NTE1527

NTE1527 Integrated Circuit FM, IF Amp/AFC & Meter Driver Function: D FM Section: IF Amp., Det., Driver for Tuning Meter D AM Section: Conv., IF Amp Features: FM D Incorporates a Full−Balance Differential Circuit to Obtain Stable, High Gain in the IF Amplifying Stage D Incorporates a Low−Distortion, Quadrature Detection Circuit (0.3% distortion at 100% modulation). D The Tuning Meter’s Driver Voltage is Logarithmic to Input AM D A High−Gain IF Amplifying Stage, with Input Level Allowable up to 100dBµ. D The Frequency Converting Stage Consists of a Single Transistor, while the Base, Emitter, and Collector are Provided with Pins to Ensure Handling Ease. Absolute Maximum Ratings: (TA = +25°C unless otherwise specified) Supply Voltage (Note 1), VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8V Power Dissipation, PT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 420mW Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −20° to +70°C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −55° to +125°C Note 1. Standard Operating Voltage = 5.5V Electrical Characteristics: (TA = +25°C unless otherwise specified) Parameter FM Limiting Sensitivity Recovered AF Voltage Total Harmonic Distortion Signal−to−Noise Ratio AM Rejection Ratio Symbol Vin(lim) VO THD S/N AMR Test Conditions Min − − − − − Typ 30 430 0.3 76 55 Max − − − − − Unit dBµ mV % dB dB −3dB point 106dBµ, 10.7MHz Mod. = 400Hz and 100% FM = 100%, 400Hz, FM 106dBµ, AM = 30%, 1kHz mod. Electrical Characteristics (Cont’d): (TA = +25°C unless otherwise specified) Parameter Signal Meter Output Detector Output Voltage DC Offset AM IF Sensitivity Symbol VM VO−VR Test Conditions Min − − − − Typ 1.6 310 −90 32 Max − − − − Unit V mV mV dBµ 106dBµ 106dBµ, at ±100kHz detuning Input Level at Output = 10mV (Mod. = 400Hz and 30%) Input = 74dBµ Mod. = 400Hz and 30% Between 100dBµ and it’s −10dB Input Level at Input it s S/N = 20dB ∆(VO−VR) (VO−VR) at 0dBµ SIF Recovered AF Voltage Total Harmonic Distortion Signal−to−Noise Ratio AGC Figure of Merit Usually Sensitivity VO THD S/N AGC SIF − − − − − 120 0.3 60 55 45 − − − − − mV % dB dB dB/m Note 2. FM Input Level; voltage level when SG output is terminated with SG’s Rg. Note 3. AM Input Level; voltage level when SG output is open. Pin Connection Diagram 1.007 (25.5) Max 1st AM IF Input 17 FM IF Input 1 Bypass 2 Bypass 3 Decoupling 4 GND 5 FM Output 6 Detector 7 Phase Compensation 8 GND 18 16 AM Converter Output 15 AM OSC 14 AM Converter Input 13 Bypass 12 2nd AM IF Output 11 AGC Bias 10 VCC 9 Signal Meter Output .188 (4.77) .200 (5.08) 18 8 9 .964 (24.4) 17 1 16 .248 (6.3) .252 (6.4) .291 (7.4) Max .020 (.508) .051 (1.29) .100 (2.54) Typ 15° .009 (0.22)