REF70

現行

具有低雜訊和低偏移的超高精度電壓參考

立即訂購

產品規格表

document-pdfAcrobat REF70 2 ppm/°C Maximum Drift, 0.23 ppmp-p 1/f Noise, Precision Voltage Reference datasheet (Rev. G) (英文) PDF | HTML

REF70

現行

產品規格表

立即訂購

產品詳細資料

Rating

Catalog

VO (V)

1.25, 2.5, 3, 3.3, 4.096, 5

Temp coeff (max) (ppm/°C)

2

Initial accuracy (max) (%)

0.025

Features

Enable pin

Iout/Iz (max) (mA)

10

Vin (min) (V)

3

Vin (max) (V)

18

Iq (typ) (mA)

4

LFN 0.1 to 10 Hz (typ) (µVPP)

0.22

Operating temperature range (°C)

-40 to 125

Shutdown current (ISD) (typ) (µA)

5

Rating

Catalog

VO (V)

1.25, 2.5, 3, 3.3, 4.096, 5

Temp coeff (max) (ppm/°C)

2

Initial accuracy (max) (%)

0.025

Features

Enable pin

Iout/Iz (max) (mA)

10

Vin (min) (V)

3

Vin (max) (V)

18

Iq (typ) (mA)

4

LFN 0.1 to 10 Hz (typ) (µVPP)

0.22

Operating temperature range (°C)

-40 to 125

Shutdown current (ISD) (typ) (µA)

5

LCCC (FKH)

8

25 mm² 5 x 5

VSSOP (DGK)

8

14.7 mm² 3 x 4.9

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

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.

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.

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重要文件	類型	標題	格式選項	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
	White paper	以低雜訊電源裝置簡化電源架構 (Rev. A)	PDF \| HTML	2024年 11月 19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

如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。

開發板

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

REF70 評估模組 (EVM) 是用於評估具超低雜訊、高精密度電壓參考的 REF70 的平台。REF70 在運作期間可提供 0.23 ppm_p-p 的超低 1/f 雜訊，並可在 2 ppm/°C 的溫度漂移下維持極精確電壓輸出。REF70EVM 支援 REF70 系列及其封裝選項變體的預設配置。

如需詳細資訊和其他配置，請參閱 REF70 產品規格表。

PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具

PSpice® for TI 是有助於評估類比電路功能的設計和模擬環境。這款全功能設計和模擬套件使用 Cadence® 的類比分析引擎。PSpice for TI 包括業界最大的模型庫之一，涵蓋我們的類比和電源產品組合，以及特定類比行為模型，且使用無需支付費用。

PSpice for TI 設計和模擬環境可讓您使用其內建函式庫來模擬複雜的混合訊號設計。在進行佈局和製造之前，建立完整的終端設備設計和解決方案原型，進而縮短上市時間並降低開發成本。

在 PSpice for TI 設計與模擬工具中，您可以搜尋 TI (...)

要求

參考設計

TIDA-010945 — 整合式低漂移精密數位萬用表和資料擷取訊號鏈參考設計

此參考設計說明用於 DC 量測之高性能訊號鏈的理論、設計與測試。主要目標應用是數位萬用表 (DMM)，但此設計也適用於其他應用，例如資料擷取 (DAQ) 和狀況監控。此設計使用高性能 24 位元類比轉數位轉換器 ADS127L21，以及低雜訊可編程增益放大器 PGA855，並具備 ±2.4ppm 的典型非線性與低溫度致漂移，進而實現高 DC 準確度。這些裝置皆高度整合，可簡化整體訊號鏈設計。

Design guide: PDF

封裝	針腳	CAD 符號、佔位空間與 3D 模型
LCCC (FKH)	8	Ultra Librarian
VSSOP (DGK)	8	Ultra Librarian

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REF70

具有低雜訊和低偏移的超高精度電壓參考

REF70

產品詳細資料

技術文件

設計與開發

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

REF7025 PSpice Model

REF7025 TINA-TI SPICE Model

REF7030 PSpice Model

REF7030 TINA-TI SPICE Model

REF7033 PSpice Model

REF7033 TINA-TI SPICE Model

REF7040 PSpice Model

REF7040 TINA-TI SPICE Model

REF7050 PSpice Model

REF7050 TINA-TI SPICE Model

ADC-DAC-TO-VREF-SELECT-DESIGN-TOOL — The ADC-TO-VREF-SELECT tool enables the pairing of TI ADCs, DACs, and series voltage references.

支援產品和硬體

PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具

TIDA-010945 — 整合式低漂移精密數位萬用表和資料擷取訊號鏈參考設計

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ADC-DAC-TO-VREF-SELECT-DESIGN-TOOL — The ADC-TO-VREF-SELECT tool enables the pairing of TI ADCs, DACs, and series voltage references.

串聯電壓參考

精確 ADC

生物感測 AFE

整合式精密 ADC 與 DAC

高速 ADC (≥10 MSPS)

精密 DAC (≤10 MSPS)

版本資訊