Overview
The SAA7706H/N210S,557 is a Digital Signal Processor (DSP) designed specifically for car radio systems, manufactured by NXP USA Inc. This component is integral in performing various signal processing functions within car radio systems, including those behind the car radio tuner and in front of the power amplifiers. It supports multiple input sources such as AM, FM, CD, tape, and phone inputs, and is capable of simultaneous radio and audio processing.
Key Specifications
| Parameter | Conditions | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|
| Maximum Conversion Input Level (RMS) | THD < 1% at 1 kHz; bandwidth = 20 kHz | 0.55 | - | 0.66 | V |
| Signal-to-Noise Ratio (S/N) | Input signal at 1 kHz; bandwidth = 20 kHz; 0 dB reference = 0.55 V (RMS) | -85 | - | -75 | dB |
| Total Harmonic Distortion-plus-Noise to Signal Ratio (THD + N)/S | Measured with system one at 0 dB | -90 | - | -85 | dB |
| Crystal Oscillator Frequency | - | - | 11.2896 | - | MHz |
| Package Type | - | - | QFP80 | - | - |
Key Features
- 5-bitstream 3rd-order sigma-delta Analog-to-Digital Converters (ADCs) with anti-aliasing broadband input filter
- 1-bitstream 1st-order sigma-delta ADC with anti-aliasing broadband input filter
- 4-bitstream Digital-to-Analog Converters (DACs) with 128-fold oversampling and noise shaping
- Integrated semi-digital filter; no external post filter required for DAC
- Dual media support: allowing separate front-seat and rear-seat signal sources and separate control
- Simultaneous radio and audio processing
- Digital FM stereo decoder and interference suppression
- RDS demodulation via separate ADC; with buffered output option
- Noise generator for frequency response measurements
- Boot-up ROM for fast start-up
- Signal level, noise, and multipath detection for AM or FM signal quality information
Applications
The SAA7706H/N210S,557 is primarily used in high-end car radio systems. It is designed to handle various signal processing tasks, including interference absorption, stereo decoding for FM and AM, RDS demodulation, and weak signal processing.
Q & A
- What is the primary function of the SAA7706H/N210S,557?
The primary function of the SAA7706H/N210S,557 is to perform various signal processing tasks in car radio systems, including AM, FM, CD, tape, and phone inputs.
- What type of ADCs does the SAA7706H/N210S,557 use?
The SAA7706H/N210S,557 uses 5-bitstream 3rd-order sigma-delta ADCs and 1-bitstream 1st-order sigma-delta ADCs, both with anti-aliasing broadband input filters.
- What is the role of the integrated semi-digital filter in the SAA7706H/N210S,557?
The integrated semi-digital filter eliminates the need for an external post filter for the DAC, enhancing the overall signal quality.
- Does the SAA7706H/N210S,557 support simultaneous radio and audio processing?
- What is the package type of the SAA7706H/N210S,557?
The SAA7706H/N210S,557 comes in a QFP80 (Quad Flat Package) with 80 leads.
- Is the SAA7706H/N210S,557 still in production?
No, the SAA7706H/N210S,557 is no longer manufactured and is considered obsolete.
- What is the crystal oscillator frequency of the SAA7706H/N210S,557?
The crystal oscillator frequency is 11.2896 MHz.
- Does the SAA7706H/N210S,557 support RDS demodulation?
- What kind of noise detection does the SAA7706H/N210S,557 offer?
The SAA7706H/N210S,557 offers signal level, noise, and multipath detection for AM or FM signal quality information.
- What are the typical applications of the SAA7706H/N210S,557?
The SAA7706H/N210S,557 is primarily used in high-end car radio systems.
