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General Description

The MAX6043 precision voltage reference provides

accurate preset +2.5V, +3.3V, +4.096V, +5.0V, and +10V

reference voltages from up to +40V input voltages. The

MAX6043 features a proprietary temperature coefficient

curvature-correction circuit and laser-trimmed thin-film

resistors that result in a very low temperature coefficient

of 15ppm/°C (max) and excellent initial accuracy of 0.05%

(max). Low temperature drift and low noise make the

MAX6043 ideal for use with high-resolution A/D or D/A

converters.

The MAX6043 draws 320μA of supply current and sources 10mA or sinks 0.6mA of load current. The MAX6043

uses bandgap technology for low-noise performance

and excellent accuracy. The MAX6043 does not require

an output bypass capacitor for stability, and is stable

with capacitive loads up to 100μF. Eliminating the output

bypass capacitor saves valuable board area in spacecritical applications. The supply-independent, low supply

current makes the MAX6043 ideal for battery-operated,

high-performance systems.

The MAX6043 is available in a 6-pin SOT23 package

and operates over the automotive (-40°C to +125°C)

temperature range.

Applications

● Analog-to-Digital Converters

● Digital-to-Analog Converters

● Digital Voltmeters

● Voltage Regulators

● Threshold Detectors

Features

● +2.5V, +3.3V, +4.096V, +5.0V, or +10V Output

Voltages

● Excellent Temperature Stability: 15ppm/°C (max)

● Tight Initial Accuracy: 0.05% (max)

● Tiny SOT23 Package

● Wide +4.5V to +40V Supply Voltage Range

● Low Noise: 4μVP-P (typ at 2.5V Output)

● Short-Circuit Protected

● Wide Operating Temperature Range

-40°C to +125°C

● Stable with Capacitive Loads from 0 to 100μF

● No External Capacitors Required for Stability