Overview
The SAF7741HV/N140ZK, produced by NXP USA Inc., is a sophisticated combined Intermediate-Frequency (IF) car radio and audio Digital Signal Processor (DSP). This integrated circuit is designed to enhance listening clarity and noise suppression in car radio systems. It combines analog IF input, digital radio and audio processing, sample-rate converters, and both digital and analog audio output. The device is compatible with the TEF7000 and TEF6730 integrated tuners for analog and digital AM/FM decoding and sound processing. It offers user-specific functions that can be configured to match the software platforms of various car-radio manufacturers, providing a high level of product differentiation.
Key Specifications
| Parameter | Description |
|---|---|
| Package | HLQFP144: plastic thermal enhanced low profile quad flat package; 144 leads; body 20 mm x 20 mm x 1.4 mm |
| Operating Temperature | -40°C to 85°C |
| Supply Voltage | 1.8 V (digital core), 3.3 V (peripheral cells) |
| Interfaces | I²C, I²S, LSB, SPDIF |
| Compliance | Lead free / RoHS Compliant |
| Qualification | AEC-Q100 qualified |
Key Features
- Integrated IF car radio and audio DSP with multiple powerful cores
- Analog IF input, digital radio and audio processing, sample-rate converters, and digital and analog audio output
- Compatibility with TEF7000 and TEF6730 integrated tuners for analog and digital AM/FM decoding and sound processing
- Improved FM weak-signal processing, integrated 19 kHz Multiplexed (MPX) filter and de-emphasis, electronic adjustment of FM/AM level and FM channel separation
- Variable IF bandwidth controlled by DSP software, selective IF bandwidth for wideband FM, FM Weatherband, and AM
- Digital stereo decoder for FM and AM, PLL to generate the audio reference sample-rate clock
- Internal voltage regulator for the 1.8 V supply, I²C bus-controlled, possibility of powering down unused blocks to reduce power dissipation
Applications
The SAF7741HV/N140ZK is primarily designed for use in car radio systems, enhancing the audio and radio signal processing capabilities. It is suitable for various automotive audio applications, including:
- Car radios with digital and analog AM/FM decoding
- HD Radio processing
- Audio signal processing and enhancement
- Automotive infotainment systems requiring advanced DSP capabilities
Q & A
- What is the primary function of the SAF7741HV/N140ZK?
The primary function is to serve as a combined Intermediate-Frequency (IF) car radio and audio Digital Signal Processor (DSP) for enhancing listening clarity and noise suppression in car radio systems.
- What package type does the SAF7741HV/N140ZK use?
The device is packaged in a HLQFP144: plastic thermal enhanced low profile quad flat package with 144 leads and a body size of 20 mm x 20 mm x 1.4 mm.
- What are the key interfaces supported by the SAF7741HV/N140ZK?
The device supports I²C, I²S, LSB, and SPDIF interfaces.
- Is the SAF7741HV/N140ZK compliant with any specific automotive standards?
Yes, it is qualified in accordance with AEC-Q100 and is lead free / RoHS Compliant.
- What is the operating temperature range of the SAF7741HV/N140ZK?
The operating temperature range is -40°C to 85°C.
- What tuners is the SAF7741HV/N140ZK compatible with?
The device is compatible with the TEF7000 and TEF6730 integrated tuners for analog and digital AM/FM decoding and sound processing.
- What are some of the advanced features of the SAF7741HV/N140ZK?
It includes improved FM weak-signal processing, integrated 19 kHz Multiplexed (MPX) filter and de-emphasis, electronic adjustment of FM/AM level and FM channel separation, and variable IF bandwidth controlled by DSP software.
- Can the SAF7741HV/N140ZK be configured for different software platforms?
Yes, it offers user-specific functions that can be configured to match the software platforms of various car-radio manufacturers.
- How does the SAF7741HV/N140ZK manage power consumption?
The device allows powering down unused blocks to reduce power dissipation.
- What is the purpose of the PLL in the SAF7741HV/N140ZK?
The PLL generates the audio reference sample-rate clock.
