AD8278/AD8279
Rev. C | 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.
G = 2
Grade B
Grade A
Parameter
Conditions
Min
Typ
Max
Min
Typ
Max
Unit
INPUT CHARACTERISTICS
100
200
100
500
μV
Over Temperature
TA = 40°C to +85°C
200
500
μV
vs. Power Supply
VS = ±5 V to ±18 V
5
10
μV/V
Average Temperature
Coefficient
TA = 40°C to +85°C
0.6
2
5
μV/°C
Common-Mode
Rejection Ratio (RTI)
VS = ±15 V, VCM = ±27 V,
RS = 0 Ω
86
80
dB
1.5 (VS + 0.1)
+1.5 (VS 1.5) 1.5 (VS + 0.1)
+1.5 (VS 1.5)
V
Differential
30
kΩ
Common Mode
30
kΩ
DYNAMIC PERFORMANCE
Bandwidth
550
kHz
Slew Rate
1.1
1.4
1.1
1.4
V/μs
Channel Separation
f = 1 kHz
130
dB
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
7
12
ppm
OUTPUT CHARACTERISTICS
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
Output Voltage Noise
f = 0.1 Hz to 10 Hz
2.8
μV p-p
f = 1 kHz
90
95
90
95
nV/√Hz
AD8278 Supply Current
200
μA
Over Temperature
TA = 40°C to +85°C
250
μA
AD8279 Supply Current
300
350
300
350
μA
Over Temperature
TA = 40°C to +85°C
400
μA
±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
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 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 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.