SAA7706H/107

Product Summary

The SAA7706H/107 is a car radio digital signal processor (DSP). The SAA7706H/107 performs all the signal functions in front of the power amplifiers and behind the car radio tuner AM and FM outputs and the CD, tape and phone inputs. Some functions of the SAA7706H/107 have been implemented in hardware (FM stereo decoder, RDS-demodulator and FM Interference Absorption Circuit (IAC) and are not freely programmable. Digital audio signals from external sources with the Philips I2S-bus and the LSB-justified 16, 18, 20 and 24 bits format or SPDIF format are accepted. The big advantage of the SAA7706H/107 is the dual media support; this enables independent front seat and rear seat audio sources and control.

Parametrics

SAA7706H/107 absolute maximum ratings: (1)VDD supply voltage: -0.5 to +3.6 V; (2)Vn input voltage on any pin: -0.5 to +5.5 V; (3)IIK DC input clamping diode current VI < -0.5 V or VI > VDD + 0.5 V: ±10 mA; (4)IOK DC output clamping diode current VO < -0.5 V or VO > VDD + 0.5 V: ±20 mA; (5)IO(sink/source)DC output source or sink current -0.5 V < VO < VDD + 0.5 V: ±20 mA; (6)IDD,ISS supply current per supply pin: ±50 mA; (7)Tamb ambient operating temperature: -40 to +85 ℃; (8)Tstg storage temperature range: -65 to +125 ℃; (9)VESD ESD voltage human body model 100 pF; 1500 W: 2000 V; (10)machine model 200 pF; 0.5 mH; 10 W: 200 V; (11)Ilu(prot)latch-up protection current CIC spec/test method: 100 mA; (12)Ptot total power dissipation: 890 mW.

Features

SAA7706H/107 features: (1)5-bitstream 3rd-order sigma-delta Analog-to-Digital Converters (ADCs)with anti-aliasing broadband input filter; (2)1-bitstream 1st-order sigma-delta ADC with anti-aliasing broadband input filter; (3)4-bitstream Digital-to-Analog Converters (DACs)with 128-fold oversampling and noise shaping; (4)Integrated semi-digital filter; no external post filter required for DAC; (5)Dual media support: allowing separate front-seat and rear-seat signal sources and separate control; (6)Simultaneous radio and audio processing; (7)Digital FM stereo decoder; (8)Digital FM interference suppression; (9)RDS demodulation via separate ADC; with buffered output option; (10)Two mono Common-Mode Rejection Ratio (CMRR)input stages for voice signals from phone and navigation inputs; (11)Phone and navigation mixing at DAC front outputs Two stereo CMRR input stages (CD-walkman and CD-changer etc.); (12)Analog single-ended TAPE and AUX input; (13)Separate AM-left and AM-right inputs in the event of use of external AM stereo decoder; (14)One digital input: I2S-bus or LSB-justified format; (15)Two digital inputs: SPDIF format; (16)Co-DSP support via I2S-bus or LSB-justified format; (17)Audio output short-circuit protected; (18)I2C-bus controlled (including fast mode); (19)MOST bus interfacing (details in separate manual); (20)Phase-locked loop derives the internal clocks from one common fundamental crystal oscillator; (21)Combined AM/FM level input.

Diagrams