SI4731-B20-GM Silicon Laboratories Inc, SI4731-B20-GM Datasheet

IC RX RADIO MULTI-BAND RDS 20QFN

SI4731-B20-GM

Manufacturer Part Number
SI4731-B20-GM
Description
IC RX RADIO MULTI-BAND RDS 20QFN
Manufacturer
Silicon Laboratories Inc
Datasheet

Specifications of SI4731-B20-GM

Package / Case
20-UQFN, 20-µQFN
Frequency
520kHz ~ 1.71MHz, 76MHz ~ 108MHz
Modulation Or Protocol
AM, FM
Applications
General Purpose
Current - Receiving
10mA
Data Interface
PCB, Surface Mount
Antenna Connector
PCB, Surface Mount
Features
RSSI Equipped
Voltage - Supply
2.7 V ~ 5.5 V
Operating Temperature
-20°C ~ 85°C
Bus Type
I2C
Maximum Frequency
108 MHz, 1710 MHz
Minimum Frequency
76 MHz, 520 MHz
Modulation Technique
AM, FM
Mounting Style
SMD/SMT
Function
Radio
Supply Voltage (min)
2.7 V
Supply Voltage (max)
5.5 V
Minimum Operating Temperature
- 20 C
Maximum Operating Temperature
+ 85 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Sensitivity
-
Memory Size
-
Data Rate - Maximum
-
Lead Free Status / Rohs Status
Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
SI4731-B20-GMR
Manufacturer:
SILICONLABS/芯科
Quantity:
20 000
B
Features
Applications
Si473x Product Selector Guide
Rev. 0.5 10/08
FM band support: 76–108 MHz
AM band support: 520–1710 kHz
SW band support: 2.3–21.85 MHz
(Si4734/35)
LW band support: 153–279 kHz
(Si4734/35)
Weather band support: 162.4–
162.55 MHz (Si4736/37/38/39)
1050 Hz alert tone detection
(Si4736/37/38/39)
Excellent real-world performance
Freq synthesizer with integrated VCO
Advanced seek tuning
Automatic frequency control (AFC)
Automatic gain control (AGC)
Integrated LDO regulator
Digital FM stereo decoder
Programmable de-emphasis
Table and portable radios
Audio video receivers
Stereos
Mini/micro systems
CD/DVD players
Portable media players
ROADCAST
Si4730
Si4731
Si4734
Si4735
Si4736
Si4737
Si4738
Si4739
Part
76 – 108 MHz
76 – 108 MHz
64 – 108 MHz
64 – 108 MHz
76 – 108 MHz
76 – 108 MHz
76 – 108 MHz
76 – 108 MHz
FM
M
ULTI
AM
Copyright © 2008 by Silicon Laboratories
-B
Adaptive noise suppression
AM/FM digital tuning
EN55020 compliant
No manual alignment necessary
Programmable reference clock
Volume control
Programmable soft mute control
RDS/RBDS processor
(Si4731/35/37/39)
Optional digital audio output
(Si4731/35/37/39)
2-wire control interface
2.7 to 5.5 V supply voltage
Firmware upgradeable
Wide range of ferrite loop sticks and
air loop antennas supported
3 x 3 x 0.55 mm 20-pin QFN package
Cellular handsets
Emergency radios
Clock radios
Modules
Mini HiFi
Boom boxes
Pb-free/RoHS compliant
AND
RDS
R
SW/LW
ADIO
WB
R
ECEIVER
Si473x-B20
Patents Pending
Notes:
RFGND
1. Place Si473x as close as
2. Contact your local sales
RST
AMI
FMI
NC
possible to antenna jack and
keep the FMI and AMI traces as
short as possible.
representatives for more
information or to obtain
application notes.
Ordering Information:
Pin Assignments
2
3
4
5
1
6
See page 18.
20
Si473x-GM
7
(Top View)
19
GND
8
PAD
18
9
17
10
Si473x-B20
16
11
15 DOUT
14
13
12
LOUT
ROUT
GND
VDD

Related parts for SI4731-B20-GM

SI4731-B20-GM Summary of contents

Page 1

... Volume control  Programmable soft mute control  RDS/RBDS processor (Si4731/35/37/39)  Optional digital audio output (Si4731/35/37/39)  2-wire control interface  2.7 to 5.5 V supply voltage  Firmware upgradeable  Wide range of ferrite loop sticks and air loop antennas supported  ...

Page 2

Si473x-B20 2 Rev. 0.5 ...

Page 3

T C ABLE O F ONTENTS Section 1. Product Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 4

... FM stereo processing. In addition, the Si473x ICs provide a programmable reference clock and an I2C-compatible 2-wire control interface. The Si4731/35/37/39 incorporates a digital processor for the European Radio Data System (RDS) and the North American Radio Broadcast Data System (RBDS), including all required symbol decoding, block synchronization, error detection, and error correction functions ...

Page 5

Table 2. Absolute Maximum Ratings Parameter Supply Voltage Interface Supply Voltage 3 Input Current 3 Input Voltage Operating Temperature Storage Temperature 4 RF Input Level Notes: 1. Permanent device damage may occur if the above Absolute Maximum Ratings are exceeded. ...

Page 6

Si473x-B20 Table 3. DC Characteristics (V = 2 1 Parameter FM Mode Supply Current 1 Supply Current 2 RDS Supply Current WB Mode (Si4736/37/38/39 only) Supply Current 1 Supply ...

