A new family of high-performance CMOS operational amplifiers (op amps) from Texas Instruments (TI) having the highest bandwidth and fastest slew rate operating in the 1-mA/channel supply range was announced. The new devices offer outstanding AC performance in combination with rail-to-rail output swing, excellent DC precision and high output drive making them ideal for today's demanding telecommunications, industrial, automotive, measurement and medical applications.

"This family of devices has unparalleled AC performance for CMOS op amps operating from 1 mA of supply current per channel. Their high bandwidth and fast slew rate is comparable to the performance of BiFETs without the need for split supply. They make excellent signal conditioning amplifiers or reference inputs for analog-to-digital (A/D) converters in a wide range of applications," said TI product specialist, James Zell.

Unique Range of Features Enable Applications

The new devices, TLV277x CMOS op amp family, features a very high 10.5 V/us slew rate coupled with 5.1 MHz of bandwidth. The rail-to-rail output swing and high output drive make this family of devices a good choice for driving the analog input or reference of analog-to-digital converters. Low distortion while driving a 600ohm load makes the TLV277x family well-suited for use in telecommunications systems.

The amplifiers' 360 uV input offset voltage, 17 nV/rootHz input noise voltage and 2 pico amp input bias current, provide excellent DC precision and high signal-to-noise ratio, making them attractive for measurement, medical and industrial applications. The family is characterized over a temperature range of -40ýC to 125ýC, ideal for harsh automotive and industrial applications.

I haven't seen performance like this before from a single-rail operational amplifier. The slew rate is outstanding and the device noise is really low and I would expect to see numerous design wins in instrumentation and medical imaging acquisition systems There will also be applications in the low signal areas in wireless equipment and handheld appliances. The range offered, with singles, duals and quads with and without sleep mode shutdown -- a total of six devices -- will cover the vast majority of designs. The bandwidth is OK for these applications.