Datasheet

Data Sheet AD8421
Rev. 0 | Page 7 of 28
ARM Grade BRM Grade
Parameter
Test Conditions/
Comments
Min Typ Max Min Typ Max
Unit
OUTPUT R
L
= 2 kΩ
Output Swing V
S
= ±2.5 V to ±18 V −V
S
+ 1.2 +V
S
− 1.6 −V
S
+ 1.2 +Vs − 1.6 V
Over Temperature T
A
= −40°C to +85°C −V
S
+ 1.2 +V
S
− 1.6 −V
S
+ 1.2 +Vs − 1.6 V
Short-Circuit Current 65 65 mA
REFERENCE INPUT
R
IN
20 20 kΩ
I
IN
V
IN
+, V
IN
− = 0 V 20 24 20 24 μA
Voltage Range −V
S
+V
S
−V
S
+V
S
V
Reference Gain to Output
1 ±
0.0001
1 ±
0.0001
V/V
POWER SUPPLY
Operating Range Dual supply ±2.5 ±18 ±2.5 ±18 V
Single supply 5 36 5 36 V
Quiescent Current 2 2.3 2 2.3 mA
Over Temperature T
A
= −40°C to +85°C 2.6 2.6 mA
TEMPERATURE RANGE
For Specified Performance −40 +85 −40 +85 °C
Operational
5
−40 +125 −40 +125 °C
1
Total voltage noise = √(e
ni
2
+ (e
no
/G)
2
+ e
RG
2
). See the Th section for more information. eory of Operation
2
Total RTI V
OS
= (V
OSI
) + (V
OSO
/G).
3
These specifications do not include the tolerance of the external gain setting resistor, R
G
. For G > 1, add R
G
errors to the specifications given in this table.
4
Input voltage range of the AD8421 input stage only. The input range can depend on the common-mode voltage, differential voltage, gain, and reference voltage.
See the section for more information. Input Voltage Range
5
See the section for expected operation between 85°C and 125°C. Typical Performance Characteristics