Datasheet

AD8219
Rev. A | Page 3 of 12
SPECIFICATIONS
T
OPR
= −40°C to +125°C, T
A
= 25°C, R
L
= 25 kΩ, input common-mode voltage (V
CM
) = 4 V (R
L
is the output load resistor), unless
otherwise noted.
Table 1.
Parameter Min Typ Max Unit Test Conditions/Comments
GAIN
Initial 60 V/V
Accuracy ±0.1 % V
O
≥ 0.1 V dc, T
A
Accuracy over Temperature ±0.3 % T
OPR
Gain vs. Temperature ±5 ppm/°C T
OPR
VOLTAGE OFFSET
Offset Voltage (RTI
1
) ±200 µV 25°C
Over Temperature (RTI
1
) ±300 µV T
OPR
Offset Drift ±100 nV/°C T
OPR
INPUT
Bias Current
2
130 µA T
A
, input common mode = 4 V, V
S
= 4 V
220 µA T
OPR
Common-Mode Input Voltage Range 4 80 V Common-mode continuous
Differential Input Voltage Range
3
0 83 mV Differential input voltage
Common-Mode Rejection (CMRR) 94 110 dB T
OPR
OUTPUT
Output Voltage Range Low
4
0.01 V T
A
Output Voltage Range High
4
V
S
− 0.1 V T
A
Output Impedance 2 Ω
DYNAMIC RESPONSE
Small Signal −3 dB Bandwidth 500 kHz
Slew Rate 1 V/µs
NOISE
0.1 Hz to 10 Hz, (RTI
1
) 2.3 µV p-p
Spectral Density, 1 kHz, (RTI
1
) 110 nV/√Hz
POWER SUPPLY
Operating Range 4 80 V
V
S
input range
Quiescent Current Over Temperature
5
800 µA
Power Supply Rejection Ratio (PSRR) 100 110 dB
T
OPR
TEMPERATURE RANGE
For Specified Performance −40 +125 °C
1
RTI = referred to input.
2
Refer to for further information on the input bias current. This current varies based on the input common-mode voltage. Additionally, the input bias current
flowing to the +IN pin is also the supply current to the internal LDO.
Figure 8
3
The differential input voltage is specified as 83 mV maximum because the output is internally clamped to 5.6 V. See the Output section. Clamping
4
See and for further information on the output range of the AD8219 with various loads. The AD8219 output clamps to a maximum voltage of 5.6 V
when the voltage at Pin +IN is greater than 5.6 V. When the voltage at +IN is less than 5.6 V, the output reaches a maximum value of (V
S
− 100 mV).
Figure 19 Figure 20
5
V
S
(Pin 2) can be connected to a separate supply ranging from 4 V to 80 V, or it can be connected to the positive input pin (+IN) of the AD8219. In this mode, the
current drawn varies with increasing voltage. See . Figure 9