DAC2932

SBAS279D − AUGUST 2003 − REVISED JULY 2005

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5

ELECTRICAL CHARACTERISTICS: V-DAC

At TA = TMIN to TMAX (typical values are at TA = 25°C), +VAV = +3V, +VDV = +3V, RL = 2kΩ to GND, and CL = 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

+VAV

V

Output voltage settling time

1/4 scale to 3/4 scale change (400h to C00h)

3

μs

CL = 470pF

5

μs

Slew rate

1

V/μs

Capacitive load stability

RL = 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, VIL

0

0.8

V

Input high voltage, VIH

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 = +VAV = +3.0V.

(3) Ensured by design and characterization; not production tested.