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ADF7902BRUZ-RL71

Description
ISM Band FSK Receiver IC
File Size245KB,12 Pages
ManufacturerADI
Websitehttps://www.analog.com
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ADF7902BRUZ-RL71 Overview

ISM Band FSK Receiver IC

ISM Band
FSK Receiver IC
ADF7902
FEATURES
Single-chip, low power UHF receiver
Companion receiver to ADF7901 transmitter
Frequency range: 369.5 MHz to 395.9 MHz
Eight RF channels selectable with three digital inputs
Modulation parameters supported
FSK demodulation
2 kbps data rate
34.8 kHz frequency deviation
5.0 V supply voltage
Low power consumption
18.5 mA with receiver enabled
1 μA standby current
24-lead TSSOP
GENERAL DESCRIPTION
The ADF7902 is a low power UHF receiver. The device demodu-
lates frequency shift keyed (FSK) signals with 34.8 kHz frequency
deviation and at data rates of up to 2 kbps. There are eight specific
RF channels ranging from 369.5 MHz to 395.9 MHz on which the
receiver can operate. Each channel is selectable by configuring
three digital control lines.
The ADF7902 is designed for low power applications, consuming
18.5 mA (typical) during normal operation and 1 μA (maximum)
in standby mode.
FUNCTIONAL BLOCK DIAGRAM
GND
CE
ADF7902
LNA_1
LNA
LNA_2
IF FILTER
FSK
DEMODULATOR
Rx_DATA
VBAT1
CREG1
VBAT2
CREG2
LDO1
CH1_SEL
N DIVIDER
SELECT
LDO2
CH2_SEL
CH3_SEL
VCO
LNA_RSET
BIAS
CP
PFD
OSC
CLKOUT
CLKOUT_ENB
06456-001
RSET
CVCO
VCOIN
CPOUT
OSC1 OSC2
Figure 1.
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
©2007 Analog Devices, Inc. All rights reserved.

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