描述 Description

The Low IF Tuner HIgh performance One chips, TEF6686 and TEF6688, are single-chipradio ICs including an AM/FM radio tuner and software-defined radio signal processing.They extend NXP Semiconductors’ broad, industry-proven car radio single tuner portfolio,offering outstanding radio performance with the widest range of features and state of theart software algorithms at most optimized system costs.
Both devices are available in HVQFN packages occupying the smallest PCB space andare suitable for dual- and multi-layer PCBs. The radio receiver includes highest featuresets, the FM/AM front-ends, tuning synthesizer, channel filtering, FM ChannelEqualization, FM multipath improvement, demodulation, FM stereo decoding, weak signalprocessing, noise blanking and RDS and provides an interface to a DARCdemodulator/decoder.
The TEF6686 and TEF6688 can provide stereo audio in digital format on the I2S outputsand on the audio DAC outputs. The TEF6688 supports the digital radio standards HDRadio and Digital Radio Mondiale (DRM) digital radio when used with NXPSemiconductors’ digital radio coprocessors such as SAF356X and SAF360X.

特性 Features

Alignment free digital receiver including tuner and software-defined radio processing
Command based high-level user interface combining high control flexibility with ease of control
Read information with device and tuning status, reception quality and RDS data
FM receiver with a tuning range of 65 MHz to 108 MHz covering Eastern Europe (OIRT), Japan, Europe and US bands
AM receiver covering LW, MW and full SW
Fully integrated tuning system with low phase noise and fast tuning
FM LNA with AGC
State-of-the art FM Improved Multipath Suppression
FM Channel Equalization
Soft Mute on Modulation
Stereo High Blend
FM mixer for frequency conversion to a low IF complex signal (AM SW)
AM LNA with AGC, matching active and passive antenna applications
AM mixer for frequency conversion to a low IF complex signal
High dynamic range Sigma Delta IF ADC
Digital IF signal processing including decimation, shift to baseband, AGC control, I/Q correction, variable IF bandwidth filtering (PACS) and demodulation
FM stereo decoding
TEF6688 baseband I2S output supporting HD Radio and DRM1 with external digital radio coprocessor (SAF356X or SAF360X)
Blending function for HD Radio reception (TEF6688)
AM and FM noise blanking, Signal quality detection and weak signal processing
Advanced RDS and RBDS demodulation and decoding
MPX output supporting DARC demodulator
One I2S input and one I2S output
Two mono audio DACs
Single 3.3 V supply voltage
Fast mode I2C-bus (400 kHz)
Configurable GPIO pins for RDS, Quality Status Interrupt and generic I2C-bus controlled I/O
Qualified in accordance with AEC-Q100
Target ApplicationsThe TEF668X is a single tuner AM/FM receiver for automotive applications and supportsanalog AM/FM and HD/DRM reception (HD/DRM is supported in TEF6688 only).
Additionally, due to a common technology platform, the TEF668X can be combined withTEF701X, SAF775X and SAF360X for optimal system application through commoncrystal oscillator sharing.

應(yīng)用 Application

The TEF668X is a single tuner AM/FM receiver for automotive applications and supportsanalog AM/FM and HD/DRM reception (HD/DRM is supported in TEF6688 only).Additionally, due to a common technology platform, the TEF668X can be combined withTEF701X, SAF775X and SAF360X for optimal system application through commoncrystal oscillator sharing.