SI4739-C40-GM Silicon Laboratories Inc, SI4739-C40-GM Datasheet
SI4739-C40-GM
Specifications of SI4739-C40-GM
Related parts for SI4739-C40-GM
SI4739-C40-GM Summary of contents
Page 1
B AM/FM R ROADCAST Features NOAA weather band support (162.4–162.55 MHz) Worldwide FM band support (64–108 MHz) Worldwide AM band support (520–1710 kHz) (Si4736/37) 1050 Hz alert tone detection Excellent real-world performance Freq synthesizer ...
Page 2
Si4736/37/38/39-C40 2 Rev. 1.0 ...
Page 3
T C ABLE O F ONTENTS Section 1. Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
Page 4
Si4736/37/38/39-C40 1. Electrical Specifications Table 1. Recommended Operating Conditions Parameter 2 Supply Voltage Interface Supply Voltage Power Supply Powerup Rise Time Interface Power Supply Powerup Rise Time Ambient Temperature Note: 1. All minimum and maximum specifications apply across the recommended ...
Page 5
Table 3. DC Characteristics (V = 2 1. Parameter FM Mode 1 Supply Current 2 Supply Current 1 RDS Supply Current WB Mode 1 Supply Current Supply Current AM ...
Page 6
Si4736/37/38/39-C40 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 ...
Page 7
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 Input ...
Page 8
Si4736/37/38/39-C40 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 ...
Page 9
Table 6. 3-Wire Control Interface Characteristics (V = 2 1. Parameter SCLK Frequency SCLK High Time SCLK Low Time SDIO Input, SEN to SCLKSetup SDIO Input to SCLKHold ...
Page 10
Si4736/37/38/39-C40 Table 7. SPI Control Interface Characteristics (V = 2 1. Parameter SCLK Frequency SCLK High Time SCLK Low Time SDIO Input, SEN to SCLKSetup SDIO Input to SCLKHold ...
Page 11
Table 8. 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 Edge ...
Page 12
Si4736/37/38/39-C40 Table 9. 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 ...
Page 13
Table 9. FM Receiver Characteristics (V = 2 1. Parameter 3,4,5,6,12,13 Blocking Sensitivity 3,4,5,6,12,13 Intermode Sensitivity 6,10 Audio Output Load Resistance 6,10 Audio Output Load Capacitance 6 Seek/Tune Time ...
Page 14
Si4736/37/38/39-C40 Table 10. 64–75.9 MHz Input Frequency FM Receiver Characteristics (V = 2 1. Parameter Input Frequency Sensitivity with Headphone 3,4,5 Network 7 LNA Input Resistance 7 LNA Input ...
Page 15
Table 11. WB Receiver Characteristics (V = 2.7 to 5.5 V, VIO = 1.85 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 Notes: ...
Page 16
Si4736/37/38/39-C40 Table 12. AM Receiver Characteristics (V = 2 1. – ° 6,9 Antenna Inductance 6 Powerup Time Notes: 1. Additional testing information is available in ...
Page 17
Typical Application Schematic (QFN FMIP FMI 3 RFGND L1 4 AMI AM antenna 5 C5 Si4736/37 only RST RST SEN SCLK SDIO RCLK VIO 1.85 to 3.6 V Notes: 1. Place C1 close to V pin. ...
Page 18
Si4736/37/38/39-C40 3. Typical Application Schematic (SSOP) Optional: Digital Audio Output R3 DOUT R2 C4 DFS R1 GPO3/DCLK GPO2/INT GPO1 NC NC FMI RFGND antenna AMI Si4736/37 only C5 X1 GPIO3 C2 C3 Optional: for crystal oscillator ...
Page 19
Bill of Materials (QFN/SSOP) 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 Si4736/37/38/39 AM/FM Radio Tuner T1 Transformer, 1–5 turns ratio L2 Air loop antenna, ...
