Two automotive-compliant precision op amps target low noise operation

Two precision operational amplifiers (op amps) targeting different signal frequency scenarios have been released by Diodes.

Both address the need for advanced signal conditioning in modern automotive designs. The low signal to noise ratio characteristics of the AS2376Q mean it is optimised for high frequency usage, such as in on-board chargers (OBCs), DC/DC converters, battery management system (BMS) implementations, pumps, airbags, position sensors and occupancy detection systems. 

The minimal quiescent current exhibited by the AS2333Q addresses functions that continue even when the vehicle is inactive, said Diodes.

A bandwidth of 5.5MHz enables the AS2376Q op amp to handle 50kHz signals without significant loss of signal accuracy. Its low input noise density (9.5nV/ÖHz) and 0.8 microV pp low frequency noise, coupled with rail to rail output, result in enhanced signal integrity. With five microV (typical) offset voltage, the AS2376Q supports a wide dynamic range, accepting voltages from 2.2 to 5.5V for greater design-in flexibility.

The AS2333Q op amp has a quiescent current of just 12 microA on each amplifier channel that allows it to be used in systems that have to remain live at all times. Excellent common mode rejection ratio (CMRR) across its rail to rail input range coupled with near-zero drift over time and temperature provide long term signal accuracy in wide common-mode rail precision applications, said Diodes. Its 1.8 to 5.5V supply voltage enables it to operate from 3.3 and 5V automotive rails. 

The AS2376Q and AS2333Q are supplied in the SO-8 package. Both are qualified to AEC-Q100 Grade 1, are manufactured in IATF 16949 certified facilities, and support PPAP documentation.

Diodes delivers semiconductor products to the world’s leading companies in the consumer electronics, computing, communications, industrial, and automotive markets. It has a product portfolio of discrete, analogue and mixed-signal products and packaging technology to meet customers’ needs. It has a broad range of application-specific solutions and solutions-focused sales, coupled with worldwide operations of 32 sites, including engineering, testing, manufacturing, and customer service.

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