PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Maximum REFP/REFN/COM Sink

Current

2mA

REFIN Input Resistance

>500

k

Ω

REFIN Input Current

-0.7

µA

REFP Input Voltage

0.256

V

REFN Input Voltage

-0.256

V

COM Input Voltage

V

Differential Reference Input

Voltage

0.512

V

REFP Input Resistance

Measured between REFP and COM

4

k

Ω

REFN Input Resistance

Measured between REFN and COM

4

k

Ω

DIGITAL INPUTS (CLK, PD0, PD1)

CLK

0.7 x

Input High Threshold

PD0, PD1

0.7 x

V

CLK

0.3 x

Input Low Threshold

PD0, PD1

0.3 x

V

Input Hysteresis

0.1

V

±5

Digital Input Leakage Current

±5

µA

Digital Input Capacitance

5pF

DIGITAL OUTPUTS (D7–D0, A/

B)

Output Voltage Low

0.2 x

V

Output Voltage High

0.8 x

V

Tri-State Leakage Current

±5

µA

Tri-State Output Capacitance

5pF

Ultra-Low-Power, 22Msps, Dual 8-Bit ADC

4

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ELECTRICAL CHARACTERISTICS (continued)