Precision 4.096 V reference in SOT-23-3
The MAX6064BEUR+T is a series voltage reference from Analog Devices delivering a fixed 4.096 V output with ±0.4 % initial tolerance. That 0.4 % window means the output sits between 4.080 V and 4.112 V at 25 °C — tight enough for a 12-bit ADC where each LSB is 1 mV at a 4.096 V full-scale, so the reference error stays under half an LSB without trimming. Temperature drift is specified at 30 ppm/°C typical.
Noise floor and load drive
The 0.1-to-10 Hz figure is the one that matters for a DC measurement channel — it sets the noise floor below which a 16-bit ADC's code transitions start to dither. The 50 µVrms wideband spec covers the switching noise from a downstream converter's clock. Output current is rated 5 mA maximum. That is enough to bias a single ADC reference input or a handful of op-amp stages, but not to supply multiple converter reference pins in parallel — each additional load eats into the 5 mA budget and raises the self-heating drift.
Supply headroom and quiescent draw
Input voltage range is 4.296 V to 12.6 V. The minimum headroom above the 4.096 V output is just 200 mV — a 4.5 V rail works, but a 5 V rail gives margin for ripple and load transients. The SOT-23-3 package (TO-236-3 / SC-59 footprint) is a three-pin device: input, output, ground. No trim or shutdown pin — the output is always on when the input is present. The small footprint suits dense mixed-signal boards where a reference sits next to the converter it serves.
Active production, no cross-reference on record
No official pin-compatible second source or direct replacement is listed. The MAX6064 family includes other voltage options (2.5 V, 3.0 V, 5.0 V) in the same SOT-23-3 footprint, but a 4.096 V output is specific to this variant. For a BOM that requires the 4.096 V level, this order code is the one to specify.