Si4711-A20-GM Silicon Laboratories Inc, Si4711-A20-GM Datasheet

RF Transmitter Broadcast FM Radio Trns w/RDS/RBDS

Si4711-A20-GM

Manufacturer Part Number
Si4711-A20-GM
Description
RF Transmitter Broadcast FM Radio Trns w/RDS/RBDS
Manufacturer
Silicon Laboratories Inc
Datasheet

Specifications of Si4711-A20-GM

Lead Free Status / RoHS Status
Lead free / RoHS Compliant
F M R
Features
Applications
Description
The Si4710/11 integrates the complete transmit functions for standards-
compliant unlicensed FM broadcast stereo transmission. Users must
comply with local regulations on radio frequency (RF) transmission.
Functional Block Diagram
Rev. 1.1 1/08
2.7–5.5 V
Worldwide FM band support
(76–108 MHz)
Requires only two external
components
Frequency synthesizer with
integrated VCO
Digital stereo modulator
Programmable pre-emphasis
Analog/digital audio interface
Audio silence detector
Programmable reference clock
Cellular handsets/hands-free
MP3 players
Portable media players
This information applies to a product under development. Its characteristics and specifications are subject to change without notice.
22 nF
C1
GND
A D I O
DFS
VDD
DIN
RIN
LIN
Silicon Laboratories Confidential. Information contained herein is covered under non-disclosure agreement (NDA).
LDO
T
RDS ( S i4711 )
ADC
ADC
R A N S M I T T E R
GPO
DIGITAL
AUDIO
DSP
INTERFACE
CONTROL
Copyright © 2008 by Silicon Laboratories
DAC
DAC
Wireless speakers/microphone
Satellite digital audio radios
Personal computers/notebooks
RDS/RBDS encoder (Si4711 only)
PCB loop and stub antenna
support with self-calibrated
capacitor tuning
Programmable transmit level
Audio dynamic range control
Advanced modulation control
2.7 to 5.5 V supply voltage
Integrated LDO regulator
3 x 3 x 0.55 mm 20-pin QFN

Designed for compatibility with
cellular operation
Pb-free and RoHS Compliant
Si471x
AFC
TXO
RFGND
S i 4 7 1 0 / 11 - A 2 0
120 nH
L1
Tx
Ant
Patents pending
Note: To ensure proper operation and
RFGND
TXO
RST
NC
NC
performance, follow the guide-
lines in “AN383: Si47xx 3 mm x
3 mm QFN Universal Layout
Guide.” Silicon Laboratories will
evaluate schematics and layouts
for qualified customers.
Ordering Information:
2
3
4
5
Pin Assignments
1
6
See page 32.
20
7
(Top View)
Si4710/11
19
8
GND
PAD
18
9
17
10
16
11
15 RIN
14
13
12
Si4710/11
DFS
DIN
GND
VDD

Related parts for Si4711-A20-GM

Si4711-A20-GM Summary of contents

Page 1

... This information applies to a product under development. Its characteristics and specifications are subject to change without notice. Silicon Laboratories Confidential. Information contained herein is covered under non-disclosure agreement (NDA  RDS/RBDS encoder (Si4711 only)  PCB loop and stub antenna support with self-calibrated capacitor tuning  ...

Page 2

Si4710/11-A20 2 Rev. 1.1 ...

Page 3

... Digital Audio Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 5.4. Line Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 5.5. Stereo Audio Processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 5.6. Audio Dynamic Range Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 5.7. Audio Limiter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 5.8. Pre-emphasis and De-emphasis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 5.9. RDS/RBDS Processor (Si4711 Only 5.10. Tuning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 5.11. Reference Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 5.12. Control Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 5.13. GPO Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 5.14. Reset, Powerup, and Powerdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 5 ...

Page 4

Si4710/11-A20 1. Electrical Specifications Table 1. Recommended Operating Conditions Parameter Supply Voltage Interface Supply Voltage Ambient Temperature Note: All minimum and maximum specifications are guaranteed and apply across the recommended operating conditions. = 3.3 V and 25 C unless otherwise ...

