AD8479 datasheet(3/16 Pages) AD

Nome de Peças	AD8479

Descrição Electrónicos	Very High Common-Mode Voltage Precision Difference Amplifier

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Fabricante Electrônico	AD [Analog Devices]

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Data Sheet

AD8479

Rev. 0 | Page 3 of 16

SPECIFICATIONS

VS = ±15 V, REF(−) = REF(+) = 0 V, RL = 2 kΩ, TA = 25°C, unless otherwise noted.

Table 1.

A Grade

B Grade

Parameter

Test Conditions/Comments

Min

Typ

Max

Min

Typ

Max

Unit

GAIN

VOUT = ±10 V, RL = 2 kΩ

Nominal Gain

1

V/V

Gain Error

0.01

0.02

0.005

0.01

%

Gain Nonlinearity

4

10

2

5

ppm

Gain Drift

TA = TMIN to TMAX

3

5

3

5

ppm/°C

OFFSET VOLTAGE

Offset Voltage

VS = ±15 V

0.5

3

0.5

1

mV

VS = ±5 V

0.5

3

0.5

1

mV

Offset Voltage Drift

TA = TMIN to TMAX

3

15

3

10

µV/°C

Power Supply Rejection

Ratio (PSRR)

VS = ±2.5 V to ±15 V

84

100

90

100

dB

INPUT

Common-Mode Rejection

Ratio (CMRR)

VCM = ±600 V dc

TA = 25°C

80

90

96

dB

TA = TMIN to TMAX

80

90

dB

VCM = 1200 V p-p, dc to 12 kHz

80

dB

Operating Voltage Range

Common-mode

±600

V

Differential

±14.7

V

Input Operating

Impedance

Common-mode

500

kΩ

Differential

2

MΩ

OUTPUT

Output Voltage Swing

RL = 2 kΩ

−VS + 0.3

+VS − 0.3

−VS + 0.3

+VS − 0.3

V

Output Short-Circuit

Current

±55

mA

Capacitive Load

Stable operation

500

pF

DYNAMIC RESPONSE

Small Signal −3 dB

Bandwidth

130

kHz

Slew Rate

7.5

8

7.5

8

V/µs

Full Power Bandwidth

VOUT = 20 V p-p

100

kHz

Settling Time

0.01%, VOUT = 10 V step

11

µs

0.001%, VCM = 10 V step

15.4

µs

OUTPUT VOLTAGE NOISE

0.01 Hz to 10 Hz

30

35

30

35

µV p-p

Noise Spectral Density

f ≥ 100 Hz

1.6

μV/√Hz

POWER SUPPLY

Operating Voltage Range

±2.5

±18

±2.5

±18

V

Supply Current

VOUT = 0 V

550

650

550

650

μA

TA = TMIN to TMAX

850

μA

TEMPERATURE RANGE

Specified Performance

TA = TMIN to TMAX

−40

+85

−40

+85

°C

Operational

−40

+125

−40

+125

°C

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