1 Features

• Ultra-low offset drift: ±0.02μV/°C

• Flat low frequency noise: 0.3μVPP (0.1 to 10Hz)

• Ultra-low offset: ±4μV

• Rail-to-rail input and output

• Very high AOL, CMRR, PSRR: > 120dB

• Wide input common-mode: 100mV beyond rails

• Low input bias current: ±100pA

• Low thermal noise floor: 15nV/√Hz

• Wide gain bandwidth: 3.5MHz

• High CL drive: 1nF (no sustained oscillations)

• Low quiescent current: 500μA/channel

• Wide supply range: 1.8V to 5.5V

• Wide temperature range: –40°C to +125°C

2 Applications

• Sensor signal conditioning

– Weigh scales

– Pressure transmitters

– Temperature transmitters

– Flow transmitters

• Precision current sensing

– Merchant DC/DC

– Electricity meters

– Micro and solar inverters

3 Description

The TLVx825 family of single, dual, and quad channel operational amplifiers enable precision performance such as lower offset, lower offset drift over temperature, greater offset stability over time and a flat noise floor. This level of performance is crucial to a variety of systems focusing on precision voltage sensing from sensors and precision current sensing using smaller shunt resistors.

TLVx825 uses zero-drift architecture to achieve an input referred offset voltage of 4μV, an offset drift of 0.02μV/°C and a low frequency noise of 320nVPP in the standard 0.1 – 10Hz range. This combination of specs provides excellent accuracy in high gain applications, thereby greatly reducing the need for system level calibration.

Additionally, with a quiescent current of 500μA, the TLVx825 is able to achieve a bandwidth of 3.5MHz and a broadband noise of 15nV/√Hz. This ability is crucial to achieve higher linearity, and signal-tonoise ratio in applications involving higher resolution, mid-speed analog to digital converters (ADCs) while minimizing system power.

TLVx825 is operational from 1.8V to 5.5V, and is available in standard packages for broader industrial applications as well as the micro-size packages to fit in the space-constrained portable applications. The devices are specified for operation from –40°C to +125°C.