Datasheet

Data Sheet AD8538/AD8539
Rev. B | Page 3 of 24
SPECIFICATIONS
AD8538 ELECTRICAL SPECIFICATIONS
@ V
S
= 5.0 V, V
CM
= 2.5 V, V
O
= 2.5 V, T
A
= 25°C, unless otherwise specified.
Table 1.
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 5 V
Common-Mode Rejection Ratio CMRR V
CM
= 0 V to 5 V 115 150 dB
−40°C ≤ T
A
≤ +125°C, V
CM
= 0.2 V to 4.8 V 100 135 dB
Large Signal Voltage Gain A
VO
R
L
= 10 kΩ, V
O
= 0.1 V to 4.9 V 115 141 dB
−40°C ≤ T
A
≤ +125°C 110 135 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 4.99 4.998 V
−40°C ≤ T
A
≤ +125°C, R
L
= 100 kΩ to ground 4.98 V
R
L
= 10 kΩ to ground 4.95 4.970 V
−40°C ≤ T
A
≤ +125°C, R
L
= 10 kΩ to ground 4.94 V
Output Voltage Low V
OL
R
L
= 100 kΩ to V+ 1.9 5 mV
−40°C ≤ T
A
≤ +125°C, R
L
= 100 kΩ to V+ 2.8 7 mV
R
L
= 10 kΩ to V+ 17 20 mV
−40°C ≤ T
A
≤ +125°C, R
L
= 10 kΩ to V+ 20 30 mV
Short-Circuit Limit I
SC
±25 mA
POWER SUPPLY
Power Supply Rejection Ratio PSRR V
S
= 2.7 V to 5.0 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 0.4 V/µs
Settling Time 0.01% t
S
G = ±1, 2 V step, C
L
= 20 pF, R
L
= 1 kΩ 10 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