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 = +25°C unless otherwise specified) Supply Voltate, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15V Power Dissipation, PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 890mW Derate Above 25°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.12mW/°C Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −25° to +75°C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −55° to +150°C Electrical Characteristics: (TA = +25°C, VCC = 9V unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Unit DC Stage Supply Voltage VCC 8.1 9.0 9.9 V Supply Current ICC 20 30 40 ma Terminal Voltage V1 3.3 4.5 5.7 V V3 3.6 4.0 4.4 V V4 3.6 4.0 4.4 V V5(1) SW: A 8.8 − − V V5(2) SW: B − − 0.1 V V9 5.6 6.2 6.8 V V10 5.6 6.2 6.8 V V11 2.5 3.0 3.5 V V12 4.0 4.5 5.0 V Electrical Characteristics (Cont’d): (TA = +25°C, VCC = 9V unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Unit AC Stage Input Sensitivity VINmin Note 1 − 75 180 μVrms Maximum IF Input Voltage VINmax 74 − − mVrms IF AGC Range ΔA Note 2 50 60 − dB Differential Gain DG Note 3 − − 10 % Differential Phase DP Note 3 − − 5 deg. Video DC Voltage V12 Note 4 4.0 4.5 5.0 V Sync. Tip Level VSYNC Note 5 2.15 2.35 2.55 V Video Output Level VOUT Note 6 1.45 − 2.05 V White Noise Threshold VWHT Note 7 − 5.2 − V White Noise Clamp Level VWCL Note 7 − 3.5 − V CL Note 8 40 − − dB I 2nd Note 9 40 − − dB ΔF/ΔV Note 10 − − 37 kHz/V Carrier Suppression 2nd Harm. Suppression AFT Sensitivity AFT Output 920kHz Beat Lower VU 0 − 0.3 V Upper VL 8.0 − 9.0 V 30 38 − dB I920 Note 11 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 ΔA = 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 Video Tank 8 IFAGC Filter 1 7 IF AGC Filter 2 6 GND 5 RF AGC Output 4 IF Input 3 IF Input 2 VCC 1 AFT Output .846 (21.5) .0110 (2.8) .224 (5.7) .011 (0.3) .070 (1.78) .018 (0.46) .039 (1.0) .130 (3.3) .010 (0.25)