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| 型号： | 4421-DKDB2 |
| 厂商： | Silicon Laboratories Inc |
| 文件页数： | 1/45页 |
| 文件大小： | 0K |
| 描述： | KIT DEV TEST EZRADIO SI4421 TRX |
| 标准包装： | 1 |
| 附件类型： | 测试卡，收发器，434MHz |
| 适用于相关产品： | EZRadio? |
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Si4421 Universal ISM Band
FSK Transceiver
DESCRIPTION
Silicon Labs’ Si4421 is a single chip, low power, multi-channel FSK
transceiver designed for use in applications requiring FCC or ETSI
conformance for unlicensed use in the 433, 868 and 915 MHz bands.
The Si4421 transceiver is a part of Silicon Labs’ EZRadio TM product
line, which produces a flexible, low cost, and highly integrated solution
that does not require production alignments. The chip is a complete
analog RF and baseband transceiver including a multi-band PLL
synthesizer with PA, LNA, I/Q down converter mixers, baseband filters
and amplifiers, and an I/Q demodulator. All required RF functions are
integrated. Only an external crystal and bypass filtering are needed for
operation.
The Si4421 features a completely integrated PLL for easy RF design,
Si4421
PIN ASSIGNMENT
This document refers to Si4421-IC rev A1.
See www.silabs.com/integration for any applicable errata.
See back page for ordering information.
FEATURES
and its rapid settling time allows for fast frequency-hopping, bypassing
multipath fading and interference to achieve robust wireless links. The
PLL’s high resolution allows the usage of multiple channels in any of
the bands. The receiver baseband bandwidth (BW) is programmable to
accommodate various deviation, data rate and crystal tolerance
requirements. The transceiver employs the Zero-IF approach with I/Q
demodulation. Consequently, no external components (except crystal
and decoupling) are needed in most applications.
The Si4421 dramatically reduces the load on the microcontroller with
the integrated digital data processing features: data filtering, clock
recovery, data pattern recognition, integrated FIFO and TX data
register. The automatic frequency control (AFC) feature allows the use
of a low accuracy (low cost) crystal. To minimize the system cost, the
Si4421 can provide a clock signal for the microcontroller, avoiding the
need for two crystals.
For low power applications, the Si4421 supports low duty cycle
operation based on the internal wake-up timer.
FUNCTIONAL BLOCK DIAGRAM
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Fully integrated (low BOM, easy design-in)
No alignment required in production
Fast-settling, programmable, high-resolution PLL synthesizer
Fast frequency-hopping capability
High bit rate (up to 115.2 kbps in digital mode and 256 kbps
in analog mode)
Direct differential antenna input/output
Integrated power amplifier
Programmable TX frequency deviation (15 to 240 kHz)
Programmable RX baseband bandwidth (67 to 400 kHz)
Analog and digital RSSI outputs
Automatic frequency control (AFC)
Data quality detection (DQD)
Internal data filtering and clock recovery
RX synchron pattern recognition
SPI compatible serial control interface
Clock and reset signals for microcontroller
16-bit RX Data FIFO
Two 8-bit TX data registers
Low power duty cycle mode
Standard 10 MHz crystal reference with on-chip tuning
Wake-up timer
RF1 13
RF2 12
LNA
MIX
MIX
I
Q
AMP
AMP
OC
Self cal.
OC
I/Q
DEMOD
Data Filt
CLK Rec
clk
data
7
6
DCLK /
CFIL /
FFIT /
FSK /
DATA /
nFFS
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2.2 to 3.8 V supply voltage
Low power consumption
Low standby current (0.3 ? A)
Compact 16 pin TSSOP package
PA
FIFO
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Supports very short packets (down to 3 bytes)
RF Parts
PLL & I/Q VCO
with cal.
BB Amp/Filt./Limiter
RSSI
COMP
DQD
AFC
Data processing units
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Excellent temperature stability of the RF parameters
Good adjacent channel rejection/blocking
CLK div
Xosc
WTM
with cal.
LBD
Low Power parts
Controller
Bias
TYPICAL APPLICATIONS
? Home security and alarm
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Remote control, keyless entry
8
CLK
9
XTL /
15
ARSSI
1
SDI
2
SCK
3 4
nSEL SDO
5
nIRQ
10
nRES
16
nINT /
11
VSS
14
VDD
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Wireless keyboard/mouse and other PC peripherals
REF
VDI
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Toy controls
Remote keyless entry
Tire pressure monitoring
Telemetry
Personal/patient data logging
Remote automatic meter reading
1
Si4421-DS rev 2.4r 0708
www.silabs.com
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| 4021-DKDB13 | KIT DEV TEST EZRADIO SI4021 TX |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 4421-DKDB5 | 功能描述:射频开发工具 Test Board BIFA TRx (868MHz) RoHS:否 制造商:Taiyo Yuden 产品:Wireless Modules 类型:Wireless Audio 工具用于评估:WYSAAVDX7 频率: 工作电源电压:3.4 V to 5.5 V |
| 4421-DQ0025 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Heavy Duty Incremental Rotary Shaft Encoder |
| 4421-DQ4096 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Heavy Duty Incremental Rotary Shaft Encoder |
| 4421-DS0025 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Heavy Duty Incremental Rotary Shaft Encoder |
| 4421-DS4096 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Heavy Duty Incremental Rotary Shaft Encoder |
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