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MICRF213
3.3V, QwikRadio ? 315MHz Receiver
General Description
Features
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
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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
modulation format, and desired duty-cycle operation.
Ordering Information
Typical Application
ANT1
230 mm (9.1 inches)
Part Number
MICRF213AYQS
U1 MICRFAYQS
Temperature Range
–40° to +105°C
Package
16-Pin QSOP
C3
1.8pF
+3.3V
1
2
3
4
5
RO1
GNDRF
ANT
GNDRF
VDD
RO2
NC
RSSI
CAGC
CTH
16
15
14
13
12
Y1
9.81563MHz
L1
39nH
C8
6.8pF
L2
68nH
C5
0.1μF
6
7
8
SQ
SEL0
SHDN
SEL1
DO
GND
11
10
9
DO
C6
0.47μF
C4
4.7μF
315MHz, 1kHz Baud Rate Example
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
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