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Analog Devices - High Performance ISM Band ASK/FSK/GFSK Transmitter IC

Numéro de référence ADF7011
Description High Performance ISM Band ASK/FSK/GFSK Transmitter IC
Fabricant Analog Devices 
Logo Analog Devices 





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ADF7011 fiche technique
High Performance ISM Bandwww.DataSheet4U.com
ASK/FSK/GFSK Transmitter IC
ADF7011
FEATURES
Single Chip Low Power UHF Transmitter
Frequency Band
433 MHz to 435 MHz
868 MHz to 870 MHz
On-Chip VCO and Fractional-N PLL
2.3 V to 3.6 V Supply Voltage
Programmable Output Power
–16 dBm to +12 dBm, 0.3 dB Steps
Data Rates up to 76.8 kbps
Low Current Consumption
29 mA at +10 dBm at 433.92 MHz
Power-Down Mode (<1 A)
24-Lead TSSOP Package Hooks to External VCO for
< 1.4 GHz Operation
APPLICATIONS
Low Cost Wireless Data Transfer
Wireless Metering
Remote Control/Security Systems
Keyless Entry
GENERAL DESCRIPTION
The ADF7011 is a low power OOK/ASK/FSK/GFSK UHF
transmitter designed for use in ISM band systems. It contains
and integrated VCO and Σ-fractional-N PLL. The output
power, channel spacing, and output frequency are program-
mable with four 24-bit registers. The fractional-N PLL enables
the user to select any channel frequency within the European
433 MHz and 868 MHz bands, allowing the use of the ADF7011
in frequency hopping systems. The fractional-N also allows the
transmitter to operate in the less congested sub-bands of the
868 MHz to 870 MHz SRD band.
It is possible to choose from the four different modulation
schemes: Binary or Gaussian Frequency Shift Keying (FSK/
GFSK), Amplitude Shift Keying (ASK), or On/Off Keying
(OOK). The device also features a crystal compensation register
that can provide ± 1 ppm resolution in the output frequency.
Indirect temperature compensation of the crystal can be accom-
plished inexpensively using this register.
Control of the four on-chip registers is via a simple 3-wire inter-
face. The devices operate with a power supply ranging from
2.3 V to 3.6 V and can be powered down when not in use.
FUNCTIONAL BLOCK DIAGRAM
CREG
OSC1
OSC2
، CLK
CLKOUT CPVDD CPGND
CPOUT
VCOIN
CVCO
VCOGND
OOK/ASK
VDD
DVDD
DGND
TxCLK
TxDATA
LE
DATA
CLK
REV. 0
، R PFD/
CHARGE
PUMP
OOK/ASK
FSK/GFSK
، FRACTIONAL-N
SIGMA-DELTA
SERIAL
INTERFACE
FREQUENCY
COMPENSATION
CENTER
FREQUENCY
CE
ADF7011
AGND
VCO
RFOUT
PA
RFGND
LDO
REGULATOR
CREG
LOCK DETECT
MUXOUT
MUXOUT
RSET
TEST
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no 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. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective companies.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
www.analog.com
Fax: 781/326-8703 © 2003 Analog Devices, Inc. All rights reserved.

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