Datasheet

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SBAS279D − AUGUST 2003 − REVISED JULY 2005
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5
ELECTRICAL CHARACTERISTICS: V-DAC
At T
A
= T
MIN
to T
MAX
(typical values are at T
A
= 25°C), +V
AV
= +3V, +V
DV
= +3V, R
L
= 2kΩ to GND, and C
L
= 40pF, unless otherwise noted.
DAC2932
PARAMETER TEST CONDITIONS
MIN TYP MAX
UNITS
Static Performance
(1)
Resolution 12 Bits
Relative accuracy At 25°C −16 ±8 +16 LSB
Differential nonlinearity, DNL Tested; monotonic by design −1 ±0.2 +1 LSB
Zero code error
(2)
All 0s loaded to DAC register 0.2 +0.8 %FSR
Full-scale error
(2)
All 1s loaded to DAC register −10 −3 +2 %FSR
Zero code error drift 5 μV/°C
Full-scale error drift −15 ppmFSR/°C
Output Characteristics
(3)
Reference voltage setting, REFV 0 +V
AV
V
Output voltage settling time 1/4 scale to 3/4 scale change (400h to C00h) 3 μs
C
L
= 470pF 5 μs
Slew rate 1 V/μs
Capacitive load stability R
L
= 2kΩ 470 pF
Code change glitch impulse 1LSB change around major carry 11 nV-s
Digital feedthrough 0.5 nV-s
DC output impedance 4 Ω
Short-circuit current 20 mA
Power-up time Coming out of power-down mode 8 μs
Logic Inputs
(3)
Input current ±1 μA
Input low voltage, V
IL
0 0.8 V
Input high voltage, V
IH
2 3 V
Input capacitance 5 pF
(1)
Linearity calculated using a reduced code range of 48 to 3976.
(2)
Full-scale range (FSR) based on reference REFV = +V
AV
= +3.0V.
(3)
Ensured by design and characterization; not production tested.