AD9953(RevB) Ver la hoja de datos (PDF) - Analog Devices
Número de pieza
componentes Descripción
Fabricante
AD9953 Datasheet PDF : 32 Pages
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Data Sheet
FEATURES
400 MSPS internal clock speed
Integrated 14-bit DAC
32-bit tuning word
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 input/output (I/O) control
1.8 V power supply
Software and hardware controlled power-down
48-lead TQFP/EP package
400 MSPS, 14-Bit, 1.8 V CMOS
Direct Digital Synthesizer
AD9953
PLL REFCLK multiplier (4× to 20×)
Internal oscillator, can be driven by a single crystal
Phase modulation capability
Multichip synchronization
APPLICATIONS
Agile VHF/UHF LO frequency synthesis
FM chirp source for radar and scanning systems
Nonlinear-shaped PSK/FSK modulator
Test and measurement equipment
I/O UPDATE
SYNC_CLK
REFCLK
REFCLK
FUNCTIONAL BLOCK DIAGRAM
RAM
1024 32
STATIC RAM
DATA
32
M
U
X
DDS CORE
PHASE
ACCUMULATOR
Z–1
PHASE
OFFSET
19
COS(X)
AD9953
14
DAC
Z–1
32
3 32
10
M
0
U
X
SYNC
OSCILLATOR/BUFFER
ENABLE
4–20
CLOCK
MULTIPLIER
MUX
14
14
RAM DATA <31:18>
TIMING AND CONTROL LOGIC
PHASE
OFFSET
WORD
÷4
CONTROL REGISTERS
M
U
X
SYSTEM
CLOCK
SYSTEM
14
CLOCK
DAC_RSET
IOUT
IOUT
SYNC_IN
OSK
PWRDWNCTL
CRYSTAL OUT
PS<1:0> I/O PORT
Figure 1.
RESET
Rev. B
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