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Partno	Mfg	Dc	Qty	Available	Descript
TDA7706	STM	N/a	6309	avai	HIT2 Highly Integrated AM/FM Tuner with HD interface

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TDA7706
HIT2 Highly Integrated AM/FM Tuner with HD interface
September 2013 Doc ID 022898 Rev 3 1/16
TDA7706
Highly integrated tuner for AM/FM car-radio
Data brief  production data
Features FM, AM and weather band reception Fully integrated VCO for world tuning High performance PLL for fast RDS system Integrated AM-LNA and PIN diodes Automatic self alignment for FM front-end pre-
selection filter and image rejection Integrated IF filters with high selectivity,
dynamic range and adaptive bandwidth control Drift-free Digital-IF signal processing with high
performance RDS demodulation with group and block
synchronization High performance stereo decoder with noise-
blanker Digital interface for HD Radio™ reception with
digital audio blending Fully programmable DSP coreI2 C bus-controlledI2 S input/output digital audio interfaces Single 5 V supply LQFP64 package
Description
The TDA7706 highly integrated tuner is a
high/performance AM/FM tuner IC for car-radio
applications, suitable for HD Radio™ reception.
It contains mixers and IF amplifiers for AM, FM
and WX, fully integrated VCO and PLL
synthesizer, IF- processing including adaptive
bandwidth control, stereo-decoder, RDS decoder,
and digital interfaces for external HD Radio™
decoding on a single IC.
AM/FM IBOC or DRM base band filtering is
available in parallel to standard analog reception.
The utilization of digital signal processing results
in numerous advantages against today's tuners:
very low number of external components, very
small space occupation and easy application,
very high selectivity due to digital filters, high
customization possibility through software control,
automatic alignment and a powerful DSP for
custom processing.

Table 1. Device summary
Contents TDA7706
2/16 Doc ID 022898 Rev 3
Contents Block diagram and pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Function description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.1 FM - mixers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.2 FM - AGC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.3 AM - LNA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.4 AM - AGC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.5 AM - Mixers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.6 IF A/D converters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.7 Audio D/A converters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.8 VCO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.9 PLL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.9.1 Tuner PLL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.10 Crystal oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.11 DSP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.12 HD Radio connectivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Application schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.1 Basic application schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
TDA7706 Block diagram and pin description
Doc ID 022898 Rev 3 3/16 Block diagram and pin description
1.1 Block diagram
Figure 1. Functional block diagram
Block diagram and pin description TDA7706
4/16 Doc ID 022898 Rev 3
1.2 Pin description
Figure 2. Pin connection (top view)

Table 2. Pin description
TDA7706 Block diagram and pin description
Doc ID 022898 Rev 3 5/16
Table 2. Pin description (continued)
Block diagram and pin description TDA7706
6/16 Doc ID 022898 Rev 3
Table 2. Pin description (continued)
TDA7706 Block diagram and pin description
Doc ID 022898 Rev 3 7/16
Table 2. Pin description (continued)
Block diagram and pin description TDA7706
8/16 Doc ID 022898 Rev 3
Table 2. Pin description (continued)