ADS1174
- Simultaneously Sample Four/Eight Channels
- Selectable Operating Modes:
High-Speed: 52kSPS Data Rate, 31mW/ch
Low-Power: 10kSPS Data Rate, 7mW/ch - AC Performance:
25kHz Bandwidth
97dB SNR
-105dB THD - DC Performance:
2µV/°C Offset Drift
2ppm/°C Gain Drift - Digital Filter:
Linear Phase Response
Passband Ripple: ±0.005dB
Stop Band Attenuation: 100dB - Selectable SPI or Frame Sync Serial Interface
- Simple Pin-Driven Control
- Low Sampling Aperture Error
- Specified from -40°C to +105°C
- Analog Supply: 5V
- I/O Supply: 1.8V to 3.3V
- Digital Core Supply: 1.8V
- APPLICATIONS
- 3-Phase Power Monitors
- Defibrillators and ECG Monitors
- Coriolis Flow Meters
- Vibration/Modal Analysis
PowerPAD is a trademark of Texas Instruments.
SPI is a trademark of Motorola, Inc.
The ADS1174 (quad) and ADS1178 (octal) are multiple delta-sigma (ΔΣ) analog-to-digital converters (ADCs) with data rates up to 52k samples-per-second (SPS), which allow synchronous sampling of four and eight channels. These devices use identical packages, and are also compatible with the high-performance 24-bit ADS1274 and ADS1278, permitting drop-in upgrades.
The delta-sigma architecture offers near ideal 16-bit ac performance (97dB SNR, -105dB THD, 1LSB linearity) combined with 0.005dB passband ripple and linear phase response.
The high-order, chopper-stabilized modulator achieves very low drift (2µV/°C offset, 2ppm/°C gain) and low noise (1LSBPP). The on-chip finite impulse response (FIR) filter provides a usable signal bandwidth up to 90% of the Nyquist rate with 100dB of stop band attenuation while suppressing modulator and signal out-of-band noise.
Two operating modes allow for optimization of speed and power: High-speed mode (31mW/Ch at 52kSPS), and Low-power mode (7mW/Ch at 10kSPS).
A SYNC input control pin allows the device conversions to be started and synchronized to an external event. SPI and Frame-Sync serial interfaces are supported. The device is fully specified over the extended industrial range (40°C to +105°C) and is available in an HTQFP-64 PowerPAD package.
技术文档
| 顶层文档 | 类型 | 标题 | 格式选项 | 下载最新的英语版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 数据表 | Quad/Octal, Simultaneous Sampling, 16-Bit Analog-to-Digital Converters 数据表 (Rev. B) | 2008-9-12 | |||
| 应用简报 | ADS1278QML-SP 上电复位程序 | PDF | HTML | PDF | HTML | 2026-7-10 | ||
| 应用手册 | Δ-Σ ADC 中的数字滤波器类型 (Rev. A) | PDF | HTML | 英语版 (Rev.A) | PDF | HTML | 2023-4-13 | |
| 电子书 | Fundamentals of Precision ADC Noise Analysis (Rev. A) | 2020-6-19 | ||||
| 模拟设计期刊 | How delta-sigma ADCs work, Part 1 (Rev. A) | 2016-9-19 | ||||
| 白皮书 | Voltage-reference impact on total harmonic distortion | 2016-8-1 | ||||
| 模拟设计期刊 | ΔΣ ADC工作原理 | 英语版 | 2012-1-13 |
设计与开发
如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。
ADS1278EVM-PDK — ADS1278 评估模块
ADS117XSW-LINUX — ADS117x Linux 驱动程序
The Linux driver supports the ADS117x family of Quad/Octal, Simultaneous Sampling, 16-Bit Analog-to-Digital Converters. The Linux driver supports communication through the SPI bus and interfaces with the Linux DAPM (Dynamic Audio Power Management for Portable Devices) class.
Linux Mainline Status
(...)
ADS1X7X-EXCEL-CALC-TOOL — ADS1x7x Design Calculator
- ADS1x7x Excel 计算器工具为用户提供多种易于使用的工具，用于简化 ADS1x7x 的配置。该工具可帮助用户了解不同的设置和工作模式，以便优化使用 ADS1x7x 宽带宽模数转换器 (ADC) 进行的设计。该工具包括 ADC 转换计算器、数字滤波器响应计算器、菊花链配置选项卡和 SNR 评估器。ADS1x7x 计算器可以消除常见的编程和器件设置障碍，从而缩短上市时间。
ANALOG-ENGINEER-CALC — PC software analog engineer's calculator
模拟工程师计算器旨在加快模拟电路设计工程师经常运用的许多重复性计算。该基于 PC 的工具提供图形界面，其中显示各种常见计算列表，从使用反馈电阻器设置运算放大器增益到选择合适的电路设计元件，以稳定模数转换器 (ADC) 驱动器缓冲器电路。
除了可用作独立工具之外，该计算器还能很好地与模拟工程师口袋参考中所述的概念配合使用。
ADC-DAC-TO-VREF-SELECT-DESIGN-TOOL — The ADC-TO-VREF-SELECT tool enables the pairing of TI ADCs, DACs, and series voltage references.
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| HTQFP (PAP) | 64 | Ultra Librarian |
订购和质量
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