TDA7706

The TDA7706 is an electronic component from STMicroelectronics. View the full TDA7706 datasheet below including specifications and datasheet sections.

Manufacturer

STMicroelectronics

Overview

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)

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
■ I 2 C bus-controlled
■ I 2 S input/output digital audio interfaces
■ Single 5 V supply
■ LQFP64 package

Pin Configuration

Figure 2. Pin connection (top view)

Table 2. Pin description

Pin	Pin name	I/O	Function	Description	Equivalent circuit
1	FMPINDRV	Out	FM	FM PIN diode driver output
2	FMPINDdec	In	FM	Integrated FM PINdiode decoupling	'!0'03
3	FMMIXdec	-	FM	FM RF signal ground
4	FMMIXin2	In	FM	FM mixer input 2
5	FMMIXin1	In	FM	FM mixer input 1	'!0'03
6	GNDRF	-	-	RF power ground	-

Table 2. Pin description

Table 2. Pin description (continued)

Pin	Pin name	I/O	Function	Description	Equivalent circuit
7	TCAM	-	-	AM AGC time constant	'!0'03
8	VCCRF	In	-	RF 5V supply	-
9	CK_SEL	In	-	Master/Slave clock operation select	'!0'03
10	GNDVCO	-	VCO	VCO ground	-
11	LFref	-	VCO	Loop filter reference	-
12	LF1	-	VCO	Loop filter output	-
13	VCCVCO	In	VCO	VCO 5V supply	-
14	TCAM2	-	VCO	AM AGC 2 nd order time constant	'!0'03
15	PINDdec	-	AM pin diode	AM AGC internal PIN diode decoupling
16	PINDin	-	AM pin diode	AM AGC internal PIN diode input
17	GNDLNA	-	AM LNA	AM LNA ground	-
18	LNAin	In	AM LNA	AM LNA input
19	LNAdec	-	AM LNA	AM LNA decoupling
20	LNAout	Out	AM LNA	AM LNA output	-
21	LNAin2	-	AM LNA	AM LNA input 2 nd stage	-

Table 2. Pin description (continued)

Table 2. Pin description (continued)

Pin	Pin name	I/O	Function	Description	Equivalent circuit
22	LNAout2	-	AM LNA	AM LNA output 2 nd stage
23	LNAdec2	-	AM LNA	AM LNA decoupling 2 nd stage
24	AMMIXin1	In	AM mixer inputs	AM mixer input 1	'!0'03
25	AMMIXin2	In	AM mixer inputs	AM mixer input 2	'!0'03
26	GNDSLINK	-	Supply, ground and reset	Internal inter-IC communication bus ground	-
27	Vdig	In	Supply, ground and reset	Front-end digital 5 V supply	-
28	VCCreg1V2	In	Supply, ground and reset	Internal 1.2 V regulator 5 V supply	-
29	REG1V2	Out	Supply, ground and reset	Internal 1.2 V regulator output
30	Vreg3v3	Out	Supply, ground and reset	Internal 3.3 V regulator output
31	RSTN	In	Supply, ground and reset	Reset (low active) Pull-up 50 k to 3.3 V IO supply
32	RDSint	Out	Supply, ground and reset	RDS interrupt output Pull-down 50 k to ground	-
33	I2CSDA	In/Out	I 2 C interface	I 2 C bus data Pull-up 50 k to 3.3 V IO supply
34	I2CSCL	In	I 2 C interface	I 2 C bus clock Pull-up 50 k to 3.3 V IO supply
35	VDD3V3	In	-	IO ring (3.3V) supply	-
36	GND3V3	-	-	IO ring (3.3V) supply	-

Table 2. Pin description (continued)

Table 2. Pin description (continued)

Pin	Pin name	I/O	Function	Description	Equivalent circuit
37	GPIO8 In/Out		HD Radio connectivity/ Audio output I2S interface	SAI clk Pull-down 50 k to ground, SINE_3V3_LIN pad	'!0'03
38	GPIO7	In/Out	Audio SAI word-select Pull-down 50 k to ground, SINE_3V3_LIN pad	SAI clk Pull-down 50 k to ground, SINE_3V3_LIN pad
39	In/Out		Audio SAI data-output Pull-down 50 k to ground, SINE_3V3_LIN pad	SAI clk Pull-down 50 k to ground, SINE_3V3_LIN pad	GPIO6
40	In/Out		Audio SAI data-input Pull-down 50 k to ground, SINE_3V3_LIN pad	SAI clk Pull-down 50 k to ground, SINE_3V3_LIN pad	GPIO5
41	In/Out		SAI Base-Band clock Pull-down 50 k to ground, SINE_3V3_LIN pad	SAI clk Pull-down 50 k to ground, SINE_3V3_LIN pad	GPIO4
42	In/Out		SAI Base-Band word-select Pull-down 50 k to ground, SINE_3V3_LIN pad	SAI clk Pull-down 50 k to ground, SINE_3V3_LIN pad	GPIO3
43	Out		SAI Base-Band I data Pull-down 50 k to ground, SINE_3V3_LIN pad	SAI clk Pull-down 50 k to ground, SINE_3V3_LIN pad	GPIO2
44	Out		SAI Base-Band Q data Pull-down 50 k to ground, SINE_3V3_LIN pad	SAI clk Pull-down 50 k to ground, SINE_3V3_LIN pad	GPIO1
45	In		HD blend Pull-down 50 k to ground		GPIO0
46	GND1V2 -	-	DSP core ground		-
47	VDD core 1V2	In -		DSP core 1.2V supply	-
48	Test	In -		Test Mode Pull-down 50 k to ground
49	VDDPLL1V2	In	-	Digital PLL 1.2 V supply	-
50	VDDIO1V2	In	-	Internal inter-IC communication 1.2V supply	-
51	VCC-REF	In	-	Front-end reference frequency and regulator 5 V supply	-

Table 2. Pin description (continued)

Table 2. Pin description (continued)

Pin	Pin name	I/O	Function	Description	Equivalent circuit
52	OSCin	In	Oscillator	Crystal oscilllator input	-
53	OSCout	Out	Oscillator	Crsystal oscillator output
54	GND-REF	-	-	Front-end reference frequency and regulator ground	-
55	Vrefdec	-	-	3.3 V Bias generation decoupling
56	GND-ADC_DAC	-	DAC	IFADC and audio DAC ground	-
57	DACoutL	Out	DAC	Audio output left
58	DACoutR	Out	DAC	Audio output right
59	VCC-ADC_DAC	In	DAC	IFADC and audio DAC 5V supply	-
60	VCC-PLL	In	PLL	Tuning PLL 5V supply	-
61	GND-PLL	-	PLL	Tuning PLL ground	-
62	PLLtest	Out	PLL	PLL Test output
63	TCFM	-	-	FM AGC time constant
64	TVDAC	Out	-	Tuning voltage output	-

Table 2. Pin description (continued)

Typical Application

Figure 6. FM wide-band application

Package Information

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.

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Related Variants

The following components are covered by the same datasheet.

Part Number	Manufacturer	Package
C99676	—	—
TDA7706CB	STMicroelectronics	—

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