NTE1522 Integrated Circuit B/W Video IF Description: The NTE1522 is a silicon monolithic integrated circuit designed for VIF section in B/W television receivers. This IC has all functions including a video IF amplifier, video low−loevel detector, RF AGC, IF AGC and noise canceller. The IC is a 14 Pin Dual In−Line Package with a Heat tab. Features: D High Input Sensitivity: 30dBμ (Typ.) D It can be used both of keyed type AGC and peak type AGC. D It can be operated with the power supply voltage above 7V. D Since the video detector has a wide bandwidth, it’s suitable for the sound carrier frequency of 4.5, 5.5, 6.0 and 6.5MHz D As input is in differential mode, it can be used with SAW filter. Absolute Maximum Ratings: (TA = +25°C unless otherwise specified) Supply Voltage, V7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15V Input Signal Voltage, V8, V9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Vp−p Power Dissipation (Note 1), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 875mW Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −20° to +75°C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −40° to +125°C Note 1. TA = +75°C Free Air Electrical Characteristics: (TA = +25°C, VCC = 12V, f = 58.75MHz, fM = 15.75kHz unless otherwise specified) Parameter Total Supply Current Symbol ICC Test Conditions Min Typ Max Unit I7 + I12, RA = 150Ω 40 50 60 mA − 30 35 dBμ Input Sensitivity ni(sens) MOD = 80%, Vo = 1.4Vp−p Max. Input Voltage ni(max) MOD = 80%, −1dB Point 100 − − dBμ Video Output Voltage no MOD = 80%, Vi = 3mVrms 1.0 1.4 1.7 Vp−p Video Output DC Voltage VO No Signal 3.3 3.8 4.3 V Signal to Noise Ratio S/N MOD = 80% to 0%, ni = 3mVrms 40 50 − dB RF AGC Voltage (High) V6H V5 = 0V 8 9 11 V RF AGC Voltage (Low) V6L V5 = 7V − 0 0.5 V Differential Gain DG Stair Step fM = 3.58MHz − − 10 % Differential Phase DP − − 10 deg. Video Detector Bandwidth BW 5.5 − − MHz Input Resistance RIN − 1.5 − kΩ Input Capacitance CIN − 3.3 − pF −3dB Point Pin Connection Diagram Detention Coil 1 14 Detector Coil Keying Pulse Input 2 13 GND Video Output 3 12 VCC 2 AGC Time Constant 4 11 Capacitor RF AGC Adjust 5 10 Capacitor Toner AGC Output 6 9 VIF Input VCC 1 7 8 VIF Input Tab/GND .164 (4.2) .252 (6.4) 14 8 1 7 2.00 (5.08) Max .764 (19.4) Max .300 (7.62) .100 (2.54) .020 (.508) .100 (2.54)