Texas Instruments REF19xx Low-Drift Low-Power Voltage References
Texas Instruments REF19xx Low-Drift Low-Power Voltage References 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 430µA. The VREF and VBIAS outputs track each other with a precision of 6ppm/°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. The extremely low dropout voltage of only 10mV allows operation from very low input voltages, which can be very useful in battery-operated systems. Both the VREF and VBIAS voltages have the same excellent specifications and can sink and source current equally well. Texas Instruments REF19xx with very good long-term stability and low noise levels make these devices ideal for high-precision industrial applications.
Features
- Two outputs, VREF and VREF/ 2, for convenient use in single-supply systems
- Excellent temperature drift performance
- 25ppm/°C (max) from -40°C to 125°C
- ±0.1% (max) high initial accuracy
- VREF and VBIAS tracking over temperature
- 6ppm/°C (max) from -40°C to 85°C
- 7ppm/°C (max) from -40°C to 125°C
- SOT23-5 microsize package
- 10mV low dropout voltage
- ±20mA high output current
- 360µA low quiescent current
- 3ppm/V line regulation
- 8ppm/mA load regulation
Applications
- Digital signal processing
- Power inverters
- Motor controls
- Current sensing
- Industrial process controls
- Medical equipment
- Data acquisition systems
- Single-supply systems
Application Example
게시일: 2014-10-24
| 갱신일: 2022-03-11