Datasheet

Data Sheet AD8538/AD8539
Rev. B | Page 15 of 24
06741-041
AD8539
10000
1000
100
10
1
0.1
OUTPUT SATURATION VOLTAGE (mV)
0.001 0.01 0.1 1 10 100
I
LOAD
(mA)
SINK, V
S
= ± 1.35V
SOURCE, V
S
= ± 2.5V
SOURCE, V
S
= ± 1.35V
SINK, V
S
= ± 2.5V
Figure 40. AD8539 Output Saturation Voltage vs. Load Current
35
30
25
20
15
10
5
0
OUTPUT SATURATION VOLTAGE (mV)
–40 –25 –10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
06741-042
AD8539
V
S
= 5V
V
DD
- V
OH
, I
L
= 250µA, R
L
= 10kΩ
V
DD
- V
OH
, I
L
= 25µA, R
L
= 100kΩ
V
OL
, I
L
= 250µA, R
L
= 10kΩ
V
OL
, I
L
= 25µA, R
L
= 100kΩ
Figure 41. AD8539 Output Saturation Voltage vs. Temperature
06741-043
60
40
20
0
–20
–40
CLOSED-LOOP GAIN (dB)
100 1k 10k 100k 1M 10M
FREQUENCY (Hz)
A
V
= 100
A
V
= 10
A
V
= 1
AD8539
V
SY
= ±2.5V
R
L
= 2kΩ
C
L
= 20pF
Figure 42. AD8539 Closed-Loop Gain vs. Frequency
06741-044
120
100
80
60
40
20
0
–20
–40
–60
–80
–100
–120
GAIN (Degrees)
120
100
80
60
40
20
0
–20
–40
–60
–80
–100
–120
PHASE (Degrees)
1k 10k 100k 1M 10M
FREQUENCY (Hz)
AD8539
V
SY
= ±2.5V
R
L
= 2kΩ
C
L
= 20pF
Figure 43. AD8539 Open-Loop Gain and Phase vs. Frequency
06741-045
140
120
100
80
60
40
20
0
CMRR (dB)
100 1k 10k 100k 1M 10M
FREQUENCY (Hz)
CHANNEL B
CHANNEL A
AD8539
V
SY
= ±2.5V
Figure 44. AD8539 CMRR vs. Frequency
06741-046
120
100
80
60
40
20
0
–20
PSRR (dB)
100 1k 10k 100k 1M 10M
FREQUENCY (Hz)
PSRR–
AD8539
V
SY
= ±2.5V
PSRR+
Figure 45. AD8539 PSRR vs. Frequency