Datasheet

AD8538/AD8539 Data Sheet
Rev. B | Page 4 of 24
@ V
S
= 2.7 V, V
CM
= 1.35 V, V
O
= 1.35 V, T
A
= 25°C, unless otherwise specified.
Table 2.
Parameter Symbol Conditions Min Typ Max Unit
INPUT CHARACTERISTICS
Offset Voltage V
OS
5 13 µV
−40°C ≤ T
A
≤ +125°C 30 µV
Input Bias Current
I
B
15
25
pA
−40°C ≤ T
A
≤ +85°C 35 100 pA
−40°C ≤ T
A
≤ +125°C 0.7 1.0 nA
Input Offset Current I
OS
20 50 pA
−40°C ≤ T
A
≤ +125°C 150 pA
Input Voltage Range
0
2.7
V
Common-Mode Rejection Ratio CMRR V
CM
= 0 V to 2.5 V 110 140 dB
−40°C ≤ T
A
≤ +125°C 100 135 dB
Large Signal Voltage Gain A
VO
R
L
= 10 kΩ, V
O
= 0.1 V to 1.7 V 110 140 dB
−40°C ≤ T
A
≤ +125°C 105 135 dB
Offset Voltage Drift
∆V
OS
/∆T
−40°C ≤ T
A
≤ +125°C 0.03 0.1 µV/°C
OUTPUT CHARACTERISTICS
Output Voltage High V
OH
R
L
= 100 kΩ to ground 2.68 2.698 V
−40°C ≤ T
A
≤ +125°C, R
L
= 100 kΩ to ground
2.68
V
R
L
= 10 kΩ to ground 2.67 2.68 V
−40°C ≤ T
A
≤ +125°C, R
L
= 10 kΩ to ground 2.66 V
Output Voltage Low V
OL
R
L
= 100 kΩ to V+ 1.7 5 mV
−40°C ≤ T
A
≤ +125°C, R
L
= 100 kΩ to V+ 2.4 5 mV
R
L
= 10 kΩ to V+ 14 20 mV
−40°C ≤ T
A
≤ +125°C, R
L
= 10 kΩ to V+ 20 25 mV
Short-Circuit Limit I
SC
±8 mA
POWER SUPPLY
Power Supply Rejection Ratio PSRR V
S
= 2.7 V to 5.5 V 105 125 dB
−40°C ≤ T
A
≤ +125°C 100 125 dB
Supply Current/Amplifier I
SY
I
O
= 0 150 180 µA
−40°C ≤ T
A
≤ +125°C 190 215 µA
DYNAMIC PERFORMANCE
Slew Rate SR R
L
= 10 kΩ 0.35 V/µs
Settling Time 0.01% t
S
G = ±1, 1 V step, C
L
= 20 pF, R
L
= 1 kΩ 5 μs
Overload Recovery Time 0.05 ms
Gain Bandwidth Product GBP 430 kHz
Phase Margin Ø
M
R
L
= 10 kΩ, R
L
= 100 kΩ, C
L
= 20 pF 65 Degrees
NOISE PERFORMANCE
Voltage Noise
e
n p-p
f = 0.1 Hz to 10 Hz
2.0
µV p-p
Voltage Noise Density e
n
f = 1 kHz 50
nV/√Hz