rfRXD0420 UHF Receiver Microcontroller Datasheet

Buy RFRXD0420-I/LQ

Photograph

Features
Low Cost Single Conversion Superheterodyne Receiver Architecture Compatible with rfPIC and rfHCS Easy interface to PICmicro microcontroller(MCU)and KEELOQ decoders Selectable LNA gain control for improved dynamic range Selectable IF bandwidth via external ceramic IF filter FSK/FM quadrature (phase coincidence) Detector Demodulator UHF ASK/FSK Receiver - Single frequency receiver set by single frequency - 300 MHz to 450 MHz - ASK : 80 kbps NRZ - FSK : 40 kbps NRZ - 455 kHz to 21 MHz - RSSi range: 70 dB - ±5 kHz to ±120 kHz - Maximum FM Modulation Frequency: 15 kHz Bi-CMOS Technology - Wide Operating Voltage Range - Operating Current: 9.2 mA (typical, LNA High Gain mode), <100 nA standby - Operating Temperature: -40°c to -85°c Applications - Wireless Remote Command and Control - Wireless Security Systems - Remote Keyless Entry (RKE) - Low Power Telemetry - Low Power FM Receiver - Home Automation - Remote Sensing

Features

Low Cost Single Conversion Superheterodyne Receiver Architecture
Compatible with rfPIC and rfHCS
Easy interface to PICmicro microcontroller(MCU)and KEELOQ decoders
Selectable LNA gain control for improved dynamic range
Selectable IF bandwidth via external ceramic IF filter
FSK/FM quadrature (phase coincidence) Detector Demodulator
UHF ASK/FSK Receiver
- - Single frequency receiver set by single frequency
- - 300 MHz to 450 MHz
- - ASK : 80 kbps NRZ
- - FSK : 40 kbps NRZ
- - 455 kHz to 21 MHz
- - RSSi range: 70 dB
- - ±5 kHz to ±120 kHz
- - Maximum FM Modulation Frequency: 15 kHz
Bi-CMOS Technology
- - Wide Operating Voltage Range
- - Operating Current: 9.2 mA (typical, LNA High Gain mode), <100 nA standby
- - Operating Temperature: -40°c to -85°c
Applications
- - Wireless Remote Command and Control
- - Wireless Security Systems
- - Remote Keyless Entry (RKE)
- - Low Power Telemetry
- - Low Power FM Receiver
- - Home Automation
- - Remote Sensing

Pin Layout

Pin Description

Pin Number	Description
1	Ground Reference
2	LNA Gain Control (with hysteresis)
3	LNA output (open collector)
4	1st IF Stage Input
5	Ground Reference
6	MIXER1 bias (open collector)
7	MIXER1 bias (open collector)
8	Positive Supply
9	1st IF stage input
10	Ground Reference
11	2nd IF Stage Input
12	Limiter IF Amplifier External Feedback Capacitor
13	Limiter IF Amplifier External Feedback Capacitor
14	Positive Supply
15	2nd IF Stage Input
16	Demodulator Input
17	Positive Supply
18	Operational Amplifier Output
19	Operational Amplifier Input (negative)
20	Operational Amplifier Input (positive)
21	Received Signal Strength Indicator Output
22	Ground Reference
23	Demodulator Output (negative)
24	Demodulator Output (negative)
25	Ground Reference
26	Crystal Oscillator Input
27	Positive Supply
28	Receiver Enable Input
29	External Loop Filter Connection
30	Ground Reference
31	LNA Input
32	Positive Supply

Block Diagram

Technical Data

Datasheet

Microchip Web Site - Datasheet for RFRXD0420

Application Notes