MICRF002/RF022

300-440MHz QwikRadio

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 (

July 2008

M9999-070808

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 automatically within the IC which eliminates

manual tuning and reduces production costs. The result is

a highly reliable yet low cost solution.

The MICRF002 is a fully featured part in 16-pin packaging,

the MICRF022 is the same part packaged in 8-pin

packaging with a reduced feature set (see “Ordering

Information” for more information).

The MICRF002 is an enhanced version of the MICRF001

and MICRF011. The MICRF002 provides two additional

functions over the MICRF001/011, (1) a Shutdown pin,

which may be used to turn the device off for duty-cycled

operation, and (2) a “Wake-up” output, which provides an

output flag 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.

All IF filtering and post-detection (demodulator) data

filtering is provided within the MICRF002, so no external

filters are necessary. One of four demodulator filter

bandwidths may be selected externally by the user.

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.

Data sheets and support documentation can be found on

Micrel’s web site at: www.micrel.com.

QwikRadio

®

Features

• 300MHz to 440MHz frequency range

• Data-rate up to 10kbps (fixed-mode)

• Low Power Consumption

• 2.2mA fully operational (315MHz)

• 0.9µA in shutdown

• 220µA in polled operation (10:1 duty-cycle)

• Wake-up output flag to enable decoders and

microprocessors

• Very low RF re-radiation at the antenna

• Highly integrated with extremely low external part count

Applications

• Automotive remote keyless entry (RKE)

• Remote controls

• Remote fan and light control

• Garage door and gate openers

_________________________________________________________________________________________________________

Ordering Information

Part Number

Demodulator

Bandwidth

Operating Mode

Shutdown

WAKEB

Output Flag

Package

Lead Finish

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