ADF7902BRUZ Datasheet, PDF (1/12 Pages) Analog Devices – ISM Band FSK Receiver IC

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
ISM Band
FSK Receiver IC
ADF7902
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.
ADF7902
LNA_1
LNA_2
LNA
VBAT1
CREG1
VBAT2
CREG2
LDO1
LDO2
LNA_RSET
BIAS
FUNCTIONAL BLOCK DIAGRAM
GND
CE
IF FILTER
FSK
DEMODULATOR
N DIVIDER
SELECT
VCO
CP
PFD
OSC
RSET CVCO VCOIN
CPOUT
Figure 1.
OSC1 OSC2
Rx_DATA
CH1_SEL
CH2_SEL
CH3_SEL
CLKOUT
CLKOUT_ENB
Rev. 0
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