AD8279BRZ View Datasheet(PDF) - Analog Devices

Part Name

Description

Manufacturer

AD8279BRZ

Low Power, Wide Supply Range, Low Cost Difference Amplifiers, G = ½, 2

Analog Devices 

AD8278/AD8279

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

INPUT CHARACTERISTICS

System Offset1

Over Temperature

vs. Power Supply

Average Temperature

Coefficient

Common-Mode Rejection

Ratio (RTI)

Input Voltage Range2

Impedance3

Differential

Common Mode

DYNAMIC PERFORMANCE

Bandwidth

Slew Rate

Channel Separation

Settling Time to 0.01%

GAIN

Gain Error

Gain Drift

OUTPUT CHARACTERISTICS

Output Swing4

Short-Circuit Current Limit

Capacitive Load Drive

NOISE5

Output Voltage Noise

POWER SUPPLY6

AD8278 Supply Current

AD8279 Supply Current

Operating Voltage Range

TEMPERATURE RANGE

Operating Range

Conditions

G=½

Grade B

Min

Typ Max

Min

Grade A

Typ

Max

75

TA = −40°C to +85°C

VS = ±5 V to ±18 V

TA = −40°C to +85°C

0.3

VS = 2.7 V, VCM = 0 V to

2.4 V, RS = 0 Ω

80

VS = ±5 V, VCM = −10 V

to +7 V, RS = 0 Ω

80

−3 (VS + 0.1)

150

75

150

2.5

1

2

74

74

+3 (VS − 1.5) −3 (VS + 0.1)

250

250

5

5

+3 (VS − 1.5)

120

120

30

30

870

870

1.3

1.3

f = 1 kHz

130

130

2 V step on output,

CL = 100 pF, VS = 2.7 V

7

7

TA = −40°C to +85°C

0.005 0.02

1

0.01

0.05

5

RL = 10 kΩ,

TA = −40°C to +85°C

−VS + 0.1

+VS − 0.15 −VS + 0.1

±10

±10

200

200

+VS − 0.15

f = 0.1 Hz to 10 Hz

f = 1 kHz

1.4

47

50

1.4

47

50

TA = −40°C to +85°C

200

200

TA = −40°C to +85°C

375

375

2.0

36

2.0

36

−40

+125

−40

+125

Unit

μV

μV

μV/V

μV/°C

dB

dB

V

kΩ

kΩ

kHz

V/μs

dB

μs

%

ppm/°C

V

mA

pF

μV p-p

nV/√Hz

μA

μA

V

°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 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 22 through Figure 25 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 27 and Figure 28 for details.

Rev. C | Page 5 of 24

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