OPA354_16 Datasheet, PDF (17/44 Pages) Texas Instruments – 250-MHz, Rail-to-Rail I/O, CMOS Operational Amplifiers

www.ti.com
OPA354, OPA2354, OPA4354
SBOS233F – MARCH 2002 – REVISED JUNE 2016
Feature Description (continued)
The OPA354 provides peak currents up to 200 mA, which corresponds to the typical short-circuit current.
Therefore, an on-chip thermal shutdown circuit is provided to protect the OPA354 from dangerously high junction
temperatures. At 160°C, the protection circuit shuts down the amplifier. Normal operation resumes when the
junction temperature cools to below 140°C.
R₂
10kW
C₁
200pF
R₁
100kW
+5V
1mF
R₅
1W
OPA2354
R₃
100kW
+
-
2V In = 200mA
R₆
Out, as Shown
1W
OPA2354
R_SHUNT
1W
R₄
10kW
Laser Diode
Copyright © 2016, Texas Instruments Incorporated
Figure 31. Parallel Operation
8.3.5 Video
The OPA354 output stage is capable of driving standard back-terminated 75-Ω video cables, as shown in
Figure 32. By back-terminating a transmission line, it does not exhibit a capacitive load to its driver. A properly
back-terminated 75-Ω cable does not appear as capacitance; it presents only a 150-Ω resistive load to the
OPA354 output.
+5V
Video
In
75W
OPA354
75W
Video
Output
+2.5V
+2.5V
604W
604W
Copyright © 2016, Texas Instruments Incorporated
Figure 32. Single-Supply Video Line Driver
The OPA354 can be used as an amplifier for RGB graphic signals, which have a voltage of zero at the video
black level, by offsetting and AC-coupling the signal. See Figure 33.
Copyright © 2002–2016, Texas Instruments Incorporated
Submit Documentation Feedback
17
Product Folder Links: OPA354 OPA2354 OPA4354