DAC7731

3

SBAS249B

www.ti.com

DAC7731E

DAC7731EB

DAC7731EC

PARAMETER

CONDITIONS

MIN

TYP

MAX

MIN

TYP

MAX

MIN

TYP

MAX

UNITS

ACCURACY

Linearity Error (INL)

±6

±4

±3LSB

TA = 25°C

±5

±3

±2LSB

Differential Linearity Error (DNL)

±4

±2

±1LSB

Monotonicity

14

15

16

Bits

Offset Error

±0.1

✻✻

% of FSR

Offset Error Drift

±2

✻✻

ppm/

°C

Gain Error

With Internal REF

±0.4

±0.25

±0.15

% of FSR

With External REF

±0.25

±0.1

✻

% of FSR

Gain Error Drift

With Internal REF

±15

±10

±7

ppm/

°C

PSRR (VCC or VSS)

At Full-Scale

50

200

✻✻

✻

✻

ppm/V

ANALOG OUTPUT(1)

Voltage Output(2)

+11.4/–4.75

0 to 10

✻✻

V

+11.4/–11.4

±10

✻✻

V

+11.4/–6.4

±5

✻✻

V

Output Current

±5

✻✻

mA

Output Impeadance

0.1

✻✻

Ω

Maximum Load Capacitance

200

✻✻

pF

Short-Circuit Current

±15

✻✻

mA

Short-Circuit Duration

AGND

Indefinite

✻✻

REFERENCE

Reference Output

9.96

10

10.04

9.975

✻

10.025

✻✻

✻

V

REFOUT Impedance

400

✻✻

Ω

REFOUT Voltage Drift

±15

±10

±7

ppm/

°C

REFOUT Voltage Adjustment(3)

±25

✻✻

mV

REFIN Input Range(4)

4.75

VCC – 1.4

✻✻

✻

✻

V

REFIN Input Current

10

✻✻

nA

REFADJ Input Range

Absolute Max Value that

010

✻✻

✻

✻

V

can be applied is VCC

REFADJ Input Impedance

50

✻✻

k

Ω

VREF Output Current

–2+2

✻✻

✻

✻

mA

VREF Impedance

1

✻✻

Ω

DYNAMIC PERFORMANCE

Settling Time to

±0.003%

20V Output Step

3

5

✻✻

✻

✻

µs

RL = 5kΩ, CL = 200pF,

with external REFOUT

to REFIN filter(5)

Digital Feedthrough

2

✻✻

nV-s

Output Noise Voltage

at 10kHz

100

✻✻

nV/

√Hz

DIGITAL INPUT

VIH

|IH| < 10µA

0.7 • VDD

✻✻

V

VIL

|IL| < 10µA

0.3 • VDD

✻✻

V

DIGITAL OUTPUT

VOH

IOH = –0.8mA

3.6

✻✻

V

VOL

IOL = 1.6mA

0.4

✻✻

V

POWER SUPPLY

VDD

+4.75

+5.0

+5.25

✻✻✻

✻✻

✻

V

VCC

+11.4

+15.75

✻✻

✻

✻

V

VSS

Bipolar Operation

–15.75

–11.4

✻✻

✻

✻

V

Unipolar Opeation

–15.75

–4.75

✻✻

✻

✻

V

IDD

100

✻✻

µA

ICC

Unloaded

4

6

✻✻

✻

✻

mA

ISS

Unloaded

–4

–2.5

✻✻

✻✻

mA

Power

No Load, Ext. Reference

85

✻✻

mW

No Load, Int. Reference

100

150

✻✻

✻

✻

mW

TEMPERATURE RANGE

Specified Performance

–40

+85

✻✻

✻

✻

°C

✻ Specifications same as grade to the left.

NOTES: (1) With minimum VCC/VSS requirements, internal reference enabled.

(2) Please refer to the

Theory of Operation section for more information with respect to output voltage configurations.

(3) See Figure 11 for gain and offset adjustment connection diagrams when using the internal reference.

(4) The minimum value for REFIN must be equal to the greater of VSS +14V and +4.75V, where +4.75V is the minimum voltage allowed.

(5) Reference low-pass filter values: 100k

Ω, 1.0µF (see Figure 14).

ELECTRICAL CHARACTERISTICS

All specifications at TA = TMIN to TMAX, VCC = +15V, VSS = –15V, VDD = +5V, Internal refi⁄ence enabled, unless otherwise noted.