Datasheet AD8138-EP (Analog Devices) - 8

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AD8138-EP MAXIMUM OUTPUT VOLTAGE SWING
Figure 5 shows the maximum output swing over operating The maximum output voltage swing must be considered in order temperatures for various loads at VS = 5 V operation. for the AD8138-EP to remain current density compliant over
3
the extended temperature range. The maximum output swing
p-p) V
is dependent on the load resistance and operating temperatures.
( RL = 300Ω G
Figure 4 shows the maximum output swing over operating
IN W 2.6 S
temperatures for various loads at ±5 V operation.
E G A T RL = 200Ω 8 L O p-p) V 2.2 V R T ( L = 6.8kΩ U G 7 TP IN RL = 150Ω W OU S L E RL = 2kΩ G 1.8 TIA A T 6 N L E R O E VS = 5V V V T OUT MAX = 2.9V p-p R IFF L = 100Ω U RL = 1kΩ D 5 1.4 TP
05
25 35 45 55 65 75 85 95 105 115
0 7- 99
OU AMBIENT TEMPERATURE (°C) L
08
TIA
Figure 5. Differential Output Voltage Swing vs. Ambient Temperature, V
4
S = 5 V
N E R R L = 500Ω E VS = ±5V V
The following equation can be used to determine the maximum
OUT MAX = 7.75V p-p IFF D 3
4 output voltage swing for VS = 5 V:
25 35 45 55 65 75 85 95 105 115
00 7-
AMBIENT TEMPERATURE (°C)
99 ( 0 − .028 T ) A 08 Output = (24.36 × ln(RL) − 82.34) × e × Figure 4. Differential Output Voltage Swing vs. Ambient Temperature, VS = ±5 V where: The following equation can be used to determine the maximum Output is the maximum output voltage swing that cannot exceed output voltage swing for VS = ±5 V: 2.9 V p-p. Output = (38.21 × ln(R ( 0 − 0293 . T ) RL is the load resistance (Ω). L) − 169.26) × A e × TA is the ambient temperature (°C). where: Output is the maximum output voltage swing that cannot exceed 7.75 V p-p. RL is the load resistance (Ω). TA is the ambient temperature (°C). Rev. 0 | Page 8 of 12 Document Outline FEATURES ENHANCED PRODUCT FEATURES APPLICATIONS GENERAL DESCRIPTION PIN CONFIGURATION TYPICAL APPLICATION CIRCUIT TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ±DIN TO ±OUT SPECIFICATIONS VOCM TO ±OUT SPECIFICATIONS ±DIN TO ±OUT SPECIFICATIONS VOCM TO ±OUT SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE MAXIMUM POWER DISSIPATION ESD CAUTION MAXIMUM OUTPUT VOLTAGE SWING PIN CONFIGURATION AND FUNCTION DESCRIPTIONS OUTLINE DIMENSIONS ORDERING GUIDE