Overview
The SAF7741HV/N129D/S31557, produced by NXP USA Inc., is a highly integrated Intermediate-Frequency (IF) car radio and audio Digital Signal Processor (DSP). This single-chip solution combines analog IF input, digital radio and audio processing, sample-rate converters, and digital and analog audio output. It is designed to enhance listening clarity and noise suppression while reducing multipath channel effects. The device is compatible with the TEF7000 and TEF6730 integrated tuners for analog and digital AM/FM decoding and sound processing.
Key Specifications
| Parameter | Description |
|---|---|
| Package Type | 144HLQFP |
| Supply Voltage | 1.8 V (digital core), 3.3 V (IF ADCs and RGPDACs) |
| Processing Cores | Multiple powerful cores for radio and audio processing |
| Interfaces | RDS bit clock/output, RDS data output, Fs system clock in/output, and more |
| Qualifications | Qualified in accordance with AEC-Q100 |
| Power Management | Intelligent power management with possibility of powering down unused blocks |
Key Features
- Combined IF car radio and audio DSP with integrated analog IF input and digital radio/audio processing.
- Sample-rate converters and digital/analog audio output for enhanced listening clarity and noise suppression.
- Support for TEF7000 and TEF6730 integrated tuners for AM/FM decoding.
- 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.
- Digital stereo decoder for FM and AM.
- Advanced digital Interference Absorption Circuit (IAC) for FM and AM.
- Digital Automatic Frequency Control (AFC) and RDS demodulation.
Applications
The SAF7741HV is primarily used in car radio systems, providing advanced digital signal processing for both radio and audio functions. It is designed to work with various car-radio manufacturers' systems, offering a high level of product differentiation. The device is suitable for applications requiring high-performance IF processing, noise suppression, and clear audio output.
Q & A
- What is the primary function of the SAF7741HV?
The primary function of the SAF7741HV is to serve as a combined Intermediate-Frequency (IF) car radio and audio Digital Signal Processor (DSP). - What type of package does the SAF7741HV come in?
The SAF7741HV comes in a 144HLQFP package. - What are the supply voltages for the SAF7741HV?
The supply voltages are 1.8 V for the digital core and 3.3 V for the IF ADCs and RGPDACs. - Is the SAF7741HV qualified for automotive use?
Yes, it is qualified in accordance with AEC-Q100. - What are some of the key software features of the SAF7741HV?
Key software features include improved FM weak-signal processing, integrated 19 kHz MPX filter, electronic adjustment of FM/AM levels, and digital stereo decoding for FM and AM. - How does the SAF7741HV manage power?
The device features intelligent power management with the possibility of powering down unused blocks to reduce power dissipation. - What types of interfaces does the SAF7741HV support?
The device supports RDS bit clock/output, RDS data output, Fs system clock in/output, and other interfaces. - Can the SAF7741HV be used with different car-radio systems?
Yes, it can be configured to match the software platform required by individual car-radio manufacturers. - What are some of the advanced processing algorithms supported by the SAF7741HV?
The device supports advanced algorithms such as digital Interference Absorption Circuit (IAC), digital Automatic Frequency Control (AFC), and RDS demodulation. - How does the SAF7741HV enhance audio quality?
The device enhances audio quality through sample-rate converters, digital and analog audio output, and advanced noise suppression techniques.
