OPA277U | Texas Instruments

Operational Amplifier, OPA277U, Texas Instruments

The OPA277U precision operational amplifier replaces the industry standard OP-177. The OPA277U offers improved noise, wider output voltage swing, and is twice as fast with half the quiescent current. Features include ultra-low offset voltage and drift, low bias current, high common-mode rejection, and high power supply rejection. The OPA277U operates from ±2-V to ±18-V supplies with excellent performance. Unlike most op amps that are specified at only one supply voltage, the OPA277U is specified for real-world applications; a single limit applies over the ±5-V (10-V) to ±15-V (30-V) supply range. High performance is maintained as the amplifier swings to the specified limits. Because the initial offset voltage (±20 µV, maximum) is so low, user adjustment is usually not required. The OPA277U provides external trim pins for special applications. The OPA277U is easy to use and free from phase inversion and the overload problems found in some other op amps. It is unity-gain stable and provides excellent dynamic behavior over a wide range of load conditions. The version features completely independent circuitry for lowest crosstalk and freedom from interaction, even when overdriven or overloaded.

Applications

• Analog input module
• Weigh scale
• Temperature transmitter
• Pressure transmitter
• Data acquisition (DAQ)
• Lab and field instrumentation
• Battery test