AD8230
Rev. B | Page 3 of 16
SPECIFICATIONS
V
S
= ±5 V, V
REF
= 0 V, R
F
= 100 kΩ, R
G
= 1 kΩ (@ T
A
= 25°C, G = 202, R
L
= 10 kΩ, unless otherwise noted).
Table 1.
Parameter Conditions Min Typ Max Unit
VOLTAGE OFFSET
RTI Offset, V
OSI
V
+IN
= V
−IN
= 0 V 10 μV
Offset Drift
V
+IN
= V
−IN
= 0 V,
T
A
= −40°C to +125°C
50 nV/°C
COMMON-MODE REJECTION (CMR)
CMR to 60 Hz with 1 kΩ Source Imbalance V
CM
= −5 V to +5 V 110 120 dB
VOLTAGE OFFSET RTI vs. SUPPLY (PSR)
G = 2 120 120 dB
G = 202 120 140 dB
GAIN G = 2(1 + R
F
/R
G
)
Gain Range 10
1
1000 V/V
Gain Error
2
G = 2 0.01 0.04 %
G = 10 0.01 0.04 %
G = 100 0.01 0.04 %
G = 1000 0.02 0.05 %
Gain Nonlinearity 20 ppm
Gain Drift
G = 2, 10, 102 14 ppm/°C
G = 1002 60 ppm/°C
INPUT
Input Common-Mode Operating Voltage Range −V
S
+V
S
V
Over Temperature T = −40°C to +125°C −V
S
+V
S
V
Input Differential Operating Voltage Range 750 mV
Average Input Offset Current
3
V
CM
= 0 V 33 300 pA
Average Input Bias Current
3
V
CM
= 0 V 0.15 1 nA
OUTPUT
Output Swing −V
S
+ 0.1 +V
S
− 0.2 V
Over Temperature T = −40°C to +125°C −V
S
+ 0.1 +V
S
− 0.2 V
Short-Circuit Current 15 mA
REFERENCE INPUT
Voltage Range
4
−V
S
+ 3.5 +V
S
− 2.5 V
NOISE
Voltage Noise Density, 1 kHz, RTI V
IN+
, V
IN−
, V
REF
= 0 V 240 nV/√Hz
Voltage Noise f = 0.1 Hz to 10 Hz 3 μV p-p
SLEW RATE V
IN
= 500 mV, G = 10 2 V/μs
INTERNAL SAMPLE RATE 6 kHz
POWER SUPPLY
Operating Range (Dual Supplies) ±4 ±8 V
Operating Range (Single Supply) 8 16 V
Quiescent Current T = −40°C to +125°C 2.7 3.5 mA
TEMPERATURE RANGE
Specified Performance −40 +125 °C
1
The AD8230 can operate as low as G = 2. However, since the differential input range is limited to approximately 750 mV, the AD8230 configured at G < 10 does not
make use of the full output voltage range.
2
Gain drift is determined by the TC match of the external gain setting resistors.
3
Differential source resistance less than 10 kΩ does not result in voltage offset due to input bias current or mismatched series resistors.
4
For G < 10, the reference voltage range is limited to −V
S
+ 4.24 V to +V
S
– 2.75 V.
