AD8278ARZ-RL datasheet(4/24 Pages) AD

部件名	AD8278ARZ-RL

功能描述	Low Power, Wide Supply Range, Low Cost Difference Amplifier, G = 쩍, 2

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制造商	AD [Analog Devices]

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AD8278

Rev. 0 | Page 4 of 24

VS = ±5 V to ±15 V, VREF = 0 V, TA = 25°C, RL = 10 kΩ connected to ground, G = 2 difference amplifier configuration, unless

otherwise noted.

Table 3.

Parameter

Conditions

G = 2

Unit

Grade B

Grade A

Min

Typ

Max

Min

Typ

Max

INPUT CHARACTERISTICS

System Offset1

100

200

100

500

μV

vs. Temperature

TA = −40°C to +85°C

200

500

μV

Average Temperature

Coefficient

TA = −40°C to +85°C

0.6

2

5

μV/°C

vs. Power Supply

VS = ±5 V to ±18 V

5

10

μV/V

Common-Mode

Rejection Ratio (RTI)

VS = ±15 V, VCM = ±27 V,

RS = 0 Ω

86

80

dB

Input Voltage Range2

−1.5(VS + 0.1)

+1.5(VS − 1.5) −1.5(VS + 0.1)

+1.5(VS − 1.5)

V

Impedance3

Differential

120

kΩ

Common Mode

30

kΩ

DYNAMIC PERFORMANCE

Bandwidth

550

kHz

Slew Rate

1.1

1.4

1.1

1.4

V/μs

Settling Time to 0.01%

10 V step on output,

CL = 100 pF

10

μs

Settling Time to 0.001%

11

μs

GAIN

Gain Error

0.005

0.02

0.01

0.05

%

Gain Drift

TA = −40°C to +85°C

1

5

ppm/°

C

Gain Nonlinearity

VOUT = 20 V p-p

5

10

ppm

OUTPUT CHARACTERISTICS

Output Voltage Swing4

VS = ±15 V, RL = 10 kΩ

TA = −40°C to +85°C

−VS + 0.2

+VS − 0.2

−VS + 0.2

+VS − 0.2

V

Short-Circuit Current

Limit

±15

mA

Capacitive Load Drive

350

pF

NOISE5

Output Voltage Noise

f = 0.1 Hz to 10 Hz

2.8

μV p-p

f = 1 kHz

90

95

90

95

nV/√Hz

POWER SUPPLY

Supply Current6

200

μA

vs. Temperature

TA = −40°C to +85°C

250

μA

Operating Voltage

Range7

±2

±18

±2

±18

V

TEMPERATURE RANGE

Operating Range

−40

+125

−40

+125

°C

1 Includes input bias and offset current errors, RTO (referred to output).

2 The input voltage range may also be limited by absolute maximum input voltage or by the output swing. See the

section in the The

for details.

Input Voltage Range

ory of

Operation

3 Internal resistors are trimmed to be ratio matched and have ±20% absolute accuracy.

4 Output voltage swing varies with supply voltage and temperature. See Figur

through

for details.

e 20

Figure 23

5 Includes amplifier voltage and current noise, as well as noise from internal resistors.

6 Supply current varies with supply voltage and temperature. See Figure

and

for details.

24

Figure 26

7 Unbalanced dual supplies can be used, such as −VS = −0.5 V and +VS = +2 V. The positive supply rail must be at least 2 V above the negative supply and reference

voltage.

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