ADF7025 Datasheet, PDF (1/44 Pages) Analog Devices – High Performance ISM Band Transceiver IC

High Performance
ISM Band Transceiver IC
ADF7025
FEATURES
Low power, zero-IF RF transceiver
Frequency bands
431 MHz to 464 MHz
862 MHz to 870 MHz
902 MHz to 928 MHz
Data rates supported
9.6 kbps to 384 kbps, FSK
2.3 V to 3.6 V power supply
Programmable output power
−16 dBm to +13 dBm in 63 steps
Receiver sensitivity
−104.2 dBm at 38.4 kbps, FSK
−100 dBm at 172.8 kbps, FSK
−95.8 dBm at 384 kbps, FSK
Low power consumption
19 mA in receive mode
28 mA in transmit mode (10 dBm output)
On-chip VCO and Fractional-N PLL
On-chip, 7-bit ADC and temperature sensor
Digital RSSI
Integrated TRx switch
Leakage current < 1 µA in power-down mode
APPLICATIONS
Wireless audio/video
Remote control/security systems
Wireless metering
Keyless entry
Home automation
RSET
CREG(1:4)
FUNCTIONAL BLOCK DIAGRAM
ADCIN
MUXOUT
R_LNA
BIAS
RFIN
RFINB
LNA
GAIN
LDO(1:4)
OFFSET
CORRECTION
TEMP
SENSOR
TEST MUX
LP FILTER
RSSI
MUX _{7-BIT ADC}
FSK
DEMODULATOR
DATA
SYNCHRONIZER
OFFSET
CORRECTION
FSK MOD
CONTROL
Σ-∆
MODULATOR
AGC
CONTROL
Tx/Rx
CONTROL
RFOUT
DIVIDERS/
MUXING
DIV P
N/N+1
VCO
CP
PFD
DIV R
RING OSC
CLK
DIV
SERIAL
PORT
VCOIN CPOUT
OSC1 OSC2
Figure 1.
CLKOUT
CE
DATA CLK
DATA I/O
INT/LOCK
SLE
SDATA
SREAD
SCLK
Rev. A
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