AD8279 datasheet(5/18 Pages) AD

Numer części	AD8279

Szczegółowy opis	Low Power, Wide Supply Range, Low Cost Difference Amplifiers, G = 쩍, 2

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5 / 18 page

Preliminary Technical Data

AD8279

Rev. PrA | Page 5 of 18

VS = +2.7 V to <±5 V, VREF = midsupply, TA = 25°C, RL = 10 kΩ connected to midsupply, G = ½ difference amplifier configuration, unless

otherwise noted.

Table 4.

Parameter

Conditions

G = ½

Unit

Grade B

Grade A

Min

Typ

Max

Min

Typ

Max

INPUT CHARACTERISTICS

System Offset1

75

150

75

250

μV

vs. Temperature

TA = −40°C to +85°C

150

250

μV

Average Temperature

Coefficient

TA = −40°C to +85°C

0.3

1

2

5

μV/°C

vs. Power Supply

VS = ±5 V to ±18 V

2.5

5

μV/V

Common-Mode Rejection

Ratio (RTI)

VS = 2.7 V, VCM = 0 V

to 2.4 V, RS = 0 Ω

80

74

dB

VS = ±5 V, VCM = −10 V

to +7 V, RS = 0 Ω

80

74

dB

Input Voltage Range2

−3(VS + 0.1)

+3(VS − 1.5)

−3(VS + 0.1)

+3(VS − 1.5)

V

Impedance3

Differential

120

kΩ

Common Mode

30

kΩ

DYNAMIC PERFORMANCE

Bandwidth

870

kHz

Slew Rate

1.3

V/μs

Settling Time to 0.01%

2 V step on output,

CL = 100 pF, VS = 2.7 V

7

μs

Channel Separation

f = 1 kHz

130

dB

GAIN

Gain Error

0.005

0.02

0.01

0.05

%

Gain Drift

TA = −40°C to +85°C

1

5

ppm/°C

OUTPUT CHARACTERISTICS

Output Swing4

RL = 10 kΩ ,

TA = −40°C to +85°C

−VS + 0.1

+VS − 0.15

−VS + 0.1

+VS − 0.15

V

Short-Circuit Current Limit

±10

mA

Capacitive Load Drive

200

pF

NOISE5

Output Voltage Noise

f = 0.1 Hz to 10 Hz

1.4

μV p-p

f = 1 kHz

47

50

47

50

nV/√Hz

POWER SUPPLY

Supply Current6

TA = −40°C to +85°C

200

μA

Operating Voltage Range

2.0

36

2.0

36

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 Input Voltage Range section in the Theory of Operation

section for details.

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 Figure 19 through Figure 22 for details.

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 24 and Figure 25 for details.

Podobny numer części - AD8279

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Analog Devices	AD8279	513Kb / 24P	Low Power, Wide Supply Range, Low Cost Difference Amplifiers, REV. C
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