Datasheet

Data Sheet AD8224
Rev. C | Page 7 of 28
A Grade B Grade
Parameter Test Conditions Min Typ Max Min Typ Max Unit
GAIN G = 1 + (49.4 kΩ/R
G
)
Gain Range 1 1000 1 1000 V/V
Gain Error
G = 1 V
OUT
= 0.3 V to 2.9 V 0.06 0.04 %
G = 10 V
OUT
= 0.3 V to 3.8 V 0.3 0.2 %
G = 100 V
OUT
= 0.3 V to 3.8 V 0.3 0.2 %
G = 1000 V
OUT
= 0.3 V to 3.8 V 0.3 0.2 %
Nonlinearity V
OUT
= 0.3 V to 2.9 V for G = 1
V
OUT
= 0.3 V to 3.8 V for G > 1
G = 1 R
L
= 10 kΩ 35 50 35 50 ppm
G = 10 R
L
= 10 kΩ 35 50 35 50 ppm
G = 100 R
L
= 10 kΩ 50 75 50 75 ppm
G = 1000 R
L
= 10 kΩ 90 115 90 115 ppm
G = 1 R
L
= 2 kΩ 35 50 35 50 ppm
G = 10
R
L
= 2 kΩ
35
50
35
50
ppm
G = 100 R
L
= 2 kΩ 50 75 50 75 ppm
G = 1000 R
L
= 2 kΩ 175 200 175 200 ppm
Gain vs. Temperature
G = 1 3 10 2 5 ppm/°C
G > 10 −50 −50 ppm/°C
INPUT
Impedance (Pin to Ground)
4
10
4
||6 10
4
||6 GΩ||pF
Input Voltage Range
5
−0.1
+V
S
− 2
−0.1
+V
S
− 2
V
Over Temperature T = −40°C to +85°C −0.1 +V
S
− 2.1 −0.1 +V
S
− 2.1 V
OUTPUT
Output Swing
R
L
= 2 kΩ
0.25
4.75
0.25
4.75
V
Over Temperature T = −40°C to +85°C 0.3 4.70 0.3 4.70 V
Output Swing R
L
= 10 kΩ 0.15 4.85 0.15 4.85 V
Over Temperature T = −40°C to +85°C 0.2 4.80 0.2 4.80 V
Short-Circuit Current 15 15 mA
POWER SUPPLY
Operating Range 4.5 36 4.5 36 V
Quiescent Current (Per Amplifier) 750 800 750 800 µA
Over Temperature
T = −40°C to +85°C
850
900
850
900
µA
TEMPERATURE RANGE
For Specified Performance −40 +85 −40 +85 °C
Operational
6
−40
+125
−40
+125
°C
1
When the output sinks more than 4 mA, use a 47 pF capacitor in parallel with the load to prevent ringing. Otherwise, use a larger load, such as 10 kΩ.
2
Refers to the differential configuration shown in Figure 63.
3
Refer to Figure 14 and Figure 15 for the relationship between input current and temperature.
4
Differential and common-mode impedance can be calculated from the pin impedance: Z
DIFF
= 2(Z
PIN
); Z
CM
= Z
PIN
/2.
5
The AD8224 can operate up to a diode drop below the negative supply, but the bias current increases sharply. The input voltage range reflects the maximum
allowable voltage where the input bias current is within the specification.
6
The AD8224 is characterized from −40°C to +125°C. See the Typical Performance Characteristics section for expected operation in that temperature range.