Related Product Information

In This Issue
   DSP Solutions
New FLEX decoders support
  roaming, numeric-only designs
DSP pioneers to receive first
  Kilby Award
x2 is the clear 56K choice
x2: special delivery

   Logic
Focus on Logic Ideas
A wealth of technical information

   Memory
Flash!

   Support
MCK240 tools speed DMC
  development
Semiconductor Product
  Information Center

   App Report
TMS320C54x DSP programming
  environment

   News Briefs
LVDS line driver, receiver
Power interface for PC cards
300-dpi linear sensor array
A/D CCD interfaces
Low-voltage opto-isolated
  feedback amps
High-speed 2-A MOSFET drivers

Trade Shows

The new TPS5908 and TPS5910 opto-isolated feedback amplifiers make the design of isolated feedback loops for 3.3-V switch mode power supplies easier and more cost-effective. The devices act as comparators with optically coupled output, combining the TLV431 1.24-V programmable voltage reference and an opto-coupler in the same package for reduced component count and space savings. The '5910 is identical to the '5908, with the added feature of having the phototransistor brought out to an external pin for greater flexibility.

Both of these devices are available in two ranges of current transfer ratio (CTR): 100 to 400 percent CTR (standard) and 100 to 300 percent CTR ("A" version).

Features

• Provides error/reference/isolation amplification in isolated 3.3-V AC-DC power supplies and DC-DC converters
  
• 1.24-V programmable voltage reference with 1-percent tolerance
  
• 940-nm GaAs LED with 1.2-V typical forward voltage