TDA7706

Part: TDA7706 — STMicroelectronics

Type: Highly integrated tuner for AM/FM car-radio

Description: The TDA7706 is a highly integrated AM/FM tuner IC for car-radio applications, suitable for HD Radio™ reception, featuring a fully integrated VCO and PLL synthesizer, digital IF processing, stereo decoder, RDS decoder, and digital interfaces.

Operating Conditions:

• Supply voltage: 5 V
• Crystal oscillator frequency: 36.48 MHz
• PLL settling time: ~100 μs (for fast RDS applications)

Key Specs:

• VCO center frequency: Approximately 2.7 GHz
• PLL frequency step: 5 kHz (FM), 500 Hz (AM)
• PIN diode driver current: up to 15 mA
• AM LNA maximum gain: 26 dB (with 470 ohm external resistor)
• IFADC sampling frequency: 36.48 MHz
• Audio DAC dynamic range: >100 dB

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 preselection 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 noiseblanker
• Digital interface for HD Radio™ reception with digital audio blending
• Fully programmable DSP core
• I2C bus-controlled
• I2S input/output digital audio interfaces
• Single 5 V supply

Applications:

• Car-radio applications
• HD Radio™ reception

Package:

• LQFP64 (10x10x1.4mm)

• ■ 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 preselection 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 noiseblanker
• ■ Digital interface for HD Radio™ reception with digital audio blending
• ■ Fully programmable DSP core
• ■ I 2 C bus-controlled
• ■ I 2 S input/output digital audio interfaces
• ■ Single 5 V supply
• ■ LQFP64 package

Figure 2. Pin connection (top view)

Table 2. Pin description

Table 2. Pin description

Table 2. Pin description (continued)

Table 2. Pin description (continued)

Table 2. Pin description (continued)

Table 2. Pin description (continued)

Table 2. Pin description (continued)

Table 2. Pin description (continued)

Table 2. Pin description (continued)

Table 2. Pin description (continued)

Figure 6. FM wide-band application

In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK ® packages, depending on their level of environmental compliance. ECOPACK ® specifications, grade definitions and product status are available at: www.st.com .

ECOPACK ® is an ST trademark.