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TELEFUNKEN Semiconductors
TDA4454
Multistandard VIF Amplifier and PLL Demodulator
Application
Monolithic integrated circuit for vision IF signal processing in multistandard TV and VTR sets.
Description
This multistandard video IF processing circuit with PLL picture carrier regeneration gives a high performance of linear video demodulation. The IF signal is internally fed via a 3-stage controlled wideband amplifier to the video demodulator and the phase detector. The phase detector compares the phase of IF signal (0) with the output signal of the VCO (90) and sets the VCO frequency accordingly. A lock detector switches the PLL loop filter according to the state of the PLL (locked-PLL slow, unlocked-PLL fast). A second output of the VCO (0) provides the reference carrier for the video demodulator. The polarity of the demodulator can be inverted by the standard switch (Pin 10), so that negative or positive modulated IF signals are always available with the same polarity at the demodulator output. The demodulated video signal is filtered, amplified and fed via an interference limiter to the video output (Pin 6). The standard switch also determines the clamp level of the video amplifier and the required IF-AGC mode. In the standard B/G mode the sync peak value is the criterion for a fast charge and discharge. In the standard L mode on the other hand, fast AGC action is achieved by charging at peak white level and discharging by the averaged video signal (time constant on Pin 7). The response level for discharge has a hysteresis. In the D2MAC mode a similar function is applied to achieve the AGC, but with different threshold levels. An overload detector prevents the PLL becoming unlocked by large IF input signals. To achieve a delayed tuner-AGC action, the current output (Pin 3) can be adjusted with a resistor at Pin 2.
Features
D Suitable for standard B/G, L and D2MAC, processes
negative and positive modulated IF-signals with equal polarity of the output signal
D D2MAC: fast AGC acting on peak level with
controlled capacitor discharge
D High performance video demodulator with PLL
picture carrier regeneration
D Output for delayed tuner-AGC, take over point
adjustable
D Extended video bandwidth (12 MHz) for the demodulation of amplitude modulated MAC-signals
D High input sensitivity D Ultra white and ultra black limiting D Supply voltage range 6.8 to 13 V D Low power consumption D ESD protection
D Standard B/G: AGC acting on the sync peak pulse D Standard L: fast AGC acting on peak white level with
average value controlled capacitor discharge and reference hysteresis
Package Options
Case: 16-pin DIL plastic
Rev. A1: 04.05.1995
Preliminary Information
1 (11)
TDA4454
Block Diagram
Loop filter 12 11 8 VCO Tank 9
TELEFUNKEN Semiconductors
93 7633
10 Standard switch
Lock detector 16 IF input 1
Video
VCO
B/G L D2MAC RO
=
+
9 0 Interference rejection Overload detector B/G
6 Video output
+/ - 4 Tuner AGC 2 Tuner AGC take over 5 IF AGC 4
D2MAC 14 + VS 7 Average ( only L, D2MAC ) 13 Int. Ref
L
15
Pin Description
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3 4, 15 5 6 7 2 (11)
Pin 1, 16 2
Symbol
Function IF input Tuner AGC adjustment (turn over point) Delayed tuner AGC current Ground IF AGC time constant Video output Video averaging for standard L and D2MAC
Pin 8, 9 10 11 12 13 14
Symbol
Function VCO circuit Standard switch PLL loop filter PLL time constant switch Reference voltage Supply voltage
Preliminary Information
Rev. A1: 04.05.1995
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*)
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External Voltage Thermal Resistance
Reference point Pin 4, unless otherwise specified
Rev. A1: 04.05.1995 Pin 1-16 2 3 5 6 7 8-9 10 11 12 13 14 Parameters
Absolute Maximum Ratings
TELEFUNKEN Semiconductors
Parameters Junction ambient (when soldered to PCB)
Supply voltage Pin 14 Supply current Pin 14 Output current Pin 6 Maximum power dissipation Junction temperature Ambient temperature during operation Storage temperature
min (Vs, xV): the lesser of the two values is the lower limit.
