ADUCM331WFS datasheet(7/17 Pages) AD

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Data Sheet

ADuCM330WFS/ADuCM331WFS

Rev. A | Page 7 of 17

TA = −40°C to +115°C

TA = +115°C to +125°C1

Parameter

Test Conditions/Comments

Min

Typ

Max

Min

Typ

Max

Unit

VOLTAGE REFERENCE

Internal Reference

1.2

Power-Up Time1

0.5

Initial Accuracy1

Measured at TA = 25°C

−0.15

+0.15

Temperature

Coefficient1,16

−20

±5

+20

±8

ppm/°C

Long-Term Stability17

100

ppm/

1000 Hr

RESISTIVE ATTENUATOR

Divider Ratio

Resistor Mismatch Drift

Implicit in the voltage channel gain error

specification

±3

ppm/°C

ADC GROUND SWITCH

Resistor to Ground

kΩ

TEMPERATURE SENSOR1,18

Processor in hibernate mode

Accuracy

TA = 115°C to 125°C

−3.5

±1

+3.5

±1

°C

TA = −40°C to +115°C

−3

±1

°C

TA = −25°C to +85°C

−2.5

±0.5

+2.5

°C

TA = −10°C to +55°C

−2

±0.5

°C

ADC DIAGNOSTICS1

AVDD18/136

Accuracy2,19

At any gain setting

Current Channel

Diagnostic Current

µA

Diagnostic Current

Matching

−5

±0.5

µA

Internal Electrostatic

Discharge (ESD)

Resistor Matching

−120

+120

Voltage Channel

Input Test Voltage

(VBE)

525

700

875

Voltage Attenuator

Current Source

Accuracy

Differential voltage increase on the

attenuator when current is on

2.4

3.2

2.8

Diagnostic Attenuator

Divider Ratio

POWER-ON RESET (POR)1

Refers to voltage at the VDD pin

POR Trip Level

2.8

3.1

3.4

3.3

POR Hysteresis

0.1

LOW VOLTAGE FLAG

Low Voltage Flag Level

Refers to voltage at the VDD pin

2.6

2.75

3.00

WATCHDOG TIMER

Shortest Timeout

Period

32,768 Hz clock with a prescaler of 1

30.5

µs

Longest Timeout

Period

32,768 Hz clock with a prescaler of 4096

8192

sec

SRAM SIZE

ADUCM331WFS Datasheet(PDF) 7 Page - Analog Devices

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