NTE1469 Integrated Circuit Video IF & AFT Functions: D PIF Amplifier D Video Detector D AFS with Defeat D Noise Canceller D Forward AGC Features: D SAW Filter Connectable Without Preamp D Input Sensitivity: Vin = 50μVrms Typ. D Output Peak−to−Peak Voltage at Video Detector Adjustable Externally. D High S/N under Weak−Input Signal Absolute Maximum Ratings: (TA = +25°C unless otherwise specified) Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15V Input Voltage, Vin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Vp−p Power Dissipation (TA = +75°C), PT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 625mW Operating Temperature, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −20° to +75°C Storage Temperature, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −40° to +125°C Electrical Characteristics: (VCC −12V, TA = 25°C, unless otherwise specified) Item Symbol Test Conditions Min Typ Max Pin 21 21.0 27.0 34.5 Pin 9 22.0 25.5 28.4 Unit Supply Current ICC No signal input Input Sensitivity Vin Vout = 1.35VP−P (Pin 24) 25 50 100 AFC Output Voltage at No Signal Input V16 VC(AFC) = 0, V15 = 1V 5.4 6.5 7.7 Vin(AFC) = 0, V15 = 0 − 4.5 − Signal−to−noise Ratio S/N Vin = 3mVrms (no demodulation) S/N = 20log Vout/Vn (Pin 2) − 53 − V − 12 − mVrms 4.5 5.8 7.0 V Pin 2 3.9 4.1 4.3 Pin 24 7.35 7.7 8.05 −10 0 +10 mV − − 2.5 V Max. Input Voltage Vin max V13−14 = 80mVrms, DG = 1dB Output Carrier−Zero DC Voltage VW Vin = 0, V22 = 1.8V Sync Tip Voltage Vp Vin i = 3mVrms, m = 75% Differential Voltage between Pin 14 and Pin 13 V14,13 Max, Video Output Voltage V2M Video Frequency Response Supply Voltage for IF Block fB V9 Input Voltage: 80μVrms ∼ 16mVrms C.W. DC Voltage between Pin 14 and Pin 13 Measure V14,13 Voltage between Pin 14 and Pin 13: 300mVrms C.W. V22 = 1.8V, Measure DC Voltage at Pin 2 Vin: modulation of video sweep. 3mV 3 Vrms Standardizing the output voltage at 100kHZ Pin 2 2MHZ − 0 − 4MHZ − 0 − 6MHZ − +1.5 − VCC = 12V, R3 = 180Ω, DC C voltage g at Pin 9 connecting VCC through 180Ω Vin = 0 6.4 7.4 7.9 Vin = 3mVrms 5.8 6.4 7.0 mA μVrms V V dB V Small Signal Video Amp. Gain AAC Input Signal at Pin 3: 10kHZ, 0.1VP−P plus 4.5V bias, Measure AC gain to Pin 24 −1.5 −0.7 0 dB Video Amp. DC Transfer Ratio ADC Input Voltage at Pin 3: 4V DC Voltage at Pin 24 7.25 7.6 7.95 V Bv Input Signal at Pin 3: 0 ∼ 20MHZ Sweep: 0.1VP−P + 4.5V, Frequency when voltage at Pin 24 goes down 3dB 8 − − MHZ Noise Canceller Threshold Voltage VNS1 Input Signal Waveform 1 is applied to Pin 3. VNS means VN at Pin 3 when the pulse peak at Pin 24 begins to rise up 0.3 0.5 0.7 V Noise Canceller Clamp Voltage VNC Input Signal Waveform 1 is applied to Pin 3. VNC at Output Signal Waveforn 1 of Pin 24 when VN = 1V 0.45 0.7 0.95 V AFC Detector Sensitivity μAFC fo = 58.75MHZ, Vin(AFC) = 14mVrms, VCC = 12V, ΔV = 10V (1 ∼ 11V) − − 200 kHZ 10V Video Amp. Bandwidth Electrical Characteristics (Cont’d): (VCC −12V, TA = +25°C, unless otherwise specified) Item Symbol CO AFC Output Voltage for Deviation of Input Frequency Test Conditions VCC = 12V, 12V fo = 58.75MHZ, Vin(AFC) = 5mVrms VAFC Min Typ Max fo + 2.0MHZ 2.0 − − fo + 1.5MHZ 1.0 − − fo + 0.7MHZ − − 1.0 fo ± 0MHZ − 6.0 − fo − 0.7MHZ 11.0 − − fo − 1.5MHZ − − 11.0 fo − 2.0MHZ − − 10.0 − 6.0 − dB Cin 30 40 50 pF Rin 70 100 140 Ω Noise Figure FI Voltage at Pin 12 is fixed, Vin = 3mVrms IF Input Impedance Zin i Either Pin 6 or Pin 7 is grounded, Pin 12: 8.0V Pin Connection Diagram Bypass 1 24 Video Output Sound/Video Output 2 23 AGC Filter Noise Cancel Input 3 22 Filter Video Detector Adjust 4 21 VCC (1) Bypass 5 20 AFC Adjust IF Input 6 19 Sync Detector Adjust IF Input 7 18 Sync Detector Adjust Bypass 8 17 AFC Adjust VCC (2) 9 16 AFC Output RF AGC Output 10 15 VCC (3) GND 11 14 Sound Trap AGC Delay Adjust 12 13 Sound Trap Unit V 24 13 1 12 .520 (13.2) 1.300 (33.02) Max .225 (5.73) Max .100 (2.54) 1.100 (27.94) .126 (3.22) Min .600 (15.24)