ADF7020 Datasheet, PDF (1/40 Pages) Analog Devices – High Performance ISM Band FSK/ASK Transceiver IC

Preliminary Technical Data
High Performance ISM Band
FSK/ASK Transceiver IC
ADF7020
FEATURES
Low power, low IF transceiver
Frequency bands:
433 MHz to 464 MHz
862 MHz to 928 MHz
Data rates supported:
0.3 kbps to 200 kbps, FSK
0.3 kbps to 64 kbps, ASK
2.3 V to 3.6 V power supply
Programmable output power:
−16 dBm to +13 dBm in 0.3 dBm steps
Receiver sensitivity:
−117.5 dBm at 1 kbps, FSK
−110.5 dBm at 9.6 kbps, FSK
−106.5 dBm at 9.6 kbps, ASK
Low power consumption:
19 mA in receive mode
22 mA in transmit mode (10 dBm output)
RSET
VREG(1:4)
On-chip VCO and fractional-N PLL
On-chip 7-bit ADC and temperature sensor
±1 ppm RF output frequency accuracy possible from
low cost 100 ppm crystal
Digital RSSI
Leakage current <1 µA in power-down mode
48-lead ultrasmall MLF package (chip scale)
APPLICATIONS
Low cost wireless data transfer
Remote control/security systems
Wireless metering
Keyless entry
Home automation
Process and building control
Wireless voice
FUNCTIONAL BLOCK DIAGRAM
ADCIN
MUXOUT
R_LNA
BIAS
LDO(1:4)
OFFSET
CORRECTION
TEMP
SENSOR
TEST MUX
RFIN
RFINB
PA OUT
LNA
GAIN
IF FILTER
RSSI
MUX _{7-BIT ADC}
FSK/ASK
DEMODULATOR
OFFSET
CORRECTION
AGC
CONTROL
FSK MOD
CONTROL
GAUSSIAN
FILTER
Σ-∆
MODULATOR
AFC
CONTROL
DIVIDERS/
MUXING
DIV P
N/N+1
ASK/OOK
MOD CONTROL
VCO
GAUSSIAN FILTER
CP
PFD
DIV R
RING
OSC
CLK
DIV
DATA
SYNCHRONIZER
Tx/Rx
CONTROL
SERIAL
PORT
VCOIN CPOUT
OSC
Figure 1.
CLKOUT
CE
RxCLK
Tx/Rx DATA
CLKOUT
INT/LOCK
SLE
SDATA IN
SDATA OUT
SCLK
Rev. PrH
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