ADS1274
- Simultaneously Measure Four/Eight Channels
- Up to 144kSPS Data Rate
- AC Performance:
70kHz Bandwidth
111dB SNR (High-Resolution Mode)
–108dB THD - DC Accuracy:
0.8µV/°C Offset Drift
1.3ppm/°C Gain Drift - Selectable Operating Modes:
High-Speed: 144kSPS, 106dB SNR
High-Resolution: 52kSPS, 111dB SNR
Low-Power: 52kSPS, 31mW/ch
Low-Speed: 10kSPS, 7mW/ch - Linear Phase Digital Filter
- SPI™ or Frame-Sync Serial Interface
- Low Sampling Aperture Error
- Modulator Output Option (digital filter bypass)
- Analog Supply: 5V
- Digital Core: 1.8V
- I/O Supply: 1.8V to 3.3V
- Vibration/Modal Analysis
- Multi-Channel Data Acquisition
- Acoustics/Dynamic Strain Gauges
- Pressure Sensors
PowerPAD is a trademark of Texas Instruments, Inc.
SPI is a trademark of Motorola, Inc.
All other trademarks are the property of their respective owners.
Based on the single-channel ADS1271, the ADS1274 (quad) and ADS1278 (octal) are 24-bit, delta-sigma (ΔΣ) analog-to-digital converters (ADCs) with data rates up to 144k samples per second (SPS), allowing simultaneous sampling of four or eight channels. The devices are offered in identical packages, permitting drop-in expandability.
Traditionally, industrial delta-sigma ADCs offering good drift performance use digital filters with large passband droop. As a result, they have limited signal bandwidth and are mostly suited for dc measurements. High-resolution ADCs in audio applications offer larger usable bandwidths, but the offset and drift specifications are significantly weaker than respective industrial counterparts. The ADS1274 and ADS1278 combine these types of converters, allowing high-precision industrial measurement with excellent dc and ac specifications.
The high-order, chopper-stabilized modulator achieves very low drift with low in-band noise. The onboard decimation filter suppresses modulator and signal out-of-band noise. These ADCs provide a usable signal bandwidth up to 90% of the Nyquist rate with less than 0.005dB of ripple.
Four operating modes allow for optimization of speed, resolution, and power. All operations are controlled directly by pins; there are no registers to program. The devices are fully specified over the extended industrial range (–40°C to +105°C) and are available in an HTQFP-64 PowerPAD™ package.
技術文件
類型 | 標題 | 日期 | ||
---|---|---|---|---|
* | Data sheet | Quad/Octal, Simultaneous Sampling, 24-Bit Analog-to-Digital Converters datasheet (Rev. F) | 2011年 2月 17日 | |
Application note | Digital Filter Types in Delta-Sigma ADCs (Rev. A) | PDF | HTML | 2023年 3月 29日 | |
E-book | Fundamentals of Precision ADC Noise Analysis | 2020年 6月 19日 | ||
White paper | Voltage-reference impact on total harmonic distortion | 2016年 8月 1日 | ||
E-book | Best of Baker's Best: Precision Data Converters -- Delta-Sigma ADCs | 2015年 3月 19日 |
設計與開發
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支援產品和硬體
產品
精確 ADC
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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 (...)
支援產品和硬體
產品
精密度運算放大器 (Vos<1mV)
一般用途運算放大器
音訊運算放大器
轉阻放大器
高速運算放大器 (GBW ≥ 50 MHz)
功率運算放大器
視訊放大器
線路驅動器
轉導放大器與雷射驅動器
全差分放大器
精確 ADC
生物感測 AFE
高速 ADC (≥10 MSPS)
接收器
觸控式螢幕控制器
差分放大器
儀器放大器
音訊線路接收器
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
PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具
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 |
---|---|---|
HTQFP (PAP) | 64 | 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。