參數(shù)資料
型號(hào)： AD5344BRU
廠商： ANALOG DEVICES INC
元件分類： DAC
英文描述： Dual 12-bit 80MSPS ADC with serialized LVDS output 48-VQFN -40 to 85
中文描述： QUAD, PARALLEL, 8 BITS INPUT LOADING, 8 us SETTLING TIME, 12-BIT DAC, PDSO24
封裝： TSSOP-28
文件頁(yè)數(shù)： 10/20頁(yè)
文件大?。?/td> 359K
代理商： AD5344BRU
REV. 0
AD5330/AD5331/AD5340/AD5341
–10–
OFFSET ERROR DRIFT
This is a measure of the change in Offset Error with changes in
temperature. It is expressed in (ppm of full-scale range)/
°
C.
GAIN ERROR DRIFT
This is a measure of the change in Gain Error with changes in
temperature. It is expressed in (ppm of full-scale range)/
°
C.
POWER-SUPPLY REJECTION RATIO (PSRR)
This indicates how the output of the DAC is affected by changes in
the supply voltage. PSRR is the ratio of the change in V
OUT
to a
change in V
DD
for full-scale output of the DAC. It is measured
in dBs. V
REF
is held at 2 V and V
DD
is varied
±
10%.
REFERENCE FEEDTHROUGH
This is the ratio of the amplitude of the signal at the DAC output
to the reference input when the DAC output is not being updated
(i.e.,
LDAC
is high). It is expressed in dBs.
MAJOR-CODE TRANSITION GLITCH ENERGY
Major-Code Transition Glitch Energy is the energy of the
impulse injected into the analog output when the DAC changes
state. It is normally specified as the area of the glitch in nV secs
and is measured when the digital code is changed by 1 LSB at
the major carry transition (011. . . 11 to 100 . . . 00 or 100 . . . 00
to 011 . . . 11).
DIGITAL FEEDTHROUGH
Digital Feedthrough is a measure of the impulse injected into
the analog output of the DAC from the digital input pins of the
device, but is measured when the DAC is not being written to
(
CS
held high). It is specified in nV secs and is measured with a
full-scale change on the digital input pins, i.e., from all 0s to all
1s and vice versa.
MULTIPLYING BANDWIDTH
The amplifiers within the DAC have a finite bandwidth. The
Multiplying Bandwidth is a measure of this. A sine wave on the
reference (with full-scale code loaded to the DAC) appears on
the output. The Multiplying Bandwidth is the frequency at which
the output amplitude falls to 3 dB below the input.
TOTAL HARMONIC DISTORTION
This is the difference between an ideal sine wave and its attenuated
version using the DAC. The sine wave is used as the reference
for the DAC and the THD is a measure of the harmonics present
on the DAC output. It is measured in dBs.
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