SI4736-B20-GM Silicon Laboratories Inc, SI4736-B20-GM Datasheet
SI4736-B20-GM
Specifications of SI4736-B20-GM
Related parts for SI4736-B20-GM
SI4736-B20-GM Summary of contents
Page 1
... 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 ...
Page 2
Si473x-B20 2 Rev. 0.5 ...
Page 3
T C ABLE O F ONTENTS Section 1. Product Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
Page 4
Si473x-B20 1. Product Overview The Si473x receivers are the industry's first fully-integrated multiband radio receiver ICs from antenna input to audio output. They require minimal external components with no factory alignment. The Si473x receivers reduce the receiver footprint by >90% ...
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 Current AM Mode (Si4730/31/34/35/36/37 only) Supply Current Supplies and Interface Interface Supply Current V Powerdown Current DD V Powerdown Current IO 3 High Level Input Voltage ...
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
... 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 Si4738-B20-GM FM/WB Broadcast Radio Receiver Si4739-B20-GM FM/WB Broadcast Radio Receiver with RDS/RBDS *Note: Add an “ ...
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. ...