TEF6730AHW
1. General description
The TEF6730A is a car radio tuner front-end for digital-IF reception, especially designed
for co-operation with digital-IF DSP back-ends of the SAF773x and SAF778x families.
The FM tuner features single conversion to IF = 10.7 MHz and integrated image rejection;
capable for FM 65 MHz to 108 MHz and weather band reception. The AM tuner features
single conversion to IF = 10.7 MHz with an integrated AM front-end, capable for LW, MW
and full SW reception. A combined AM/FM IF AGC amplifier provides a suitable IF signal
to the ADC in IF DSP.
The device can be controlled via the fast-mode I2C-bus (400 kHz) and includes
autonomous tuning functions for easy control. No manual alignments are required.
2. Features
n FM mixer for conversion of FM RF to IF 10.7 MHz with large dynamic range, high
image rejection and selectable mixer gain
n Selectable high or low injection of LO
n AGC PIN diode drive circuit for FM RF AGC with detection at RF and IF, including
keyed AGC function
n RF input for weather band applications
n Integrated AM front-end LNA
n Integrated AM RF AGC for low desensitization and AGC PIN diode drive circuit with
detection at RF and IF
n AM mixer for conversion of AM RF to IF 10.7 MHz
n AM/FM IF AGC amplifier with large dynamic range, gain controlled from IF DSP
n AM and FM front-end AGC information is available via the I2C-bus
n Low phase noise local oscillator with reliable start-up behavior
n In-lock detection for optimized adaptive PLL tuning speed
n Programmable divider and mixer dividers for reception of FM (65 MHz to 108 MHz),
weather band, AM LW, MW and full SW
n Two antenna DAAs
n Sequential state machine supporting all tuning actions including AFU for RDS
n Interfacing signals for IF AGC, FM keyed AGC, AFU and reference frequency to
IF DSP for optimum system performance
n Software controlled flag outputs
n Selection of four I2C-bus addresses
n Qualified in accordance with AEC-Q100
