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AD8421TRMZ-EP

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20
AD8421-EP Enhanced Product
Rev. 0 | Page 4 of 20
Parameter Test Conditions/ Comments Min Typ Max Unit
DYNAMIC RESPONSE
Small Signal Bandwidth −3 dB
G = 1 10 MHz
G = 10 10 MHz
G = 100 2 MHz
G = 1000 0.2 MHz
Settling Time 0.01% 10 V step
G = 1 0.7 µs
G = 10 0.4 µs
G = 100 0.6 µs
G = 1000 5 µs
Settling Time 0.001% 10 V step
G = 1 1 µs
G = 10 0.6 µs
G = 100 0.8 µs
G = 1000
6
µs
Slew Rate
G = 1 to 100 35 V/µs
GAIN
3
G = 1 + (9.9 kΩ/R
G
)
Gain Range 1 10,000 V/V
Gain Error V
OUT
= ±10 V
G = 1 0.05 %
G = 10 to 1000 0.3 %
Gain Nonlinearity V
OUT
= −10 V to +10 V
G = 1 R
L
≥ 2 kΩ 1 ppm
R
L
= 600 Ω 1 3 ppm
G = 10 to 1000 R
L
≥ 600 Ω 30 50 ppm
V
OUT
= −5 V to +5 V 5 10 ppm
Gain vs. Temperature
3
G = 1
5
ppm/°C
G > 1 −80 ppm/°C
INPUT
Input Impedance
Differential 30||3 GΩ||pF
Common Mode 30||3 GΩ||pF
Input Operating Voltage Range
4
V
S
= ±2.5 V to ±18 V −V
S
+ 2.3 +V
S
− 1.8 V
Over Temperature T
A
= −55°C −V
S
+ 2.5 +V
S
− 2.0 V
T
A
= +125°C −V
S
+ 2.1 +V
S
− 1.8 V
OUTPUT R
L
= 2 kΩ
Output Swing V
S
= ±2.5 V to ±18 V −V
S
+ 1.2 +V
S
− 1.7 V
Over Temperature T
A
= −55°C to +125°C −V
S
+ 1.4 +V
S
− 1.9 V
Short-Circuit Current 65 mA
REFERENCE INPUT
R
IN
20 kΩ
I
IN
V
IN
+, V
IN
− = 0 V 20 24 µA
Voltage Range −V
S
+V
S
V
Reference Gain to Output 1 ±
0.0001
V/V
Enhanced Product AD8421-EP
Rev. 0 | Page 5 of 20
Parameter Test Conditions/ Comments Min Typ Max Unit
POWER SUPPLY
Operating Range Dual supply ±2.5 ±18 V
Single supply 5 36 V
Quiescent Current 2 2.3 mA
Over Temperature T
A
= −55°C to +125°C 2.8 mA
TEMPERATURE RANGE
For Specified Performance −55 +125 °C
1
Total voltage noise = √(e
ni
2
+ (e
no
/G)
2
+ e
RG
2
). See the AD8421 data sheet for more information.
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-EP input stage only. The input range can depend on the common-mode voltage, differential voltage, gain, and reference voltage.
See the Typical Performance Characteristics section for more information.
AD8421-EP Enhanced Product
Rev. 0 | Page 6 of 20
ABSOLUTE MAXIMUM RATINGS
Table 2.
Parameter Rating
Supply Voltage ±18 V
Output Short-Circuit Current Duration Indefinite
Maximum Voltage at −IN or +IN
1
−V
S
+ 40 V
Minimum Voltage at −IN or +IN +V
S
− 40 V
Maximum Voltage at REF
2
+V
S
+ 0.3 V
Minimum Voltage at REF −V
S
− 0.3 V
Storage Temperature Range −65°C to +150°C
Operating Temperature Range
Maximum Junction Temperature 150°C
ESD
Human Body Model 2 kV
Charged Device Model 1.25 kV
Machine Model
1
For voltages beyond these limits, use input protection resistors. See the
AD8421 data sheet for more information.
2
There are ESD protection diodes from the reference input to each supply, so
REF cannot be driven beyond the supplies in the same way that +IN and −IN
can. See the AD8421 data sheet for more information.
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
THERMAL RESISTANCE
θ
JA
is specified for a device in free air using a 4-layer JEDEC
printed circuit board (PCB).
Table 3.
Package θ
JA
Unit
8-Lead MSOP 138.6 °C/W
ESD CAUTION
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20

AD8421TRMZ-EP

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Instrumentation Amplifiers 3nV/vHz noise Precision InAmp
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