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德州仪器的四路128kHz24 位同步采样 - ADC ADS1274IPAPT
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TI 主页 > 半导体 > 数据转换器 > 模数转换器 > 精密 ADC (<=10MSPS) > ADS1274IPAPT
德州仪器的四路、128kHz、24 位同步采样 Σ-Δ ADC ADS1274IPAPT
Quad/Octal, Simultaneous Sampling, 24-Bit Analog-to-Digital Converters

TI的四路精密模数转换IC ADS1274IPAPT的说明
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.

TI的四路精密模数转换IC ADS1274IPAPT的特性
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

TI的四路精密模数转换IC ADS1274IPAPT的应用
Vibration/Modal Analysis 振动模态分析
Multi-Channel Data Acquisition 多通道数据采集
Acoustics/Dynamic Strain Gauges 声学/动态应变仪
Pressure Sensors 压力传感器
德州仪器的四路128kHz24 位同步采样 - ADC ADS1274IPAPT
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