Micrel, Inc.
MICRF002/RF022
Typical Application
1/4 Wave Monopole
MICRF002
SSEELL00 SWEN
VSSRF REFOSC
4.8970MHz
10pF
68nH
VSSRF
ANT
VDDRF
VDDBB
SEL1
CAGC
WAKEB
SHUT
DO
+5V
4.7µF
Data
Output
CTH
NC
15nH
0.047µF
VSSBB
315MHz 800bps On-Off Keyed Receiver
Pin Configuration
SEL0
VSSRF
VSSRF
ANT
1
2
3
4
5
6
7
8
16 SWEN
15 REFOSC
14 SEL1
13 CAGC
12 WAKEB
11 SHUT
10 DO
VSSRF
ANT
1
2
3
4
8
7
6
5
REFOSC
CAGC
VDDRF
VDDBB
CTH
VDDRF
CTH
SHUT/WAKEB
DO
NC
9 VSSBB
16-Pin SOIC (M)
8-Pin SOIC (M)
8-Pin Options
Demodulator Bandwidth
Sweep-Mode Fixed-Mode
5000Hz 10000Hz
The standard 16-pin package allows complete control of
all configurable features. Some reduced function 8-pin
versions are also available, see “Ordering Information”
on page 1.
SEL0
SEL1
1
0
1
0
1
1
0
0
2500Hz
1250Hz
625Hz
5000Hz
2500Hz
1250Hz
For high-volume applications additional customized 8-pin
devices can be produced. SWEN, SEL0 and SEL1 pins
are internally bonded to reduce the pin count; pin 6 may
be configured as either SHUT or WAKEB
Table 1. Nominal Demodulator Filter Bandwidth vs.
SEL0, SEL1 and Operating Mode
M9999-070808
July 2008
2
MICREL [ MICREL SEMICONDUCTOR ]
