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Video IF Amplifier and Demodulator
TDA 5930-5
Bipolar IC
Features
q q q q
Multistandard video IF Interference suppression circuitry Mean/peak value control Area of application: multistandard TV / VCR, mono, stereo cable converter, mono, stereo
P-DIP-16-1
Type TDA 5930-5
Ordering Code Q67000-A5135
Package P-DIP-16-1
Circuit Description Video IF for all European standards. The analog setting function (delayed tuner AGC threshold) is controlled via a potentiometer. The IC is suitable for use in Euro- or multi-standard TV sets for mono and stereo application. The component includes a four-stage, capacitively coupled, symmetrically designed and controlled amplifier, a limiter with selection, and a mixer for quasi-synchronous demodulation of positive and negative modulated IF signals. In addition a video output amplifier and noise suppression circuitry are included. This output is used for generating the AGC voltage. The AGC for both modulation types has been realized as integral AGC with noise-free peak and mean value detector (only for positive modulation). A delayed tuner AGC with positive AGC direction (increase in tuner AGC voltage increased gain) is derived from the AGC voltage via a threshold amplifier set by means of an external potentiometer. A positive video output with 3 Vpp and a negative video output with 2 Vpp are available.
Semiconductor Group
13
06.94
TDA 5930-5
Block Diagram
Semiconductor Group
14
TDA 5930-5
Pin Functions Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Function Video IF input Standard switch over B/G-L Ground AGC time constant Tuner AGC output Tuner AGC threshold N.C. Demodulator tank circuit Demodulator tank circuit Low pass (mean value generation) Positive video output Negative video output Supply voltage N.C. Ground Video IF input
Semiconductor Group
15
TDA 5930-5
Absolute Maximum Ratings TA = 25 C Parameter Supply voltage Pos. video output Pos. video output Demodulator tank circuit Neg. video output Neg. video output Tuner AGC threshold Tuner AGC output IF input IF control Standard switch-over Auxiliary control Junction temperature Storage temperature Thermal resistance (system-air) Operating Range Supply voltage Supply voltage, delayed tuner AGC Ambient temperature during operation Input frequency range - 3 dB Input frequency range - 0.3 dB Symbol min. Limit Values max. 13.5 5 10 + V13 5 + V13 6 + V13 6 8.5 6 6 150 - 40 125 70 V mA V V mA V V V V V V V C C K/W 0 -3 0 0 -3 0 0 0 0 0 0 0 Unit
V13 I11 V11 V8/V9 I12 V12 V6 V5 V1/V16 V4 V2 V10 Tj Tstg Rth SA
V13 V5 TA fIF fIF
10.5 1 0 10 30
13.5 13.5 70 100 75
V V C MHz MHz
All voltage values are referenced to ground pin 3, 15, if not stated otherwise. The currents are identified according to the source/sink principle. If the IC is considered a sink (the current flows from the respective pin to ground), it is identified by a negative algebraic sign. However, if the IC is the source (the current flows form V8 via the respective pin), it is identified by a positive algebraic sign.
Semiconductor Group
16
TDA 5930-5
Characteristics VS = V13/15 = 12 V 10 %; TA = 25 C Parameter Symbol min. DC Characteristics Tot. current consumption AGC Voltage (figure 1) Min. AGC Max. AGC 37 53 69 mA Limit Values typ. max. Unit Test Condition
V1/16 = 10 mVrms
V4 V4
0 2.6
0.1 2.85
0.5 4.5
V V
V1/16 = 45 Vrms V1/16 = 175 mVrms
AGC-Time Constant (figure 6) with Neg. Modulation Charge current (Imax:2) Discharge current Charge/discharge ratio
I4
- I4
V4
0.7 12 75
0.9 17 105
1.1 23 150
mA A
V4 = 2 V; V11 < 5.2 V V4 = 2 V; V11 > 6.3 V
AGC-Time Constant (figure 7) with Pos. Modulation Charge current Discharge current Discharge current Charge/discharge ratio
I4
- I4 - I4
5.5 0.1
7 0.2
8.0 0.3
mA A
V4
270 330 420 A 20000 35000 75000
V4 = 2 V; V11 9 V V4 = 2 V; 4.5 V < V11 < 8.2 V V4 = 2 V; V11 < 6 V
Mean Value Generation with Pos. Modulation White level Zero carrier level Tuner AGC threshold (figure 2) I5 = Imax:2 Tuner AGC current (figure 3, 4)
V10 V10 V6 I6 V4 V4
- I5
3.9 3.3 3.9 550 2.8 0.35 3.0
4.3 3.7 4.3 750 3.1 0.4 4.0
4.7 4.1 4.7 950 3.4 0.45 5.0
V V V A V V mA
V1/16 = 10 mVrms V1/16 = 0 V; V4 = 3 V R6/ 15 = V6 = 0 V R6/15 = 10 k V5 = 0.5 V13 V1/16 = 100 mVrms V6 = 0.75 V V5 = 0.5 V13 V1/16 = 10 mVrms V6 = 4.0 V
- I5
0
-
10
A
The characteristics data apply to the supply voltage range VS stated or in case of alignment to the alignment instructions (see page 21). All static voltages are referenced to ground if not stated otherwise. The input levels are given as rms values referenced to synchronous peak fPC = 38.9 MHz.
