AD8538 Analog Devices, AD8538 Datasheet - Page 12

• Manufacturer Part Number: AD8538
• Description: Low Power, Precision, Auto-Zero Op Amp (5-lead TSOT-23)
• Manufacturer: Analog Devices

Specifications of AD8538

• -3db Bandwidth: 430kHz
• Slew Rate: 0.4V/µs
• Vos: 5µV
• Ib: 15pA
• # Opamps Per Pkg: 1
• Input Noise (nv/rthz): 50nV/rtHz
• Vcc-vee: 2.7V to 5.5V
• Isy Per Amplifier: 180µA
• Packages: SOIC,SOT

AD8538/AD8539
V = 2.7 V or ±1.35 V, AD8538 only, unless otherwise noted.
Figure 28. AD8538 Input Offset Voltage vs. Input Common-Mode Voltage
SY
180
160
140
120
100
–10
80
60
40
20
35
30
25
20
15
10
10
–2
–4
–6
–8
Figure 27. AD8538 Input Offset Voltage Drift Distribution
–10.0 –8.4 –6.8 –5.2 –3.6 –2.0 –0.4 1.2 2.8 4.4 6.0 7.6 9.2
0
5
0
8
6
4
2
0
0
Figure 26. AD8538 Input Offset Voltage Distribution
0
V
T
V
0V < V
T
SY
A
A
SY
= 25°C
= 25°C
0.012 0.024 0.036 0.048 0.060 0.072 0.084 0.096
= 2.7V
= 2.7V
CM
0.5
< 2.7V
INPUT COMMON-MODE VOLTAGE (V)
INPUT OFFSET VOLTAGE (µV)
1.0
TCV
OS
(µV/°C)
1.5
V
–40°C < T
SY
2.0
= 2.7V
A
< +125°C
2
.5
Rev. A | Page 12 of 24
Figure 31. AD8538 Small Signal Overshoot vs. Load Capacitance
10000
Figure 29. AD8538 Output Saturation Voltage vs. Load Current
Figure 30. AD8538 Output Saturation Voltage vs. Temperature
1000
100
0.1
30
25
20
15
10
10
80
70
60
50
40
30
20
10
0.001
1
5
0
0
–40
1
V
T
R
V
R
V
T
SY
A
A
SY
L
L
SY
–25
= 10kΩ
= 25°C
= 2kΩ
= 25°C
= 2.7V
= 2.7V
= 2.7V
–10
SOURCE
5
LOAD CAPACITANCE (pF)
0.01
V
10
LOAD CURRENT (mA)
SY
TEMPERATURE (°C)
20
= VOH
35
SINK
50
VOL
65
100
0.1
OS+
OS–
80
95
110
1000
125
1