AMC7834 datasheet(11/97 Pages) TI2

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AMC7834

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SLAS972B – NOVEMBER 2014 – REVISED MARCH 2016

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(1)

Input range for all monitoring inputs must be met for accuracy specifications to apply.

(2)

Not tested during production. Specified by design and characterization.

6.6 Electrical Characteristics—ADC, Current and Temperature Sensor Specifications

The electrical ratings specified in this section apply to all specifications in this document, unless otherwise noted. These

specifications are interpreted as conditions that do not degrade the device parametric or functional specifications for the life of

the product containing it. AVDD = DVDD = 5 V, AVCC = 5 V, AVSS = –5 V, IOVDD = 1.8 to 3.3 V, PAVDD = 5 V, AGND = DGND =

0 V, external 2.5 V reference, DAC output range = 0 to 5 V for all DACs, no load on the DACs, current sense inputs common

mode at 48 V, TA = –40°C to +105°C

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

EXTERNAL ANALOG INPUTS (ADC1, ADC2, ADC3 and ADC4)

Resolution

Bits

INL

Integral nonlinearity

±0.5

±1

LSB

DNL

Differential nonlinearity

Specified monotonic

±0.5

±1

LSB

Offset error

±0.3

±4.5

LSB

Offset error match

±1

LSB

Gain error

±0.3

±4

LSB

Gain error match

±1

LSB

Full-scale input range(1)

Vref

Input capacitance

DC-input leakage current

Unselected ADC input

±2

µA

INTERNAL MONITORING INPUTS (BIPOLAR DAC-OUTPUT MONITORING)

Full scale input range(1)

–5

2.5

Resolution

LSB size

1.83

CURRENT-SENSE INPUTS

Common mode voltage

Full scale sense voltage(1)

SENSEn+ – SENSEn-

200

Input resistance

Per current sense input terminal

192

Gain accuracy

±0.1%

±1%

Input offset error

CS-FILTER[2:0] = 100

Common mode voltage = 4 V

±50

±500

µV

CMRR

CS-FILTER[2:0] = 100

Resolution

LSB size

48.83

µV

TEMPERATURE SENSOR: INTERNAL

Operating range(1)(2)

Specified monotonic over entire range.

–55

125

°C

Accuracy(2)

TJ = –40°C to 125°C

±3

°C

Resolution

LSB size

TJ = –40°C to 125°C

0.25

°C

TEMPERATURE SENSOR: EXTERNAL (USING 2N3906 EXTERNAL TRANSISTOR)

Operating range(1)(2)

–55

150

°C

Accuracy(2)

RT-SET[2:0] = 011, CS-FILTER[2:0] = 100

TA = –40°C to 125°C, T(DIODE) = –40°C to 150°C

±3

°C

Resolution

LSB size

TA = –40°C to 125°C, T(DIODE) = –40°C to 150°C

0.25

°C

AMC7834 Datasheet(PDF) 11 Page - Texas Instruments

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