Quad/Octal, 2-Wire Serial 8-Bit DACs

with Rail-to-Rail Outputs

_______________________________________________________________________________________

7

12

0

-60

-20

60

140

MAX521

SUPPLY CURRENT vs. TEMPERATURE

2

8

10

TEMPERATURE (°C)

20

100

6

4

ALL REF INPUTS = 0.6V

ALL DAC CODES FF HEX

ALL DAC CODES 00 HEX

6

0

-60

-20

60

140

MAX521

SHUTDOWN SUPPLY CURRENT

vs. TEMPERATURE

1

4

5

TEMPERATURE (°C)

20

100

3

2

ALL REF INPUTS = 0.6V

10

0

01

3

5

MAX521

SUPPLY CURRENT

vs. REFERENCE VOLTAGE

2

6

8

REFERENCE VOLTAGE (V)

24

4

ALL REFERENCE

INPUTS DRIVEN

ALL DAC CODES = FF HEX

ALL DAC CODES = 00 HEX

1.0

0

02

6

10

12

14

16

MAX521

DAC OUTPUT HIGH VOLTAGE

vs. OUTPUT SOURCE CURRENT

0.2

0.8

OUTPUT SOURCE CURRENT (mA)

48

0.6

0.4

DAC CODE = FF HEX

LOAD to AGND

1.0

0

02

6

10

MAX521

DAC OUTPUT LOW VOLTAGE

vs. OUTPUT SINK CURRENT

0.2

0.8

OUTPUT SINK CURRENT (mA)

48

0.6

0.4

DAC CODE = 00 HEX

0

1k

100k

10k

1M

10M

MAX521

REFERENCE VOLTAGE INPUT

FREQUENCY RESPONSE

-16

-18

FREQUENCY (Hz)

-14

-12

-10

-8

-6

-4

-2

2

CENTERED AT 2.5V

__________________________________________Typical Operating Characteristics

OUT1 LOADED WITH 10k

Ω II 100pF, REF1 = 4V,

DAC CODE = 00 HEX to FF HEX

1

µs/div

MAX521

POSITIVE SETTLING TIME

OUT1

1V/div

OUT1 LOADED WITH 10k

Ω II 100pF, REF1 = 4V,

DAC CODE = FF HEX to 00 HEX

1

µs/div

MAX521

NEGATIVE SETTLING TIME

OUT1

1V/div