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| NTE1580 Integrated Circuit IF Amp & Detector Description: The NTE1580 is an IF amplifier in a 14-Lead DIP type package with a symmetrical FM demodulator and an AF amplifier with adjustable output voltage. The AF amplifier is also provided with an output for volume control and an input for VCR operation. The input and output of the NTE1580 are especially designed for LC-circuits, but the input can also be used with a ceramic filter. Absolute Maximum Ratings: Maximum Supply voltage (Pin11, Note 1), Vp = V11-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18V Maximum Adjustment Voltage (Pin5), V5-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6V Maximum Total Power Dissipation, Ptot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 400mW Bypass Resistance, R13-14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1k Operating Ambient Temperature Range, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -15 to +70C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40 to +125C Note 1. Supply voltage operating range is 10V to 18V Electrical Characteristics: (VP = 12V, TA = +25C, f = 5.5MHz unless otherwise specified) Parameter IF Voltage Gain Input Voltage Starting Limiting IF Output Voltage at Limiting (Peak-to-Peak) AM Suppression IF Residual Voltage Without De-Emphasis Pin12 Pin8 AF Voltage Gain AF Adjustment AF Output Voltage Control Range Adjustment Resistor DC Voltage Portion at the AF Outputs Pin12 Pin8 Symbol GV IF6-14 Vi VO IF(p-p) f = 50kHz, Vi = 500V, fm = 1kHz, m = 30% f = 50kHz, fm = 1kHz Test Conditions Min - - - 50 Typ 68 30 250 60 Max Unit - 60 - - dB V mV dB VIF12 VIF8 GV AF8-3 VO(AF) VO(AF) R4-5 V12-1 V8-1 Note 2 R4-5 = 5k, R5-1 = 13k - - - 20 70 30 20 7.5 28 85 1 to 10 - - - 36 - mV mV dB dB k - - 5.6 4.0 - - V V Note 2. Pin5 must be connected to Pin4, when volume control adjustment is not applicable. Electrical Characteristics (Cont'd): (VP = 12V, TA = +25C, f = 5.5MHz unless otherwise specified) Parameter Output Resistance of the AF outputs Pin12 Pin8 Input Resistance of the AF Input Stabilized Reference Voltage Source Resistance of Reference Voltage Source Hum Suppression Pin12 Pin8 Supply Current (Pin11) IF Input Impedance Symbol RO12-1 RO8-1 RI3-1 V4-1 = Vref R4-1 Test Conditions Min - - - 4.2 - Typ 1.1 1.1 2.0 4.8 12 Max Unit - - - 5.3 - k k k V V12/V11 V8/V11 IP = I11 |Zi| VOAF(rms) 4.5pF 6.0pF - - 9.5 - 15 - - - 30 35 13.5 40 - 1.0 1.2 1.0 - - 17.5 - - - - - dB dB mA k k V V % AF Output Voltage Pin12 Pin8 Distortion f = 50kHz, Vi = 10V, fm = 1kHz, QO = 45 f = 50kHz, Vi = 10V, fm = 1kHz, QO = 20 dtot Pin Connection Diagram GND 1 Bias Decoupling 2 Recorder Audio Input 3 Volume Control Bias 4 Volume Control 5 IF Amp Output 6 Phase Shift Network 7 14 IF Input 13 IF Input Bias 12 Constant Level Audio Out 11 VCC 10 IF Amp Output 9 Phase Shift Network 8 Volume Controlled Audio Output 14 8 1 7 .785 (19.95) Max .300 (7.62) .200 (5.08) Max .100 (2.45) .600 (15.24) .099 (2.5) Min |
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