JAJSMX0 September 2020 INA848
PRODUCTION DATA
The INA848 is designed with TI's modern bipolar process that features super-beta input transistors.
Traditional bipolar transistors feature excellent voltage noise and offset drift, but suffer a tradeoff in high input bias current and high input bias current noise.
TI`s super-beta transistors offer the benefits of low voltage noise, low offset voltage drift with an additional improvement in reduction of the input bias current noise.
As shown in Figure 8-1, the INA848 is designed with a current feedback input stage that is optimized for high bandwidth in high gains. The device consists of three operational amplifiers configured at the front with a gain stage that integrates the gain resistor. This input stage preamplifies the differential input signal at a gain of 200. The output stage with the difference amplifier provides additional amplification of a gain of 10.