AD8538 Analog Devices, AD8538 Datasheet - Page 15

• 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

10000
1000
Figure 40. AD8539 Output Saturation Voltage vs. Load Current
Figure 41. AD8539 Output Saturation Voltage vs. Temperature
–20
–40
100
35
30
25
20
15
10
0.1
60
40
20
–40
10
5
0
0.001
0
100
1
AD8539
V
A
Figure 42. AD8539 Closed-Loop Gain vs. Frequency
A
S
AD8539
–25
A
V
V
= 5V
V
= 100
SOURCE, V
= 10
= 1
V
–10
DD
0.01
1k
- V
OH
5
S
, I
V
= ± 1.35V
DD
L
TEMPERATURE (°C)
20
= 25µA, R
- V
FREQUENCY (Hz)
10k
0.1
SINK, V
OH
I
35
LOAD
, I
L
V
L
= 250µA, R
OL
S
50
= 100kΩ
(mA)
V
SOURCE, V
= ± 1.35V
OL
, I
100k
L
, I
1
= 250µA, R
65
L
= 25µA, R
SINK, V
L
= 10kΩ
80
S
= ± 2.5V
L
S
1M
L
95
AD8539
V
R
C
10
= 10kΩ
= ± 2.5V
SY
L
L
= 100kΩ
= 2kΩ
= 20pF
= ±2.5V
110
125
10M
100
Rev. A | Page 15 of 24
–100
–120
120
100
–20
–40
–60
–80
80
60
40
20
140
120
100
120
100
–20
0
1k
Figure 43. AD8539 Open-Loop Gain and Phase vs. Frequency
80
60
40
20
80
60
40
20
0
0
100
100
AD8539
V
R
C
SY
L
L
= 2kΩ
= 20pF
= ±2.5V
Figure 44. AD8539 CMRR vs. Frequency
Figure 45. AD8539 PSRR vs. Frequency
PSRR+
1k
1k
10k
PSRR–
CHANNEL B
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
10k
10k
100k
CHANNEL A
100k
100k
AD8538/AD8539
1M
1M
1M
AD8539
V
AD8539
V
SY
SY
= ±2.5V
= ±2.5V
10M
10M
10M
120
100
80
60
40
20
0
–20
–40
–60
–80
–100
–120