0 Vpin min (Vs, 8 V) 0 Vpin Vs 0 Vpin min (Vs, 10 V) 0 Vpin min (Vs, 10 V) 0 Vpin 6 V 0 Vpin min (Vs, 8 V) 0 Vpin Vs 0 Vpin Vs 0 Vpin min (Vs, 7.5 V) 0 Vpin Vs 0 Vpin Vs 6.8 V Vpin Vs
v v v v v v v v v v v
v
Preliminary Information
v v v v v v v v v v v
v
Symbol RthJA
Symbol Vs IS Iout P Tj Tamb Tstg
Voltage Range *)
Value 6.8 to 13.0 55 5.0 720 +125 -25 to +85 -25 to +125
Value 60
TDA4454
Unit K/W
Unit V mA mA mW C C C
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Vs = 8 V, Tamb = 25C, reference point Pin 4, unless otherwise specified
Electrical Characteristics
TDA4454
4 (11)
Parameters DC-supply Supply voltage Supply current IF-amplifier Input sensitivity Input impedance Input capacitance IF-AGC IF gain control range Response time, standard L AGC capacitor Average capacitor Tuner-AGC Available tuner-AGC current Automatic turn over point PLL PLL capture range VCO-tuning range VCO-tuning sensitivity Video demodulator output Composite video output signal - standard B/G Video output signal standard L Difference of the video signals Ultra white level, standard B/G Ultra black level, stand. L Supply voltage influence on the ultra black level (B/G) Supply voltage influence on the ultra black level (L) Video bandwidth (-3 dB) Video frequency response over the AGC range Differential gain error Differential phase error Video demodulator output Sound chroma beat (1.07 MHz intermodulation) related to demodulated auxiliary colour carrier)
Pin 6 Picture carrier = 0 dB Colour carrier = -6 dB Sound carrier = -24 dB
Zero carrier level
Zero carrier level
Standard B/G and L
Note 5
Note 4
See note 1
Pins 1-16 Sync peak value, B/G
Test Conditions / Pins Pin 14
Preliminary Information
Pin 6 Pins 8-9, 11, 12 Pins 2 and 3 Pins 5 and 7 Symbol
Dfcap Dfvco Df / Du
DVout
Gv,tun see note 2
DV/V
DV/V
Gv tAGC C5 C7
Vout
3.0 see note 3 Vout 1.8
DG DF
aIM
DB
Vin Rin Cin
V6
V6
Vs Is
I3
B
Min.
1.2
6.8
52
12
60
TELEFUNKEN Semiconductors
1.5 3.0 4.5
Typ.
0.5
1.9 0.5
4.2
1.4
2.0
4,7 68
80 1.2 2
8.0 45
65
66
3 3
4
Rev. A1: 04.05.1995 Max. 13.0 55 120 2.0 1.6 2.2 10 10 MHz MHz kHz/mV Veff kW pF MHz dB dB sec F nF %/V V %/V Unit Vpp Vpp mA V mA % deg dB % V dB
TELEFUNKEN Semiconductors
Parameters IF residual voltage f = 38.9 MHz f = 77.8 MHz Upsetting factor of sync pulse in the AGC range Tilt of half picture between black and white Ultra black limiting threshold Ultra white limiting threshold Standard switch Control voltage B/G Control voltage L Control voltage D2MAC Test Conditions / Pins Symbol Vres1 Vres2 Min. Typ. 2 5 3 5
TDA4454
Max. Unit mV mV % %
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DVsync
Vsync Standard L 10 Below sync level
DVlim1 DVlim2
Vsw1 Vsw2 Vsw3
250 500
mV mV
Above ultra white level Pin 10
Note 6
2.5 0 5.0
4.0 1.5 Vs
V V V
Notes
Alignment of the VCO
1. A peak white value for at least 10 s must be transmitted for each complete frame 2. Loop filter: R1 = 500 W - 1 k, C1 = 0.47 F Capacitor VCO circuit: CVCO = 27 - 47 pF
1. Apply 4.5 V to Pin 5, to disable the broadband amplifier. 2. Measure the dc-voltage at Pin 11 (phase detector). 3. Apply a 38.9 MHz unmodulated carrier signal to the IF input (Pins 1-16); adjust the input level so that the AGC voltage at Pin 5 is between 2.0 V and 2.5 V. 4. Adjust the VCO circuit until at Pin 11 is the same dc-voltage as measured in step 2.
