V

+2.7V, Low-Power, Multichannel,

Serial 8-Bit ADCs

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3

ELECTRICAL CHARACTERISTICS (continued)

Used for data transfer only

(Note 6)

External clock, 2MHz

CONDITIONS

ppm/°C

±50

mA

3.5

REFOUT Short-Circuit Current

pF

18

Input Capacitance

µA

±0.01

±1

Multiplexer Leakage Current

1

2

50

500

kHz

400

Internal Clock Frequency

0mA to 0.5mA output load

mV

2.5

Load Regulation (Note 8)

ns

10

Aperture Delay

µs

1

Track/Hold Acquisition Time

UNITS

MIN

TYP

MAX

SYMBOL

PARAMETER

ps

V

1

50mV

Input Voltage Range

(Note 9)

µA

120

Input Current

<50

Aperture Jitter

External clock, 500kHz, 10 clocks/conversion

20

Internal clock

µs

25

55

Conversion Time (Note 5)

Unipolar input, COM = 0V

COM ±

V

Input Voltage Range, Single-

Ended and Differential (Note 7)

V

1.968

2.048

2.128

REFOUT Voltage

External Clock-Frequency Range

MHz

kHz

Capacitive Bypass at REFOUT

µF

REFOUT Temperature Coefficient

V

2.7

5.5

Supply Voltage

85

250

Supply Current (Note 2)

Full-scale input

2.048V; full-scale input

mV

±0.4

±4

PSR

Power-Supply Rejection

(Note 10)

Operating mode

2

µA

Power-down

3.2

10

Software

SHDN at DGND

Operating mode

120

250

Full-scale input

Reference disabled

Reference disabled

45

80

CONVERSION RATE

ANALOG INPUT

INTERNAL REFERENCE

EXTERNAL REFERENCE AT REFIN

POWER REQUIREMENTS