AS2376S-13

Overview

The AS2376S-13 is a dual-channel precision operational amplifier manufactured by Diodes Incorporated, housed in an SO-8 surface-mount package. It features a gain bandwidth product of 5.5 MHz and operates within a supply voltage range of 2.2V to 5.5V. The device exhibits low noise characteristics with a spectral density of 9.5nV/√Hz at 1kHz and a maximum input offset voltage of 25μV. Quiescent current per amplifier is typically 760μA, with a maximum of 950μA. It supports rail-to-rail input and output capabilities and functions reliably across an ambient temperature range of -40°C to +125°C.

Feature Summary

• Precision optimized using post-package trim for low offset voltage
• Rail-to-rail input and output capability for single-supply operation
• Low noise performance suitable for noise-sensitive applications
• Capable of driving capacitive loads up to 250 picofarads at unity gain

Applications

• Auto pumps
• Position sensors
• Vehicle occupant detection sensors
• Airbags
• Onboard charges (OBC)
• DC-DC converters
• Battery management systems (BMS)

Procurement Notes

Verify the ordering suffix matches the required package type; 'S' indicates the SO-8 variant. Confirm that the tape and reel packing quantity aligns with production requirements. Ensure the component meets specific automotive or industrial reliability standards if applicable, as standard versions differ from automotive-compliant variants like the AS2376Q. Validate lead-free and RoHS compliance status against project specifications before finalizing procurement orders.

Selection Notes

Select this component when high bandwidth combined with low offset voltage is critical, distinguishing it from chopper-stabilized amplifiers with lower bandwidth limits. Consider the rail-to-rail input/output feature for maximizing dynamic range in single-supply designs. Evaluate thermal resistance values for PCB layout planning, particularly regarding junction-to-ambient thermal resistance in the SO-8 package. Ensure the operating supply voltage remains within the specified 2.2V to 5.5V range for optimal performance.

Part Context

The AS2376 series belongs to Diodes Incorporated's portfolio of low-noise, low quiescent current precision operational amplifiers. Designed for filtering and control applications, these devices utilize post-package trimming to achieve microvolt-level offset voltages without sacrificing bandwidth. The series includes variants such as the MSOP-8 packaged AS2376M8-13 and the automotive-grade AS2376Q, offering flexibility for different packaging and reliability requirements.

Replacement Considerations

For automotive applications requiring higher reliability standards, consider the AS2376Q. For compact board space requirements, the AS2376M8-13 provides equivalent electrical performance in an MSOP-8 package. Verify pin compatibility and thermal characteristics when substituting with other dual-channel op-amps.

FAQ

How does the AS2376 handle large capacitive loads?

The AS2376 can drive a 250 picofarad load at unity gain directly. For larger capacitive loads, a nulling resistor between 10Ω and 20Ω should be inserted in series with the load capacitor to prevent oscillation.

What is the impact of common-mode voltage on offset voltage?

The precision offset voltage is optimized at a common mode of one half of the supply voltage. As the input common-mode voltage approaches approximately one volt less than the positive supply, the offset may increase due to the transition between PMOS and NMOS input differential pairs.