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 (8 ppm/°C, maximum) and initial accuracy (0.05%) 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 (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 10 mV 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-suited for high-precision industrial applications.
| 상위 문서 | 유형 | 직함 | 형식 옵션 | 날짜 |
|---|---|---|---|---|
| * | Data sheet | REF20xx Low-Drift, Low-Power, Dual-Output, VREF and VREF / 2 Voltage References datasheet (Rev. E) | PDF | HTML | 2022/02/03 |
| Application note | Voltage Reference Selection and Design Tips For Data Converters (Rev. B) | PDF | HTML | 2024/01/09 | |
| E-book | Tips and tricks for designing with voltage references (Rev. A) | 2021/05/07 | ||
| White paper | Simplifying Signal Chain Design for High Performance in Small Systems | 2020/10/22 | ||
| Application note | Precision Current Sources and Sinks Using Voltage References | 2020/06/30 | ||
| Application brief | Voltage Reference Solutions in Motor Control Drives | 2019/07/29 | ||
| E-book | Voltage Supervisor and Reset ICs: Tips, Tricks and Basics | 2019/06/28 | ||
| White paper | Voltage reference selection basics white paper (Rev. A) | 2018/10/23 |
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소형 표면 실장 IC(집적 회로)와 쉽고 빠르며 경제적인 방식으로 인터페이싱하는 방법을 제공하는 DIP 어댑터 평가 모듈(DIP-ADAPTER-EVM)로 연산 증폭기 프로토타이핑 및 테스트 속도를 높이세요. 제품에 포함된 Samtec 터미널 스트립을 사용하여 지원되는 연산 증폭기를 연결하거나 기존 회로에 직접 연결할 수 있습니다.
DIP 어댑터 EVM 키트는 다음을 포함해 가장 널리 사용되는 6개의 업계 표준 패키지를 지원합니다.
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| SOT-23-THN (DDC) | 5 | Ultra Librarian |
This is the first release of this tool.