MAX1175ACUI datasheet(3/15 Pages) MAXIM

3 / 15 page

14-Bit, 135ksps, Single-Supply ADCs with

Bipolar Analog Input Range

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ELECTRICAL CHARACTERISTICS (continued)

(AVDD = DVDD = +5V ±5%, external reference = +4.096V, CREF = 10µF, CREFADJ = 0.1µF, VREFADJ = AVDD, TA = TMIN to TMAX,

unless otherwise noted. Typical values are at TA = +25°C.)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

MAX1157,

≤ VAIN ≤ +10V

Normal/shutdown

mode

-0.1

+2.0

Normal operation

-1.8

+1.2

MAX1159,

-10V

≤ VAIN ≤ +10V

Shutdown mode

-1.8

+1.8

Normal operation

-1.8

+0.4

Input Current

IAIN

MAX1175,

-5V

≤ VAIN ≤ +5V

Shutdown mode

-1.8

+1.8

MAX1159, VAIN = +10V, shutdown mode to

operating mode

0.5

0.7

Input Current Step at Power-Up

IPU

MAX1175, VAIN = +5V, shutdown mode to

operating mode

1.4

Input Capacitance

CIN

INTERNAL REFERENCE

REF Output Voltage

VREF

4.056

4.096

4.136

REF Output Tempco

±35

ppm/°C

REF Short-Circuit Current

IREF-SC

±10

EXTERNAL REFERENCE

REF and REFADJ Input Voltage

Range

3.8

4.2

REFADJ Buffer Disable Threshold

AVDD -

0.4

AVDD -

0.1

Normal mode, fSAMPLE = 135ksps

100

REF Input Current

IREF

Shutdown mode (Note 1)

±0.1

±10

µA

REFADJ Input Current

IREFADJ

REFADJ = AVDD

µA

DIGITAL INPUTS/OUTPUTS

Output High Voltage

VOH

ISOURCE = 0.5mA, DVDD = +2.7V to +5.25V,

AVDD = +5.25V

DVDD -

0.4

Output Low Voltage

VOL

ISINK = 1.6mA, DVDD = +2.7V to +5.25V,

AVDD = +5.25V

0.4

Input High Voltage

VIH

0.7

DVDD

Input Low Voltage

VIL

0.3

DVDD

Input Leakage Current

Digital input = DVDD or 0V

-1

µA

Input Hysteresis

VHYST

0.2

Input Capacitance

CIN

Three-State Output Leakage

IOZ

±10

µA

Three-State Output Capacitance

COZ

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