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RFRXD0920 Datasheet

  • RFRXD0920

  • UHF ASK/FSK/FM Receiver

  • 632.39KB

  • 32頁

  • MICROCHIP   MICROCHIP

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rfRXD0420/0920
UHF ASK/FSK/FM Receiver
Features:
鈥?Low cost single conversion superheterodyne
receiver architecture
鈥?Compatible with rfPIC鈩?and rfHCS series of RF
transmitters
鈥?Easy interface to PICmicro
廬
microcontroller
(MCU) and K
EE
L
OQ廬
decoders
鈥?VCO phase locked to quartz crystal reference:
- Narrow receiver bandwidth
- Maximizes range and interference immunity
鈥?Selectable LNA gain control for improved dynamic
range
鈥?Selectable IF bandwidth via external ceramic IF
filter
鈥?Received Signal Strength Indicator (RSSI) for
signal strength indication (FSK, FM) and ASK
demodulation
鈥?FSK/FM quadrature (phase coincidence) detector
demodulator
鈥?32-Lead LQFP package
Pin Diagram:
LQFP
V
DD
LNA
IN
V
SS
LF
ENRX
V
DD
XTAL
V
SS
32
31
30
29
28
27
26
25
V
SS
LNA
GAIN
LNA
OUT
1IF
IN
V
SS
1IF+
1IF-
V
DD
1
2
3
4
5
6
7
8
rfRXD0420
rfRXD0920
24
23
22
21
20
19
18
17
DEM
OUT
-
DEM
OUT
+
V
SS
RSSI
OPA+
OPA-
OPA
V
DD
16
15
14
13
12
11
10
9
DEM
IN
2IF
OUT
V
DD
FBC2
FBC1
2IF
IN
V
SS
1IF
OUT
Applications:
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Wireless remote command and control
Wireless security systems
Remote Keyless Entry (RKE)
Low power telemetry
Low power FM receiver
Home automation
Remote sensing
UHF ASK/FSK Receiver:
鈥?Single frequency receiver set by crystal frequency
鈥?Receive frequency range:
Device
rfRXD0420
rfRXD0920
Frequency Range
300 MHz to 450 MHz
800 MHz to 930 MHz
鈥?Maximum data rate:
- ASK: 80 Kbps NRZ
- FSK: 40 Kbps NRZ
鈥?IF frequency range: 455 kHz to 21.4 MHz
鈥?RSSI range: 70 dB
鈥?Frequency deviation range: 鹵5 kHz to 鹵120 kHz
鈥?Maximum FM modulation frequency: 15 kHz
Bi-CMOS Technology:
鈥?Wide operating voltage range
鈥?Low current consumption in Active and Standby
modes
- rfRXD0420
- 8.2 mA (typical, LNA High Gain mode)
- <100 nA standby
- rfRXD0920
- 9.2 mA (typical, LNA High Gain mode)
- <100 nA standby
鈥?Wide temperature range:
- Industrial: -40擄C to +85擄C
錚?/div>
2003 Microchip Technology Inc.
Preliminary
DS70090A-page 1

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