High Performance Narrowband ISM Transceiver IC
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Preliminary Technical Data
FEATURES
Low power, low IF transceiver Frequency bands 80 MHz to 650 MHz...
Description
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Preliminary Technical Data
FEATURES
Low power, low IF transceiver Frequency bands 80 MHz to 650 MHz 862 MHz to 940 MHz Modulation schemes 2FSK, 3FSK, 4FSK Spectral shaping Gaussian and raised-cosine filtering Data rates supported 0.05 kbps to 25 kbps 2.3 V to 3.6 V power supply Programmable output power −16 dBm to +13 dBm in 63 steps Automatic PA ramp control Receiver sensitivity −125 dBm at 1 kbps, 2 FSK On-chip VCO and fractional-N PLL
High Performance Narrowband ISM Transceiver IC ADF7021
On-chip 7-bit ADC and temperature sensor Fully automatic frequency control loop (AFC) Digital RSSI Integrated Tx/Rx switch Leakage current <1 μA in power-down mode
APPLICATIONS
Narrow-band standards ETSI EN 300-220, FCC Part 90, FCC Part 15, FCC Part 95, ARIB STD-T67 Low cost, wireless data transfer Remote control/security systems Wireless metering Private mobile radio Wireless medical telemetry service (WMTS) Keyless entry Home automation Process and building control Pagers
FUNCTIONAL BLOCK DIAGRAM
RSET TEMP SENSOR CE CREG(1:4) MUXOUT MUX 7-BIT ADC
RLNA
POLARIZATION
LDO(1:4)
TEST MUX
LNA
RFIN RFINB GAIN
IF FILTER
RSSI/ OFFSET CORRECTION
2FSK 3FSK 4FSK DEMODULATOR
CLOCK AND DATA RECOVERY
DATA CLK | TxDATA Tx/Rx CONTROL DATA I/O | RxDATA SWD
AGC CONTROL SERIAL PORT
SLE SDATA SREAD SCLK
PA RAMP
AFC CONTROL
RFOUT
DIVIDERS/ MUXING
DIV P
N/N + 1
Σ-Δ MODULATOR
2FSK 3FSK 4FSK MOD CONTROL
GAUSSIAN/ RAISED COSINE FILTER
VCO MUX CP PFD
DIV R RING OSC C...
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