MAX6190BESA+

Overview

The MAX6190BESA+ is a precision, micropower, low-dropout voltage reference manufactured by Analog Devices Inc./Maxim Integrated. It provides a fixed output voltage of 1.25V with an initial accuracy of ±2mV and a maximum temperature coefficient of 4ppm/°C. The device operates within a supply voltage range of 2.5V to 12.6V and draws a maximum quiescent supply current of 35µA. It supports source and sink currents up to 500µA with guaranteed load regulation. The component is housed in an 8-pin SO package and functions reliably across an operating temperature range of -40°C to +85°C.

Feature Summary

• Utilizes proprietary curvature-correction circuitry and laser-trimmed thin-film resistors for high precision
• Features internally compensated design ensuring stability with capacitive loads up to 2.2nF
• Offers virtually input-voltage-immune supply current for optimized battery-powered efficiency
• Capable of sourcing and sinking load currents up to 500µA with minimal dropout voltage

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 'ESAT' or similar tape-and-reel indicators if reel packaging is required, as standard ordering may default to tube. Confirm RoHS compliance status via the '+' designation in the part number. Ensure the input voltage source can provide transient currents exceeding nominal levels during turn-on to guarantee reliable operation.

Selection Notes

Select this component when a fixed 1.25V reference with high initial accuracy is required. It is suitable for applications demanding low power consumption and immunity to input voltage variations. Consider the 8-pin SO package constraints and ensure the load capacitance remains within the specified stability range for optimal transient response.

Part Context

This device belongs to the MAX6190–MAX6195/MAX6198 family of precision voltage references. These series-mode bandgap references share common architectural features such as micropower operation and low dropout characteristics. The MAX6190 variant specifically targets the 1.25V output segment of this portfolio, offering distinct accuracy grades compared to higher voltage counterparts.

Replacement Considerations

Other members of the MAX619x family (e.g., MAX6191, MAX6192) offer different fixed output voltages but share identical pinouts and electrical characteristics regarding current and stability.