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Microchip Technology - UHF ASK/FSK/FM Receiver

Numéro de référence RFRXD0920
Description UHF ASK/FSK/FM Receiver
Fabricant Microchip Technology 
Logo Microchip Technology 





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RFRXD0920 fiche technique
rfRXD0420/0920
UHF ASK/FSK/FM Receiver
Features:
• Low cost single conversion superheterodyne
receiver architecture
• Compatible with rfPIC™ and rfHCS series of RF
transmitters
• Easy interface to PICmicro® microcontroller
(MCU) and KEELOQ® decoders
• VCO phase locked to quartz crystal reference:
- Narrow receiver bandwidth
- Maximizes range and interference immunity
• Selectable LNA gain control for improved dynamic
range
• Selectable IF bandwidth via external ceramic IF
filter
• Received Signal Strength Indicator (RSSI) for
signal strength indication (FSK, FM) and ASK
demodulation
• FSK/FM quadrature (phase coincidence) detector
demodulator
• 32-Lead LQFP package
UHF ASK/FSK Receiver:
• Single frequency receiver set by crystal frequency
• Receive frequency range:
Device
Frequency Range
rfRXD0420
300 MHz to 450 MHz
rfRXD0920
800 MHz to 930 MHz
• Maximum data rate:
- ASK: 80 Kbps NRZ
- FSK: 40 Kbps NRZ
• IF frequency range: 455 kHz to 21.4 MHz
• RSSI range: 70 dB
• Frequency deviation range: ±5 kHz to ±120 kHz
• Maximum FM modulation frequency: 15 kHz
Pin Diagram:
LQFP
VSS
LNAGAIN
LNAOUT
1IFIN
VSS
1IF+
1IF-
VDD
1 24
2 23
3
4
rfRXD0420
22
21
5 rfRXD0920 20
6 19
7 18
8 17
DEMOUT-
DEMOUT+
VSS
RSSI
OPA+
OPA-
OPA
VDD
Applications:
• Wireless remote command and control
• Wireless security systems
• Remote Keyless Entry (RKE)
• Low power telemetry
• Low power FM receiver
• Home automation
• Remote sensing
Bi-CMOS Technology:
• Wide operating voltage range
• 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
• Wide temperature range:
- Industrial: -40°C to +85°C
2003 Microchip Technology Inc.
Preliminary
DS70090A-page 1

PagesPages 30
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