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PDF ADF7021-V Data sheet ( Hoja de datos )
| Número de pieza | ADF7021-V | |
| Descripción | High Performance Narrow-Band Transceiver IC | |
| Fabricantes | Analog Devices | |
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Data Sheet
High Performance,
Narrow-Band Transceiver IC
ADF7021-V
FEATURES
High performance, low power, narrow-band transceiver
Enhanced performance ADF7021-N with external VCO
Frequency bands using external VCO: 80 MHz to 960 MHz
Improved adjacent channel power (ACP) and adjacent
channel rejection (ACR) compared with the ADF7021-N
Programmable IF filter bandwidths: 9 kHz, 13.5 kHz,
and 18.5 kHz
Modulation schemes: 2FSK, 3FSK, 4FSK, MSK
Spectral shaping: Gaussian and raised cosine filtering
Data rates: 0.05 kbps to 24 kbps
Power supply: 2.3 V to 3.6 V
Programmable output power: −16 dBm to +13 dBm
in 63 steps
Automatic power amplifier (PA) ramp control
Receiver sensitivity
−125 dBm at 250 bps, 2FSK
−122 dBm at 1 kbps, 2FSK
Patent pending, on-chip image rejection calibration
On-chip fractional-N PLL
On-chip, 7-bit ADC and temperature sensor
Fully automatic frequency control (AFC) loop
Digital received signal strength indication (RSSI)
Integrated Tx/Rx switch
Leakage current in power-down mode: 0.1 μA
APPLICATIONS
Narrow-band, short-range device (SRD) standards
ETSI EN 300 220
500 mW output power capability in 869 MHz g3 subband
with external PA
High performance receiver rejection, blocking, and
adjacent channel power (ACP)
FCC Part 90 (meets Emission Mask D requirements)
FCC Part 95
ARIB STD-T67
Wireless metering
Narrow-band wireless telemetry
RLNA
RSET
FUNCTIONAL BLOCK DIAGRAM
CE CREG[1:4]
TEMP
SENSOR
MUX
7-BIT ADC
LDO[1:4]
MUXOUT
TEST MUX
RFIN
RFIN
LNA
IF FILTER
RSSI/
LOG AMP
2FSK
3FSK
4FSK
DEMODULATOR
CLOCK
AND DATA
RECOVERY
Tx/Rx
CONTROL
GAIN
PA RAMP
ADF7021-V
AGC
CONTROL
AFC
CONTROL
SERIAL
PORT
RFOUT
÷1/÷2
÷2
BUFFER
DIV P
N/N + 1
Σ-∆
MODULATOR
2FSK
3FSK
4FSK
MOD CONTROL
CP PFD
DIV R
OSC
CLK
DIV
GAUSSIAN/
RAISED COSINE
FILTER
3FSK
ENCODING
L2 CPOUT
OSC1 OSC2
Figure 1.
CLKOUT
TxRxCLK
TxRxDATA
SWD
SLE
SDATA
SREAD
SCLK
Rev. B
Document Feedback
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responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. 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 ©2010–2014 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
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