Low-Power, 8-Channel,

Serial 12-Bit ADCs

4

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ELECTRICAL CHARACTERISTICS (continued)

noted.)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

Internal compensation mode

0

µF

Capacitive Bypass at VREF

External compensation mode

4.7

MAX186

1.678

V/V

MAX188

1.638

MAX186

±50

µA

REFADJ Input Current

MAX188

±5

2.4

V

0.8

V

DIN, SCLK,

CS Input Hysteresis

0.15

V

DIN, SCLK,

CS Input Leakage

±1

µA

(Note 6)

15

pF

SHDN Input High Voltage

V

SHDN Input Low Voltage

0.5

V

SHDN Input Current, High

4.0

µA

SHDN Input Current, Low

SHDN = 0V

-4.0

µA

SHDN Input Mid Voltage

V

SHDN Voltage, Floating

SHDN = open

2.75

V

SHDN = open

-100

100

nA

0.4

Output Voltage Low

0.3

V

Output Voltage High

4

V

Three-State Leakage Current

CS = 5V

±10

µA

Three-State Output Capacitance

CS = 5V (Note 6)

15

pF

Positive Supply Voltage

5 ±5%

V

DIN, SCLK,

CS Input Capacitance

SHDN Max Allowed Leakage,

Mid Input

Negative Supply Voltage

0 or

-5 ±5%

V

Operating mode

1.5

2.5

Fast power-down

30

70

Positive Supply Current

Full power-down

210

Operating mode and fast power-down

50

Negative Supply Current

Full power-down

10

µA

mA

µA

DIN, SCLK,

CS Input Low Voltage

DIN, SCLK,

CS Input High Voltage

1.5

DIGITAL INPUTS (DIN, SCLK,

CS, SHDN)

DIGITAL OUTPUTS (DOUT, SSTRB)

POWER REQUIREMENTS

UNITS

EXTERNAL REFERENCE AT REFADJ

Reference-Buffer Gain