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The MAX6126BASA25 is an ultra-low-noise, high-accuracy, low-dropout reference voltage source. This series of reference voltage sources incorporates curvature correction circuitry and features high-stability, laser-trimmed thin-film resistors with a temperature coefficient as low as 3ppm/°C (maximum), delivering outstanding initial accuracy of ±0.02% (maximum). The proprietary low-noise reference architecture delivers low flicker noise of 1.3µV p-p and broadband noise as low as 60nV/√Hz (at 2.048V output) without increasing the supply current typically associated with low-noise reference sources. Broadband noise performance can be enhanced to 35 nV/√Hz and AC power supply noise suppressed by adding a 0.1 µF capacitor to the noise-reduction pin. The MAX6126BASA25 series-mode reference supports a supply voltage range of 2.7V to 12.6V, ensuring load regulation of less than 0.025Ω with sink and source currents up to 10mA. These devices support the automotive application temperature range of -40°C to +125°C.

The MAX6126BASA25 typically draws 380μA supply current and provides output voltages of 2.048V, 2.500V, 2.800V, 3.000V, 3.300V, 3.600V, 4.096V, and 5.000V. The MAX6126 also features a low dropout voltage of 200mV. Unlike traditional shunt-mode (two-terminal) reference voltage sources that consume excessive supply current and require external resistors, the MAX6126BASA25's supply current is virtually independent of supply voltage and requires no external resistors. The MAX6126BASA25 operates stably with load capacitance ranging from 0.1µF to 10µF.

The MAX6126BASA25 is housed in a compact 8-pin µMAX® pin SO package.

Features — MAX6126BASA25

Ultra-low noise: 1.3µV p-p (0.1Hz to 10Hz, 2.048V output)

Ultra-low temperature coefficient: 3ppm/°C (maximum)

Initial accuracy: ±0.02% (maximum)

Wide Supply Voltage Range: (VOUT + 200mV) to 12.6V

Low Dropout Voltage: 200mV (Max)

Quiescent Supply Current: 380µA

10mA Sink/Source Current Capability

Stable Operation with CLOAD = 0.1µF to 10µF

Long-Term Stability: 20ppm/1000hr

Load regulation: 0.025Ω (maximum)

Line regulation: 20µV/V (maximum)

Drive and sense outputs for remote sensing

Applications — MAX6126BASA25

Automatic Test Equipment (ATE)

Digital Voltmeters

High-precision industrial and process control

High-accuracy standard reference voltage sources

High-resolution A/D and D/A converters

Precision current sources

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  A: at present, our self-employed brands TI，ST，ADI，NXP，LATTICE，CYPRESS，INFINEON，XILINX and other first-line brands. Other channels are the original factory and agency channels. If necessary, we can communicate and confirm according to the specific brand and model.

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