MAX1321 datasheet(4/27 Pages) MAXIM

4 / 27 page

8-/4-/2-Channel, 14-Bit, Simultaneous-Sampling ADCs

with ±10V, ±5V, and 0 to +5V Analog Input Ranges

_______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

(VAVDD = +5V, VDVDD = +3V, VAGND = VDGND = 0, VREF = VREFMS = +2.5V (external reference), CREF = CREFMS = 0.1µF, CREF+ =

CREF- = 0.1µF, CREF+-to-REF- = 2.2µF || 0.1µF, CCOM = 2.2µF || 0.1µF, CMSV = 2.2µF || 0.1µF (unipolar devices, MAX1316/

MAX1317/MAX1318), MSV = AGND (bipolar devices, MAX1320/MAX1321/MAX1322/MAX1324/MAX1325/MAX1326), fCLK = 10MHz,

50% duty cycle, INTCLK/EXTCLK = AGND (external clock), SHDN = DGND, TA = TMIN to TMAX, unless otherwise noted. Typical val-

ues are at TA = +25°C.)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Input-Voltage Low

VIL

0.3 x

DVDD

Input Hysteresis

Input Capacitance

CIN

Input Current

IIN

VIN = 0V or DVDD

±1µA

CLOCK-SELECT INPUT (INTCLK/

EXTCLK)

Input-Voltage High

0.7 x

AVDD

Input-Voltage Low

0.3 x

AVDD

DIGITAL OUTPUTS (D0–D13,

EOC, EOLC)

Output-Voltage High

VOH

ISOURCE = 0.8mA

DVDD -

0.6

Output-Voltage Low

VOL

ISINK = 1.6mA

0.4

Tri-State Leakage Current

≥ VIH or CS ≥ VIH

0.06

µA

Tri-State Output Capacitance

≥ VIH or CS ≥ VIH

POWER SUPPLIES

Analog-Supply Voltage

AVDD

4.75

5.25

Digital-Supply Voltage

DVDD

2.70

5.25

Analog-Supply Current

IAVDD

All channels selected

Digital-Supply Current

IDVDD

CLOAD = 100pF, all channels selected

(Note 6)

1.6

IAVDD

VSHDN = DVDD, VCH = float

Shutdown Current (Note 7)

IDVDD

VRD = VWR = DVDD, VSHDN = DVDD

0.1

µA

Power-Supply Rejection Ratio

PSRR

AVDD = +4.75V to +5.75V (Note 8)

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