ADS125H02
- ±20-V input, 24-bit delta-sigma ADC
- Programmable data rate: 2.5 SPS to 40 kSPS
- High-voltage, high-impedance PGA:
- Differential input range: up to ±20 V
- Programmable gain: 0.125 to 128
- Common-mode input voltage: up to ±15.5 V
- Input impedance: 1 GΩ (minimum)
- High-performance ADC:
- Input noise: 45 nVRMS (20 SPS)
- CMRR: 105 dB
- Normal-mode rejection at 50 Hz, 60 Hz: 95 dB
- Offset drift: 5 nV/°C
- Gain drift: 1 ppm/°C
- INL: 2 ppm
- Integrated features and diagnostics:
- 2.5-V reference: 3 ppm/°C drift
- Clock oscillator: 2.5% error (maximum)
- Excitation current sources
- GPIO to drive external mux
- 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 ADS125H02 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), an internal reference, clock oscillator, and signal or reference out-of-range monitors.
The integration of a wide input range, ±18-V PGA and an ADC into a single package reduces board area up to 50% compared to discrete solutions.
Programmable 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. 1-GΩ minimum input impedance reduces error caused by sensor loading. Additionally, the low noise and low drift performance allow direct connections to bridge, resistance temperature detector (RTD), and thermocouple sensors.
The digital filter attenuates 50-Hz and 60-Hz line cycle noise for data rates ≤ 50 SPS or 60 SPS to reduce measurement error. The filter also provides no-latency conversion data for high data throughput during channel sequencing.
The ADS125H02 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
設計與開發
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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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精確 ADC
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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精密運算放大器 (Vos<1mV)
一般用途運算放大器
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高速運算放大器 (GBW ≥ 50 MHz)
功率運算放大器
視訊放大器
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轉導放大器與雷射驅動器
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生物感測 AFE
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差分放大器
儀器放大器
類比電流感測放大器
數位電源監測器
配備整合式分流電阻器的類比電流感測放大器
具整合式分流電阻器的數位電源監測器
晶粒與晶圓服務
RF 接收器
RF 發射器
Specialty audio amplifiers
音訊 ADC
Application-specific data converters|MRI
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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串聯電壓參考
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生物感測 AFE
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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
- 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
- 認證摘要
- 進行中持續性的可靠性監測
- 晶圓廠位置
- 組裝地點
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。