Fixed 5V series reference — ±0.4% initial accuracy, 40ppm/°C drift
The MAX6129AEUK50-T: Input voltage must stay between 5.2V and 12.6V — the 200 mV minimum headroom above the 5V output ensures the series pass element stays in regulation across load and temperature.
Low-noise, low-power analog rail
Supply current is 10.5 µA typical, making this reference suitable for battery-powered or always-on analog front-ends where the reference's own draw must stay below a few tens of microamps. Output current is rated at 4 mA — enough to bias a handful of op-amp inputs or a single ADC reference input, but not intended to drive external loads like a heater or heavy buffer.
SOT-23-5 footprint and active lifecycle
Packaged in a 5-lead SOT-23 (SC-74A) with supplier device package SOT-23-5 — the same footprint used across many low-power references, so a PCB layout for this part often accepts pin-compatible alternatives from other vendors without a board spin. Note RoHS non-compliance: the part is not RoHS-compliant, which may restrict use in markets requiring RoHS exemption or lead-free assembly.