Low-Power, 16-Bit Analog-to-Digital Converter

with Parallel Interface

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3

ELECTRICAL CHARACTERISTICS (continued)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

INTERNAL REFERENCE

REF Output Voltage

4.056

4.096

4.136

V

REF Output Tempco

±25

ppm/°C

REF Short-Circuit Current

±10

mA

Capacitive Bypass at REFADJ

0.1

µF

Capacitive Bypass at REF

1µF

REFADJ Input Leakage Current

20

µA

EXTERNAL REFERENCE

REFADJ Buffer Disable Threshold

To power down the internal reference

0.4

0.1

V

REF Input Voltage Range

Internal reference disabled

3.8

V

50

120

REF Input Current

Shutdown mode

±0.1

µA

DIGITAL INPUTS/OUTPUTS

Input High Voltage

0.7

×

V

Input Low Voltage

0.3

×

V

Input Leakage Current

±0.1

±1

µA

Input Hysteresis

0.1

V

Input Capacitance

15

pF

Output High Voltage

0.4

V

Output Low Voltage

0.4

V

Three-State Leakage Current

D0–D15

±0.1

±10

µA

Three-State Output Capacitance

15

pF

POWER REQUIREMENTS

Analog Supply Voltage

4.75

5.25

V

Digital Supply

2.7

V

165ksps

2.7

3.2

100ksps

2.0

10ksps

1.0

Internal reference

1ksps

1.0

165ksps

1.8

2.3

100ksps

1.1

10ksps

0.1

Analog Supply Current

External reference

1ksps

0.01

mA