Si4312-B10-GM Silicon Labs

Si4312 315/433.92 MHZ OOK RECEIVER Features Single chip receiver with only six Data rates up to 10 kbps NRZ external components (5 kbps Manchester) Selectable 315/433.92 MHz carrier Direct battery operation with on- frequency chip low drop out (LDO) voltage regulator Supports OOK modulation 16 MHz crystal oscillator support High sensitivity (110dBm 1.0kbps) 3x3x0.85 mm 20L QFN package (RoHS compliant) Frequency scanning Ordering Information: 40 to +85 C temperature range Excellent interference rejection See page 15. Applications Satellite set-top box receivers Remote keyless entry Pin Assignments Remote controls, IR After market alarms replacement/extension Telemetry Si4312 Garage and gate door openers Wireless point of sale (Top View) Home automation and security Toys Description 20 19 18 17 VDD 1 16 The Si4312 is a fully-integrated OOK CMOS RF receiver that operates in the RFGND 2 15 BT0 unlicensed 315 and 433.92 MHz ultra high frequency (UHF) bands. It is designed for high-volume, cost-sensitive RF receiver applications, such as set-top box RF RX IN 3 14 BT1 GND receivers, remote controls, garage door openers, home automation, security, PAD RST 4 13 DOUT remote keyless entry systems, wireless POS, and telemetry. The Si4312 offers RATIO 5 12 GND industry-leading RF performance, high integration, flexibility, low BOM, small board area, and ease of design. No production alignment is necessary as all RF 6 11 VDD 7 8 9 10 functions are integrated into the device. Functional Block Diagram Patents pending Si4312 Antenna DOUT ADC RX IN PGA DSP LNA RATIO MCU ADC BASEBAND 315/434 AGC PROCESSOR TH 1:0 SQUELCH BT 1:0 VDD 2.7 3.6 V FREQ XTAL LDO GND RST SCAN OSC 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. 315/434 NC GND VDD NC XTL1 NC TH0 XTL2 TH1Si4312 2 Rev. 0.5