AD8207
Rev. 0 | Page 3 of 16
SPECIFICATIONS
T
OPR
= −40°C to +125°C, V+ = 5 V or 3.3 V, unless otherwise noted.
Table 1.
Parameter Min Typ Max Unit Test Conditions/Comments
GAIN
Initial 20 V/V
Accuracy over Temperature −0.3 +0.3 % T
OPR
Gain vs. Temperature −15 0 ppm/°C T
OPR
VOLTAGE OFFSET
Offset Voltage (RTI)
1
±100 µV 25°C
Over Temperature (RTI)
1
±400 µV T
OPR
Offset Drift −1 +1 V/°C T
OPR
INPUT
Input Impedance
Differential 240 kΩ
Common Mode 126 kΩ
Input Voltage Range −4 +65 V Common mode, continuous, V+ = 5 V, T
OPR
−4 +35 V Common mode continuous, V+ = 3.3 V, T
OPR
250 mV Differential
2
, V+ = 5 V
Common-Mode Rejection (CMRR) 80 90 dB T
OPR
, f = dc to 20 kHz
OUTPUT
Output Voltage Range 0.02 V+ − 0.05 V R
L
= 25 kΩ, T
OPR
Output Resistance 2 Ω
DYNAMIC RESPONSE
Small-Signal −3 dB Bandwidth 150 kHz T
OPR
Slew Rate 1 V/µs
NOISE
0.1 Hz to 10 Hz, (RTI)
1
20 µV p-p
Spectral Density, 1 kHz, (RTI)
1
0.6 µV/√Hz
OFFSET ADJUSTMENT
Ratiometric Accuracy
3
0.497 0.503 V/V Divider to supplies, T
OPR
Accuracy (RTO)
4
±3 mV/V
Voltage applied to V
REF
1 and V
REF
2 in parallel,
T
OPR
Output Offset Adjustment Range 0.02 V+ − 0.05 V T
OPR
V
REF
Input Voltage Range
5
0.0 V+ V
VREF Divider Resistor Values 100 kΩ
POWER SUPPLY
Operating Range 4.5 5.5 V RANGE (Pin 4) connected to GND
6
3.3 4.5 V RANGE (Pin 4) connected to V+
7
Quiescent Current over Temperature 2.5 mA V
O
= 0.1 V dc
Power Supply Rejection Ratio (PSRR) 80 dB
TEMPERATURE RANGE
For Specified Performance −40 +125 °C
1
RTI = referred to input.
2
Input voltage range = ±125 mV with half-scale offset. The input differential range also depends on the supply voltage. The maximum input differential range can be
calculated by V+/20.
3
The offset adjustment is ratiometric to the power supply when V
REF
1 and V
REF
2 are used as a divider between the supplies.
4
RTO = referred to output.
5
The reference pins should be driven with a low impedance voltage source to maintain the specified accuracy of the AD8207.
6
With a 4.5 V to 5.5 V supply, the RANGE pin should be tied low. In this mode, the common-mode range of the AD8207 is −4 V to +65 V.
7
With a 3.3 V to 4.5 V supply, the RANGE pin should be tied to V+. In this mode, the common-mode range of the AD8207 is −4 V to +35 V. If a 4.5 V supply is used, the
user can tie RANGE high or low depending on the common-mode range needed in the application.
