REF1930

Product Folder Order Now Technical Documents Tools & Software Support & Community Reference Design REF1925, REF1930, REF1933, REF1941 SBOS697A – SEPTEMBER 2014 – REVISED JANUARY 2017 REF19xx Low-Drift, Low-Power, Dual-Output, VREF and VREF / 2 Voltage References 1 Features 1 Two Outputs, VREF and VREF / 2, for Convenient Use in Single-Supply Systems Excellent Temperature Drift Performance: – 25 ppm/°C (max) from –40°C to 125°C High Initial Accuracy: ±0.1% (max) VREF and VBIAS Tracking over Temperature: – 6 ppm/°C (max) from –40°C to 85°C – 7 ppm/°C (max) from –40°C to 125°C Microsize Package: SOT23-5 Low Dropout Voltage: 10 mV High Output Current: ±20 mA Low Quiescent Current: 360 μA Line Regulation: 3 ppm/V Load Regulation: 8 ppm/mA 2 Applications Digital Signal Processing: – Power Inverters – Motor Controls Current Sensing Industrial Process Controls Medical Equipment Data Acquisition Systems Single-Supply Systems 3 Description Applications with only a positive supply voltage often require an additional stable voltage in the middle of the analog-to-digital converter (ADC) input range to bias input bipolar signals. The REF19xx provides a reference voltage (VREF) for the ADC and a second highly-accurate voltage (VBIAS) that can be used to bias the input bipolar signals. The REF19xx offers excellent temperature drift (25 ppm/°C, max) and initial accuracy (0.1%) on both the VREF and VBIAS outputs while operating at a quiescent current less...