SI4737-C40-GU Silicon Laboratories Inc, SI4737-C40-GU Datasheet

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... Programmable reference clock  Volume control  Adjustable soft mute control  RDS/RBDS processor (Si4737/39)  Optional digital audio out (Si4737/39)  2-wire and 3-wire control interface  Integrated LDO regulator  2.0 to 5.5 V supply voltage (SSOP)  2.7 to 5.5 V supply voltage (QFN)  ...

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Si4736/37/38/39-C40 2 Rev. 1.0 ...

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... Bill of Materials (QFN/SSOP Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 5.1. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 5.2. Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 5.3. FM Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21 5.4. AM Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21 5.5. Weather Band Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 5.6. Digital Audio Interface (Si4737/39 Only 5.7. Stereo Audio Processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 5.8. De-emphasis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 5.9. Stereo DAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23 5.10. Soft Mute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 5.11. RDS/RBDS Processor (Si4737/39 Only 5.12. Tuning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 5 ...

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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 ...

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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 ...

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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 ...

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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 ...

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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 ...

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Table 6. 3-Wire Control Interface Characteristics (V = 2 1. Parameter SCLK Frequency SCLK High Time SCLK Low Time SDIO Input, SEN to SCLKSetup SDIO Input to SCLKHold  ...

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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 SCLKSetup SDIO Input to SCLKHold ...

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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 ...

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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 ...

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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 ...

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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 ...

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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: ...

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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 ...

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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. ...

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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 ...

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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, ...

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... INTERFACE Figure 9. Functional Block Diagram offers both the manufacturer and the end-user extensive programmability and flexibility in listening experience. The Si4737/39 incorporates a digital processor for the 2 of European Radio Data System (RDS) and the North American Radio Broadcast Data System (RBDS), and ...

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... Digital Audio Interface (Si4737/39 Only) The digital audio interface operates in slave mode and supports three different audio data formats: perform ...

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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 ...

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... The Si4737/39 device is user configurable and provides an optional interrupt when RDS is synchronized, loses synchronization, and/or the user configurable RDS FIFO threshold has been met. The Si4737/39 reports RDS decoder synchronization status and detailed bit errors in the information word for each RDS block with the FM_RDS_STATUS command ...

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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 ...

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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 ...

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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 ...

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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 ...

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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 ...

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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 ...

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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 ...

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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 ...

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... Part Number* Si4736-C40-GM AM/FM/WB Broadcast Radio Receiver Si4736-C40-GU AM/FM/WB Broadcast Radio Receiver Si4737-C40-GM AM/FM/WB Broadcast Radio Receiver with RDS/RBDS Si4737-C40-GU 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 ° ...

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... 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 ...

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... 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 YYWWTTTTTT 4736 = Si4736; 4737 = Si4737 Revision C die Firmware Revision 4.0. Assigned by the Assembly House. Rev. 1.0 ...

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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 ...

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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 ...

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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 ...

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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 ...

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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 ...

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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 ...

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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. ...

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