TDA1591T/V3,118

Encoders, Decoders, Converters Overview

The TDA1591T/V3,118 is a monolithic bipolar integrated circuit serving as a PLL stereo decoder and noise blanker for FM car radio applications. It operates within a supply voltage range of 7.5 to 12 V with a typical current consumption of 12 mA. The device provides an RMS audio output signal of 900 mV, maintaining a total harmonic distortion of 0.1% typical and 0.3% maximum. Key performance metrics include a signal-to-noise ratio of 76 dB and channel separation of 40 dB. It utilizes a ceramic resonator at 456 kHz for the phase-locked loop oscillator.

Encoders, Decoders, Converters Feature Summary

• Adjustment-free voltage controlled PLL oscillator designed for use with a 456 kHz ceramic resonator.
• Pilot signal dependent mono/stereo switching with analog control for smooth mono/stereo change over.
• Integrated adjacent channel noise suppression at 114 kHz and pilot cancellation capabilities.
• Analog control of de-emphasis time constants via High Cut Control (HCC) input.

Encoders, Decoders, Converters Applications

• Stereo decoder function in FM car radio systems.
• Noise blanking for FM reception signals.
• Source selector for AM/FM/cassette switching when VCO is off.

Encoders, Decoders, Converters Procurement Notes

Verify the component marking against the Philips Semiconductors product specification dated September 2, 1996. Confirm the package variant matches SOT163-1 (SO20) for the 'T' suffix. Ensure the ordering code corresponds to the specific tape and reel configuration if applicable, though the datasheet primarily lists the SO20 plastic small outline package dimensions.

Encoders, Decoders, Converters Selection Notes

Select this component for applications requiring a complete PLL stereo decoding solution with integrated noise blanking. Ensure the design accommodates the 7.5 V to 12 V supply range and provides appropriate external components for the 456 kHz ceramic resonator. Verify that the MPX input signal level aligns with the specified 1.7 V peak-to-peak requirement for optimal performance.

Encoders, Decoders, Converters Part Context

This part belongs to the TDA1591 family of integrated circuits manufactured by Philips Semiconductors, now NXP USA Inc. The 'T' designation indicates the SO20 plastic small outline package version, while 'V3,118' represents the specific ordering and packaging suffix. The device supersedes data from March 1992 and was published in its final product specification form in September 1996.

Encoders, Decoders, Converters Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Designers should consult official NXP replacement guides or contact technical support for cross-reference information regarding obsolete Philips Semiconductors products.