Low-Cost, Triple, 8-Bit Voltage Output DACs

with Serial Interface

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5

-1.5

-5

2

4

SUPPLY CURRENT

vs. REFERENCE VOLTAGE

-1.0

1.0

1.5

REFAB = REFC (V)

0

0

-0.5

-4

-2

3

1

-3

-1

0.5

REFC GROUNDED FOR REF_ < 0

CODE = ALL 1s

1.340

-60

80

120 140

POSITIVE SUPPLY CURRENT

vs. TEMPERATURE

1.345

1.365

1.370

TEMPERATURE (°C)

40

1.355

1.350

-40

0

100

60

-20

20

1.360

ALL LOGIC INPUTS = +5V

ALL DACs SET TO ALL 1s

0

0.5

-60

80

120 140

SHUTDOWN SUPPLY CURRENT

vs. TEMPERATURE

1.0

1.5

4.0

4.5

TEMPERATURE (°C)

40

3.0

2.5

2.0

-40

0

100

60

-20

20

3.5

ALL LOGIC INPUTS = +5V

0.01

10

1

1000

0.1

100

REFERENCE FEEDTHROUGH

vs. FREQUENCY

-100

FREQUENCY (kHz)

-60

-20

-120

-80

-40

0

REF_ FROM 0V TO 2.9V

NO LOAD

CODE = ALL 0s

DAC A, B

DAC C

0.001

1

1000

0.1

100

0.01

10

REFERENCE LARGE-SIGNAL

FREQUENCY RESPONSE

-20

FREQUENCY (kHz)

-10

0

-25

-15

-5

5

REFAB, REFC

100k

10k

1k

0.1k

1M

10M

REFERENCE SMALL-SIGNAL

FREQUENCY RESPONSE

-80

FREQUENCY (Hz)

-40

0

-60

-20

DAC C

DAC A

DAC B

REFAB, REFC

SINE WAVE ±40mV

____________________________Typical Operating Characteristics (continued)