SAA7706H/N107,557

Digital Signal Processor Dsp Overview

The SAA7706H/N107,557 is a car radio Digital Signal Processor (DSP) manufactured by NXP USA Inc., originally developed by Philips Semiconductors. It operates on a 3.3 V supply with a typical digital current of 110 mA and analog current of 40 mA. The device features five sigma-delta ADCs and four bitstream DACs with 128-fold oversampling. It supports I2C, I2S, LSB, and SPDIF interfaces within an 80-PQFP package. Designed for high-end automotive audio systems, it handles simultaneous FM/AM radio processing and external audio sources like CD or tape.

Digital Signal Processor Dsp Feature Summary

• Integrated hardware FM stereo decoder, RDS demodulator, and interference absorption circuit
• Dual media support enabling independent front-seat and rear-seat audio source control
• Four-channel 5-band parametric equalizer and 9-band mono audio spectrum analyzer
• Supports Dolby-B noise reduction, dynamic loudness, and voice-over mixing for phone/navigation

Digital Signal Processor Dsp Applications

• High-end car radio systems requiring integrated DSP functionality
• Automotive audio setups utilizing dual-zone front and rear seat audio distribution
• Systems integrating AM/FM tuners with external digital audio inputs via I2S or SPDIF

Digital Signal Processor Dsp Procurement Notes

This component is officially listed as discontinued by the manufacturer. Verification of availability requires checking authorized distributors for remaining stock or surplus inventory. Ensure compatibility with existing system designs as no active production is confirmed. Cross-reference part numbers such as SAA7706H/N107 or SAA7706H/N108Y for potential alternative packaging or suffix variations.

Digital Signal Processor Dsp Selection Notes

Select this component for applications requiring a dedicated DSP for car radios with specific analog front-end requirements. It provides built-in FM/AM decoding and RDS handling, reducing external component count. Verify that the design utilizes a 3.3 V logic level and accommodates the 80-lead QFP package dimensions. Consider the operating temperature range of -40°C to +85°C for automotive environmental compliance.

Digital Signal Processor Dsp Part Context

The SAA7706H belongs to the SAA77 series of audio processors from NXP (formerly Philips). It is pin-compatible with the SAA7705 and SAA7708 models, facilitating design upgrades or replacements within similar form factors. The device represents an evolution in integrated car audio DSPs, combining analog input conditioning with extensive digital signal processing capabilities in a single chip.

Digital Signal Processor Dsp Replacement Considerations

Publicly confirmed substitute part numbers are not explicitly listed in the provided documentation. Designers should verify pin compatibility with the SAA7705 and SAA7708 if considering direct swaps, though functional differences may exist. Consult NXP technical support for current equivalent recommendations given the discontinued status.