MICRF002/RF022 300-440MHz QwikRadio ASK Receiver General Description The MICRF002 is a single chip ASK/OOK (ON-OFF Keyed) RF receiver IC. This device is a true antenna-in to QwikRadio data-out monolithic device. All RF and IF tuning is accomplished automatically within the IC which eliminates Features manual tuning and reduces production costs. The result is 300MHz to 440MHz frequency range a highly reliable yet low cost solution. Data-rate up to 10kbps (fixed-mode) The MICRF002 is a fully featured part in 16-pin packaging, the MICRF022 is the same part packaged in 8-pin Low Power Consumption packaging with a reduced feature set (see Ordering 2.2mA fully operational (315MHz) Information for more information). 0.9A in shutdown The MICRF002 is an enhanced version of the MICRF001 220A in polled operation (10:1 duty-cycle) and MICRF011. The MICRF002 provides two additional Wake-up output flag to enable decoders and functions over the MICRF001/011, (1) a Shutdown pin, microprocessors which may be used to turn the device off for duty-cycled operation, and (2) a Wake-up output, which provides an Very low RF re-radiation at the antenna output flag indicating when an RF signal is present. These Highly integrated with extremely low external part count features make the MICRF002 ideal for low and ultra-low power applications, such as RKE and remote controls. Applications All IF filtering and post-detection (demodulator) data filtering is provided within the MICRF002, so no external Automotive remote keyless entry (RKE) filters are necessary. One of four demodulator filter Remote controls bandwidths may be selected externally by the user. Remote fan and light control The MICRF002 offer two modes of operation fixed-mode Garage door and gate openers (FIX) and sweep-mode (SWP). In fixed-mode the MICRF002 functions as a conventional superhet receiver. In sweep-mode the MICRF002 employs a patented sweeping function to sweep a wider RF spectrum. Fixed- mode provides better selectivity and sensitivity performance and sweep-mode enables the MICRF002 to be used with low cost, imprecise transmitters. Data sheets and support documentation can be found on Micrels web site at: www.micrel.com. Ordering Information Part Number Demodulator Operating Mode Shutdown WAKEB Package Lead Finish Bandwidth Output Flag MICRF002YM User Programmable Fixed or Sweep Yes Yes 16-Pin SOIC Pb-Free MICRF022YM-SW48 5000Hz Sweep No Yes 8-Pin SOIC Pb-Free MICRF022YM-FS12 1250Hz Fixed Yes No 8-Pin SOIC Pb-Free MICRF022YM-FS24 2500Hz Fixed Yes No 8-Pin SOIC Pb-Free MICRF022YM-FS48 5000Hz Fixed Yes No 8-Pin SOIC Pb-Free QwikRadio is a registered trademark of Micrel, Inc. The QwikRadio ICs were developed under a partnership agreement with AIT of Orlando, FL. Micrel Inc. 2180 Fortune Drive San Jose, CA 95131 USA tel +1 (408) 944-0800 fax + 1 (408) 474-1000 Micrel, Inc. MICRF002/RF022 Typical Application 1/4 Wave Monopole MICRF002 SEL0SEL0 SWEN VSSRF REFOSC 4.8970MHz 10pF VSSRF SEL1 68nH ANT CAGC VDDRF +5V WAKEB 4.7F VDDBB SHUT Data CTH DO Output 15nH 0.047F NC VSSBB 315MHz 800bps On-Off Keyed Receiver Pin Configuration SEL0 1 16 SWEN VSSRF 2 15 REFOSC VSSRF 3 14 SEL1 ANT 4 13 CAGC VSSRF 1 8 REFOSC VDDRF 5 12 WAKEB ANT 2 7 CAGC VDDBB 6 11 SHUT VDDRF 3 6 SHUT/WAKEB CTH 7 10 DO CTH 4 5 DO NC 8 9 VSSBB 16-Pin SOIC (M) 8-Pin SOIC (M) 8-Pin Options Demodulator Bandwidth The standard 16-pin package allows complete control of SEL0 SEL1 all configurable features. Some reduced function 8-pin Sweep-Mode Fixed-Mode versions are also available, see Ordering Information 1 1 5000Hz 10000Hz on page 1. 0 1 2500Hz 5000Hz For high-volume applications additional customized 8-pin devices can be produced. SWEN, SEL0 and SEL1 pins 1 0 1250Hz 2500Hz are internally bonded to reduce the pin count pin 6 may 0 0 625Hz 1250Hz be configured as either SHUT or WAKEB Table 1. Nominal Demodulator Filter Bandwidth vs. SEL0, SEL1 and Operating Mode M9999-070808 July 2008 2