AD9955 Datasheet PDF - Analog Devices

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AD9955
Analog Devices

Part Number AD9955
Description 85Mhz Direct Digital Synthesizer
Page 12 Pages

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85 MHzDirect
W DEVICES
DigitaSl ynthesizer
FEATURES
100 MHz Typical/8S MHz Minimum Clock Rate
32-Bit Phase Accumulator
12-Bit Sine Output
>90 dB Spurious Free Dynamic Range
Continuous Frequency Update
On-Board Data Ready Signal
APPLICATIONS
Frequency Synthesizers
DDS Tuning
Digital Demodulation
FM Modulators
AD9955
I
GENERAL DESCRIPTION
The AD99SS is a 100 MHz direct digital synthesizer for fre-
quency synthesis applications. It comprises a 32-bit phase accu-
mulator and a IS-bit phase-to-12-bit sine amplitude converter.
The control logic is CMOS compatible, and the clock input is
TTL. CMOS outputs are latched on board, and a data ready
signal is provided.
Designed for applications in communications, instrumentation,
and military systems, the AD99SS can be combined with a clock
reference and a DAC such as the AD97l3B or AD9721 to form
a digitally-controlled analog frequency reference.
The AD99SS is available in an SO-leadplastic quad flatpack
(PQFP) for commercial (O°Cto + 70°C) temperature range appli-
cations. Contact the factory for information concerning the avail-
ability of a military temperature range device.
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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
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
One Technology Way, P.O.Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329.4700
Fax: 617/326-8703
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AD9955 datasheet pdf
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