Datasheet

REV. A
AD8225
–3–
Parameter Conditions Min Typ Max Unit
GAIN
Gain 5V/V
Gain Error –0.1 +0.05 +0.1 %
Nonlinearity 2 10 ±ppm
vs. Temperature 1 5 ±ppm/°C
VOLTAGE OFFSET (RTI)
Offset Voltage 125 325 ±µV
vs. Temperature 2 ±µV/°C
vs. Supply 90 100 dB
INPUT
Input Operating Impedance
Differential 10
储 2GΩ 储 pF
Common-Mode 10
储 2GΩ 储 pF
Input Operating Voltage Range –V
S
+ 1.6 +V
S
– 1.0 V
vs. Temperature –V
S
+ 2.1 +V
S
– 1.5 V
Input Bias Current 0.5 1.2 nA
vs. Temperature 3 pA/°C
Input Offset Current 0.15 0.5 nA
vs. Temperature 1.5 pA/°C
Common-Mode Rejection Ratio 86 94 dB
T
A
= T
MIN
to T
MAX
83 dB
f = 10 kHz* 80 dB
OUTPUT
Operating Voltage Range R
L
= 2 kΩ –V
S
+ 0.9 +V
S
– 1.0 V
vs. Temperature –V
S
+ 1.0 +V
S
– 1.2 V
Operating Voltage Range R
L
= 10 kΩ –V
S
+ 0.8 +V
S
– 1.0 V
vs. Temperature –V
S
+ 0.9 +V
S
– 1.0 V
Short Circuit Current 18 mA
DYNAMIC RESPONSE
Small Signal –3 dB Bandwidth 900 kHz
Full Power Bandwidth V
OUT
= 7.8 V p-p 170 kHz
Settling Time (0.01%) 7 V Step 3 µs
Settling Time (0.001%) 7 V Step 4.3 µs
Slew Rate 5 V/µs
NOISE (RTI)
Voltage 0.1 Hz to 10 Hz 1.5 µV p-p
Spectral Density, 1 kHz 45 nV/√Hz
Current 0.1 Hz to 10 Hz 4 pA p-p
Spectral Density, 1 kHz 50 fA/√Hz
REFERENCE INPUT
R
IN
18 kΩ
I
IN
V
INT
, V
REF
= 0 60 µA
Voltage Range –V
S
+ 0.9 +V
S
– 1.0 V
Gain to Output 0.999 1 1.001
POWER SUPPLY
Operating Range 1.7 18 ±V
Quiescent Current 1.05 1.2 mA
TEMPERATURE RANGE
For Specified Performance –40 +85 °C
*Pin 1 connected to Pin 4. See Applications section.
Specifications subject to change without notice.
SPECIFICATIONS
(T
A
= 25C, V
S
= 5 V, R
L
= 2 k, unless otherwise noted.)