AD8278/AD8279
Rev. C | Page 6 of 24
VS = +2.7 V to <±5 V, VREF = midsupply, TA = 25°C, RL = 10 kΩ connected to midsupply, G = 2 difference amplifier configuration, unless
otherwise noted.
Table 5.
G = 2
Grade B
Grade A
Parameter
Conditions
Min
Typ
Max
Min
Typ
Max
Unit
INPUT CHARACTERISTICS
150
300
150
500
μV
Over Temperature
TA = 40°C to +85°C
300
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
3
5
μV/°C
Common-Mode Rejection
Ratio (RTI)
VS = 2.7 V, VCM = 0 V
to 2.4 V, RS = 0 Ω
86
80
dB
VS = ±5 V, VCM = 10 V
to +7 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
450
kHz
Slew Rate
1.3
V/μs
Channel Separation
f = 1 kHz
130
dB
Settling Time to 0.01%
2 V step on output,
CL = 100 pF, VS = 2.7 V
9
μs
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
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
Output Voltage Noise
f = 0.1 Hz to 10 Hz
2.8
μV p-p
f = 1 kHz
94
100
94
100
nV/√Hz
AD8278 Supply Current
TA = 40°C to +85°C
200
μA
AD8279 Supply Current
TA = 40°C to +85°C
375
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 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