The OPA211 and OPA827 represent a new class of precision amplifiers and demonstrate TI’s commitment to the high-voltage industrial market, said Art George, senior vice president of TI’s high-performance analog business. These new amplifiers deliver extremely high accuracy with
significant improvements in power consumption, bandwidth and package size characteristics, which will enable next-generation performance in industrial applications.
The OPA211 is a bipolar-input operational amplifier that achieves 1.1 nV/rtHz voltage noise and 80 MHz gain bandwidth product (GBW) with a supply current of only 3.6 mA. The device provides 100 uV offset
voltage, 0.2 uV/degC offset voltage drift and less than 1 us settling time for driving precision analog-to-digital converters in data acquisition systems. It also offers rail-to-rail output swing, which
enhances dynamic range.
The OPA211 operates over a +/-2.25 V to +/-18 V supply range and is available in MSOP-8 or DFN-8 packages. The 3mm x 3mm DFN package requires about 1/3 the area of a standard SO-8 package. Bipolar op amps excel in limiting errors related to offset voltage and are used in applications where the source impedance is low.
The OPA827 is a JFET-input operational amplifier that combines outstanding DC precision with excellent AC performance. DC characteristics include 4.5 nV/rtHz voltage noise, 250 uV offset
voltage, 1 uV/degC offset voltage drift and 400 nVpp frequency noise. AC specifications include 18 MHz GBW, 22 V/µs slew rate and 0.0004 percent total harmonic distortion (THD) at 1 kHz.
The OPA827 operates over a +/-4 V to +/-18 V supply range with a supply current of only 4.5 mA. The MSOP-8 package represents a 50 percent reduction compared to SO-8 packages. JFET op amps offer very low bias current and are suited for applications where source impedance is high.