Page 20
Si4736/37/38/39-C40 5. Functional Description 5.1. Overview AM ANT RFGND FM/ WB ANT 2.7– 5.5 V (QFN) 2.0– 5.5 V (SSOP) VDD GND The Si4736/37 and Si4738/39 are the industry's first fully integrated, 100% CMOS AM/FM/WB and FM/WB radio receiver ICs. ...
Page 21
FM Receiver The Si4736/37/38/39 FM receiver is based on the proven Si4700/01 FM tuner. The receiver uses a digital low-IF architecture allowing the elimination of external components and factory adjustments. Si4736/37/38/39 integrates a low noise amplifier (LNA) supporting the ...
Page 22
Si4736/37/38/39-C40 INVERTED (OFALL = 1) DCLK (OFALL = 0) DCLK DFS (OMODE = 0000) 1 DCLK DOUT 1 2 MSB INVERTED (OFALL = 1) DCLK (OFALL = 0) DCLK DFS Left-Justified (OMODE = 0110) DOUT 1 2 ...
Page 23
Stereo Audio Processing The output of the FM demodulator is a stereo multiplexed (MPX) signal. The MPX standard was developed in 1961, and is used worldwide. Today's MPX signal format consists of left + right (L+R) audio, left – ...
Page 24
Si4736/37/38/39-C40 5.13. Seek Seek tuning will search up or down for a valid channel. Valid channels are found when the receive signal strength indicator (RSSI) and the signal-to-noise ratio (SNR) values exceed the set threshold. Using the SNR qualifier rather ...
Page 25
For read operations, after the Si4736/37/38/39 has acknowledged the control byte, it will drive an 8-bit data byte on SDIO, changing the state of SDIO on the falling edge of SCLK. The user acknowledges each data byte by driving SDIO ...
Page 26
Si4736/37/38/39-C40 5.17. Firmware Upgrades The Si4736/37/38/39 contains on-chip program RAM to accommodate minor changes to the firmware. This allows Silicon Labs to provide future firmware updates to optimize the characteristics of new radio designs and those already deployed in the ...
Page 27
Commands and Properties Table 15. Selected Si473x Commands Cmd Name 0x01 POWER_UP 0x10 GET_REV 0x11 POWER_DOWN 0x12 SET_PROPERTY 0x13 GET_PROPERTY 0x20 FM_TUNE_FREQ 0x21 FM_SEEK_START 0x23 FM_RSQ_STATUS 0x24 FM_RDS_STATUS 0x40 AM_TUNE_FREQ 0x41 AM_SEEK_START 0x43 AM_RSQ_STATUS 0x50 WB_TUNE_FREQ 0x53 WB_RSQ_STATUS Si4736/37/38/39-C40 ...
Page 28
Si4736/37/38/39-C40 Prop Name 0x1100 FM_DEEMPHASIS FM_BLEND_STEREO_ 0x1105 THRESHOLD FM_BLEND_MONO_ 0x1106 THRESHOLD FM_RSQ_INT_ 0x1200 SOURCE 0x1300 FM_SOFT_MUTE_RATE FM_SOFT_MUTE_ 0x1302 MAX_ATTENUATION FM_SOFT_MUTE_ 0x1303 SNR_THRESHOLD FM_SEEK_BAND_ 0x1400 BOTTOM 0x1401 FM_SEEK_BAND_TOP FM_SEEK_FREQ_ 0x1402 SPACING FM_SEEK_TUNE_ 0x1403 SNR_THRESHOLD FM_SEEK_TUNE_ 0x1404 RSSI_TRESHOLD 0x1500 RDS_INT_SOURCE 0x1501 RDS_INT_FIFO_COUNT ...
