REF70
- Low noise enables precision measurements:
- 1/f Noise (0.1 Hz to 10 Hz): 0.23 ppm p-p
- 10 Hz to 1 kHz: 0.35 ppm rms
- Low temperature drift coefficient:
- 2 ppm/°C maximum (-40°C to 125°C)
- High accuracy: ±0.025% maximum
- Humidity resistant hermetic ceramic package (LCCC)
- Excellent long-term stability (1k hr): 35 ppm
- Low dropout: 400 mV
- Designed for a wide range of applications:
- Wide input voltage up to 18 V
- Output current: ±10 mA
- Voltage options: 1.25 V, 2.5 V, 3 V, 3.3 V, 4.096 V, 5 V
- Ultra-flexible solution:
- Stable with 1-µF to 100-µF output low-ESR capacitor
- High PSRR: 107 dB at 1 kHz
- Operating temperature range: −40°C to +125°C
The REF70 is a family of high precision series voltage references that offers the industry’s lowest noise (0.23 ppm p-p), very low temperature drift coefficient (2 ppm/°C), and high accuracy (±0.025%). The REF70 offers a high PSRR, low drop-out voltage and excellent load and line regulation to help meet strict transient requirements. This combination of precision and features is designed for applications such as test and measurement that demand a precise reference to be paired with precision, high-resolution data converters such as ADS8900B, ADS127L01 and DAC11001A, to achieve optimal performance in the signal chain. The REF70 is also designed for noise-sensitive medical applications such as ultrasound and X-ray to help enable low-noise measurements from the analog front end.
The REF70 family is available in VSSOP and LCCC package options. The LCCC (FKH) package is a hermetically sealed ceramic package that allows for low, long-term drift for applications that require a stable reference over a long time period without calibration.
The REF70 is specified for the wide temperature range of −40°C to +125°C. The wide temperature range enables operation across various industrial applications.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | REF70 2 ppm/°C Maximum Drift, 0.23 ppmp-p 1/f Noise, Precision Voltage Reference datasheet (Rev. G) | PDF | HTML | 2023年 9月 27日 |
| Technical article | 選擇低雜訊電壓參考以提升 X 光影像解析度 | PDF | HTML | 2024年 1月 22日 | |
| Application note | Voltage Reference Selection and Design Tips For Data Converters (Rev. B) | PDF | HTML | 2024年 1月 9日 | |
| E-book | Tips and tricks for designing with voltage references (Rev. A) | 2021年 5月 7日 | ||
| Technical article | How to design an accurate DC power supply | PDF | HTML | 2021年 4月 8日 | |
| Application note | Long-Term Drift in Voltage References | PDF | HTML | 2021年 3月 25日 | |
| Application note | Low-Noise Negative Reference Design with REF5025 | 2019年 12月 1日 | ||
| White paper | Voltage reference selection basics white paper (Rev. A) | 2018年 10月 23日 |
設計與開發
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REF70EVM — 具低雜訊和低漂移，且適用超高精密度電壓參考的 REF70 評估模組
The REF70 evaluation module (EVM) is a platform for evaluating the REF70, which is an ultra-low-noise, high-precision voltage reference. REF70 offers an ultra-low 1/f noise of 0.23 ppmp-p during operation, while maintaining a very precise voltage output over temperature of 2 ppm/°C. REF70EVM (...)
PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具
| 封裝 | 引腳 | 下載 |
|---|---|---|
| LCCC (FKH) | 8 | 檢視選項 |
| VSSOP (DGK) | 8 | 檢視選項 |
訂購與品質
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 資格摘要
- 進行中可靠性監測
- 晶圓廠位置
- 組裝地點