SI4704-D50-GM datasheet, PDF - EEWORLD Datasheet

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SI4704-D50-GM: DescriptionBaseband Circuit, CMOS, QFN-20; CategoryWireless rf/communication Telecom circuit; File Size1MB，34 Pages; ManufacturerSilicon Laboratories Inc; Environmental Compliance

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SI4704-D50-GM Overview

Baseband Circuit, CMOS, QFN-20

SI4704-D50-GM Parametric

Parameter Name	Attribute value
Is it Rohs certified?	conform to
Parts packaging code	QFN
package instruction	QFN-20
Contacts	20
Reach Compliance Code	compliant
JESD-30 code	S-XQCC-N20
length	3 mm
Number of functions	1
Number of terminals	20
Package body material	UNSPECIFIED
encapsulated code	HVQCCN
Package shape	SQUARE
Package form	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
Peak Reflow Temperature (Celsius)	NOT SPECIFIED
Certification status	Not Qualified
Maximum seat height	0.6 mm
Nominal supply voltage	3.3 V
surface mount	YES
technology	CMOS
Telecom integrated circuit types	BASEBAND CIRCUIT
Terminal form	NO LEAD
Terminal pitch	0.5 mm
Terminal location	QUAD
Maximum time at peak reflow temperature	NOT SPECIFIED
width	3 mm
Base Number Matches	1

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Si4704/05-D50

ROADCAST

F M R

ADIO

ECEIVER FOR

ON SUMER

LECTRONICS

Features



Worldwide FM band support

(64–108 MHz)

RDS/RBDS decoding engine

(Si4705 only)

Lowest power consumption

Received signal quality indicators

On-chip tuned resonance for

embedded antenna support

Multipath detection and mitigation

FM Hi-cut control

Advanced FM stereo-mono blend

Advanced audio processing

Not EN 55020 compliant*



Automatic gain control (AGC)

Integrated FM LNA

Image-rejection mixer

Frequency synthesizer with

integrated VCO

Low-IF direct conversion with no

external ceramic filters

2.7 to 5.5 V supply voltage

Dual 1.8 and 2.7 V power supplies

Stereo audio out

Ordering Information:

See page 27.

S Digital audio out



20-pin 3 x 3 mm QFN package



Pb-free/RoHS compliant

Pin Assignments

Si4704/05-GM

*Note:

*For consumer electronics applications that require EN 55020 compliance,

use Si4704/05-D60.

(Top View)

GPO3/DCLK

GPO2/INT

GPO1

Applications



Cellular handsets



Portable media devices



Dedicated data receiver



Personal navigation devices (PND)



GPS-enabled handsets and portable

devices

NC 1

FMI 2

RFGND 3

20 19 18 17 16

15 DOUT

Description

The Si4704/05-D50 FM/RDS/RDBS receivers provide the highest performance

and lowest power consumption available for portable devices today. The 100%

CMOS IC integrates the complete FM and data receiver function from antenna to

analog or digital audio and data out in a single 3 x 3 mm 20-pin QFN.

LPI 4

RST 5

SEN

SCLK

GND

PAD

SDIO

RCLK

10 11 VA

Functional Block Diagram

FM Antenna

FMI

RFGND

LNA

PGA

ADC

AGC

0/90

RSSI

AFC

RDS

(Si4705)

DIGITAL INTERFACE

ADC

DSP

DAC

ROUT

GPO

DCLK

DOUT

DFS

Si4704/05

DAC

LOUT

LPI

32.768 kHz (TYP)

RCLK

This product, its features, and/or its

architecture is covered by one or

more of the following patents, as well

as other patents, pending and

issued, both foreign and domestic:

7,127,217; 7,272,373; 7,272,375;

7,321,324; 7,355,476; 7,426,376;

7,471,940; 7,339,503; 7,339,504.

2.7–5.5 V

REG

XTAL

OSC

SEN

CONTROL

INTERFACE

Rev. 1.0 12/10

1.62–3.6 V

SCLK

SDIO

RST

Si4704/05-D50

DFS

14 LOUT

13 ROUT

12 GND

Si4704/05-D50

ABLE O F

ONTENTS

Section

Page

1. Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

2. Typical Application Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3. Bill of Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

4. Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

4.1. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

4.2. FM Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

4.3. Stereo Audio Processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

4.4. Received Signal Qualifiers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

4.5. De-emphasis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

4.6. Volume Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

4.7. Stereo DAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

4.8. Soft Mute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

4.9. FM Hi-Cut Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

4.10. Tuning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

4.11. Seek . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

4.12. Digital Audio Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

4.13. Embedded Antenna Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

4.14. RDS Decoder (Si4705 Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

4.15. Reference Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

4.16. Control Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

4.17. GPO Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

4.18. Reset, Powerup, and Powerdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

4.19. Programming with Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

5. Commands and Properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

6. Pin Descriptions: Si4704/05-GM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

7. Ordering Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

8. Package Markings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

8.1. Si4704 Top Mark . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

8.2. Si4705 Top Mark . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

8.3. Top Mark Explanation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

9. Package Outline: Si4704/05 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

10. PCB Land Pattern: Si4704/05 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

11. Additional Reference Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Document Change List: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

Contact Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

Rev. 1.0

SI4704-D50-GM Related Products

	SI4704-D50-GM	SI4704-D50-GMR
Description	Baseband Circuit, CMOS, QFN-20	Baseband Circuit, CMOS, 3 X 3 MM, ROHS COMPLIANT, QFN-20
Is it Rohs certified?	conform to	conform to
Parts packaging code	QFN	QFN
package instruction	QFN-20	3 X 3 MM, ROHS COMPLIANT, QFN-20
Contacts	20	20
Reach Compliance Code	compliant	compliant
JESD-30 code	S-XQCC-N20	S-XQCC-N20
length	3 mm	3 mm
Number of functions	1	1
Number of terminals	20	20
Package body material	UNSPECIFIED	UNSPECIFIED
encapsulated code	HVQCCN	HVQCCN
Package shape	SQUARE	SQUARE
Package form	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
Certification status	Not Qualified	Not Qualified
Maximum seat height	0.6 mm	0.6 mm
Nominal supply voltage	3.3 V	3.3 V
surface mount	YES	YES
technology	CMOS	CMOS
Telecom integrated circuit types	BASEBAND CIRCUIT	BASEBAND CIRCUIT
Terminal form	NO LEAD	NO LEAD
Terminal pitch	0.5 mm	0.5 mm
Terminal location	QUAD	QUAD
width	3 mm	3 mm
Base Number Matches	1	1

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