AD8217
Rev. A | Page 3 of 16
SPECIFICATIONS
T
OPR
= −40°C to +125°C, T
A
= 25°C, R
L
= 25 kΩ, input common-mode voltage (V
CM
= 4.5 V) (R
L
is the output load resistor), unless
otherwise noted.
Table 1.
Parameter Min Typ Max Unit Test Conditions/Comments
GAIN
Initial 20 V/V
Accuracy ±0.1 % V
O
≥ 0.1 V dc, T
A
Accuracy over Temperature ±0.35 % T
OPR
Gain vs. Temperature ±5 ppm/°C T
OPR
VOLTAGE OFFSET
Offset Voltage (RTI)
1
±250 μV 25°C
Over Temperature (RTI)
1
±300 μV T
OPR
Offset Drift ±100 nV/°C T
OPR
INPUT
Bias Current
2
500 μA T
A
800 μA T
OPR
Common-Mode Input Voltage Range 4.5 80 V Common-mode continuous
Differential Input Voltage Range
3
250 mV Differential input voltage
Common-Mode Rejection (CMRR) 90 100 dB T
OPR
OUTPUT
Output Voltage Range Low 0.01 V T
A
4
Output Voltage Range High 5 V T
A
4
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 4.5 80 V
Power regulated from common mode
Quiescent Current Over Temperature 800 μA Throughout input common mode
Power Supply Rejection Ratio (PSRR) 90 110 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 250 mV typical because the output is internally clamped to 5 V. This ensures the output voltage does not exceed 5 V and
can interface and not cause damage to any typical converter, regardless of the high voltage present at the inputs of the AD8217 (up to 80 V).
4
See and for further information on the output range of the AD8217 with various loads. The AD8217 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
+IN
− 100 mV).
Figure 17 Figure 18
