Description:

The NTE7050 is a Phase Lock Loop (PLL) stereo decoder with cassette head amplifiers in a 16–Lead DIP type package designed especially for car radios. This device has SDS circuitry where fluctuating signal strength can cause demodulation noise and distortion. The stereo decoder is compensated for a typical IF filter with a roll–off frequency of 50kHz (2dB down at 38kHz).

Features:

• A Voltage–Controlled Oscillator

• A Pilot Presence Detector and an Automatic Mono/Stereo Switch

• A Matrix and Two Amplifiers for the Left and Right Output Signal

• Two Output Buffers with 10dB Gain and Low Output Impedance

• Mute Circuit

• A Source Selector for Radio or Cassette

• An Input Amplifier of which the Gain can be Adjusted by means of an External Input Resistor

• A Pilot Cancelling Circuit for an Extra Suppression of the Pilot Signal of 15dB

• An Signal Dependent Stereo (SDS) Circuit for a Smooth Change Over from Stereo to Mono at Weak Tuner Input Signals