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Si4312
315/433.92 MH Z O O K R ECEIVER
Features
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?
?
?
Single chip receiver with only six
external components
Selectable 315/433.92 MHz carrier
frequency
Supports OOK modulation
High sensitivity
(–110 dBm @ 1.0 kbps)
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?
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?
Data rates up to 10 kbps NRZ
(5 kbps Manchester)
Direct battery operation with on-
chip low drop out (LDO) voltage
regulator
16 MHz crystal oscillator support
3x3x0.85 mm 20L QFN package
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Frequency scanning
Excellent interference rejection
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(RoHS compliant)
–40 to +85 °C temperature range
Ordering Information:
Applications
See page 15.
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Satellite set-top box receivers
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Remote keyless entry
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Remote controls, IR
replacement/extension
Garage and gate door openers
Home automation and security
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After market alarms
Telemetry
Wireless point of sale
Toys
Pin Assignments
Si4312
(Top View)
Description
The Si4312 is a fully-integrated OOK CMOS RF receiver that operates in the
unlicensed 315 and 433.92 MHz ultra high frequency (UHF) bands. It is designed
VDD 1
RFGND 2
20
19
18
17
16
15 BT0
for high-volume, cost-sensitive RF receiver applications, such as set-top box RF
receivers, remote controls, garage door openers, home automation, security,
remote keyless entry systems, wireless POS, and telemetry. The Si4312 offers
industry-leading RF performance, high integration, flexibility, low BOM, small
RX_IN 3
RST 4
RATIO 5
GND
PAD
14 BT1
13 DOUT
12 GND
board area, and ease of design. No production alignment is necessary as all RF
functions are integrated into the device.
6
7
8
9
10
11 VDD
Functional Block Diagram
Patents pending
Antenna
Si4312
RX_IN
ADC
DOUT
LNA
PGA
ADC
DSP
MCU
BASEBAND
RATIO
315/434
2.7 – 3.6 V
VDD
GND
AGC
LDO
FREQ
SCAN
XTAL
OSC
PROCESSOR
SQUELCH
TH[1:0]
BT[1:0]
RST
16 MHz
Rev. 0.5 3/10
Copyright ? 2010 by Silicon Laboratories
Si4312
This information applies to a product under development. Its characteristics and specifications are subject to change without notice.
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相关PDF资料
43A-015A SENSOR PRES 15PSIA 0-100MV TO-8
450-0004 KIT DEV PROFLEX01-R2 F ANTENNA
450-0021 KIT DEV SIFLEX02 WIRE ANTENNA
450-0023 KIT DEV PROFLEX01 F ANTENNA
450-0025 MODFLEX MGE W/SIFLEX02
450-0027 MODFLEX MGU W/SIFLEX02
450-0037 MODULE TIWI-R2 U.FL
450-0085 COM6L-T5 ADAPTER CARD WITH U.FL
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