MAX6193BESA+

Overview

The MAX6193BESA+ is a precision, micropower, low-dropout series-mode voltage reference manufactured by Analog Devices / Maxim Integrated. It provides a nominal output voltage of 3.000V and is housed in an 8-pin SO package. The device features a maximum initial accuracy of ±5mV and a temperature coefficient of less than 5ppm/°C. Quiescent supply current is limited to a maximum of 35µA, with a dropout voltage of approximately 200mV at a 500µA load. It operates within a supply voltage range of VOUT + 0.2V to 12.6V and supports an operating temperature range from -40°C to +85°C.

Feature Summary

• Utilizes proprietary curvature-correction circuitry and laser-trimmed thin-film resistors for high precision
• Capable of sourcing and sinking up to 500µA while maintaining stability with capacitive loads up to 2.2nF
• Offers virtually constant quiescent supply current independent of input voltage variations

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 8-pin SO package configuration. Confirm that the '+' designation indicates lead-free and RoHS compliance status as per manufacturer specifications. Ensure the component meets the required thermal and electrical ratings for the intended application environment before finalizing procurement.

Selection Notes

Select this component when a stable 3V reference is required with minimal power consumption. The low dropout characteristic makes it suitable for battery-powered applications where input voltage may approach the output level. Verify that the load requirements do not exceed the 500µA source/sink capability to maintain specified regulation performance.

Part Context

This part belongs to the MAX6190–MAX6195/MAX6198 family of precision voltage references. The family shares common architectural features including micropower operation and low-dropout capabilities. Variations within the family primarily differ in output voltage levels and specific accuracy grades, allowing designers to choose the precise voltage needed without changing the fundamental interface or package type.

Replacement Considerations

Other members of the MAX619x family (e.g., MAX6192, MAX6194) offer similar electrical characteristics but different output voltages. Direct substitution requires matching the required output voltage specification alongside the package and temperature range constraints.