REF6145
- Excellent Temperature Drift Performance
- 8 ppm/°C (max) from –40°C to +125°C
- Extremely Low Noise
- Total Noise: 5 µVRMS With 47-µF Capacitor
- 1/f Noise (0.1 Hz to 10 Hz): 3 µVPP/V
- Integrated ADC Drive Buffer
- Low Output Impedance: < 50 mΩ (0-200 kHz)
- First Sample Precise to 18 Bits With ADS8881
- Enables Burst-Mode DAQ Systems
- Low Supply Current: 820 µA
- Low Shutdown Current: 1 µA
- High Initial Accuracy: ±0.05%
- Very-Low Noise and Distortion
- Output Current Drive: ±4 mA
- Programmable Short-Circuit Current
- Verified to Drive REF Pin of ADS88xx family of SAR ADCs and ADS127xx family of Wideband ΔΣ ADCs
The REF6000 family of voltage references have an integrated low output impedance buffer that enable the user to directly drive the REF pin of precision data converters, while preserving linearity, distortion, and noise performance. Most precision SAR and Delta-Sigma ADCs, switch binary-weighted capacitors onto the REF pin during the conversion process. In order to support this dynamic load the output of the voltage reference must be buffered with a low-output impedance (high-bandwidth) buffer. The REF6000 family devices are well suited, but not limited, to drive the REF pin of the ADS88xx family of SAR ADCs, and ADS127xx family of delta-sigma ADCs, as well as other digital-to-analog converters (DACs).
The REF6000 family of voltage references are able to maintain an output voltage within 1LSB (18-bit) with minimal droop, even during the first conversion while driving the REF pin of the ADS8881. This feature is useful in burst-mode, event-triggered, equivalent-time sampling, and variable-sampling-rate data-acquisition systems. The REF61xx variants of REF6000 family specify a maximum temperature drift of just 8 ppm/°C and initial accuracy of 0.05% for both the voltage reference and the low output impedance buffer combined. For various temperature drift options in REF6000 family, see the Device Comparison Table.
技術資料
| 上位の文書 | タイプ | タイトル | フォーマットオプション | 最新の英語版をダウンロード | 日付 | |
|---|---|---|---|---|---|---|
| * | データシート | HIgh-Precision Voltage Reference With Integrated ADC Drive Buffer データシート (Rev. B) | PDF | HTML | 2016/08/30 | ||
| アプリケーション・ノート | Voltage Reference Selection and Design Tips For Data Converters (Rev. B) | PDF | HTML | 2024/01/09 | |||
| e-Book（PDF） | Tips and tricks for designing with voltage references (Rev. A) | 2021/05/07 | ||||
| アプリケーション・ノート | Long-Term Drift in Voltage References | PDF | HTML | 2021/03/25 | |||
| e-Book（PDF） | Voltage Supervisor and Reset ICs: Tips, Tricks and Basics | 2019/06/28 | ||||
| ホワイト・ペーパー | Voltage reference selection basics white paper (Rev. A) | 2018/10/23 | ||||
| ホワイト・ペーパー | Voltage-reference impact on total harmonic distortion | 2016/08/01 |
設計と開発
その他のアイテムや必要なリソースを参照するには、以下のタイトルをクリックして詳細ページをご覧ください。
REF6025EVM-PDK — REF6025 電圧リファレンス評価基板
| パッケージ | ピン数 | CAD シンボル、フットプリント、および 3D モデル |
|---|---|---|
| VSSOP (DGK) | 8 | Ultra Librarian |