MICRF213_11 Datasheet, PDF (1/16 Pages) Micrel Semiconductor – 3.3V, QwikRadio 315MHz Receiver

MICRF213
3.3V, QwikRadio^® 315MHz Receiver
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
MICRF213AYQS
–40° to +105°C
Package
16-Pin QSOP
Typical Application
ANT1
230 mm (9.1 inches)
C3
1.8pF
L1
39nH
C8
6.8pF
+3.3V
L2
68nH
C5
0.1µF
U1 MICRFAYQS
1 _RO1
RO2 ¹⁶
2 _GNDRF
NC ¹⁵
3 _ANT
RSSI ¹⁴
4 _GNDRF
CAGC ¹³
5 _VDD
CTH ¹²
6 _SQ
SEL1 ¹¹
7 _SEL0
DO ¹⁰
8 _SHDN
GND ⁹
Y1
9.81563MHz
DO
C6
C4
0.47µF 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 [phone] • fax + 1 [phone] • http://www.micrel.com
May 2007
M9999-052307-A
[phone]