AD9951 Datasheet PDF - Analog Devices
| Part Number | AD9951 | |
| Description | CMOS Direct Digital Synthesize | |
| Manufacturers | Analog Devices | |
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Data Sheet
400 MSPS 14-Bit, 1.8 V CMOS
Direct Digital Synthesize
AD9951
FEATURES
Phase-locked loop (PLL) REFCLK multiplier (4× to 20×)
400 MSPS internal clock speed
Integrated 14-bit digital-to-analog converter (DAC)
32-bit tuning word
Internal oscillator; can be driven by a single crystal
Phase modulation capability
Multichip synchronization
Phase noise ≤ −120 dBc/Hz at 1 kHz offset (DAC output)
Excellent dynamic performance
>80 dB SFDR at 160 MHz (±100 kHz offset) AOUT
Serial I/O control
1.8 V power supply
Software and hardware controlled power down
APPLICATIONS
Agile local oscillator (LO) frequency synthesis
Programmable clock generators
Test and measurement equipment
Acousto-optic device drivers
48-lead TQFP/EP package
Support for 5 V input levels on most digital inputs
FUNCTIONAL BLOCK DIAGRAM
DDS CORE
PHASE
ACCUMULATOR
Z–1
32
PHASE
OFFSET
19
COS(X)
AD9951
14 DAC
14
SYSTEM
CLOCK
Z–1
DAC_RSET
IOUT
IOUT
32 14
I/O UPDATE
SYNC_CLK
REFCLK
REFCLK
0
M
U
X
SYNC
OSCILLATOR/BUFFER
ENABLE
4× TO 20×
CLOCK
MULTIPLIER
TIMING AND CONTROL LOGIC
÷ 4 CONTROL REGISTERS
M
U
X
SYSTEM
CLOCK
SYNC_IN
OSK
PWRDWNCTL
CRYSTAL OUT
I/O PORT
Figure 1.
RESET
Rev. B
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Tel: 781.329.4700 ©2003–2016 Analog Devices, Inc. All rights reserved.
Technical Support
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Data Sheet
GENERAL DESCRIPTION
The AD9951 is a direct digital synthesizer (DDS) featuring a
14-bit DAC operating up to 400 MSPS. The AD9951 uses
advanced DDS technology, coupled with an internal high speed,
high performance DAC to form a digitally programmable,
complete high frequency synthesizer capable of generating a
frequency-agile analog output sinusoidal waveform at up to
200 MHz. The AD9951 is designed to provide fast frequency
AD9951
hopping and fine tuning resolution (32-bit frequency tuning
word). The frequency tuning and control words are loaded into
the AD9951 via a serial I/O port.
The AD9951 is specified to operate over the extended industrial
temperature range of −40°C to +105°C.
Rev. B | Page 3 of 28
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for AD9951 electronic component. |
| Information | Total 30 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ AD9951.PDF Datasheet ] | |
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