Page 7

Table 4. Reset Timing Characteristics (V = 2 1 Parameter RST Pulse Width and GPO1, GPO2/INT Setup to RST GPO1, GPO2/INT Hold from RST Important Notes: 1. When selecting ...

Page 8

Si473x-B20 Table 5. 2-Wire Control Interface Characteristics (V = 2 1 Parameter SCLK Frequency SCLK Low Time SCLK High Time  SCLK Input to SDIO Setup (START)  SCLK ...

Page 9

SU:STA HD:STA LOW 70% SCLK 30% 70% SDIO 30% START t r:IN Figure 2. 2-Wire Control Interface Read and Write Timing Parameters SCLK A6-A0, SDIO R/W START ADDRESS + R/W Figure 3. 2-Wire Control Interface Read and ...

Page 10

Si473x-B20 Table 6. Digital Audio Interface Characteristics (V = 2 1 Parameter DCLK Cycle Time DCLK Pulse Width High DCLK Pulse Width Low DFS Set-up Time to DCLK Rising ...

Page 11

Table 7. FM Receiver Characteristics (V = 2 1 Parameter Input Frequency Sensitivity with Headphone 3,4,5 Network Sensitivity with 50  Network 3,4,5,6 6 RDS Sensitivity 6,7 LNA Input ...

Page 12

Si473x-B20 Table 7. FM Receiver Characteristics (V = 2 1 Parameter 6 Seek/Tune Time 6 Powerup Time 12 RSSI Offset Notes: 1. Additional testing information is available in “AN388: ...

Page 13

Table 8. AM/SW/LW Receiver Characteristics (V = 2 1 – ° Parameter Symbol Input Frequency 2,3,4,5, 6 Sensitivity 5,7 Large Signal Voltage Handling Power Supply Rejection ...

Page 14

Si473x-B20 Table 9. WB Receiver Characteristics (V = 2.7 to 5.5 V, VIO = 1.5 to 3.6V Parameter Input Frequency 2,3 Sensitivity Adjacent Channel Selectivity 2,3,4,5 Audio S/N 6 Audio Frequency Response Low 6 Audio Frequency Response High ...

Page 15

Typical AM/FM Application Schematic FMIP FMI 3 RFGND L1 4 AMI AM antenna 5 C5 RST RST SEN SCLK SDIO RCLK VIO 1.5 to 3.6 V Notes: 1. Place C1 close to V pin ...

Page 16

Si473x-B20 4. Bill of Materials Component(s) C1 Supply bypass capacitor, 22 nF, ±20%, Z5U/X7R C5 Coupling capacitor, 0.47 µF, ±20%, Z5U/X7R L1 Ferrite loop stick, 180 U1 Si473x AM/FM Radio Tuner T1 Transformer, 1–5 turns ratio L2 Air loop antenna, ...

Page 17

Pin Descriptions: Si473x-GM RFGND Pin Number(s) Name connect. Leave floating. 2 FMI FM/WB/SW RF inputs. FMI should be connected to the antenna trace. 3 RFGND RF ground. Connect to ground plane on PCB. 4 AMI ...

Page 18

... Si473x-B20 6. Ordering Guide Part Number* Si4730-B20-GM AM/FM Broadcast Radio Receiver Si4731-B20-GM AM/FM Broadcast Radio Receiver with RDS/RBDS Si4734-B20-GM AM/FM/SW/LW Broadcast Radio Receiver Si4735-B20-GM AM/FM/SW/LW Broadcast Radio Receiver with RDS/RBDS Si4736-B20-GM AM/FM/WB Broadcast Radio Receiver Si4737-B20-GM AM/FM/WB Broadcast Radio Receiver with RDS/RBDS ...

Page 19

Package Outline: Si473x QFN Figure 5 illustrates the package details for the Si473x. Table 11 lists the values for the dimensions shown in the illustration. Figure 5. 20-Pin Quad Flat No-Lead (QFN) Symbol Millimeters Min Nom A 0.50 0.55 ...

Page 20

Si473x-B20 8. PCB Land Pattern: Si473x QFN Figure 6 illustrates the PCB land pattern details for the Si473x family. Table 12 lists the values for the dimensions shown in the illustration. 20 Figure 6. PCB Land Pattern Rev. 0.5 ...

Page 21

Table 12. PCB Land Pattern Dimensions Symbol Millimeters Min Max D 2.71 REF D2 1.60 1.80 e 0.50 BSC E 2.71 REF E2 1.60 1.80 f 2.53 BSC GD 2.10 — Notes: General 1. All dimensions shown are in millimeters ...

Page 22

Si473x-B20 9. Additional Reference Resources Contact your local sales representatives for more information or to obtain copies of the following references:  EN55020 Compliance Test Certificate  AN332: Si47xx Programming Guide  AN383: Si47xx Antenna, Schematic, Layout, and Design Layout ...

Page 23

N : OTES Si473x-B20 Rev. 0.5 23 ...

Page 24

... Should Buyer purchase or use Silicon Laboratories products for any such unintended or unauthorized ap- plication, Buyer shall indemnify and hold Silicon Laboratories harmless against all claims and damages. Silicon Laboratories and Silicon Labs are trademarks of Silicon Laboratories Inc. Other products or brandnames mentioned herein are trademarks or registered trademarks of their respective holders. ...

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