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).
•
0.9µA in shutdown
The MICRF002 is an enhanced version of the MICRF001
•
220µA 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
•
Very low RF re-radiation at the antenna
operation, and (2) a “Wake-up” output, which provides an
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
Micrel’s web site at: www.micrel.com.
_________________________________________________________________________________________________________
Ordering Information
Part Number
MICRF002YM
MICRF022YM-SW48
MICRF022YM-FS12
MICRF022YM-FS24
MICRF022YM-FS48
Demodulator
Bandwidth
User Programmable
5000Hz
1250Hz
2500Hz
5000Hz
Operating Mode
Fixed or Sweep
Sweep
Fixed
Fixed
Fixed
Shutdown
Yes
No
Yes
Yes
Yes
WAKEB
Output Flag
Yes
Yes
No
No
No
Package
16-Pin SOIC
8-Pin SOIC
8-Pin SOIC
8-Pin SOIC
8-Pin SOIC
Lead Finish
Pb-Free
Pb-Free
Pb-Free
Pb-Free
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 • http://www.micrel.com
July 2008
M9999-070808
MICREL [ MICREL SEMICONDUCTOR ]
