV2 Po1 Po2 THD2 Vno1 Vno2 RR2 CT2 ATT ICC VCE (sat) VREF VREF1 VREF2 VREF3 K K1 K2 K3 Test Circuit 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 VCC = 2.1~3.6V Im = 25~250mA Ta = -25~75C Test Condition PRE + PW + GVN Vin = 0, VOL: Min, SW4: b Vo = -10dBV, SW2: b Vo = -10dBV THD = 1% Vo = -10dBV Rg = 2.2k, SW1: OPEN BPF = 20Hz~20kHz, NAB (GV = 35dB, f = 1kHz) Vo = -10dBV fr = 100Hz, Vr = -20dBV Vo = -10dBV Vo = -10dBV, SW5: b RL = 16, THD = 10% RL = 32, THD = 10% Po = 1mW Rg = 600, SW3: b BPF = 20Hz~20kHz Rg = 600, SW3: b SW5: b, BPF = 20Hz~20kHz fr = 100Hz, Vr = -20dBV Vo = -10dBV Vo = -10dBV SW4: ab (VOL: Maxmin) Im = 0 Im = 200mA Im = 100mA VCC = 2.1~3.6V Im = 25~250mA Ta = -25~75C Min. 3/4 3/4 3/4 550 3/4 3/4 3/4 3/4 29 -1.5 3/4 17 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 0.76 3/4 3/4 3/4 34.5 3/4 3/4 3/4 Typ. 12 86 35 720 0.02 1.2 70 48 31 0 5 28 20 0.5 270 45 52 32 82 2.5 3/4 0.81 0.25 0.003 0.005 37.5 0.25 0.08 0.005 Max. 18 3/4 3/4 3/4 0.3 2.4 3/4 3/4 33 +1.5 3/4 3/4 3/4 3/4 400 3/4 3/4 3/4 3/4 4.3 0.5 0.86 3/4 3/4 3/4 40.5 3/4 3/4 3/4 %/V % / mA % / C Unit mA dB dB mVrms % Vrms dB dB dB dB dB mW mW % Vrms Vrms dB dB dB mA V V %/V % / mA % / C
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TA2069AF
Test Circuit
Rg = 600 PW INB VREF PRE OUTB 1 F 10k 1 F (a) (b) SW3b 600 VREF 4.3k (a) SW5 47 F 8.2k (b) 47 F 180 5 VCC
SW2b 220 F (b) (a) 18 k PRE INB SW1b 1000pF 1000pF 2.2k 22 F 470 470 k 8200 pF 100 F
Rg = 600 22 F
1 F
3.6 k
5 k
2.2k
Rg = 600 PRE INA
24
VREF
23
INB
22
NFB
21
PRE OUTB
20
PW INB
19
RF IN
18
VLIM
17
PW VCC
16
GVN VCC
15
Rt
14
GVN CTL
13
GVN OUT
SW1a
TA2069AF
PRE GND
INA
NFA
PRE OUTA
PW INA
VCTL
OUTB
OUTA
OUTC
PW INC
PW GND
GVN GND
1
2
3
470k
4
5
6
7
8
9
10
11
12
22F 470
8200 pF 18 k
SW4 (a) (b)
PW OUTA RL PW OUTC RL PW OUTB
(a) 220F (b) SW2a
10 k 1 F 1 F Rg = 600
10 k
PRE OUTA
(a) SW3a PW INA VREF (b)
600
VREF
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TA2069AF
Characteristic Curves Unless otherwise specified VCC = 3V, Ta = 25C, f = 1kHz Preamplifier: Rg = 2.2k, RL = 10k Power amplifier: Rg = 600, RL = 16, Vol = max. Motor governor: Im = 100mA
VO (DC) - VCC
2.5
ICCQ, ICC - VCC
20
Quiescent supply current ICCQ (mA) Supply current ICC (mA)
(V)
ICCQ (PRE + PW + GVN, Vol: MIN.)
