AD8538 Analog Devices, AD8538 Datasheet - Page 18

• 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, T = 25°C, AD8539 only, unless otherwise noted.
S
Figure 58. AD8539 Input Offset Voltage vs. Input Common-Mode Voltage
–10
–15
–20
350
300
250
200
150
100
20
15
10
–5
45
40
35
30
25
20
15
10
50
5
0
5
0
0
Figure 57. AD8539 Input Offset Voltage Drift Distribution
–10 –9 –8 –7 –6 –5 –4 –3 –2 –1 0 1 2 3 4 5 6 7 8 9 10
0
0
Figure 56. AD8539 Input Offset Voltage Distribution
0.3
0.016
0.6
0.032
A
0.9
TCV
1.2
0.048
V
CM
OS
V
OS
(V)
(µV)
1.5
0.064
1.8
AD8539
V
–40°C < T
SY
AD8539
V
0V < V
T
= ±1.35V
A
SY
0.080
AD8539
V
0V < V
T
= 25°C
2.1
A
SY
= 2.7V
= 25°C
A
CM
= 2.7V
< +125°C
CM
< 2.7V
2.4
0.096
< 2.7V
2.7
Rev. A | Page 18 of 24
Figure 60. AD8539 Small Signal Overshoot vs. Load Capacitance
Figure 59. AD8539 Output Saturation Voltage vs. Temperature
35
30
25
20
15
10
80
70
60
50
40
30
20
10
5
0
–40
0
1
AD8539
V
R
Figure 61. AD8539 Large Signal Transient Response
SY
L
–25
= 2kΩ
= ±1.35V
–10
V
DD
5
– V
OH
10
20
CAPACITANCE (pF)
V
TEMPERATURE (°C)
, R
TIME (4µs/DIV)
OL
V
L
, R
DD
= 10kΩ
35
L
– V
= 10kΩ
OH
50
, R
V
L
65
OL
= 100kΩ
100
, R
L
80
= 100kΩ
OS+
AD8539
V
A
C
R
SY
V
L
L
95
OS–
= 1
= 300pF
= 10kΩ
AD8539
V
= ±1.35V
SY
= 2.7V
110
125
1k