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ADF7902BRUZ-RL1 Datenblatt(PDF) 1 Page - Analog Devices |
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ADF7902BRUZ-RL1 Datenblatt(HTML) 1 Page - Analog Devices |
1 / 12 page ISM Band FSK Receiver IC ADF7902 Rev. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners. 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. 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 IF FILTER FSK DEMODULATOR CP LNA VCO PFD OSC N DIVIDER SELECT CPOUT VCOIN OSC1 CLKOUT CH1_SEL CH2_SEL CH3_SEL Rx_DATA LNA_1 LNA_2 BIAS LDO1 LDO2 CREG1 LNA_RSET RSET GND CE ADF7902 CLKOUT_ENB VBAT1 CREG2 VBAT2 OSC2 CVCO Figure 1. |
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