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| 型號(hào)： | EVAL-AD5421SDZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 13/36頁 |
| 文件大?。?/td> | 0K |
| 描述： | BOARD EVAL FOR AD5421 |
| 標(biāo)準(zhǔn)包裝： | 1 |
| DAC 的數(shù)量： | 1 |
| 位數(shù)： | 16 |
| 數(shù)據(jù)接口： | 串行，SPI? |
| 設(shè)置時(shí)間： | 50µs |
| DAC 型： | 電壓 |
| 工作溫度： | -40°C ~ 105°C |
| 已供物品： | 板 |
| 已用 IC / 零件： | AD5421 |
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AD5421
Data Sheet
Rev. G | Page 20 of 36
TERMINOLOGY
Total Unadjusted Error
Total unadjusted error (TUE) is a measure of the total output
error. TUE consists of INL error, offset error, gain error, and
output drift over temperature, in the case of maximum TUE.
TUE is expressed in % FSR.
Relative Accuracy or Integral Nonlinearity (INL) Error
Relative accuracy, or integral nonlinearity (INL) error, is a
measure of the maximum deviation in the output current from
a straight line passing through the endpoints of the transfer
function. INL error is expressed in % FSR.
Differential Nonlinearity (DNL) Error
Differential nonlinearity (DNL) error is the difference between
the measured change and the ideal 1 LSB change between any
two adjacent codes. A specified differential nonlinearity of
±1 LSB maximum ensures monotonicity.
Offset Error
Offset error is a measure of the output error when zero code is
loaded to the DAC register and is expressed in % FSR.
Offset Error Temperature Coefficient (TC)
Offset error TC is a measure of the change in offset error with
changes in temperature and is expressed in ppm FSR/°C.
Gain Error
Gain error is a measure of the span error of the DAC. It is the
deviation in slope of the DAC transfer function from the ideal
and is expressed in % FSR.
Gain Error Temperature Coefficient (TC)
Gain error TC is a measure of the change in gain error with
changes in temperature and is expressed in ppm FSR/°C.
Full-Scale Error
Full-scale error is a measure of the output error when full-scale
code is loaded to the DAC register and is expressed in % FSR.
Full-Scale Error Temperature Coefficient (TC)
Full-scale error TC is a measure of the change in full-scale error
with changes in temperature and is expressed in ppm FSR/°C.
Loop Compliance Voltage Headroom
Loop compliance voltage headroom is the minimum voltage
between the LOOP and REGIN pins for which the output
current is equal to the programmed value.
Output Temperature Coefficient (TC)
Output TC is a measure of the change in the output current
at 12 mA with changes in temperature and is expressed in
ppm FSR/°C.
Voltage Reference Thermal Hysteresis
Voltage reference thermal hysteresis is the difference in output
voltage measured at +25°C compared to the output voltage
measured at +25°C after cycling the temperature from +25°C to
40°C to +105°C and back to +25°C. The hysteresis is specified
for the first and second temperature cycles and is expressed in mV.
Voltage Reference Temperature Coefficient (TC)
Voltage reference TC is a measure of the change in the reference
output voltage with a change in temperature. The voltage refer-
ence TC is calculated using the box method, which defines the
TC as the maximum change in the reference output voltage over
a given temperature range. Voltage reference TC is expressed in
ppm/°C as follows:
6
10
×
×
=
Temp_Range
V
TC
REF_NOM
REF_MIN
REF_MAX
where:
VREF_MAX is the maximum reference output voltage measured
over the total temperature range.
VREF_MIN is the minimum reference output voltage measured
over the total temperature range.
VREF_NOM is the nominal reference output voltage, 2.5 V.
Temp_Range is the specified temperature range
(40°C to +105°C).
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