MAX148 datasheet(6/24 Pages) MAXIM

6 / 24 page

+2.7V to +5.25V, Low-Power, 8-Channel,

Serial 10-Bit ADCs

_______________________________________________________________________________________

2.00

0.50

2.25

2.75

SUPPLY CURRENT

vs. SUPPLY VOLTAGE

1.75

1.25

1.50

1.00

0.75

SUPPLY VOLTAGE (V)

3.75

5.25

3.25

4.25

4.75

RL = ∞

CODE = 1010101000

CLOAD = 50pF

MAX148

MAX149

CLOAD = 20pF

2.25

2.75

SHUTDOWN SUPPLY CURRENT

vs. SUPPLY VOLTAGE

3.0

2.5

1.5

2.0

1.0

0.5

SUPPLY VOLTAGE (V)

3.75

5.25

3.25

4.25

4.75

FULL POWER-DOWN

2.5020

2.4990

2.25

2.75

MAX149

INTERNAL REFERENCE VOLTAGE

vs. SUPPLY VOLTAGE

2.5015

2.5005

2.5010

2.5000

2.4995

SUPPLY VOLTAGE (V)

3.75

5.25

3.25

4.25

4.75

0.8

0.9

1.0

1.1

1.2

1.3

-60

-20

100

140

SUPPLY CURRENT vs. TEMPERATURE

TEMPERATURE (°C)

MAX148

MAX149

RLOAD = ∞

CODE = 1010101000

0.4

0.8

1.2

1.6

2.0

-60

-20

100

140

SHUTDOWN CURRENT

vs. TEMPERATURE

TEMPERATURE (°C)

2.494

2.495

2.496

2.497

2.498

2.499

2.500

2.501

-60

-20

100

140

MAX149

INTERNAL REFERENCE VOLTAGE

vs. TEMPERATURE

TEMPERATURE (°C)

VDD = 2.7V

VDD = 3.6V

VDD = 5.25V

____________________________Typical Operating Characteristics (continued)

(VDD = 3.0V, VREF = 2.500V, fSCLK = 2.0MHz, CLOAD = 20pF, TA = +25°C, unless otherwise noted.)

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