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Linear Tech unveils 140V precision op amp

15 Sep 2015

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Linear Technology has introduced the LTC6090, an amplifier with up to 140V (or ±70V) supply voltage. It combines rail-to-rail output, 3pA input bias current, 1.6mV maximum input offset voltage and 3.5μVP-P low frequency noise required by high performance ATE, piezo driver and DAC buffer applications.

An enhanced slew rate of 19V/μs allows the LTC6090 an output to swing 140V in less than 8μs. It has a gain bandwidth product of 10MHz.

The LTC6090 is optimised for designs with high impedance inputs and those sensitive to leakage currents. In addition to a standard SO-8 package with exposed pad, the LTC6090 is available in a TSSOP package with guard pins. This allows a guard ring to be easily routed around the input to completely enclose it.

Thermal characteristics are a concern for any high voltage space-constrained system. To address these challenges, the LTC6090 delivers up to 3.9mA supply current and ±10mA output current. A thermal flag pin (TFLAG) signals when the device junction temperature exceeds 145°C. This pin can be connected to the Output Disable pin for active thermal management. Both TSSOP-16 and SOIC-8 package versions include an exposed pad to minimise thermal resistance.

The LTC6090 is available in three temperature range grades: 0°C to 70°C, -40°C to 85°C and -40°C to 125°C junction temperature. Prices start at $3.45 each in quantities of 1,000.

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