MAX6190CESA+T

Overview

The MAX6190CESA+T is a precision, micropower, low-dropout series-mode bandgap voltage reference with a fixed output of 1.25V. It features an initial accuracy of ±6mV and a maximum temperature coefficient of 25ppm/°C. The device draws a maximum quiescent supply current of 35µA and supports source/sink currents up to 500µA. It operates within a supply voltage range of 2.5V to 12.6V, exhibits 8µV/V line regulation, and maintains stability with capacitive loads up to 2.2nF.

Feature Summary

• Proprietary curvature-correction circuit combined with laser-trimmed thin-film resistors ensures high initial accuracy and very low temperature coefficient.
• Internally compensated design provides fast settling times and stable operation with capacitive loads up to 2.2nF without requiring external compensation components.
• Series-mode architecture offers supply current virtually immune to input voltage variations, maximizing efficiency in battery-powered applications.

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 'CESA+T' against official documentation to confirm the package type (SOIC), temperature range (-40°C to +85°C), and lead-free/RoHS compliance status. Ensure the ordering code matches the required initial accuracy grade (+6mV) and output voltage (1.25V). Cross-reference manufacturer part numbering guidelines to validate any tape-and-reel or packaging specifications associated with the trailing characters.

Selection Notes

Select this component for applications requiring a fixed 1.25V reference with micropower consumption under 35µA. It is suitable for designs needing low dropout performance at 500µA load currents and stability with capacitive loads up to 2.2nF. Consider the ±6mV initial accuracy and 25ppm/°C temperature coefficient limits when determining if the precision meets system requirements compared to tighter tolerance variants like the MAX6190A or B.

Part Context

This device belongs to the MAX6190–MAX6195/MAX6198 family of precision, micropower, low-dropout voltage references manufactured by Analog Devices Inc./Maxim Integrated. The family utilizes series-mode bandgap technology with proprietary curvature correction. These devices are designed for battery-powered instruments and industrial systems where low power consumption and high accuracy are critical.

Replacement Considerations

Other members of the MAX6190 family offer different output voltages and accuracy grades. For example, MAX6190AESA+ provides ±2mV accuracy, while MAX6190BESA+ offers ±4mV accuracy. All share the same 1.25V output, SOIC-8 package, and electrical characteristics regarding current and dropout voltage.

FAQ

What is the capacitive-load stability range for the MAX6190CESA+T?

The device is internally compensated and stable with capacitive loads ranging from 0 to 2.2nF.

How does the supply current behave with respect to input voltage variations?

The quiescent supply current is virtually immune to input voltage variations, changing by only 0.8µA/V across the operating range.

What is the maximum dropout voltage specified for this device?

The maximum dropout voltage is 100mV at a 500µA load current.