AMC7823IRTAT datasheet(7/55 Pages) TI

7 / 55 page

AMC7823

www.ti.com

SLAS453F – APRIL 2005 – REVISED MARCH 2012

ELECTRICAL CHARACTERISTICS: +3V (continued)

At –40°C to +85°C, AVDD, DVDD, BVDD = 3V, using external 1.25V reference, unless otherwise noted.

AMC7823

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

PRECISION CURRENT SOURCE

Output current range

0.01

Output current accuracy

Iout = 100μA

99.5

100.0

100.5

μA

Output current drift

Iout = 100μA

ppm/°C

Output impedance

Iout = 100μA

100

Ω

Compliance voltage of pin

AVDD = 2.7V, Iout = 10mA

1.9

PRECISION_I_OUTPUT

Power-supply rejection ratio

VOLTAGE REFERENCE (VREF)

Internal reference voltage(5)

At +25°C

1.247

1.25

1.253

Internal reference drift

–40°C to +85°C

±20

ppm/°C

Output impedance of pin EXT_REF_IN

Ω

as internal reference output

Short-circuit current

125

μA

External reference voltage

1.20

1.28

External reference input resistance

Ω

External reference input capacitance

TEMPERATURE SENSOR

Temperature range

–40

°C

Resolution

1.6

°C

Accuracy

±2.0

°C

LEVEL OF PIN GALR AND DAV

IOH = 0.3mA

2.4

DVDD

IOL = 125μA

0.4

DIGITAL INPUT/OUTPUT, EXCEPT PIN GALR AND DAV

VIH

IIH = 5μA

2.1

BVDD + 0.3

VIL

IIL = –5μA

0.6

Logic level

VOH

IOH = –3mA

2.4

BVDD

VOL

IOL = 3mA

0.4

Input capacitance

POWER SUPPLY REQUIREMENTS

AVDD

2.70

3.3

Power-

supply

DVDD

2.70

3.3

voltage

BVDD

(6)

2.70

3.3

In normal operation

Quiescent current of AVDD

All power-down

Quiescent current of DVDD

0.3

Quiescent current of BVDD

0.1

Power dissipation

TEMPERATURE RANGE

Specified performance

–40

+85

°C

Storage

–65

+150

°C

(5)

Bit GREF in AMC Status/Configuration Register determines the internal reference voltage. GREF must be cleared when AVDD is less

than 5V and the internal reference is selected (see AMC Status/Configuration Register for details).

(6)

BVDD must be not greater than AVDD or DVDD.

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