MICRF002/RF022 Micrel MICRF002/RF022 300-440MHz QwikRadioASK Receiver Final Information General Description The MICRF002 is a single chip ASK/OOK (ON-OFF Keyed) RF receiver IC. This device is a true antenna-in to data-out monolithic device. All RF and IF tuning is accomplished QwikRadio automatically within the IC which eliminates manual tuning and reduces production costs. The result is a highly reliable Features yet low cost solution. 300MHz to 440MHz frequency range The MICRF002 is a fully featured part in 16-pin packaging, Data-rate up to 10kbps (fixed-mode) the MICRF022 is the same part packaged in 8-pin packaging Low Power Consumption with a reduced feature set (see Ordering Information for 2.2mA fully operational (315MHz) more information). 0.9 A in shutdown The MICRF002 is an enhanced version of the MICRF001 220 A in polled operation (10:1 duty-cycle) and MICRF011. The MICRF002 provides two additional Wake-up output flag to enable decoders and micropro- functions over the MICRF001/011, (1) a Shutdown pin, which cessors may be used to turn the device off for duty-cycled operation, Very low RF reradiation at the antenna and (2) a Wake-up output, which provides an output flag Highly integrated with extremely low external part count indicating when an RF signal is present. These 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 Automotive Remote Keyless Entry (RKE) is provided within the MICRF002, so no external filters are Remote controls necessary. One of four demodulator filter bandwidths may be Remote fan and light control selected externally by the user. Garage door and gate openers The MICRF002 offer two modes of operation fixed-mode (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. Typical Application 1/4 Wave Monopole MICRF002 SEL0SEL0 SWEN VSSRF REFOSC 4.8970MHz 12pF VSSRF SEL1 68nH ANT CAGC VDDRF +5V WAKEB 4.7uF VDDBB SHUT Data CTH DO Output 12nH 0.047uF NC VSSBB 315MHz 800bps On-Off Keyed Receiver QwikRadio is a trademark of Micrel, Inc. The QwikRadio ICs were developed under a partnership agreement with AIT of Orlando, Florida. Micrel, Inc. 1849 Fortune Drive San Jose, CA 95131 USA tel + 1 (408) 944-0800 fax + 1 (408) 944-0970 MICRF002/RF022 Micrel Ordering Information Demodulator WAKEB Part Number Bandwidth Operating Mode Shutdown Output Flag Package MICRF002BM User Programable Fixed or Sweep Yes Yes 16-Pin SOP MICRF022BM-SW48 5000Hz Sweep No Yes 8-Pin SOP MICRF022BM-FS12 1250Hz Fixed Yes No 8-Pin SOP MICRF022BM-FS24 2500Hz Fixed Yes No 8-Pin SOP MICRF022BM-FS48 5000Hz Fixed Yes No 8-Pin SOP Pin Configuration MICRF002Bx SEL0116 SWEN SEL0 VSSRF215 REFOSC MICRF022Bx-xxxx VSSRF314 SEL1 VSSRF18 REFOSC ANT413 CAGC ANT27 CAGC VDDRF512 WAKEB VDDRF36 SHUT/WAKEB VDDBB611 SHUT CTH45 DO CTH710 DO NC89 VSSBB Standard 16-Pin or 8-Pin SOP (M) Packages 8-Pin Options The standard 16-pin package allows complete control of all configurable features. Some reduced function 8-pin versions are also available, see Ordering Information above. For high-volume applications additional customized 8-pin devices can be produced. SWEN, SEL0 and SEL1 pins are internally bonded to reduce the pin count. pin 6 may be configured as either SHUT or WAKEB. Demodulator Bandwidth S1EL0 SEL Seweep Mode FIXED Mod 115z000Hz 10000H 012z500Hz 5000H 101z250Hz 2500H 006z25Hz 1250H Table 1. Nominal Demodulator Filter Bandwidth vs. SEL0, SEL1 and Operating Mode MICRF002/RF022 2 March 2003