Low-cost rail-to-rail amps deliver speed, precision

Linear Technology Corp. has introduced the LTC6087 and the LTC6088 low cost dual and quad amplifiers, which combine speed, precision and low power in a tiny DFN package.

Featuring rail-to-rail I/O stages, these amplifiers achieve 750?V (max) offset voltage, 14MHz GBW and 1pA bias current, while consuming only 1.25mA (max) per amplifier. The LTC6087 and LTC6088 offer 93dB (min) PSRR, and the large signal voltage gain of 136dB ensure gain linearity. The amplifiers also maintain a low frequency noise of just 5.8?Vp-p.

"High volume industrial applications, like portable test equipment, are both cost sensitive and performance driven," said Mike Kultgen, design manager in Linear Technology's signal conditioning group. "The LTC6087 and LTC6088 offer designers best-in-class specifications for general purpose operational amplifiers that are fully specified over the commercial (0 to 70°C) and extended (-40°C to 125°C) temperature range, making them attractive for a wide variety of applications."

The LTC6087 dual is offered in the 8-pin MSOP and tiny 3mm x 3mm DFN package. The DFN version includes a shutdown mode, enabling the amplifiers to further reduce their supply current to less than 1?A. The LTC6088 quad is available in the 16-pin SSOP and 5mm x 3mm DFN packages. 1,000-piece pricing starts at 91 cents each for the LTC6087 dual and $1.40 each for the LTC6088 quad.