Semiconductor Group
17
TDA 5930-5
Characteristics (cont'd) TA = 25 C Parameter Symbol min. Limit Values typ. max. Unit Test Condition
Mean Value Generation with Pos. Modulation (cont'd) IF input Demodulator tank circuit
V1, V16 V8, V9
5.7
6.0
6.3
V V
V13
- 3.5
V13
- 3.8
V13
- 4.1
Pos. Video Output (figure 8) Output current - I11
I11
Pos. Modulation (L norm) White level Zero carrier (sync.) Neg. Modulation (BG norm) Sync. pulse level Zero carrier Neg. Video Output (figure 9) Output current - I12
1.7 4
2.2
2.7
mA mA
V11 = 9 V
to ground via R = 1 k
V11 V11
5.9 3.3
6.6 3.6
7.3 4.0
V V
V1/16 = 10 mVrms V1/16 = 0 V; V4 = 3 V
V11 V11
3.3 6.2
3.6 6.9
4.0 7.6
V V
V1/16 = 10 mVrms V1/16 = 0 V; V4 = 3 V
I12
Pos. Modulation (L norm) White level Zero carrier (sync.)
1.7 4
2.2
2.7
mA mA
RL = V12 = V13
V12 V12
V13
- 5.7
V13 V13
- 2.8
V13 V13
- 2.4
V V
V1/16 = 10 mVrms V1/16 = 0 V; V4 = 3 V
- 4.95 - 4.2
V13
- 3.3
Neg. Modulation (BG norm) Sync. pulse level Zero carrier
V12 V12
V13
- 3.3
V13
- 2.8
V13
- 2.4
V V
V1/16 = 10 mVrms V1/16 = 0 V; V4 = 3 V
V13
- 5.9
V13
- 5.2
V13
- 4.4
Video output voltages (peak-to-peak) PC = 10 mVrms with neg. modulation = 10 %; with pos. modulation and residual carrier < 6 %.
Semiconductor Group
18
TDA 5930-5
Characteristics (cont'd) TA = 25 C Parameter Symbol min. Switching Voltage (figure 12) L = L/E standard H = B/G stand. or open Dynamic Characteristics Min. IF-Input Voltage (figure 1) (min. gain) PC rms V1/16 Max. IF-Input Voltage (figure 1) (max. gain) 45 60 V Limit Values typ. max. Unit Test Condition
V2 V2
0 2.6
1.8 6
V V
V11pp - 1 dB
PC rms
IF-control range (figure 1) Pos. video output (figure 8) Change V11 by standard switch-over V
105 65 2.7
140 70 3.0 1 3.3 5
mV dB Vpp %
V1/16 V11pp + 1 dB RL 1.5 k
0 V < V2 < 2 V = B/G Operat. 2.6 V < V2 < 6 V = L Operat. 10.8 V < V13 < 13.2 V
V11
V11
Changes via operating voltage Neg. video output (figure 9)
V11/ V13
1.5 1.95 2.15 0.2
3 2.35 0.5
% Vpp dB
V12
V11
RL =
Video output voltage change (figure 8) by means of a control range of 55 dB
Design Notes (no 100 % final test) Input resistance (symmetrical) Input capacitance (symmetrical) Low pass cut-off frequency (figure 5)
R1/16 C1/16
1.5
2 2 100
2.5 5 130
k pF Hz
f- 3 dB(10) 70
100 nF 10 %
C10/15 =
Semiconductor Group
19
TDA 5930-5
Characteristics (cont'd) TA = 25 C Parameter Symbol min. Design Notes (no 100 % final test) (cont'd) Intercarrier noise voltage ratio (weighted according CCIR 468) (figure 13) with parallel tank circuit; 38.9 MHz, SAW 361 D, fSC = 5.5 MHz (- 13 dB), demodulator: TBA 120 U Limit Values typ. max. Unit Test Condition
S/N S/N
FuBK-test chart FuBK-test chart Dyn. output resistance pos. video output neg. video output Noise figure (figure 14) - S/N - S/N
48 17 2 11
dB dB dB dB
V1/16 = 10 mVpp FuBK mod. V1/16 = 10 mVpp 2.753 MHz mod. with detuning f = - 400 kHz with detuning f = + 400 kHz
R11 R12 F
80 100
115 150 5
150 200 7
dB
V1/16 = - 45 dBm = + 62 dBV RGEN = 800
Video noise voltage ratio (figure 15) with PC = 10 mVrms 0 dB = 700 mVpp BA unweighted weighted according to CCIR Rec. 567-1 Video frequency response (figure 16) - 3 dB - 12 dB
S/N S/N
50 55
55 60
dB dB
B- 3 dB B- 12 dB
