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DAC104S085CISDX Arkusz danych(PDF) 7 Page - Texas Instruments

Numer części DAC104S085CISDX
Szczegółowy opis  10-Bit Micro Power QUAD Digital-to-Analog Converter with Rail-to-Rail Output
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Strona internetowa  http://www.ti.com
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DAC104S085CISDX Arkusz danych(HTML) 7 Page - Texas Instruments

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DAC104S085
www.ti.com
SNAS362E – MAY 2006 – REVISED OCTOBER 2012
A.C. and Timing Characteristics (continued)
Values shown in this table are design targets and are subject to change before product release.
The following specifications apply for VA = +2.7V to +5.5V, VREFIN = VA, CL = 200 pF to GND, fSCLK = 30 MHz, input code
range 12 to 1011. Boldface limits apply for TMIN ≤ TA ≤ TMAX and all other limits are at TA = 25°C, unless otherwise
specified.
Units
Symbol
Parameter
Conductions
Typical(1)
Limits(1)
(Limits)
tCL
SCLK Low Time
7
10
ns (min)
SYNC Set-up Time prior to SCLK
tSS
4
10
ns (min)
Falling Edge
Data Set-Up Time prior to SCLK Falling
tDS
1.5
3.5
ns (min)
Edge
Data Hold Time after SCLK Falling
tDH
1.5
3.5
ns (min)
Edge
tCFSR
SCLK fall prior to rise of SYNC
0
3
ns (min)
tSYNC
SYNC High Time
6
10
ns (min)
Specification Definitions
DIFFERENTIAL NON-LINEARITY (DNL) is the measure of the maximum deviation from the ideal step size of 1
LSB, which is VREF / 1024 = VA / 1024.
DAC-to-DAC CROSSTALK is the glitch impulse transferred to a DAC output in response to a full-scale change
in the output of another DAC.
DIGITAL CROSSTALK is the glitch impulse transferred to a DAC output at mid-scale in response to a full-scale
change in the input register of another DAC.
DIGITAL FEEDTHROUGH is a measure of the energy injected into the analog output of the DAC from the digital
inputs when the DAC outputs are not updated. It is measured with a full-scale code change on the data
bus.
FULL-SCALE ERROR is the difference between the actual output voltage with a full scale code (3FFh) loaded
into the DAC and the value of VA x 1023 / 1024.
GAIN ERROR is the deviation from the ideal slope of the transfer function. It can be calculated from Zero and
Full-Scale Errors as GE = FSE - ZE, where GE is Gain error, FSE is Full-Scale Error and ZE is Zero Error.
GLITCH IMPULSE is the energy injected into the analog output when the input code to the DAC register
changes. It is specified as the area of the glitch in nanovolt-seconds.
INTEGRAL NON-LINEARITY (INL) is a measure of the deviation of each individual code from a straight line
through the input to output transfer function. The deviation of any given code from this straight line is
measured from the center of that code value. The end point method is used. INL for this product is
specified over a limited range, per the Electrical Tables.
LEAST SIGNIFICANT BIT (LSB) is the bit that has the smallest value or weight of all bits in a word. This value is
LSB = VREF / 2
n
where
where VREF is the supply voltage for this product, and "n" is the DAC resolution in bits, which is 10 for
the DAC104S085.
(1)
MAXIMUM LOAD CAPACITANCE is the maximum capacitance that can be driven by the DAC with output
stability maintained.
MONOTONICITY is the condition of being monotonic, where the DAC has an output that never decreases when
the input code increases.
MOST SIGNIFICANT BIT (MSB) is the bit that has the largest value or weight of all bits in a word. Its value is
1/2 of VA.
MULTIPLYING BANDWIDTH is the frequency at which the output amplitude falls 3dB below the input sine wave
Copyright © 2006–2012, Texas Instruments Incorporated
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