描述 Description

Archived content is no longer updated and is made available for historical reference only.
The TEF6640, TEF6642, TEF6644 and TEF6646 are single-chip radio ICs containing an AM/FM radio tuner and software-defined radio signal processing.
The TEF6644 and TEF6646 are the premium versions that include the full available feature set. The TEF6640 and TEF6642 are the lite versions including a basic feature set.
The radio receiver includes the AM/FM front ends, tuning synthesizer, channel filtering, FM multipath improvement, demodulation, FM stereo decoding, weak signal processing, noise blanking and Radio Data System (RDS) reception. A maximum amount of digital signal processing is used, taking full advantage of the CMOS IC technology.
The output signals of the radio processing block are provided in digital format on the host I2S output (only TEF6642 and TEF6646) and in analog format on the audio DAC outputs.
The TEF6642 and the TEF6646 support the digital standards HD Radio and Digital Radio Mondiale (DRM) in combination with NXP terrestrial digital radio coprocessors such as SAF356x.

特性 Features

All in one digital receiver including tuner and software defined radio processing
Easy to control with high-level user interface
FM receiver with a tuning range from 65 MHz to 108 MHz covering OIRT, Japan, Europe and US bands
AM receiver covering Long Wave (LW), Medium Wave (MW) and full Short Wave (SW) bands
Fully integrated tuning system combining low phase noise and fast tuning times
FM Low-Noise Amplifier (LNA) with Automatic Gain Control (AGC)
FM mixer for frequency conversion to a low Intermediate Frequency (IF) complex signal
AM front-end LNA and AGC matching active and passive antenna applications
AM MW RF selectivity with integrated capacitor bank and automatic calibration
AM mixer for frequency conversion to a low IF complex signal
High dynamic range Sigma-Delta (SD) IF Analog-to-Digital Converter (ADC)
Digital IF signal processing including decimation, shift to baseband, AGC control, In-phase/Quadrature-phase (I/Q) correction, Precision Adjacent Channel Suppression (PACS), FM multipath suppression and demodulation
Baseband I2S output for support of HD Radio and DRM with external digital radio coprocessor (TEF6642 and TEF6646)
Signal quality detection, FM stereo decoding, noise blanking and weak signal processing
Advanced RDS and Radio Broadcast Data System (RBDS) demodulation and decoding with versatile output configuration
One synchronous I2S audio input and audio output in master mode (TEF6642 and TEF6646)
Digital audio processing with volume scaling (-12 dB to +6 dB)
HD Radio blending (TEF6642 and TEF6646)
One stereo audio Digital-to-Analog Converter (DAC)
Single 3.3 V supply voltage
Fast mode I2C-bus (400 kHz)
Built-in 1.2 V regulator control circuit
Qualified in accordance with AEC-Q100
Target ApplicationsSingle tuner AM/FM receiver for automotive applications supporting analog AM/FM and HD/DRM reception

應(yīng)用 Application

Single tuner AM/FM receiver for automotive applications supporting analog AM/FM and HD/DRM reception