Video IF Amplifier and Demodulator TDA 5930-5 Bipolar IC Features ● ● ● ● 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 Ordering Code Package TDA 5930-5 Q67000-A5135 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. Function 1 Video IF input 2 Standard switch over B/G-L 3 Ground 4 AGC time constant 5 Tuner AGC output 6 Tuner AGC threshold 7 N.C. 8 Demodulator tank circuit 9 Demodulator tank circuit 10 Low pass (mean value generation) 11 Positive video output 12 Negative video output 13 Supply voltage 14 N.C. 15 Ground 16 Video IF input Semiconductor Group 15 TDA 5930-5 Absolute Maximum Ratings TA = 25 ˚C Parameter Symbol Limit Values min. max. Unit Supply voltage V13 0 13.5 V Pos. video output I11 –3 5 mA Pos. video output V11 0 10 V Demodulator tank circuit V8/V9 0 + V13 V Neg. video output I12 –3 5 mA Neg. video output V12 0 + V13 V Tuner AGC threshold V6 0 6 V Tuner AGC output V5 0 + V13 V IF input V1/V16 0 6 V IF control V4 0 8.5 V Standard switch-over V2 0 6 V Auxiliary control V10 0 6 V Junction temperature Tj 150 ˚C Storage temperature Tstg 125 ˚C Thermal resistance (system-air) Rth SA 70 K/W – 40 Operating Range Supply voltage V13 10.5 13.5 V Supply voltage, delayed tuner AGC V5 1 13.5 V Ambient temperature during operation TA 0 70 ˚C Input frequency range – 3 dB Input frequency range – 0.3 dB fIF fIF 10 30 100 75 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 Limit Values Unit Test Condition min. typ. max. 37 53 69 mA V1/16 = 10 mVrms 0 2.6 0.1 2.85 0.5 4.5 V V V1/16 = 45 µVrms V1/16 = 175 mVrms 1.1 23 150 mA µA V4 = 2 V; V11 < 5.2 V V4 = 2 V; V11 > 6.3 V 8.0 0.3 mA µA V4 = 2 V; V11 ≥ 9 V V4 = 2 V; 4.5 V < V11 < 8.2 V V4 = 2 V; V11 < 6 V DC Characteristics Tot. current consumption AGC Voltage (figure 1) Min. AGC Max. AGC V4 V4 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 AGC-Time Constant (figure 7) with Pos. Modulation Charge current Discharge current I4 Discharge current Charge/discharge ratio – I4 – I4 V4 5.5 0.1 7 0.2 270 330 420 µA 20000 35000 75000 Mean Value Generation with Pos. Modulation White level Zero carrier level V10 V10 3.9 3.3 4.3 3.7 4.7 4.1 V V Tuner AGC threshold (figure 2) I5 = Imax:2 V6 I6 V4 V4 3.9 550 2.8 0.35 4.3 750 3.1 0.4 4.7 950 3.4 0.45 V µA V V Tuner AGC current (figure 3, 4) – I5 3.0 4.0 5.0 mA – I5 0 – 10 µA V1/16 = 10 mVrms V1/16 = 0 V; V4 = 3 V R6/ 15 = ∝ V6 = 0 V R6/15 = 10 kΩ V5 = 0.5 V13 V1/16 = 100 mVrms V6 = 0.75 V V5 = 0.5 V13 V1/16 = 10 mVrms V6 = 4.0 V 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 Limit Values min. typ. Unit Test Condition max. Mean Value Generation with Pos. Modulation (cont’d) IF input V1, V16 5.7 6.0 6.3 V Demodulator tank circuit V8, V9 V13 V13 V13 V – 3.5 – 3.8 – 4.1 2.2 2.7 I11 1.7 4 V11 V11 5.9 3.3 6.6 3.6 V11 V11 3.3 6.2 – I12 Pos. Video Output (figure 8) mA mA V11 = 9 V 7.3 4.0 V V V1/16 = 10 mVrms V1/16 = 0 V; V4 = 3 V 3.6 6.9 4.0 7.6 V V V1/16 = 10 mVrms V1/16 = 0 V; V4 = 3 V 2.2 2.7 I12 1.7 4 mA mA RL = ∞ V12 = V13 White level V12 V13 V13 V13 V V1/16 = 10 mVrms – 5.7 – 4.95 – 4.2 Zero carrier (sync.) V12 V13 V13 V13 V V1/16 = 0 V; V4 = 3 V – 3.3 – 2.8 – 2.4 V13 V13 V13 V V1/16 = 10 mVrms – 3.3 – 2.8 – 2.4 V13 V13 V13 V V1/16 = 0 V; V4 = 3 V – 5.9 – 5.2 – 4.4 Output current – I11 to ground via R = 1 kΩ 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 Pos. Modulation (L norm) Neg. Modulation (BG norm) Sync. pulse level Zero carrier V12 V12 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 Limit Values min. typ. Unit Test Condition max. Switching Voltage (figure 12) L = L/E standard H = B/G stand. or open V2 V2 0 2.6 1.8 6 V V 60 µV V11pp – 1 dB V1/16 V11pp + 1 dB Dynamic Characteristics Min. IF-Input Voltage (figure 1) (min. gain) PC rms V1/16 45 Max. IF-Input Voltage (figure 1) (max. gain) PC rms 105 140 mV dB IF-control range (figure 1) ∆V 65 70 Pos. video output (figure 8) V11 2.7 3.0 3.3 Vpp RL ≥ 1.5 kΩ Change ∆V11 by standard switch-over ∆V11 1 5 % 0 V < V2 < 2 V = B/G Operat. 2.6 V < V2 < 6 V = L Operat. Changes via operating voltage ∆V11/ ∆V13 1.5 3 % 10.8 V < V13 < 13.2 V Neg. video output (figure 9) V12 2.15 2.35 Vpp RL = ∞ 1.95 Video output voltage change (figure 8) by means of a control range of 55 dB ∆V11 0.2 0.5 dB 2 2.5 kΩ Design Notes (no 100 % final test) Input resistance (symmetrical) R1/16 Input capacitance (symmetrical) C1/16 2 5 pF Low pass cut-off frequency (figure 5) f– 3 dB(10) 70 100 130 Hz Semiconductor Group 1.5 C10/15 = 100 nF ± 10 % 19 TDA 5930-5 Characteristics (cont’d) TA = 25 ˚C Parameter Symbol Limit Values min. typ. Unit Test Condition max. 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 S/N 48 dB S/N 17 dB FuBK-test chart – ∆S/N 2 dB FuBK-test chart – ∆S/N 11 dB Dyn. output resistance pos. video output neg. video output R11 R12 Noise figure (figure 14) F 80 100 115 150 150 200 Ω Ω 5 7 dB V1/16 = – 45 dBm = + 62 dBµV RGEN = 800 Ω 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 50 55 dB S/N 55 60 dB B– 3 dB B– 12 dB 8 15 10 17 13 20 MHz MHz 3.0 6.0 mV 0.3 0.6 mV Residual carrier voltage at video output PC = 10 mVrms Fundamental wave f = 38.9 MHz V11 1. harmonic wave f = 77.8 MHz V11 Semiconductor Group 20 V1/16 = 10 mVpp FuBK mod. V1/16 = 10 mVpp 2.753 MHz mod. with detuning ∆f = – 400 kHz with detuning ∆f = + 400 kHz TDA 5930-5 Characteristics (cont’d) TA = 25 ˚C Parameter Symbol Limit Values min. Unit typ. max. DG ∆DG/∆v ∆DG/∆f 4 6 1 1 % % % DP ∆DP/∆v ∆DP/∆f 1.5 2.5 1 2 deg deg deg Test Condition 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 Semiconductor Group aIM aIM aIM 32 54 51 38 60 57 V8/9 300 450 ∆VSync/V11 21 dB dB dB 600 mVpp 5 % OFWG 3950 OFW 3610 OFWG 1956 TDA 5930-5 Characteristics (cont’d) TA = 25 ˚C Parameter Symbol Limit Values min. typ. Unit Test Condition I5 = I5max/2 caused by the self-heating of the ICs 10 s to 15 min. max. Design Notes (no 100 % final test) (cont’d) Temperature drift of the tuner AGC threshold referred to the input voltage 2 dB Ratio pulse bar tilt to sync. amplitude 4 % Reaction time of white level peak setting, L standard 10 µs 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: Semiconductor Group ext. modulation: video generator: 10 Hz – 1 kHz sine 30 % AM ext. negative setup on half sync level, field off 26 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