AD8538 Analog Devices, AD8538 Datasheet - Page 10

• 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
Figure 17. AD8538 Closed-Loop Output Impedance vs. Frequency
Figure 18. AD8538 Small Signal Overshoot vs. Load Capacitance
1000
0.01
100
0.1
10
60
50
40
30
20
10
1
0
100
1
V
A
C
R
Figure 19. AD8538 Small Signal Transient Response
V
V
T
R
SY
V
L
L
SY
A
SY
L
= 1
= 300pF
= 2kΩ
= 25°C
= 2kΩ
= 5V AND 2.7V
= 5V AND 2.7V
= 5V
A
V
A
V
= 100
A
= 10
V
1k
= 1
LOAD CAPACITANCE (pF)
10
TIME (4µs/DIV)
FREQUENCY (Hz)
10k
100
100k
OS+
OS–
1000
1M
Rev. A | Page 10 of 24
–100
–2.5
100
2.5
0
0
0
0
V
A
C
R
Figure 20. AD8538 Large Signal Transient Response
SY
V
L
L
V
A
V
A
Figure 22. AD8538 Negative Overload Recovery
Figure 21. AD8538 Positive Overload Recovery
SY
= 1
= 300pF
= 10kΩ
SY
V
V
= 5V
= –50
= –50
= 5V
= 5V
TIME (4µs/DIV)
TIME (10µs/DIV)
TIME (10µs/DIV)