ADS125H01
- ±20-V input, 24-bit delta-sigma ADC
- Programmable data rate: 2.5 SPS to 40 kSPS
- High-voltage, 1-GΩ input impedance PGA:
- Differential input range: up to ±20 V
- Absolute input range: up to ±15.5 V
- Programmable attenuation and gain:
- 0.125 to 128
- High-performance ADC:
- Noise: 45 nVRMS (gain = 128, 20 SPS)
- CMRR: 105 dB
- 50-Hz and 60-Hz rejection: 95 dB
- Offset drift: 10 nV/°C
- Gain drift: 1 ppm/°C
- INL: 2 ppm
- Integrated features and diagnostics:
- Internal oscillator
- Signal and reference voltage monitors
- Cyclic redundancy check (CRC)
- Power supplies:
- AVDD: 4.75 V to 5.25 V
- DVDD: 2.7 V to 5.25 V
- HVDD: ±5 V to ±18 V
- Operating temperature: –40°C to +125°C
- 5-mm × 5-mm VQFN package
The ADS125H01 is a ±20-V input, 24-bit, delta-sigma (ΔΣ) analog-to-digital converter (ADC). The ADC features a low-noise programmable gain amplifier (PGA), a clock oscillator, and signal or reference out-of-range monitors.
The integration of a wide input range, ±18-V supply PGA and an ADC into a single package reduces board area up to 50% compared to discrete solutions.
Programmable attenuation and gain of 0.125 to 128 (corresponding to an equivalent input range from ±20 V to ±20 mV) eliminates the need for an external attenuator or external gain stages. A 1-GΩ minimum input impedance reduces error resulting from sensor loading. Additionally, the low-noise and low-drift performance allow direct connections to strain-gauge bridge and thermocouple sensors that are affected by high common-mode voltage.
The digital filter is programmable over a wide range from 2.5 SPS to 40 kSPS. Attenuation of 50-Hz and 60-Hz line cycle noise for data rates ≤ 50 SPS or 60 SPS reduces measurement error. In most data rates, the filter provides no-latency conversion data for high data throughput during external channel sequencing.
The ADS125H01 is housed in a 5-mm × 5-mm VQFN package and is fully specified over the –40°C to +125°C temperature range.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | ADS125H01 ±20-V Input, 40-kSPS, 24-Bit, Delta-Sigma ADC datasheet (Rev. A) | PDF | HTML | 2021年 1月 15日 |
| Circuit design | 來自 +5V 供電電源且用於高電壓資料轉換器的精密、±15V 電 源供應電路 | PDF | HTML | 2025年 12月 9日 | |
| Application note | Calculating Conversion Latency and System Cycle Time for Delta-Sigma ADCs (Rev. A) | PDF | HTML | 2024年 3月 18日 | |
| Application note | A Basic Guide to Bridge Measurements (Rev. A) | PDF | HTML | 2024年 3月 13日 | |
| Application note | Digital Filter Types in Delta-Sigma ADCs (Rev. A) | PDF | HTML | 2023年 3月 29日 | |
| Application note | Communication Methods for Data Integrity Using Delta-Sigma Data Converters (Rev. A) | PDF | HTML | 2021年 8月 23日 | |
| E-book | Fundamentals of Precision ADC Noise Analysis (Rev. A) | 2020年 6月 19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)。
ADS125H02EVM — ADS125H02 評估模組
ADS125H02 評估模組 (EVM) 是用於評估 ADS125H02 類比轉數位轉換器 (ADC) 的平台。ADS125H02 是一款寬輸入範圍、24 位元、19.2 kSPS 的三角積分 (ΔΣ) ADC,它整合 PGA、電壓參考和內部故障監測器。差動輸入電壓範圍從 ±20mV 至 ±15.5V。這款感測器就緒的 ADC 為最嚴苛的量測應用,包括磅秤、應變計感測器、熱電偶和電阻溫度偵測器 (RTD),提供高精確度、單晶片量測解決方案。
ADS125H02EVM 及 ΔΣ ADC 評估軟體 (DELTASIGMAEVAL-GUI) 皆可減少原型開發時間,讓您的產品更快上市。
ADC-RTD-CONFIG-CALC — RTD Configuration Calculator for Precision ADCs
This resistance temperature detector (RTD) configuration calculator is a Microsoft® Excel-based tool that helps the user identify a system solution for an RTD application. Two-, three- and four-wire RTD configurations are shown by default, with options for a high-side or low-side reference (...)
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ANALOG-ENGINEER-CALC — PC software analog engineer's calculator
The analog engineer’s calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting operational-amplifier (...)
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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.
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PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具
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 (...)
TINA-TI — 基於 SPICE 的類比模擬程式
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| VQFN (RHB) | 32 | Ultra Librarian |
訂購與品質
- RoHS
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- 產品標記
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- 進行中持續性的可靠性監測
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建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。