Page 5

Table 3. DC Characteristics = 115 dBµV, stereo, f = 68.25 kHz, fpilot = 6.75 kHz, REFCLK = 32.768 kHz, unless otherwise specified. Test conditions Production test conditions Characterization test conditions: V ...

Page 6

Si4710/11-A20 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

Si4710/11-A20 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 SCLKSetup SDIO Input to SCLKHold  ...

Page 10

Si4710/11-A20 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 ...

Page 11

Table 8. Digital Audio Interface Characteristics (V = 2 1 Parameter DCLK pulse width high DCLK pulse width low DFS set-up time to DCLK rising edge DFS hold time ...

Page 12

Si4710/11-A20 Table 9. FM Transmitter Characteristics = 115 dBµV, stereo, f = 68.25 kHz, fpilot = 6.75 kHz, REFCLK = 32.768 kHz, 75 µs pre-emphasis, (Test conditions unless otherwise specified. Production test conditions ...

Page 13

Table 9. FM Transmitter Characteristics = 115 dBµV, stereo, f = 68.25 kHz, fpilot = 6.75 kHz, REFCLK = 32.768 kHz, 75 µs pre-emphasis, (Test conditions unless otherwise specified. Production test conditions ...

Page 14

Si4710/11-A20 2. Test Circuit 2.1. Test Circuit Schematic TX Antenna 120 nH V TXOUT 50  R1 RST SEN SCLK SDIO RCLK V IO 1.5 to 3.6 V Notes: 1. Si4710/11 is shown configured in I ...

Page 15

Typical Application Schematics 3.1. Analog Audio Inputs TX Antenna L1 120 nH RST SEN SCLK SDIO RCLK V IO 1.5 to 3.6 V Notes: 1. Si4710/11 is shown configured GPO2/INT can be configured for interrupts with ...

Page 16

Si4710/11-A20 3.2. Digital Audio Inputs TX Antenna L1 120 nH RST SEN SCLK SDIO RCLK V IO 1.5 to 3.6 V Notes: 1. Si4710/11 is shown configured GPO2/INT can be configured for interrupts with the powerup command. ...

Page 17

Universal AM/FM RX/FM TX Application Schematic Figure 12 shows an application schematic that supports the Si47xx family QFN products, including the Si4702/3/4/5 FM receivers, Si471x FM transmitters, Si472x FM transceivers, and Si473x AM/FM ...

Page 18

Si4710/11-A20 4.1. Universal AM/FM RX/FM TX Bill of Materials The bill of materials for the expanded application schematic shown in Figure 12 is provided in Table 13. Refer to the individual device layout guides and antenna interface guides for a ...

Page 19

... US Radio Broadcast Data System (RBDS) including all the symbol encoding, block synchronization, and error correction functions. Using this feature, the Si4711 enables data, such as artist name and song title transmitted to an RDS/RBDS receiver. The transmit output (TXO) connects directly to the transmit antenna with only one external inductor to provide harmonic filtering ...

Page 20

Si4710/11-A20 supports a number of industry-standard sampling rates including 32, 40, 44.1, and 48 kHz. The digital audio interface enables low-power operation by eliminating the need for redundant DACs and ADCs on the audio baseband processor. The Si4710/11 includes a ...

Page 21

Audio Sample Rates The device supports a number of industry-standard sampling rates including 32, 40, 44.1, and 48 kHz. The digital audio interface enables low-power operation by eliminating the need for redundant DACs and ADCs on the audio baseband ...

Page 22

Si4710/11-A20 5.4. Line Input The Si4710/11 provides left and right channel line inputs (LIN and RIN). The inputs are high-impedance and low- capacitance, suited to receiving line level signals from external audio baseband processors. Both line inputs are low-noise inputs ...

Page 23

Mono Audio Stereo Left + Right Stereo Audio Pilot 10% Left - Right Frequency (kHz) Figure 17. MPX Signal Spectrum 5.5.1. Stereo Encoder Figure 17 shows an example breakdown for the various components ...

