封裝資訊
| 封裝 | 針腳 SOT-23-THN (DDC) | 5 |
| 操作溫度範圍 (°C) -40 to 125 |
| 包裝數量 | 運送業者 250 | SMALL T&R |
REF20 的特色
- Two outputs, VREF and VREF / 2, for convenient use in single-supply systems
- Excellent temperature drift performance:
- 8ppm/°C (maximum) from –40°C to 125°C
- High initial accuracy: ±0.05% (maximum)
- VREF and VBIAS tracking
overtemperature:
- 6ppm/°C (maximum) from –40°C to 85°C
- 7ppm/°C (maximum) from –40°C to 125°C
- Microsize package: SOT23-5
- Low dropout voltage: 10mV
- High output current: ±20mA
- Low quiescent current: 360µA
- Line regulation: 3ppm/V
- Load regulation: 8ppm/mA
- Matte-Sn version (REF2025AISDDCR) for improved corrosion resistance in the Battelle Class III and similar harsh environments
REF20 的說明
Applications with only a positive supply voltage often require additional stable voltage in the middle of the analog-to-digital converter (ADC) input range to bias input bipolar signals. The REF20xx 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 REF20xx offers excellent temperature drift (8ppm/°C, maximum) and initial accuracy (0.05%) on both the VREF and VBIAS outputs while operating at a quiescent current less than 430µA. In addition, the VREF and VBIAS outputs track each other with a precision of 6ppm/°C (maximum) across the temperature range of –40°C to 125°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 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. Very good long-term stability and low noise levels make these devices ideally-designed for high-precision industrial applications.