Output DC voltage VO (DC)
15
2.0
1.5 VREF PW OUT, PRE OUT 1.0
10
5 ICC (GVN: Im = 0)
0.5
0 0
1.5
2.0
2.5
3.0
3.5
4.0
0
1.5
2.0
2.5
3.0
3.5
4.0
Supply voltage VCC
(V)
Supply voltage VCC
(V)
PRE
100
GVO, GVC - f
Vo = -10dBV 40
PRE
CT - f
Vo = -10dBV
Open loop voltage gain GVO (dB) Closed loop voltage gain GVC (dB)
80 GVO 60
CT (dB) Cross talk
10k 100k
50
60
40
20
GVC
70
0 10
100
1k
80 10
100
1k
10k
100k
Frequency f
(Hz)
Frequency f
(Hz)
PRE Maximum output voltage Vom (mVrms)
1000 THD = 1 %
Vom - VCC Total harmonic distortion THD (%)
10 3 1
PRE
THD - Vo
500
f = 10kHz 3 f = 100kHz 0.1 0.03 0.01 1 f = 1kHz
200
100 0
1.5
2.0
2.5
3.0
3.5
4.0
10
100
1000
10000
Supply voltage VCC (V)
Output voltage Vo (mVrms)
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TA2069AF
PRE
(Vrms)
20
Vni - VCC
10 20 30 40 50 60 70
PRE
fr = 100Hz Vr = -20dBV
RR - VCC
10
Vni
Equivalent input noise voltage
5
2
1
0.5 0
Ripple rejection ratio RR
1.5 2.0 2.5 3.0 3.5 4.0
(dB)
80 0
1.5
2.0
2.5
3.0
3.5
4.0
Supply voltage VCC
(V)
Supply voltage VCC
(V)
PW
60 Vo = - 10dBV
GV - f
PW
CT - f
Vo = -10dBV
0
(dB)
CT (dB)
50
10 BST = ON 20 BST = OFF
Voltage gain GV
Cross talk
10k 100k
40
BST = ON BST = OFF
30 40 50
30
20 20
100
1k
60 20
100
1
10
100
Frequency f
(Hz)
Frequency f
(Hz)
PW
100 THD = 10%
Po - VCC Total harmonic distortion THD (%)
30
PW
VCC = 3V RL = 16
THD - Po
Output power Po (mW)
10
RL = 16 32 10
3 f = 10kHz 1 100Hz 1kHz 0.2 0.2
2 0
1.5
2.0
2.5
3.0
3.5
4.0
1
10
100
Supply voltage VCC (V)
Output power Po (mW)
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TA2069AF
PW
10 Volume ratio - 10 ==
Vo - Vol.
Resistance (PIN(6) - GND) 500 Volume resistance
PW
Volume ratio 200 =
Vno - Vol.
Resistance (PIN(6) - GND) Volume resistance
(dB)
0dB = -10dBV
Output voltage Vo
- 30
Vno Output noise voltage
0.2 0.4 0.6 0.8 1
(Vrms)
100
- 50
50
- 70
20
- 90 0
10 0
0.2
0.4
0.6
0.8
1
Volume ratio
Volume ratio
PW
40 Volume ratio = 50
RR - Vol. (mV)
Resistance (PIN(6) - GND) Volume resistance 7.5
GVN
VREF, K - VCC
Ripple rejection ratio RR (dB)
fr = 100Hz, Vr = -20dBV
Reference voltage fluctuation VREF Current ratio fluctuation K
5.0
2.5
VREF
60
0.0 K - 2.5
70
- 5.0
80 0
0.2
0.4
0.5
0.8
1
- 7.5 1.5
2.0
2.5
3.0
3.5
4.0
Volume ratio
Supply voltage VCC (V)
(mV)
GVN
10
VREF, K - Im
20
GVN
ICCQ, ICC - Ta
Reference voltage fluctuation VREF Current ratio fluctuation K
5
ICCQ (mA) ICC (mA)
15 ICCQ (PRE + PW + GVN, Vol.=MIN)
VREF 0 K
Quiescent supply current Supply current
10
-5
5 ICC (GVM : Im = 0)
-10 0
50
100
150
200
250
300
0
- 20
0
20
40
60
80
Motor current
Im
(mA)
Ambient temperature Ta (C)
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TA2069AF
VO (DC) - Ta
1.5 40
PRE
GV : Vo = -10dBV Vom : THD = 1% 38
GV , Vom - Ta
800
760 Vom
Output DC voltage VO (DC)
VREF, PW OUT, PRE OUT 1
GV (dB)
36 GV 34
720
680
0.5
32
640
0
- 20
0
20
40
60
80
30
- 20
0
20
40
60
600 80
Ambient temperature Ta (C)
Ambient temperature Ta (C)
PRE
1
THD - Ta
35
PW
GV : Vo = -10dBV Po : THD = 10%
GV, Po - Ta
50
Total harmonic distortion THD (%)
Vo = -10dBV
(dB)
0.1
40 GV 30
Voltage gain GV
0.01
Po 20
0.001
- 20
0
20
40
60
80
25
- 20
0
20
40
60
10 80
Ambient temperature Ta (C)
