TI Intros Logarithmic Amplifier

TUCSON, Ariz. -- Providing the precision signal measurement demanded in high-volume optical networking, industrial and medical laboratory applications, Texas Instruments (TI) Incorporated (NYSE: TXN) today introduced a low-power logarithmic amplifier which computes the logarithm or log ratio of an input current relative to a reference or second input current. (See www.amplifier.ti.com/hpl7736u). The unique LOG102 features low supply voltages, wide input dynamic range, excellent AC stability and two uncommitted on-chip op amps to provide unparalleled design flexibility and accuracy for laser diode monitoring, optical signal compression and absorbance measurement. Optical networking applications require measurement of very wide dynamic range due to signal variation through fiber-optic cables and laboratory applications require precise logarithmic measurements. The LOG102 features a complete solution for compressing many decades of signal strength as well as accurately measuring the ratio of two photodiode currents. "In response to high demand in the optical network market, TI has developed this new generation of a highly successful and unique analog circuit," said John Brown, strategic marketing engineer for TI's high- performance linear products. Texas Instruments Inc.