Page 24

Si4710/11-A20 Threshold/(Gain + Threshold). Figure 19 shows example transfer function of an audio dynamic range controller with the threshold set at –40 dBFS and a Gain = 20 dB relative to an uncompressed transfer function. Input [dBFS] –90 –80 –70 ...

Page 25

... BCD buffer, which emulates a FIFO. The data does not repeat, but, when the buffer is nearly empty, the Si4711 signals the outside device to initiate another data burst. This mode permits the outside device to use any RDS functionality (including open data applications) that it wants ...

Page 26

Si4710/11-A20 mode). When SEN = 0, the seven-bit device address is 0010001. When SEN = 1, the address is 1100011. For write operations, the user then sends an eight bit data byte on SDIO, which is captured by the device ...

Page 27

SDIO, changing the state of SDIO on each rising edge of SCLK. A transaction ends when the user sets SEN high, then pulses SCLK high and low one final time. SCLK may either stop or continue to toggle while ...

Page 28

... Queries the status of a previously sent TX Tune Freq, TX Tune Power Tune Measure command. Queries the TX status and input audio signal metrics. Si4711/13 Only . Queries the status of the RDS Group Buffer and loads new data into buffer. Si4711/13 Only . Set up default PS strings. ...

Page 29

... Si4711/13 Only. Configure RDS interrupt sources. Default is none selected. Si4711/13 Only. Sets transmit RDS program identifier. Si4711/13 Only. Configures mix of RDS PS Group with RDS Group Buffer. Si4711/13 Only. Miscellaneous bits to transmit along with RDS_PS Groups. Si4711/13 Only. Number of times to repeat transmission message before transmitting the next PS mes- sage ...

Page 30

... Si4710/11-A20 Table 17. Si471x Property Summary (Continued) Prop Name 0x2C05 TX_RDS_PS_MESSAGE_COUNT Si4711/13 Only. Number of PS messages in use. 0x2C06 TX_RDS_PS_AF 0x2C07 TX_RDS_FIFO_SIZE 30 Description Si4711/13 Only. RDS Program Service Alternate Fre- quency. This provides the ability to inform the receiver of a single alternate frequency using AF Method A coding and is transmitted along with the RDS_PS Groups ...

Page 31

Pin Descriptions: Si4710/11-GM RFGND Pin Number(s) Name RFGND 4 TXO 5 RST 6 SEN 7 SCLK 8 SDIO 9 RCLK DIN 14 DFS 15 RIN 16 LIN ...

Page 32

... Si4710/11-A20 8. Ordering Guide Part Number* Si4710-A20-GM Portable broadcast FM transmitter Si4711-A20-GM Portable broadcast FM transmitter with RDS/RBDS encoder *Note: Add an “(R)” at the end of the device part number to denote tape and reel option; 2500 quantity per reel. 32 Description Rev. 1.1 Package Operating Type ...

Page 33

Package Outline: Si4710/11-GM Figure 21 illustrates the package details for the Si4710/11. Table 18 lists the values for the dimensions shown in the illustration. Figure 21. 20-Pin Quad Flat No-Lead (QFN) Symbol Millimeters Min Nom A 0.50 0.55 A1 ...

Page 34

Si4710/11-A20 10. PCB Land Pattern: Si4710/11-GM Figure 22 illustrates the PCB land pattern details for the Si4710/11-GM. Table 19 lists the values for the dimensions shown in the illustration. 34 Figure 22. PCB Land Pattern Rev. 1.1 ...

Page 35

Table 19. 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 36

Si4710/11-A20 11. Additional Reference Resources  Si471x-EVB Rev 0.5 User’s Guide  AN231: Si4700/01 Headphone and Antenna Interface  AN234: Si4700/01 FM Tuner Evaluation Board Test Procedure  AN284: Si4700/01 Firmware 15 Seek Adjustability and Settings  AN305: Si471x FM ...

Page 37

OCUMENT HANGE IST Revision 0.3 to Revision 0.4  Updated features list to include audio silence detector  Updated Table 3, “DC Characteristics,” on page 5.  Added note to Table 4, “Reset Timing 1,2,3 Characteristics ,” ...

Page 38

... 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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