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