Page 29
Table 16. Selected Si473x Properties (Continued) Prop Name 0x3401 AM_SEEK_BAND_TOP AM_SEEK_FREQ_ 0x3402 SPACING AM_SEEK_SNR_ 0x3403 THRESHOLD AM_SEEK_RSSI_ 0x3404 THRESHOLD 0x4000 RX_VOLUME 0x4001 RX_HARD_MUTE 0x5108 WB_MAX_TUNE_ERROR WB_RSQ_INTERRUPT_ 0x5200 SOURCE WB_ASQ_INTERRUPT_ 0x5600 SOURCE Si4736/37/38/39-C40 Description Sets the top of the AM band ...
Page 30
Si4736/37/38/39-C40 7. Pin Descriptions: Si4736/37/38/39-GM RFGND Pin Number(s) Name connect. Leave floating. 2 FMI FM/WB RF inputs. FMI should be connected to the antenna trace. 3 RFGND RF ground. Connect to ground plane on PCB. 4 ...
Page 31
Pin Descriptions: Si4736/37-GU Pin Number(s) Name 1 DOUT Digital output data in digital output mode. 2 DFS Digital frame synchronization input in digital output mode. 3 GPO3/DCLK General purpose output, crystal oscillator, or digital bit synchronous clock input in ...
Page 32
... AM/FM/WB Broadcast Radio Receiver with RDS/RBDS Si4738-C40-GM FM/WB Broadcast Radio Receiver Si4739-C40-GM FM/WB Broadcast Radio Receiver with RDS/RBDS *Note: Add an “(R)” at the end of the device part number to denote tape and reel option; 2500 quantity per reel. SSOP devices operate down ° ...
Page 33
... Justified Year WW = Workweek Si4736/37/38/39-C40 3840 CTTT YWW YWW 36 = Si4736 Si4737 Si4738 Si4739 40 = Firmware Revision 4 Revision C Die Internal tracking code Pin 1 Identifier Assigned by the Assembly House. Corresponds to the last sig- nificant digit of the year and workweek of the mold date. Rev. 1.0 ...
Page 34
Si4736/37/38/39-C40 10.3. Si4736/37 Top Mark (SSOP) 10.4. Top Mark Explanation (SSOP) Mark Method: YAG Laser Part Number Line 1 Marking: Die Revision Firmware Revision YY = Year Line 2 Marking Work week TTTTTT = Manufacturing code 34 4736C40GU ...
Page 35
Package Outline: Si4736/37/38/39 QFN Figure 14 illustrates the package details for the Si4736/37/38/39. Table 17 lists the values for the dimensions shown in the illustration. Figure 14. 20-Pin Quad Flat No-Lead (QFN) Symbol Millimeters Min Nom A 0.50 0.55 ...
Page 36
Si4736/37/38/39-C40 12. PCB Land Pattern: Si4736/37/38/39 QFN Figure 15 illustrates the PCB land pattern details for the Si4736/37/38/39-C40-GM QFN. Table 18 lists the values for the dimensions shown in the illustration. 36 Figure 15. PCB Land Pattern Rev. 1.0 ...
Page 37
Table 18. 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 38
Si4736/37/38/39-C40 13. Package Outline: Si4736/37 SSOP Figure 16 illustrates the package details for the Si4736/37. Table 19 lists the values for the dimensions shown in the illustration. Dimension θ aaa ...
Page 39
PCB Land Pattern: Si4736/37 SSOP Figure 17 illustrates the PCB land pattern details for the Si4736/37-C40-GU SSOP. Table 20 lists the values for the dimensions shown in the illustration. Table 20. PCB Land Pattern Dimensions Dimension ...
Page 40
Si4736/37/38/39-C40 15. Additional Reference Resources Contact your local sales representatives for more information or to obtain copies of the following references: AN332: Si47xx Programming Guide AN383: Si47xx Antenna, Schematic, Layout, and Design Guidelines AN388: Si470x/1x/2x/3x/4x Evaluation Board ...
Page 41
OCUMENT HANGE IST Revision 0.71 to Revision 1.0 Updated patent information on page 1. Pin 22 changed from “GND” to “DBYP.” Updated Table 1 on page 4. Updated Table 3 on page 5. ...
Page 42
... 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. ...