MICRF213

3.3V, QwikRadio

QwikRadio is a registered trademark of Micrel, Inc.

Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

May 2007

M9999-052307-A

(408) 944-0800

General Description

The MICRF213 is a general purpose, 3.3V QwikRadio

Receiver that operates at 315MHz with typical sensitivity

of -110dBm.

The

MICRF213

functions

as

a

super-heterodyne

receiver for OOK and ASK modulation up to 7.2kbps.

The

down-conversion

mixer

also

provides

image

rejection. All post-detection data filtering is provided on

the MICRF213. Any one of four filter bandwidths may be

selected externally by the user using binary steps (from

1.18kHz to 9.44kHz, Manchester Encoded). The user

need only configure the device with a set of easily

determined

values,

based

upon

data

rate,

code

modulation format, and desired duty-cycle operation.

Features

• Up to –110dBm sensitivity, 1kbps and BER 10E-02

• Image Rejection Mixer

• Frequency from 300MHz to 350MHz

• Low current consumption: 3.9mA @ 315MHz,

continuous on data rates to 7.2kbps (Manchester

Encoded)

• Analog RSSI Output

• No IF filter required

• Excellent selectivity and noise rejection

• Low external part count

Ordering Information

Part Number

Temperature Range

Package

MICRF213AYQS

–40° to +105°C

16-Pin QSOP

Typical Application

+3.3V

C6

0.47µF

C3

1.8pF

ANT1

230 mm (9.1 inches)

C4

4.7µF

Y1

9.81563MHz

C8

6.8pF

U1 MICRFAYQS

1

2

3

4

5

6

7

89

10

11

12

13

14

15

16

RO1

GNDRF

ANT

GNDRF

VDD

SQ

SEL0

SHDN

GND

DO

SEL1

CTH

CAGC

RSSI

NC

RO2

C5

0.1µF

L1

39nH

L2

68nH

DO

315MHz, 1kHz Baud Rate Example