Ambient temperature Ta (C)
PW
10 Po = 1mW
THD - Ta (mV)
6
GVN
VREF, K - Ta
Total harmonic distortion THD (%)
2 1 0.5
Reference voltage fluctuation VREF K Current ratio fluctuation
5
4
2 K 0 VREF -2
0.2
-4
0.1
- 20
0
20
40
60
80
-6
- 20
0
20
40
60
80
Ambient temperature Ta (C)
Ambient temperature Ta (C)
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Output power
30
Po
(mW)
Maximum output voltage Vom
Voltage gain
(mVrms)
(V)
TA2069AF
Application Note
VCC
0.1 F
22 F PRE INB 1000pF 1000pF 2.2k
470 k 8200 pF 18 k 470 k 1 F 100 F
4.3k
47 F
8.2k
180 1 F
M
3.6 k 5 k
VREF
2.2k
22 F
24
VREF
23
INB
22
NFB
21
PRE OUTB
20
PW INB
19
RF IN
18
VLIM
17
PW VCC
16
GVN VCC
15
Rt
14
GVN CTL
13
GVN OUT
PRE INA
TA2069AF
PRE GND
INA
NFA
PRE OUTA
PW INA
VCTL
OUTB
OUTA
OUTC
PW INC
PW GND
GVN GND
1
2
3
470k 18 k
4
1 F
5
6
33k
7
33k
8
9
10
11
12
OUTA RL OUTC
12 k 0.1 F
0.1 F
10k
VREF
0.1 F
22 F 470
8200 pF
BST SW BST : OFF
RL OUTB
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TA2069AF
Package Dimensions
Weight: 0.32g (typ.)
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TA2069AF
RESTRICTIONS ON PRODUCT USE
000707EBA
* TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical stress. It is the responsibility of the buyer, when utilizing TOSHIBA products, to comply with the standards of safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of such TOSHIBA products could cause loss of human life, bodily injury or damage to property. In developing your designs, please ensure that TOSHIBA products are used within specified operating ranges as set forth in the most recent TOSHIBA products specifications. Also, please keep in mind the precautions and conditions set forth in the "Handling Guide for Semiconductor Devices," or "TOSHIBA Semiconductor Reliability Handbook" etc.. * The TOSHIBA products listed in this document are intended for usage in general electronics applications (computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances, etc.). These TOSHIBA products are neither intended nor warranted for usage in equipment that requires extraordinarily high quality and/or reliability or a malfunction or failure of which may cause loss of human life or bodily injury ("Unintended Usage"). Unintended Usage include atomic energy control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments, medical instruments, all types of safety devices, etc.. Unintended Usage of TOSHIBA products listed in this document shall be made at the customer's own risk. * The products described in this document are subject to the foreign exchange and foreign trade laws. * The information contained herein is presented only as a guide for the applications of our products. No responsibility is assumed by TOSHIBA CORPORATION for any infringements of intellectual property or other rights of the third parties which may result from its use. No license is granted by implication or otherwise under any intellectual property or other rights of TOSHIBA CORPORATION or others. * The information contained herein is subject to change without notice.
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2002-10-30

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