REF1925AIDDCT

REF1925AIDDCT Description Voltage References Dual Output Vref & Vref/2 Voltage RefApplications 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 than 430 µA. In addition, the VREF and VBIAS outputs track each other with a precision of 6 ppm/°C (max) across the temperature range of –40°C to 85°C. All these features increase the precision of the signal chain and decrease board space, while reducing the cost of the system as compared to a discrete solution. Extremely low dropout voltage of only 10 mV allows operation from very low input voltages, which can be very useful in battery-operated systems REF1925AIDDCT
Features
• 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 REF1925AIDDCT Applications
• Digital Signal Processing:– Power Inverters– Motor Controls
• Current Sensing
• Industrial Process Controls
• Medical Equipment
• Data Acquisition Systems
• Single-Supply Systems