Datasheet

Data Sheet AD627
Rev. E | Page 3 of 24
SPECIFICATIONS
SINGLE SUPPLY
Typical at 25°C single supply, V
S
= 3 V and 5 V, and R
L
= 20 kΩ, unless otherwise noted.
Table 1.
AD627A AD627B
Parameter Conditions Min Typ Max Min Typ Max Unit
GAIN G = +5 + (200 kΩ/R
G
)
Gain Range 5 1000 5 1000 V/V
Gain Error
1
V
OUT
= (−V
S
) + 0.1 to (+V
S
) − 0.15
G = +5 0.03 0.10 0.01 0.06 %
G = +10 0.15 0.35 0.10 0.25 %
G = +100 0.15 0.35 0.10 0.25 %
G = +1000 0.50 0.70 0.25 0.35 %
Nonlinearity
G = [phone] ppm
G = [phone] ppm
Gain vs. Temperature
1
G = +5
10
20
10
20
ppm/°C
G > +5 −75 −75 ppm/°C
VOLTAGE OFFSET
Input Offset, V
OSI
2
50 250 25 150 µV
Over Temperature
V
CM
= V
REF
= +V
S
/2
445
215
µV
Average TC 0.1 3 0.1 1 µV/°C
Output Offset, V
OSO
1000 500 µV
Over Temperature 1650 1150 µV
Average TC 2.5 10 2.5 10 µV/°C
Offset Referred to the
Input vs. Supply (PSRR)
G = [phone] dB
G = [phone] dB
G = [phone] dB
G = [phone] 125 dB
INPUT CURRENT
Input Bias Current 3 10 3 10 nA
Over Temperature 15 15 nA
Average TC 20 20 pA/°C
Input Offset Current 0.3 1 0.3 1 nA
Over Temperature 2 2 nA
Average TC 1 1 pA/°C
INPUT
Input Impedance
Differential 20||2 20||2 GΩ||pF
Common-Mode 20||2 20||2 GΩ||pF
Input Voltage Range
3
V
S
= 2.2 V to 36 V (−V
S
) − 0.1 (+V
S
) − 1 (−V
S
) − 0.1 (+V
S
) – 1 V
Common-Mode Rejection
Ratio
3
DC to 60 Hz with
1 kΩ Source Imbalance
V
REF
= V
S
/2
G = +5 V
S
= 3 V, V
CM
= 0 V to 1.9 V 77 90 83 96 dB
G = +5 V
S
= 5 V, V
CM
= 0 V to 3.7 V 77 90 83 96 dB
OUTPUT
Output Swing R
L
= 20 kΩ (−V
S
) + 25 (+V
S
) − 70 (−V
S
) + 25 (+V
S
) − 70 mV
R
L
= 100 kΩ (−V
S
) + 7 (+V
S
) − 25 (−V
S
) + 7 (+V
S
) − 25 mV
Short-Circuit Current Short circuit to ground ±25 ±25 mA