ad8138-ep Analog Devices, Inc., ad8138-ep Datasheet - Page 8

• Manufacturer Part Number: ad8138-ep
• Description: Low Distortion Differential Adc Driver Ad8138-ep
• Manufacturer: Analog Devices, Inc.

AD8138-EP
MAXIMUM OUTPUT VOLTAGE SWING
The maximum output voltage swing must be considered in order
for the AD8138-EP to remain current density compliant over
the extended temperature range. The maximum output swing
is dependent on the load resistance and operating temperatures.
Figure 4 shows the maximum output swing over operating
temperatures for various loads at ±5 V operation.
The following equation can be used to determine the maximum
output voltage swing for V
where:
Output is the maximum output voltage swing that cannot exceed
7.75 V p-p.
R
T
Figure 4. Differential Output Voltage Swing vs. Ambient Temperature, V
L
A
is the load resistance (Ω).
is the ambient temperature (°C).
Output = (38.21 × ln(R
8
7
6
5
4
3
25
V
V
S
OUT
35
= ±5V
MAX = 7.75V p-p
45
AMBIENT TEMPERATURE (°C)
55
S
= ±5 V:
L
) − 169.26) ×
65
75
85
e
(
−
95
. 0
0293
R
R
R
R
105
×
T
L
L
L
L
A
= 6.8kΩ
= 2kΩ
= 1kΩ
= 500Ω
)
115
S
= ±5 V
Rev. 0 | Page 8 of 12
Figure 5 shows the maximum output swing over operating
temperatures for various loads at V
The following equation can be used to determine the maximum
output voltage swing for V
where:
Output is the maximum output voltage swing that cannot exceed
2.9 V p-p.
R
T
Figure 5. Differential Output Voltage Swing vs. Ambient Temperature, V
L
A
is the load resistance (Ω).
is the ambient temperature (°C).
Output = (24.36 × ln(R
2.6
2.2
1.8
1.4
3
25
V
V
S
OUT
35
= 5V
MAX = 2.9V p-p
45
AMBIENT TEMPERATURE (°C)
55
S
L
= 5 V:
) − 82.34) ×
65
75
S
= 5 V operation.
85
e
(
−
. 0
95
028
×
T
105
R
R
R
R
A
L
L
L
L
)
= 300Ω
= 200Ω
= 150Ω
= 100Ω
115
S
= 5 V