NCS21914DTBR2G

Instrumentation, Op Amps, Buffer Amps Overview

The NCS21914DTBR2G is a quad-channel precision operational amplifier from the NCS2191x family, manufactured by onsemi. It features a chopper-stabilized architecture providing low input offset voltage of ±25 µV maximum and near-zero drift of ±0.085 µV/°C. The device operates with a supply voltage range of 4 V to 36 V and draws a maximum quiescent current of 570 µA per channel. Key electrical parameters include a unity gain bandwidth of 2 MHz, a slew rate of 1.6 V/µs, and a voltage noise density of 22 nV/√Hz. It offers rail-to-rail output swing within 10 mV of the rails and is housed in a TSSOP-14 package.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Chopper-stabilized zero-drift architecture minimizes offset voltage drift over temperature and time
• Rail-to-rail output capability swings within 10 mV of the supply rails
• Integrated low-pass filters reduce susceptibility to electromagnetic interference (EMI)
• Wide supply voltage operation ranging from 4 V to 36 V

Instrumentation, Op Amps, Buffer Amps Applications

• Low-side current sensing
• Wheatstone bridge circuit amplification for strain, pressure, and temperature sensors
• Medical instrumentation
• Electronic scales
• Automotive sensor interfaces

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific ordering suffix DTBR2G corresponds to the TSSOP-14 package and tape & reel shipping configuration as listed in the official onsemi ordering information. Confirm that the component meets RoHS compliance and halogen-free requirements. Ensure the application environment stays within the specified operating temperature range of -40 °C to +125 °C. Check for any site-specific control changes if automotive qualification under the NCV prefix is required instead of the standard NCS prefix.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when high precision and stability are required without the aliasing issues common in classical chopper amplifiers. The dual-path signal design retains high-frequency components up to 2 MHz while correcting low-frequency offsets. Consider the quad-channel configuration for space-constrained designs requiring multiple precision amplifiers. Evaluate the EMI rejection performance if the application involves noisy environments or long input traces.

Instrumentation, Op Amps, Buffer Amps Part Context

This part belongs to the NCS2191x family of high-precision op amps, which includes single (NCS21911), dual (NCS21912), and quad (NCS21914) channel variants. The family shares identical electrical characteristics and architectural features, differing only in channel count and package options such as SOT-23-5, SOIC-8, Micro-8, SOIC-14, and TSSOP-14. Automotive qualified versions are available with the NCV prefix.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Direct functional substitutes within the same family include NCS21914DR2G (SOIC-14 package). For automotive applications, consider NCV21914DTBR2G. Cross-family replacements require verification of pin compatibility and electrical parameter alignment.