Datasheet

AD8251
Rev. B | Page 3 of 24
SPECIFICATIONS
+V
S
= 15 V, −V
S
= −15 V, V
REF
= 0 V @ T
A
= 25°C, G = 1, R
L
= 2 kΩ, unless otherwise noted.
Table 2.
Parameter Conditions Min Typ Max Unit
COMMON-MODE REJECTION RATIO (CMRR)
CMRR to 60 Hz with 1 kΩ Source Imbalance +IN = −IN = −10 V to +10 V
G = 1 80 98 dB
G = 2 86 104 dB
G = 4 92 110 dB
G = 8 98 110 dB
CMRR to 50 kHz +IN = −IN = −10 V to +10 V
G = 1 80 dB
G = 2 84 dB
G = 4 86 dB
G = 8 86 dB
NOISE
Voltage Noise, 1 kHz, RTI
G = 1 40 nV/√Hz
G = 2 27 nV/√Hz
G = 4 22 nV/√Hz
G = 8 18 nV/√Hz
0.1 Hz to 10 Hz, RTI
G = 1 2.5 μV p-p
G = 2 2.5 μV p-p
G = 4 1.8 μV p-p
G = 8 1.2 μV p-p
Current Noise, 1 kHz 5 pA/√Hz
Current Noise, 0.1 Hz to 10 Hz 60 pA p-p
VOLTAGE OFFSET
Offset RTI V
OS
G = 1, 2, 4, 8 ±(70 + 200/G) ±(200 + 600/G) μV
Over Temperature T = −40°C to +85°C ±(90 + 300/G) ±(260 + 900/G) μV
Average TC T = −40°C to +85°C ±(0.6 + 1.5/G) ±(1.2 + 5/G) μV/°C
Offset Referred to the Input vs. Supply (PSR) V
S
= ±5 V to ±15 V ±(2 + 7/G) ±(6 + 20/G) μV/V
INPUT CURRENT
Input Bias Current 5 30 nA
Over Temperature T = −40°C to +85°C 40 nA
Average TC T = −40°C to +85°C 400 pA/°C
Input Offset Current 5 30 nA
Over Temperature T = −40°C to +85°C 30 nA
Average TC T = −40°C to +85°C 160 pA/°C
DYNAMIC RESPONSE
Small Signal −3 dB Bandwidth
G = 1 10 MHz
G = 2 10 MHz
G = 4 8 MHz
G = 8 2.5 MHz
Settling Time 0.01% ΔOUT = 10 V step
G = 1 615 ns
G = 2 460 ns
G = 4 460 ns
G = 8 625 ns