8 15
10 17
13 20
MHz MHz
Residual carrier voltage at video output PC = 10 mVrms Fundamental wave f = 38.9 MHz V11 1. harmonic wave f = 77.8 MHz V11
3.0 0.3
6.0 0.6
mV mV
Semiconductor Group
20
TDA 5930-5
Characteristics (cont'd) TA = 25 C Parameter Symbol min. Design Notes (no 100 % final test) (cont'd) Differential gain CCIR Rec. 567-1 (figure 17) with PC = 10 mV peak-to-peak according to stairsignal test Changes via AGC Changes via detuning fBT = 38.9 MHz; f = 400 kHz Differential phase CCIR Rec. 567-1 (figure 17) with PC = 10 mVrms peak-to-peak according to stairsignal test Changes via AGC Changes via detuning fBT = 38.9 MHz; f = 400 kHz Intermodulation ratio (figure 18) with fIM = 1.07 MHz = fSC - fCC with PC = 10 mVrms with sound porch - 3 dB with sound porch - 20 dB with sound porch - 17 dB Demodulator tank circuit voltage fPC = 38.9 MHz; C = 47 pF L = 350 nH 100 Q0 120; QB 60; B 0.8 ... 1.0 MHz Synchronous pulse Limit Values typ. max. Unit Test Condition
DG
DG/v DG/f
4
6 1 1
% % %
DP
DP/v DP/f
1.5
2.5 1 2
deg deg deg
aIM aIM aIM
32 54 51
38 60 57
dB dB dB
OFWG 3950 OFW 3610 OFWG 1956
V8/9
300
450
600
mVpp
VSync/V11
5
%
Semiconductor Group
21
TDA 5930-5
Characteristics (cont'd) TA = 25 C Parameter Symbol min. Design Notes (no 100 % final test) (cont'd) Temperature drift of the tuner AGC threshold referred to the input voltage Ratio pulse bar tilt to sync. amplitude Reaction time of white level peak setting, L standard 2 dB Limit Values typ. max. Unit Test Condition
I5 = I5max/2 caused by the self-heating of the ICs 10 s to 15 min.
4 10
% s low-pass filter in regulation slope ca. 300 kHz
Alignment Instructions At a video carrier input level of V1/16 = 4 mVrms, fPC = 38.9 MHz, and a superimposed AGC voltage of V4 = 1.5 V, the demodulator tank circuit is preliminarily aligned until a max. video signal V11pp is obtained at the positive video output. Any suitable video test signal can be used for modulation. The AGC voltage V4 is reduced until the signal is approx. 3 Vpp and the max. video signal is obtained when fine-aligning the demodulator tank circuit. The alignment is not critical due to relatively large bandwidth of the demodulator tank circuit. Fine-tuning to intercarrier S/N, differential phase or 2Tpulse characteristics is possible.
Semiconductor Group
22
TDA 5930-5
Test Circuit
Semiconductor Group
23
TDA 5930-5
Application Circuit
Semiconductor Group
24
TDA 5930-5
AGC Voltage
Inset Point AGC Voltage
Semiconductor Group
25
TDA 5930-5
Tuner AGC Current I5 = f (V4)
Low-Pass Cut-Off Frequency (pin 10)
Measurement condition:
ext. modulation: video generator:
10 Hz - 1 kHz sine 30 % AM ext. negative setup on half sync level, field off 26
Semiconductor Group
TDA 5930-5
AGC Time Constant Neg. Modulation
AGC Time Constant Pos. Modulation
Semiconductor Group
27
TDA 5930-5
Pos. Video Output (pin 11)
Neg. Video Output (pin 12)
Semiconductor Group
28
TDA 5930-5
Voltage Dependent Load at Video Output
Switching Voltage
Semiconductor Group
29
TDA 5930-5
Intercarrier Interference Voltage (weighted according to CCIR 468)
Measurement Configuration
Semiconductor Group
30

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