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| Video IF with FPLL, MAC State TDA 6050-5 Bipolar IC Features q Active multistandard video IF with FPLL demodulator q 12-MHz bandwidth q MAC state P-DIP-20 Type TDA 6050-5 Ordering Code Q67000-A5123 Package P-DIP-20 Circuit Description The IF circuit consists of a four-stage capacitively coupled and symmetrically designed controlled amplifier and a real synchronous demodulator with a FPLL-carrier regeneration. Two IF inputs can be selected for applications with different SAWs. The main performance of the device is the very low differential phase DP and gain DG combined with an excellent intermodulation ratio. The positive video output is used to derive the IF and tuner control voltage. The AGC threshold is set by means of a potentiometer. Dependent on the modulation polarity the video signal and the AGC are switched over. MAC state can be selected by an additional signal. Application Multistandard TV/VTR and cable converters with mono or stereo applications. Semiconductor Group 63 06.94 TDA 6050-5 Pin Functions Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Function IF input 1a IF input 1b IF switch Tuner AGC output Tuner AGC threshold Main AGC-time constant Mean value AGC-time constant Positive/negative modulation switch N.C. FPLL-VCO (2 x video carrier) FPLL-VCO (2 x video carrier) N.C. FPLL-loop filter FPLL-loop reference Video output MAC-standard switch + VS supply voltage Ground IF input 2a IF input 2b Semiconductor Group 64 TDA 6050-5 Block Diagram Semiconductor Group 65 TDA 6050-5 Absolute Maximum Ratings TA = 0 to 70 C Parameter Supply voltage Junction temperature Storage temperature Thermal resistance (system-air) Operating Range Supply voltage Supply voltage delayed tuner AGC IF-frequency range Ambient temperature during operation Symbol min. Limit Values max. 13.2 150 - 40 125 60 V C C K/W 0 Unit V17 Tj Tstg Rth SA V17 V5 fIF TA 10.8 0.8 12 - 10 13.2 12 80 85 V V MHz C Semiconductor Group 66 TDA 6050-5 DC Characteristics TA = 0 to 85 C; VS = 12 V Parameter Total current consumption IF input IF switch H or open = IF 1 L = IF 2 Standard switch H level L level B/G standard L standard MAC standard AGC Voltage Min. AGC Max. AGC Symbol - I17 Limit Values min. typ. 51 5.7 120 2.0 0.0 120 2 0 6.0 210 6.3 260 5.0 1.0 260 5 1 max. mA V A V V A V V Unit Test Condition V1, V2, V19, V20 I3 V3 = 0 V, 5 V V3 V3 I8 I16 V8, V16 V8, V16 210 V8, V16 = 0 V, 5 V V8 = H V16 = H V8 = L V16 = H V8 = H V16 = L V6 V6 0.0 0.1 2.8 0.5 4.0 V V V1-2, V19-20 = 0 Vrms V1-2, V19-20 = 150 mVrms AGC-Time Constant with Neg. Modulation Charge current Discharge current Charge/discharge ratio I6 - I6 I6 1.1 13 55 1.4 18 82 1.9 23 140 mA A V6 = 2.0 V, V15 3.2 V V6 = 2.0 V, V15 4.2 V AGC-Time Constant with Pos. Modulation Charge current Discharge current Discharge current (Average control) Charge/discharge ratio I6 - I6 - I6 I6 1.1 0.15 70 4000 1.4 0.25 85 5600 1.9 0.35 120 9000 mA A A V6 = 2.0 V, V15 7.0 V V6 = 2.0 V, 5.2 V < V15 < 6.5 V V6 = 2.0 V, V15 < 3.9 V Mean Value Generation with Pos. Modulation White level Zero carrier level V7 V7 4.9 3.3 5.7 3.7 6.5 4.1 V V V1-2, V19-20 = 10 mVrms V1-2, V19-20 = 0 Vrms Semiconductor Group 67 TDA 6050-5 DC-Characteristics (cont'd) Parameter Symbol Limit Values min. Tuner AGC threshold V5 typ. 4.7 850 3.1 0.4 18 max. 5.0 1050 3.4 0.5 30 10 V A V V mA A 4.4 650 2.8 0.3 10 0 Unit Test Condition I5 V6 V6 Tuner AGC current max. 1 ms - I4 - I4 R5-18 V5 = 0 R5-18 = 10 k R5-18 = 10 V4 = 0.5 V17, V5 = 0.75 V V1-2, V19-20 = 100 mVrms V4 = 0.5 V17, V5 = 4 V V1-2, V19-20 = 10 mVrms FPLL VCO-tank circuit Loop reference V10, V11 V14 3.4 3 3.8 4.1 V V Video Output Negative Modulation Output current - I15 1.9 4.0 3.3 6.3 2.5 3.3 mA mA V V V15 = 5.0 V, V1-2, V19-20 = 10 mVrms, no modulation to ground via R = 500 V1-2, V19-20 = 10 mVrms, no modulation V6 = 3 V, V1-2, V19-20 = 0 Vrms Sync pulse level Zero carrier level I15 V15 V15 3.7 7.0 4.1 7.7 Video Output Positive Modulation (L standard) White level Zero carrier level V15 V15 6.0 3.3 6.7 3.7 7.4 4.1 V V V1-2, V19-20 = 10 mVrms, no modulation V6 = 3 V, V1-2, V19-20 = 0 Vrms Semiconductor Group 68 TDA 6050-5 AC Characteristics TA = 0 to 85 C; VS = 12 V Parameter Min. IF-input voltage (min. AGC) Max. IF-input voltage (max. AGC) IF-control range Video output Changes via control range Changes via supply voltage range Symbol Limit Values min. typ. max. 60 Vrms mVrms dB 3.3 6 4 Vpp % % 45 100 70 3.0 3 2 Unit Test Condition V1-2, V19-20 V1-2, V19-20 90 V 63 2.7 V15 V15 V15 V1-2, V19-20 = 10 mVrms R15-18 = 1.5 k Control range = 55 dB 10.8 V < V17 < 13.2 V Semiconductor Group 69 TDA 6050-5 AC Characteristics (cont'd) Parameter Symbol Limit Values min. Design Notes IF-input resistance symmetrical IF-input capacitance symmetrical VCO voltage Video output resistance Video noise voltage ratio Video bandwidth Differential gain Differential phase typ. max. Unit Test Condition R1-2, R19-20 1.5 C1-2, C19-20 V10-11 R 15 S/N B - 3 dB DG DP 12 2 2 700 70 60 2.5 5 k pF mVpp 125 dB MHz CCIR Rec 567-1 5 2.5 60 % o V1-2, V19-20 = 10 mVrms V1-2, V19-20 = 10 mVrms V1-2, V19-20 = 10 mVrms a IM Intermodulation ratio f IM = 1.07 MHz = f TT - f FT sound porch = - 20 dB Intercarrier noise dB S/N 54 dB V1-2, V19-20 = 10 mVrms, CCIR 468 FuBK, m = 100 % sound porch = - 13 dB Varactor diode Varactor diode C 10, 11 C 10, 11 15 7 pF pF V13 = 2.5 V V13 = 4.9 V Semiconductor Group 70 TDA 6050-5 Test Circuit Semiconductor Group 71 TDA 6050-5 Application Circuit Video Semiconductor Group 72 |
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