MAX6192BESA

Overview

The MAX6192BESA+ is a precision, micropower, low-dropout series-mode voltage reference manufactured by Analog Devices Inc./Maxim Integrated. It provides a fixed output voltage of 2.500V with an initial accuracy of ±5mV and a maximum temperature coefficient of <10ppm/°C. The device operates within a supply voltage range of 2.7V to 12.6V and draws a maximum quiescent current of 35µA. It features a dropout voltage of 100mV at a 500µA load current and supports capacitive loads up to 2.2nF without external compensation.

Feature Summary

• Proprietary curvature-correction circuit combined with laser-trimmed thin-film resistors ensures high initial accuracy and very low temperature coefficient.
• Micropower design with a maximum quiescent supply current of 35µA that remains virtually immune to input voltage variations.
• Low-dropout architecture capable of sourcing and sinking up to 500µA while maintaining stability with capacitive loads up to 2.2nF.

Applications

• Hand-Held Instruments
• Analog-to-Digital and Digital-to-Analog Converters
• Industrial Process Control
• Precision 3V/5V Systems
• Hard-Disk Drives

Procurement Notes

Verify the specific suffix 'ES' corresponds to the standard SO-8 package and the '+' indicates RoHS compliance when ordering. Confirm the operating temperature range requirements match the industrial specification (-40°C to +85°C). Ensure the input voltage source can provide sufficient current during turn-on transients to guarantee reliable operation.

Selection Notes

Select this component for applications requiring a stable 2.5V reference with minimal power consumption. The low dropout voltage makes it suitable for battery-powered systems where input voltage may approach the output level. Verify that the required load current does not exceed the 500µA sourcing/sinking capability to maintain specified regulation performance.

Part Context

This part belongs to the MAX6190–MAX6195/MAX6198 family of precision voltage references. All members share identical pinouts, package options, and core architectural features, differing primarily in their factory-lasered output voltage setpoints and associated accuracy grades.

Replacement Considerations

Other members of the MAX6190–MAX6195/MAX6198 family are pin-compatible replacements if different output voltages are acceptable. Cross-referencing should focus on matching the required output voltage, accuracy grade, and temperature coefficient specifications.

FAQ

Does the MAX6192 require an external capacitor for frequency stability?

No, the device is internally compensated and stable with capacitive loads ranging from 0 to 2.2nF. An external capacitor is optional and primarily used to reduce overshoot or undershoot during transient load changes.

How does the supply current behave relative to input voltage changes?

The quiescent supply current is virtually independent of the supply voltage, varying by only 0.8µA/V across the operating range. This contrasts with shunt-mode references where current varies directly with input voltage.