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NTE7057 Integrated Circuit TV SIF/AFT/RF AGC
Description: The NTE7057 is an integrated circuit in a 12-Lead SIP type package designed for providing a high performance SIF for a TV. This device adopts a quasi-parallel inter-carrier detection system for good sound reproduction. Features: D D D D D D 3-Stage Inter-Carrier Amplifier and Inter-Carrier Detector High Response Speed Peak AGC using Double AGC Time Constant Single AFT Output Reverse AGC Carrier Synchronous Video Detector White Noise Inverter Circuits
Absolute Maximum Ratings: (TA = +25C unless otherwise specified) Supply Voltate, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15V Power Dissipation, PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 890mW Derate Above 25C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.12mW/C Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -25 to +75C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55 to +150C Electrical Characteristics: (TA = +25C, VCC = 9V unless otherwise specified)
Parameter DC Stage Supply Voltage Supply Current Terminal Voltage VCC ICC V1 V3 V4 V5(1) V5(2) V9 V10 V11 V12 SW: A SW: B 8.1 20 3.3 3.6 3.6 8.8 - 5.6 5.6 2.5 4.0 9.0 30 4.5 4.0 4.0 - - 6.2 6.2 3.0 4.5 9.9 40 5.7 4.4 4.4 - 0.1 6.8 6.8 3.5 5.0 V ma V V V V V V V V V Symbol Test Conditions Min Typ Max Unit
Electrical Characteristics (Cont'd): (TA = +25C, VCC = 9V unless otherwise specified)
Parameter AC Stage Input Sensitivity Maximum IF Input Voltage IF AGC Range Differential Gain Differential Phase Video DC Voltage Sync. Tip Level Video Output Level White Noise Threshold White Noise Clamp Level Carrier Suppression 2nd Harm. Suppression AFT Sensitivity AFT Output 920kHz Beat Lower Upper VINmin Note 1 VINmax A DG DP V12 VSYNC VOUT VWHT VWCL CL I 2nd F/V VU VL I920 Note 11 Note 2 Note 3 Note 3 Note 4 Note 5 Note 6 Note 7 Note 7 Note 8 Note 9 Note 10 - 74 50 - - 4.0 2.15 1.45 - - 40 40 - 0 8.0 30 75 - 60 - - 4.5 2.35 - 5.2 3.5 - - - - - 38 180 - - 10 5 5.0 2.55 2.05 - - - - 37 0.3 9.0 - Vrms mVrms dB % deg. V V V V V dB dB kHz/V V V dB Symbol Test Conditions Min Typ Max Unit
Note 1. PIF IN: f = 58.75MHz, fm = 1kHz, 30% AM Modulation. Adjust PIF input level so that the detected output of P12 with high impedance probe will be 6VP-P and measure the input level. Note 2. Measure PIF Input Level V1, V2 same as Note 1. Apply P7 = 9V at V1 Apply P7 = 3V at V2 A = 20log (V1/V2) (dB) Note 3. Gain Reduction = 40dB. PIF IN: CW f = 58.75MHz, APL 50%, 87.5% AM Modulation. (1) Setting ATT so that the sync tip level of P12 will be 2V DC. (2) Measure DG and DP. Note 4. PIF IN: No Signal. Measure output level of P12. Note 5. PIF IN: f = 58.75MHz CW 15mVrms. Measure DC level of P12. Note 6. PIF IN: f = 58.75MHz, APL 100% 15mVrms. Measure detected output voltage. Note 7. PIF IN: f = 58.75MHz 10MHz variable or sweep 15mVrms. Measure DC level of P12. Note 8. PIF IN: 58.75MHz, 1kHz, 87.5% AM Modulation 15mVrms. (1) Setting AGC so that output AC level of P12 will be 2VP-P. (2) Measure CL of P12 after setting 0% AM of SG. Note 9. Measure I 2nd carrier of P12 same as Note 8. Note10. PIF IN: SG = VARIABLE, 15mVrms CW. (1) P1 DC voltage will be 4.5V. (2) Apply SG signal to P3 and measure P1 voltage change.
Note 11. SG1: 58.75MHz (P: Picture) 15mVrms. SG2: 54.25MHz (S: Sound) -6dB of SG1 SG3: 55.17MHz (C: Chroma) -6dB of SG1 (1) Setting AGC so that the output tip level of P12 will be 2VP-P. (2) Measure the level difference (dB) between C-Level and 920kHz Level.
Pin Connection Diagram (Front View) 12 Video Output 11 AFT Tank 10 Video Tank 9 8 7 6 5 4 3 2 1 Video Tank IFAGC Filter 1 IF AGC Filter 2 GND RF AGC Output IF Input IF Input VCC AFT Output
.846 (21.5)
.0110 (2.8)
.011 (0.3)
.224 (5.7)
.070 (1.78) .039 (1.0)
.018 (0.46)
.130 (3.3)
.010 (0.25)

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