SI4737-B20-GMR datasheet, PDF - EEWORLD Datasheet

Datasheet> All Categories > Wireless rf/communication> Telecom circuit> SI4737-B20-GMR

SI4737-B20-GMR: DescriptionIC RX AM/FM/WB RDS/RBDS 20UQFN; CategoryWireless rf/communication Telecom circuit; File Size615KB，38 Pages; ManufacturerSilicon Laboratories Inc; Environmental Compliance

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SI4737-B20-GMR Overview

IC RX AM/FM/WB RDS/RBDS 20UQFN

SI4737-B20-GMR Parametric

Parameter Name	Attribute value
Is it Rohs certified?	conform to
Maker	Silicon Laboratories Inc
Parts packaging code	QFN
package instruction	HVQCCN,
Contacts	20
Reach Compliance Code	unknown
JESD-30 code	S-XQCC-N20
length	3 mm
Number of functions	1
Number of terminals	20
Maximum operating temperature	85 °C
Minimum operating temperature	-20 °C
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
surface mount	YES
Telecom integrated circuit types	TELECOM CIRCUIT
Temperature level	OTHER
Terminal form	NO LEAD
Terminal pitch	0.5 mm
Terminal location	QUAD
Maximum time at peak reflow temperature	NOT SPECIFIED
width	3 mm

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Si4736/37/38/39-B20

ROADCAST

EATHER

Features



NOAA weather band support (162.4–



No manual alignment necessary

BAND

ADIO

ECEIVER



15 DOUT

14 LOUT

13 ROUT

12 GND

11 VDD

FMI 2

RFGND 3

AMI 4

Description

GND

PAD

RST 5

Functional Block Diagram

Si473x

DIGITAL

AUDIO

(Si4737/

39)

AMI

Patents pending

ANT

RFGND

LNA

RDS

(Si4737/

39)

LOW-IF

DOUT

DFS

AGC

GPO/DCLK

FM/

ANT

ADC

DAC

ROUT

FMI

LNA

AGC

ADC

DSP

DAC

LOUT

2.7– 5.5 V

VDD

GND

LDO

AFC

CONTROL

INTERFACE

VIO

1.5–3.6 V

Notes:

To ensure proper operation and

receiver performance, follow the

guidelines in “AN383: Universal

Antenna Selection and Layout

Guidelines.” Silicon Laboratories will

evaluate schematics and layouts for

qualified customers.

Place Si4736/37/38/39 as close as

possible to antenna jack and keep

the FMI and AMI traces as short as

possible.

SCLK

SDIO

SEN

Rev. 1.0 4/08

RCLK

RST

Si4736/37/38/39-B20

RCLK

SCLK

SEN

SDIO

VIO

The Si4736/37/38/39 is the first digital CMOS AM/FM/WB radio receiver IC that

integrates the complete tuner function from antenna input to audio output.

DFS



Emergency radios

Table and portable radios

Stereos

Mini/micro systems

Portable media players



Boom boxes

Cellular handsets

Modules

Clock radios

Mini HiFi

GPO2/INT

Applications

Pl Re

ea c

se om

us me

e nd

Si e

47 d

36 for

/3 N

7/ ew

38 D

/3 e

9- sig

C n

40 s



Programmable soft mute control



Programmable de-emphasis



RDS/RBDS processor (Si4737/39



162.55 MHz)

Worldwide FM band support

(76–108 MHz)

Worldwide AM band support

(520–1710 kHz) (Si4736/37 only)

1050 Hz alert tone detection

Excellent real-world performance

Freq synthesizer with integrated VCO

Advanced AM/FM seek tuning

Automatic frequency control (AFC)

Automatic gain control (AGC)

Integrated LDO regulator

Digital FM stereo decoder

Adaptive noise suppression

AM/FM/WB digital tuning



Programmable reference clock



Volume control

only)

Optional digital audio output (Si47/39

only)

Optional digital audio output

(Si4737/39 only)

2-wire and 3-wire control interface

2.7 to 5.5 V supply voltage

Firmware upgradeable

3 x 3 x 0.55 mm 20-pin QFN package



Pb-free/RoHS compliant

Ordering Information:

See page 30.

Pin Assignments

Si4736/37/38/39-GM

(Top View)

GPO3/DCLK

GPO1

Si4736/37/38/39-B20

ABLE

Section

ONTENTS

Page

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

2. Typical Application Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

3. Bill of Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

4. Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

4.1. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

4.2. Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

4.3. FM Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

4.4. AM Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

4.5. SW Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

4.6. LW Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

4.7. Digital Audio Interface (Si4735 Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

4.8. Stereo Audio Processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

4.9. De-emphasis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

4.10. Stereo DAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

4.11. Soft Mute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

4.12. RDS/RBDS Processor (Si4735 Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

4.13. Tuning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

4.14. Seek . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

4.15. Reference Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

4.16. Control Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

4.17. GPO Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

4.18. Firmware Upgrades . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

4.19. Reset, Power Up, and Power Down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

4.20. Programming with Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

5. Commands and Properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

6. Pin Descriptions: Si4734/35-GM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

7. Ordering Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

8. Package Markings (Top Marks) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

8.1. Si4734/35 Top Mark . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

8.2. Top Mark Explanation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

9. Package Outline: Si4734/35 QFN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

10. PCB Land Pattern: Si4734/35 QFN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

11. Additional Reference Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Document Change List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

Contact Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38

Rev. 1.0

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