參數(shù)資料
型號: AD9761
廠商: Analog Devices, Inc.
英文描述: Dual 10-Bit TxDAC with 23 Interpolation Filters(內(nèi)插濾波器的雙10位D/A轉(zhuǎn)換器)
中文描述: 雙10與23位插值濾波器TxDAC系列(內(nèi)插濾波器的雙10位的D / A轉(zhuǎn)換器)
文件頁數(shù): 7/24頁
文件大?。?/td> 294K
代理商: AD9761
AD9761
–7–
REV. 0
DE FINIT IONS OF SPE CIFICAT IONS
Linearity E rror (Also Called Integral Nonlinearity or INL)
L inearity error is defined as the maximum deviation of the
actual analog output from the ideal output, determined by a
straight line drawn from zero to full scale.
Differential Nonlinearity (or DNL)
DNL is the measure of the variation in analog value, normalized
to full scale, associated with a 1 LSB change in digital input
code.
Monotonicity
A D/A converter is monotonic if the output either increases or
remains constant as the digital input increases.
Offset E rror
T he deviation of the output current from the ideal of zero is
called offset error. For IOUT A, 0 mA output is expected when
the inputs are all 0s. For IOUT B, 0 mA output is expected
when all inputs are set to 1s.
Gain E rror
T he difference between the actual and ideal output span. T he
actual span is determined by the output when all inputs are set
to 1s minus the output when all inputs are set to 0s.
Output Compliance Range
T he range of allowable voltage at the output of a current-output
DAC. Operation beyond the maximum compliance limits may
cause either output stage saturation or breakdown, resulting in
nonlinear performance.
T emperature Drift
T emperature drift is specified as the maximum change from the
ambient (+25
°
C) value to the value at either T
MIN
or T
MAX
. For
offset and gain drift, the drift is reported in ppm of full-scale
range (FSR) per degree C. For reference drift, the drift is re-
ported in ppm per degree C.
Power Supply Rejection
T he maximum change in the full-scale output as the supplies
are varied from nominal to minimum and maximum specified
voltages.
Settling T ime
T he time required for the output to reach and remain within a
specified error band about its final value, measured from the
start of the output transition.
Glitch Impulse
Asymmetrical switching times in a DAC give rise to undesired
output transients that are quantified by a glitch impulse. It is
specified the net area of the glitch in pV-s.
Channel Isolation
Channel Isolation is a measure of the level of crosstalk between
channels. It is measured by producing a full-scale 8 MHz signal
output for one channel and measuring the leakage into the other
channel.
Spurious-Free Dynamic Range
T he difference, in dB, between the rms amplitude of the output
signal and the peak spurious signal over the specified bandwidth.
T otal Harmonic Distortion
T HD is the ratio of the sum of the rms value of the first six
harmonic components to the rms value of the measured output
signal. It is expressed as a percentage or in decibels (dB).
Signal-to-Noise and Distortion (S/N+D, SINAD) Ratio
S/N+D is the ratio of the rms value of the measured output
signal to the rms sum of all other spectral components below the
Nyquist frequency, including harmonics but excluding dc. T he
value for S/N+D is expressed in decibels.
E ffective Number of Bits (E NOB)
For a sine wave, SINAD can be expressed in terms of the num-
ber of bits. Using the following formula,
N
= (
SINAD
– 1.76/6.02
it is possible to get a measure of performance expressed as
N
,
the effective number of bits.
T hus, effective number of bits for a device for sine wave inputs
at a given input frequency can be calculated directly from its
measured SINAD.
Passband
Frequency band in which any input applied therein passes
unattenuated to the DAC output.
Stopband Rejection
T he amount of attenuation of a frequency outside the passband
applied to the DAC, relative to a full-scale signal applied at the
DAC input within the passband.
Group Delay
Number of input clocks between an impulse applied at the
device input and peak DAC output current.
Impulse Response
Response of the device to an impulse applied to the input.
相關(guān)PDF資料
PDF描述
AD9762 Analog Devices: Data Converters: DAC 12-Bit, 10 ns to 100 ns Converters Selection Table
AD9762-EB 12-Bit, 125 MSPS TxDAC D/A Converter
AD9762AR 12-Bit, 125 MSPS TxDAC D/A Converter
AD9762ARU 12-Bit, 125 MSPS TxDAC D/A Converter
AD9765 Analog Devices: Data Converters: DAC 12-Bit, 10 ns to 100 ns Converters Selection Table
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