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參數(shù)資料
| 型號： | SI4713-B30-GMR |
| 廠商： | Silicon Laboratories Inc |
| 文件頁數(shù)： | 20/42頁 |
| 文件大?。?/td> | 430K |
| 描述： | IC TX FM RADIO RPS/RDS 20UQFN |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 頻率： | 76MHz ~ 108MHz |
| 應(yīng)用： | 通用 |
| 調(diào)制或協(xié)議： | FM |
| 電流 - 傳輸： | 18.8mA |
| 數(shù)據(jù)接口： | PCB，表面貼裝 |
| 天線連接器： | PCB，表面貼裝 |
| 電源電壓： | 2.7 V ~ 5.5 V |
| 封裝/外殼： | 20-UFQFN 裸露焊盤 |
| 包裝： | 帶卷 (TR) |
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Si4712/13-B30
20
Rev. 1.1
5. Functional Description
5.1. Overview
Figure 13. Functional Block Diagram
The Si4712/13 is the first 100% CMOS FM radio
transmitter with integrated receive functionality to
measure received signal strength. The device leverages
Silicon Labs highly successful and proven Si4700/01
FM receiver patent family and offers unmatched
integration and performance, allowing FM transmit to be
added to any portable device with a single chip. The
Si4712/13 offers industry-leading size, performance,
low power consumption, flexibility, and ease of use.
The Si4712/13s digital integration reduces the required
external components of traditional offerings, resulting in
a solution requiring only an external inductor and
bypass capacitor, and PCB space of approximately
15 mm
2
. This increases the device reliability and
simplifies the design and manufacturing for companies
adopting this technology.
The Si4712/13s integrated receive power scan function
shares the same antenna as the transmitter allowing for
a compact printed circuit board design. The device
operates in half duplex mode, meaning the transmitter
and receiver do not operate at the same time.
The Si4712/13 performs FM modulation in the digital
domain to achieve high fidelity, optimal performance
versus power consumption, and flexibility of design. The
onboard DSP provides modulation adjustment and
audio dynamic range control for optimum sound quality.
The Si4713 supports the European Radio Data System
(RDS) and the US Radio Broadcast Data System
(RBDS) including all the symbol encoding, block
synchronization, and error correction functions. Using
this feature, the Si4713 enables data such as artist
name and song title to be 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. The output is programmable
over a 10 dB voltage range in 1 dB steps. The TXO
output pin can also be configured for loop antenna
support. Users are responsible for complying with local
regulations on RF transmission (FCC, ETSI, ARIB,
etc.).
The digital audio interface operates in slave mode and
supports a variety of MSB-first audio data formats
including I
2
S and left-justified modes. The interface has
three pins: digital data input (DIN), digital frame
synchronization input (DFS), and a digital bit
synchronization input clock (DCLK). The Si4712/13
supports a number of industry-standard sampling rates
ADC
ADC
Si4712/13
DSP
DAC
DAC
CONTROL
INTERFACE
GPO
RDS (Si4713)
LDO
VDD
GND
LIN
RIN
Tx
Ant
TXO
DFS
DIN
AFC
L1
120 nH
RFGND
DIGITAL
AUDIO
PEAK
DETECT
2.75.5 V
C1
22 nF
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