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| Datasheet File OCR Text: |
| NTE787 Integrated Circuit AM Receiver Subsystem For Applications in a variety of AM broadcast and communications receivers and applications requiring an array of amplifiers. Description: The NTE787, a monolithic integrated circuit, is an AM subsystem that provides the converter, IF amplifier, detector, and audio preamplifier stages for an AM receiver. It also provides internal AGC for the first IF amplifier stage, delayed AGC for an optional external RF amplifier, a buffer stage to drive a tuning meter, and terminals facilitating the optional use of a tone control. This device features four independent transistor amplifiers, each incorporating internal biasing for temperature tracking. These amplifiers are particularly useful in general-purpose amplifier, oscillator, and detector applications in a wide variety of equipment designs. The NTE787 utilizes a 16-Lead DIP package and operates over an ambient temperature range of -40 to +85C. Features: D Excellent overload characteristics D AGC for IF amplifier D Buffered output signal for tuning meter D Internal Zener diode provides voltage regulation D Two IF amplifiers stages D Low-noise converter and first IF amplifier D Low harmonic distortion (THD) D Delayed AGC for RF amplifier D Terminals for optional inclusion of tone control D Operates from wide range of power supplies: V+ = 6 to 16 volts D Optional AC and/or DC feedback on wide-band amplifier D Array of amplifiers for general-purpose applications D Suitable for use with optional external RF stage, either MOS or bipolar Absolute Maximum Ratings: (TA = +25C unless otherwise specified) DC Supply Voltage (Across Pin5 and Pin3, Pin6, Pin13, Pin16 respectively) . . . . . . . . . . . . . . . 16V DC Current At Pin3, Pin6, Pin13, Pin16 respectively . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10mA At Pin10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30mA Device Dissipation (Up to TA = +50C), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 760mW Derate Above TA = +50C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.6mW/C Operating Ambient Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40 to +85C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65 to +150C Lead Temperature (During Soldering, 1/32" from case, 10sec max), TL . . . . . . . . . . . . . . . . . +265C Electrical Characteristics: (TA = +25C, V+ = 12V unless otherwise specified) Parameter Static Characteristics DC Voltage Pin1, Pin4, Pin9, Pin11 Pin2, Pin7, Pin8 Pin10 Pin12 Pin15 DC Current Pin3 Pin6 Pin10 Pin13 Pin16 Dynamic Characteristics Detector Output Audio Amplifier Gain Audio Distortion Sensitivity At Converter Stage Input At RF Stage Input Total Harmonic Distortion Input Resistance At Transistor Q1 At Transistor Q5 Input Capacitance At Transistor Q1 At Transistor Q5 Feedback Capacitance At Transistor Q1 At Transistor Q5 CFB CIN THD RIN AAF 30% Modulation f = 1kHz VOUT = 100mV fIN = 1MHz, Signal-to-Noise Ratio (S/N) = 20dB 30% Modulation No AGC, Input Frequency Signal (fIN) = 1MHz - - - - - - - - - - - - 75 30 0.2 200 100 1.0 3500 2000 17 12 1.5 1.5 - - - - - - - - - - - - mVrms dB % V/m V/m % pF pF pF pF V1, V4, V9, V11 V2, V7, V8 V10 V12 V15 I3 I6 I10 I13 I16 - - - - - - - - - - 0.7 1.4 5.6 0 3.5 0.35 1.0 20 0 1.2 - - - - - - - - - - V V V V V mA mA mA mA mA Symbol Test Conditions Min Typ Max Unit Pin Connection Diagram Converter Input Bypass Converter Input Converter Output 1st IF Amp Input Substrate GND 1st IF Amp Output 2nd IF Feedback 2nd IF Amp Input 1 2 3 4 5 6 7 8 16 VCC 15 Audio Output 14 From Detector Filter 13 AGC Output from RF Amp 12 To Tuning Meter 11 AGC Filter 10 VCC 9 To Detector Filter & Audio 16 9 1 8 .260 (6.6) Max .200 (5.08) Max .870 (22.0) Max .100 (2.54) .700 (17.78) .099 (2.5) Min |
Price & Availability of NTE787
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