MAX6126 Voltage Reference and MAXREFDES5 AFE


High-accuracy, multi-input, isolated, analog front-end and series-voltage reference

The Maxim Integrated MAX6126 is an ultra-low-noise, high-precision, low-dropout voltage reference. This family of voltage references features curvature-correction circuitry and high-stability, laser-trimmed, thin-film resistors that result in 3 ppm/°C (max) temperature coefficients and an excellent ±0.02% (max) initial accuracy. The proprietary low-noise reference architecture produces a low flicker noise of 1.3 µVP-P and wideband noise as low as 60 nV/√Hz (2.048 V output) without the increased supply current usually found in low-noise references.

The Maxim Integrated Santa Fe (MAXREFDES5#) subsystem reference design is a 16-bit, high-accuracy, industrial analog front-end (AFE) that accepts -10 V to +10 V, 0 to 10 V, and 4 to 20 mA current-loop signals with isolated power and data integrated into a small form-factor. The Santa Fe design integrates low-noise, high-impedance analog buffers (MAX9632); a highly-accurate ADC with innovative on-chip attenuation (MAX1301); an ultra-high precision 4.096 V voltage reference (MAX6126); 600 VRMS data isolation (MAX14850); and isolated/regulated +12 V, -12 V, and 5 V power rails (MAX256/MAX1659)

Long-Term Supply Program Voltage Reference Selection Lead (SnPb) Finish for COTS

MAXREFDES5 AFE and MAX6126 Voltage Reference

Manufacturer Part Number Description Available Quantity Datasheets
MAX6126A21+ IC VREF SERIES 2.048V 8UMAX 205
MAX6126A25+ IC VREF SERIES 2.5V 8UMAX 108
MAX6126A30+ IC VREF SERIES 3V 8UMAX 96
MAX6126A41+ IC VREF SERIES 4.096V 8UMAX 475
MAX6126A50+ IC VREF SERIES 5V 8UMAX 816
MAX6126AASA21+ IC VREF SERIES 2.048V 8SOIC 1615
MAX6126AASA25+ IC VREF SERIES 2.5V 8SOIC 46
MAX6126AASA30+ IC VREF SERIES 3V 8SOIC 355
MAX6126AASA41+ IC VREF SERIES 4.096V 8SOIC 128
MAX6126AASA50+ IC VREF SERIES 5V 8SOIC 278
MAX6126B21+ IC VREF SERIES 2.048V 8UMAX 74
MAX6126B25+ IC VREF SERIES 2.5V 8UMAX 1037
MAX6126B30+ IC VREF SERIES 3V 8UMAX 276
MAX6126B41+ IC VREF SERIES 4.096V 8UMAX 1032
MAX6126B50+ IC VREF SERIES 5V 8UMAX 86
MAX6126BASA21+ IC VREF SERIES 2.048V 8SOIC 80
MAX6126BASA25+ IC VREF SERIES 2.5V 8SOIC 193
MAX6126BASA30+ IC VREF SERIES 3V 8SOIC 39
MAX6126BASA41+ IC VREF SERIES 4.096V 8SOIC 194
MAX6126BASA50+ IC VREF SERIES 5V 8SOIC 129

Eval Board

Manufacturer Part Number Description Available Quantity Datasheets
MAXREFDES5# REFERENCE DESIGN SANTA FE 10