REF2030AIDDCR

Applications with only a positive supply voltage typically require an additional stable voltage at the midpoint of the ADC input range to bias bipolar input signals. The REF20xx provides a reference voltage (VREF) for use with an ADC and a high-precision voltage (VBias) for biasing bipolar input signals. The REF20xx features excellent temperature drift (8 ppm/°C maximum) and initial accuracy (0.05%) at both the VREF and VBIAS outputs, while maintaining quiescent current below 430μA. In addition, the VREF and VBIAS outputs track each other to 6 ppm/°C (maximum) over a temperature range of -40°C to 85°C. All of these features improve signal chain accuracy, save board space, and reduce system cost compared to discrete solutions. An ultra-low dropout of only 10mV allows the device to operate at very low input voltages, making it well suited for battery-powered systems. The VREF and VBias voltages share equally impressive specifications, with strong sink and source current capability. These devices offer excellent long-term stability and low noise levels, making them ideal for high-precision industrial applications.

Applications

• Digital signal processing
• Power inverters
• Motor control
• Current sensing
• Industrial process control
• Medical equipment
• Data acquisition systems
• Single-supply systems

Key features

• Dual outputs: VREF and VREF/2, ideal for single-supply systems
• Excellent temperature drift: 8 ppm/°C (max) over -40°C to 125°C
• High initial accuracy: ±0.05% (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
• Compact package: SOT23-5
• Low dropout voltage: 10mV
• High output current: ±20mA
• Low quiescent current: 360μA
• Line regulation: 3 ppm/V
• Load regulation: 8 ppm/mA
• Matte-Sn version (REF2025AISDDCR) offers improved corrosion resistance in Battelle Class III and similarly harsh environments