New Industry Products

Texas Instruments Announces Two New Families of 1.8V Single-Supply Op Amps

August 20, 2000 by Jeff Shepard

Two new families of 1.8V, single-supply, rail-to-rail operational amplifiers from Texas Instruments (Dallas, TX) give designers of portable and hand-held systems the ability to increase battery life without sacrificing the amplifier's performance. The first family of amplifiers operates as low as 1.8V, and the second family of amplifiers operates off of 20uA of supply current with a bandwidth of 500kHz.

The first family of TLV278x amplifiers provides a unity-gain stable 8MHz bandwidth, enabling designers to either use fewer amplifiers in the signal chain or use the available excess loop-gain over a wider frequency range. The TLV278x devices also provide an increase in excess loop-gain of up to 20dB.

According to the company, the combination of wide bandwidth, low noise and low distortion in the TLV278x devices make them ideal for low-voltage, ac-centric applications such as analog-to-digital converters and portable audio-signal conditioning. The devices' high-input impedance leads to very small input-bias currents of only 2.5pA, giving low offset errors when interfaced to sensors with a high-output impedance.

The second family of TLV276x amplifiers offers a speed-to-power combination by operating off of a 20uA of supply current per channel with a relatively wide bandwidth of 500kHz. The TLV276x devices, in shutdown mode, consume 0.01uA of current, adding value to portable systems by conserving battery power.

"These two families of amplifiers set new standards in the industry for low-power consumption, longer battery life and high performance over a very broad range of applications. Whether designers place a priority on high bandwidth, low power, or both, these amplifiers can be used in applications where any of these requirements are a top priority," said Gary Reichmuth, strategic marketing manager for Texas Instrument's precision analog products.