3. Pin 6 unloaded 4. Residual carrier: 10% carrier amplitude 5. Blanking level: 30% carrier amplitude 6. Without control voltage at Pin 10 - standard B/G is automatically selected
Rev. A1: 04.05.1995
Preliminary Information
5 (11)
TDA4454
Pin Related Internal Circuits
TELEFUNKEN Semiconductors
1 16
1.2 kW
1.2 kW
50 W 3 kW
93 7634 93 7637
3 kW 5
Figure 4. Pin 5
93 7635
Figure 1. Pin 1 - 16
6
3 kW 2 2 kW
93 7638
Figure 2. Pin 2 Figure 5. Pin 6
93 7636
3
7 7 kW
93 7639
Figure 3. Pin 3 Figure 6. Pin 7
6 (11)
Preliminary Information
Rev. A1: 04.05.1995
TELEFUNKEN Semiconductors
TDA4454
Pin Related Internal Circuits (Continued)
8
12
9
93 7643
93 7640
Figure 7. Pin 8 - 9 Figure 10. Pin 12
12.5 kW
12.5 kW
13
300 W 10 Figure 8. Pin 10
93 7641
12 kW
93 7644
1 kW
12 kW
2.7 V
Figure 11. Pin 13 11 Figure 9. Pin 11
93 7642
Rev. A1: 04.05.1995
Preliminary Information
7 (11)
TDA4454
IF-AGC, Switching Thresholds
93 7645
TELEFUNKEN Semiconductors
4.2 V Ultra white level: zero carrier 4.0 V White level: 10 % carrier
2.0 V Sync. peak level: 100% carrier (charge / discharge threshold)
Figure 12. B/G-standard (neg. modulated)
93 7646
4.0 V Peak level: 100 % carrier (charge threshold)
[ 2.4 V
Average discharge threshold
2.0 V Sync. peak level :
v 6 % carrier
1.9 V Ultra black level: zero carrier
Figure 13. L-standard (pos. modulated)
93 7647
[ 4.1 V Average discharge threshold
4.2 V 4.0 V DC value: zero carrier White level: 10 % carrier Analog: Chrominance Diff.: Signal Analog: Luminance Signal
Dig.: Sound +Sync.
2.0 V
Figure 14. D2MAC-standard (neg. modulated)
Black level: 100 % carrier (charge threshold)
8 (11)
Preliminary Information
Rev. A1: 04.05.1995
TELEFUNKEN Semiconductors
TDA4454
+VS 22 mH 10 mF R1 4.7 mF 1 kW C1 470 nF 13 12 11 10 9 CVCO LVCO 10 mF 38.9 MHz Standard switch
Test Circuit
1:2 IF input 200 kW 10 nF 1 2 16 15
10 mF 14
TDA 4454
3 4 5 4.7 mF 10 kW 6 7 68 nF 8
Tuner AGC take over
IF AGC Tuner AGC Video
93 7648
Application Circuit
VS +12 V Standard switch
10 mF 10 nF 50 W 4.7 nF 3 10 nF 4 SAW driver 1 2 8
22 mH
22 mH
10 mF 10 nF
1 kW 38.9 MHz 10 9 CVCO LVCO
470 nF 13 12 11
IF
SAW filter 7
16
15
14
U 4744 B
TDA 4454
6 1 5 10 nF 4.7 mF 10 kW 2 3 4 5 6 470 W 7 68 nF 8
93 7649
Tuner AGC take over
Tuner AGC IF AGC
Video
Rev. A1: 04.05.1995
Preliminary Information
9 (11)
TDA4454
Dimensions in mm
Package: DIP 16
TELEFUNKEN Semiconductors
94 9128
10 (11)
Preliminary Information
Rev. A1: 04.05.1995
TELEFUNKEN Semiconductors
TDA4454
Ozone Depleting Substances Policy Statement
It is the policy of TEMIC TELEFUNKEN microelectronic GmbH to 1. Meet all present and future national and international statutory requirements. 2. Regularly and continuously improve the performance of our products, processes, distribution and operating systems with respect to their impact on the health and safety of our employees and the public, as well as their impact on the environment. It is particular concern to control or eliminate releases of those substances into the atmosphere which are known as ozone depleting substances ( ODSs). The Montreal Protocol ( 1987) and its London Amendments ( 1990) intend to severely restrict the use of ODSs and forbid their use within the next ten years. Various national and international initiatives are pressing for an earlier ban on these substances. TEMIC TELEFUNKEN microelectronic GmbH semiconductor division has been able to use its policy of continuous improvements to eliminate the use of ODSs listed in the following documents. 1. Annex A, B and list of transitional substances of the Montreal Protocol and the London Amendments respectively 2 . Class I and II ozone depleting substances in the Clean Air Act Amendments of 1990 by the Environmental Protection Agency ( EPA) in the USA 3. Council Decision 88/540/EEC and 91/690/EEC Annex A, B and C ( transitional substances ) respectively. TEMIC can certify that our semiconductors are not manufactured with ozone depleting substances and do not contain such substances.
We reserve the right to make changes to improve technical design and may do so without further notice. Parameters can vary in different applications. All operating parameters must be validated for each customer application by the customer. Should the buyer use TEMIC products for any unintended or unauthorized application, the buyer shall indemnify TEMIC against all claims, costs, damages, and expenses, arising out of, directly or indirectly, any claim of personal damage, injury or death associated with such unintended or unauthorized use. TEMIC TELEFUNKEN microelectronic GmbH, P.O.B. 3535, D-74025 Heilbronn, Germany Telephone: 49 ( 0 ) 7131 67 2831, Fax number: 49 ( 0 ) 7131 67 2423
Rev. A1: 04.05.1995
Preliminary Information
11 (11)

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