Description:

The NTE1533 is developed for Tuning AM on a Car Radio. It uses low voltage oscillation to achieve varactor diode tuning instead of variable inductance tuning.

Functions:

An RF Amplifier

A Mixer

An Oscillator with Automatic Level Control (ALC)

An IF Amplifier

A Detector

Normal AGC

Wide Band AGC on an RF Amplifier

Features:

Double Balanced Mixer: Recovers IF and Spurious Interference.

Normal AGC: Less Influence of Detector Output against Varying Input.

RF Wide Band AFC: Low Operating Level (300mVRMS) Recovers Intermodulation Distortion,Large Input Characteristic at Tuning Case of Varactor Diodes.

AGC Driving Output to FET: Applies AGC to the Input FET at Varactor Diode Tuning.

Automatic Level Control at Oscillator: Recovers a Tracking Error because an Oscillation Output is Stabilized at Low Voltage Level (350mVRMS) for Varactor Diode Tuning.

Reference Voltage Output: 5.6V Reference Voltage for Other Uses.

Compensation for VCC error: Lower gain error and distortion over 7.5V to 16.0V.

Lower Ripple Voltage: Less Modulation of Carrier by Supply Voltage Ripples.

Low Pop Noise: Of Time Constant of AGC at VCC On and Mode Switch On.

Absolute Maximum Ratings: (TA = +25°C unless otherwise specified)

Maximum Supply Voltage (Pin7, Pin13), VCCmax . . . . . . . .. . . . . . 16V

Maximum Output Voltage (Pin5), VO5 . . . . . . . . . . . . .. . . . . . . . . . 17V

Maximum Output Voltage (Pin8, Pin11), VO8, VO11 . . . . . . . . . . . 24V

Maximum Input Voltage (Pin2), VImax . . . . . . . . . . . . . . . . . . . . . 5.6V

Maximum Supply Current (Pin5, Pin7, Pin8, Pin11, Pin13 summed), ICCmax . . . . . . 35mA

Maximum Flow Out Current (Pin3), I3 . . . . . . . . . . . . . . . . . . . . . . . . . . 6mA

Allowable Power Dissipation (TA ≤ +45°C) , Pdmax . . . . . . . . . . . . . . . . 520mW

Operating Temperature Range, Topg . . . . . . . . . . . . . . . . .. . . . . . . −20° to +70°C

Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . .. . . . . . . −40° to +125°C