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