NTE7129 Integrated Circuit IF Signal Processing (Super PLL−II VIF + SIF) Circuit for TVs & VCRs Description: The NTE7129 is an intercarrier−type VIF + SIF integrated circuit in a 24−Lead DIP type package that supports excellent sound and image quality. The pin assignment of the NTE7129 is identical to that of the NTE7130, allowing the NTE7130 to be used for split systems while the NTE7129 is used for intercarrier systems. In addition, the NTE7129 suppresses Nyaquist buzz interference by using a PLL (Phase−Lock Loop) detection system with a buzz canceller in order to provide the best sound quality possible. Features: D Excellent Buzz and Buzz−Beat Characteristics due to PLL D Built−In APC Time Constant Switch D Duplicate Time Constant System Suited for High−Speed AGC D Excellent DG and DP Characteristics D RF AGC Adjustment is Simple Functions: VIF Block D VIF Amplifier D VCO D APC Filter D B/W NC D AFT D IF AGC D D D D D D SIF Block D Limiter Amplifier D FM Quadrature Detector Mute D Audio Mute (Pin2) D IS−15 Switch (Pin13) PLL Detector Equalizer Amplifier Lock Detection RF AGC APC Detector Buzz Canceller D AV Mute (Pin4) Absolute Maximum Ratings: (TA = +25°C unless otherwise specified) Maximum Supply Voltage, VCCmax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13.8V Allowable Power Dissipation (TA ≤ +50°C), Pdmax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1200mW Circuit Voltage, V3, V13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VCC Circuit Voltage, V14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VCC Circuit Current, I1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −1mA Circuit Current, I17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −10mA Circuit Current, I21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −3mA Circuit Current, I10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3mA Operating Temperature Range (Note 2), Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −20° to +70°C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −55° to +150°C Note 1. The current that flows into the IC is positive (no signal); the current that flows out of the IC is negative. Note 2. Topr = −20° to +75°C at VCC = 9V. Recommended Operating Conditions: (TA = +25°C unless otherwise specified) Parameter Symbol Recommended Supply Voltage Operating Supply Voltage Range Test Conditions Min VCC Typ Max 9 or 12 VCCop 8.2 Unit V − 13.2 V Note 3. Always turn on the protective resistance when drawing a line directly out from the IC at usage. (Pin2, Pin11, Pin12, etc.) Note 4. A capacitor with favorable humidity characteristics should be used for Pin13. (ex. OS capacitor) Note 5. Pin8 (N.C.) should always be open. Electrical Characteristics: (TA = +25°C, VCC = 12V unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Unit 42 48 57 mA 36 41 49 mA 6.6 7.0 7.4 V 5.0 5.4 5.8 V 10.6 11.0 11.4 V 7.6 8.0 8.4 V − 0 0.5 V − 0 0.5 V 3.0 5.9 8.0 V 2.6 4.5 6.0 V 33 39 45 dB/µV 37 43 49 dB/µV VIF Block Circuit Current I9 V13 = 5V, S1 = ON VCC = 9V No−Signal Video Output Voltage V21 V13 = 5V, S1 = ON VCC = 9V Maximum RF AGC Voltage V10H V13 = 7V, S1 = OFF VCC = 9V Minimum RF AGC Voltage V10L V13 = 7V, S1 = ON VCC = 9V No−Signal AFT Voltage V14 V13 = 5V, S1 = ON VCC = 9V Input Sensitivity Vi S1 = OFF VCC = 9V AGC Range Maximum Allowable Input Video Output Amplitude GR S1 = ON 60 66 − dB Vimax S1 = ON 100 105 − dB/µV VO(video) S1 = ON VCC = 9V Output S/N S/N S1 = ON 1.95 2.25 2.55 VP−P 1.5 1.75 2.0 VP−P 49 55 − dB Electrical Characteristics (Cont’d): (TA = +25°C, VCC = 12V unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Unit VIF Block (Cont’d) Sync Signal Tip Voltage 920kHz Beat Level Frequency Characteristics V21(tip) I920 fc Differential Gain DG Differential Phase DP Maximum AFT Voltage Vi = 10mV, S1 = ON 4.15 4.45 4.75 V VCC = 9V 3.25 3.55 3.85 V P = 0, C = −4dB, S = −14dB, S1 = ON 37 43 − dB P = 0, S = −14dB 6 8 − MHz Vi = 10mV, 87.5% MOD, fp = 58.75MHz 58 75MHz − 3 6 % − 2 5 deg 11.0 11.5 12.0 V 8.0 8.5 9.0 V 0 0.4 1.0 V − 0.3 1.0 V 8.9 9.3 9.7 V 6.8 7.2 7.6 V 5.3 5.7 6.1 V 4.0 4.4 4.8 V 3.4 3.7 4.0 V 2.5 2.8 3.1 V 5.3 5.7 6.1 V 3.7 4.1 4.5 V 50 70 100 mV/kHz 30 43 60 mV/kHz V14H VCC = 9V Minimum AFT Voltage V14L VCC = 9V White Noise Threshold Voltage VWTH VCC = 9V White Noise Clamp Voltage VWCL VCC = 9V Black Noise Threshold Voltage VBTH S1 = ON VCC = 9V Black Noise Clamp Voltage VBCL S1 = ON VCC = 9V AFT Detection Sensitivity Sf VCC = 9V VIF Input Resistance Ri (VIF) f = 58.75MHz 0.8 1.3 1.75 kΩ VIF Input Capacitance Ci (VIF) f = 58.75MHz − 3.0 6.0 pF 0.6 1.6 − MHz APC Pull−In Range fPU−2 S1 = ON fPL−2 VCO Maximum Variable Range ∆fU − V18 = 3V, S1 = ON 0.6 − ∆fL VCO Control Sensitivity SIF Output Signal Voltage −1.6 −0.8 MHz 1.6 MHz − −1.6 −0.8 MHz V18 = 5V to 2.6V 1.5 3.1 6.2 kHz/mV P/S = 20dB 120 170 240 mVrms 90 130 180 mVrms VI (lim) − 33 39 dB/µV VO 400 600 790 mVrms 400 600 790 mVrms β VO (SIF) VCC = 9V SIF Block (V13 = 5V) SIF Limiting Sensitivity FM Detection Output Voltage VCC = 9V AMR AMR 40 49 − dB Total Harmonic Distortion THD − 0.5 1.0 % S/N (SIF) 60 78 − dB SIF S/N Electrical Characteristics (Cont’d): (TA = +25°C, VCC = 12V unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Unit 0.5 2.3 − V 0.5 1.6 − V 0.5 1.9 − V 0.5 1.1 − V 0.5 2.0 − V 0.5 1.9 − V 5.4 6.0 6.6 V 3.9 4.5 5.1 V Mute Defeat AFT Defeat Start Voltage VD11 VCC = 9V AV Mute V4TH VCC = 9V FM Mute V2TH VCC = 9V AFT Defeat Voltage VD14 VCC = 9V Pin Connection Diagram FM Detector Output 1 FM Discriminator 2 IF AGC 2 3 RF AGC VR 4 VIF Input 5 VIF Input 6 GND 7 N.C. 8 VCC 9 RF AGC Output 10 AFT Coil 11 AFT Coil 12 24 23 22 21 20 19 18 17 16 15 14 13 24 13 1 12 SIF Input GND GND Video Output EQ Amp GND EQ Amp In APC Filter Composite Video Output VCO Tank VCO Tank AFT Output IF AGC 1 .862 (21.9) Max .259 (6.57) .165 (4.2) .070 (1.78) .770 (19.5) .115 (2.9) .326 (8.28)