Datasheet

AD8628/AD8629/AD8630
Rev. I | Page 4 of 24
ELECTRICAL CHARACTERISTICS—V
S
= 2.7 V
V
S
= 2.7 V, V
CM
= 1.35 V, V
O
= 1.4 V, T
A
= 25°C, unless otherwise noted.
Table 2.
Parameter Symbol Conditions Min Typ Max Unit
INPUT CHARACTERISTICS
Offset Voltage V
OS
1 5 μV
−40°C ≤ T
A
≤ +125°C 10 μV
Input Bias Current I
B
AD8628/AD8629 30 100 pA
AD8630 100 300 pA
−40°C ≤ T
A
≤ +125°C 1.0 1.5 nA
Input Offset Current I
OS
50 200 pA
−40°C ≤ T
A
≤ +125°C 250 pA
Input Voltage Range 0 2.7 V
Common-Mode Rejection Ratio CMRR V
CM
= 0 V to 2.7 V 115 130 dB
−40°C ≤ T
A
≤ +125°C 110 120 dB
Large Signal Voltage Gain A
VO
R
L
= 10 kΩ, V
O
= 0.3 V to 2.4 V 110 140 dB
−40°C ≤ T
A
≤ +125°C 105 130 dB
Offset Voltage Drift ∆V
OS
/∆T −40°C ≤ T
A
≤ +125°C 0.002 0.02 μV/°C
OUTPUT CHARACTERISTICS
Output Voltage High V
OH
R
L
= 100 kΩ to ground 2.68 2.695 V
−40°C ≤ T
A
≤ +125°C 2.68 2.695 V
R
L
= 10 kΩ to ground 2.67 2.68 V
−40°C ≤ T
A
≤ +125°C 2.67 2.675 V
Output Voltage Low V
OL
R
L
= 100 kΩ to V+ 1 5 mV
−40°C ≤ T
A
≤ +125°C 2 5 mV
R
L
= 10 kΩ to V+ 10 20 mV
−40°C ≤ T
A
≤ +125°C 15 20 mV
Short-Circuit Limit I
SC
±10 ±15 mA
−40°C ≤ T
A
≤ +125°C ±10 mA
Output Current I
O
±10 mA
−40°C ≤ T
A
≤ +125°C ±5 mA
POWER SUPPLY
Power Supply Rejection Ratio PSRR V
S
= 2.7 V to 5.5 V, −40°C ≤ T
A
≤ +125°C 115 130 dB
Supply Current per Amplifier I
SY
V
O
= V
S
/2 0.75 1.0 mA
−40°C ≤ T
A
≤ +125°C 0.9 1.2 mA
INPUT CAPACITANCE C
IN
Differential 1.5 pF
Common Mode 8.0 pF
DYNAMIC PERFORMANCE
Slew Rate SR R
L
= 10 kΩ 1 V/μs
Overload Recovery Time 0.05 ms
Gain Bandwidth Product GBP 2 MHz
NOISE PERFORMANCE
Voltage Noise e
n
p-p 0.1 Hz to 10 Hz 0.5 μV p-p
Voltage Noise Density e
n
f = 1 kHz 22 nV/√Hz
Current Noise Density i
n
f = 10 Hz 5 fA/√Hz