MICRF002YM View Datasheet(PDF) - Micrel
Part Name
Description
Manufacturer
MICRF002YM Datasheet PDF : 17 Pages
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Micrel, Inc.
Applications Example
315MHz Receiver/Decoder Application
Figure 7 illustrates a typical application for the MICRF002
UHF Receiver IC. This receiver operates continuously (not
duty cycled) in sweep mode, and features 6-bit address
decoding and two output code bits.
MICRF002/RF022
Operation in this example is at 315MHz, and may be
customized by selection of the appropriate frequency
reference (Y1), and adjustment of the antenna length. The
value of C4 would also change if the optional input filter is
used. Changes from the 1kb/s data rate may require a
change in the value of R1. A bill of materials accompanies
the schematic.
+5V
Supply
Input
Optional Filter
8.2pF, 16.6nH
pcb foil inductor
1in of 30mil trace
0.4λ monopole
antenna (11.6in)
C4
L1
U1 MICRF002
SSEELL00
SWEN
VSSRF REFOSC
VSSRF
SEL1
ANT
CAGC
C1
4.7µF
C2
2.2µF
VDDRF
VDDBB
CTH
NC
WAKEB
SHUT
DO
VSSBB
RF Baseband
(Analog) (Digital)
Ground Ground
4.8970MHz
Y1
4.7µF
6-bit
address
U2 HT-12D
A0 VDD R2
A1
VT
A2 OSC1
1k
R1
A3 OSC2
A4
DIN 68k
A5 D11
A6 D10
A7
D9
VSS D8
Code Bit 0
Code Bit 1
Figure 7. 315MHz, 1kbps On-Off Keyed Recwiver/Decoder
Bill of Materials
Item
C1
C2
C3
C4
CR1
D1
Part Number
CSA6.00MG
SSF-LX100LID
Manufacturer
Vishay(1)
Vishay(1)
Vishay(1)
Vishay(1)
Murata(2)
Lumex(3)
R1
R2
U1
MICRF002
U2
HT-12D
Vishay(1)
Micrel, Inc.(4)
Holtek(5)
Notes:
1. Vishay Tel: (203) 268-6261
2. Murata Tel: (800) 241-6574, Fx: (770) 436-3030
3. Lumex Tel: (800) 278-5666, Fx: (847) 359-8904
5. Micrel, Inc.: (408) 944-0800
5. Holtek Tel: (408) 894-9046, Fx: (408) 894-0838
Description
Qty.
4.7µF, Dipped Tantalum Capacitor
1
2.2µF, Dipped Tantalum Capacitor
1
4.7µF, Dipped Tantalum Capacitor
1
8.2pF, COG Ceramic Capacitor
1
6.00MHz, Ceramic Resonator
1
RED LED
1
68k, 1/4W, 5%
1
1k, 1/4W, 5%
1
300-440MHz QwikRadio® ASK Receiver
1
Logic Decoder
1
July 2008
14
M9999-070808
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