OPA2140AIDGKT

Instrumentation, Op Amps, Buffer Amps Overview

The OPA2140AIDGKT is a dual-channel precision operational amplifier manufactured by Texas Instruments, featuring J-FET inputs and rail-to-rail output capability. It operates within a supply voltage range of 4.5 V to 36 V. Key electrical specifications include an input offset voltage of 30 µV, a gain-bandwidth product of 11 MHz, and a slew rate of 20 V/µs. The device draws 1.8 mA of operating current per channel and provides 36 mA of output current. It exhibits low input bias current of 500 fA and high common-mode rejection ratio of 140 dB. The component is housed in an 8-pin VSSOP package and supports operation temperatures from -40°C to +125°C.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Dual-channel architecture with J-FET input stage for low noise and high impedance
• Rail-to-rail output swing capability across the full supply voltage range
• Integrated shutdown function for power management
• Precision performance characterized by low input offset voltage and bias current

Instrumentation, Op Amps, Buffer Amps Applications

• Battery-powered instrumentation systems requiring low quiescent current
• High-accuracy data acquisition front-ends
• Active filtering circuits in signal conditioning chains
• Industrial process control sensor interfaces

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific suffix 'GKT' corresponds to the VSSOP-8 tape-and-reel packaging configuration as indicated by distributor listings. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure ESD handling protocols are followed due to the sensitivity of J-FET input structures. Cross-reference the part number against the latest Texas Instruments datasheet revision history to validate any recent design or specification updates.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when dual-channel precision amplification with rail-to-rail output is required alongside low power consumption. The J-FET input stage offers superior bias current performance compared to bipolar alternatives, making it suitable for high-impedance sources. Consider the 11 MHz bandwidth and 20 V/µs slew rate for moderate-speed applications. The VSSOP-8 package is appropriate for space-constrained designs requiring surface-mount assembly.

Instrumentation, Op Amps, Buffer Amps Part Context

The OPA2140 belongs to the OPA140 family of precision amplifiers, which includes single (OPA140), dual (OPA2140), and quad (OPA4140) variants. These devices share similar electrical characteristics but differ in channel count and package options. The OPA2140AIDGKT specifically denotes the dual-channel version in a VSSOP-8 reel package. This family is designed for applications demanding low noise, low distortion, and high accuracy in single-supply environments.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Direct pin-compatible substitutes within the same family include OPA140 (single channel) and OPA4140 (quad channel) if channel count adjustments are acceptable. Verify that alternative packages such as SOIC or DIP meet mechanical constraints. Ensure replacement parts maintain equivalent J-FET input characteristics and rail-to-rail output capabilities.