ADS1278-HT 高温四路/八路 24 位同步采样模数转换器
Based on the single-channel ADS1271, the ADS1278 (octal) is a 24-bit, delta-sigma () analog-to-digital converter (ADC) with data rates up to 128 k samples per second (SPS), allowing simultaneous sampling of eight channels.
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 ADS1278 combines these types of converters, allowing high-precision industrial measurement with excellent dc and ac specifications
|
ADS1278-HT |
| Resolution (Bits) |
24 |
| Sample Rate (max) (SPS) |
144kSPS |
| # Input Channels |
8 |
| Interface |
Serial SPI Interface |
| DNL (Max) (+/-LSB) |
1 |
| INL (Max) (+/-LSB) |
0.0003 |
| INL (+/-) (Max) (%) |
0.0014 |
| SNR (dB) |
111 |
| Input Range |
Vref |
| Power Consumption (Typ) (mW) |
530 |
| Reference Mode |
Ext |
| Architecture |
Delta-Sigma |
| Analog Voltage AV/DD (Min) (V) |
4.75 |
| Analog Voltage AV/DD (Max) (V) |
5.25 |
| Digital Supply (Min) (V) |
1.65 |
| Digital Supply (Max) (V) |
3.6 |
| Rating |
High Temp |
| Operating Temperature Range (C) |
-55 to 210 |
| Pin/Package |
84CFP |
ADS1278-HT 特性
- Simultaneously Measure Eight Channels
- Up to 128-kSPS Data Rate
- AC Performance:
62-kHz Bandwidth
111-dB SNR (High-Resolution Mode)
–108-dB THD
- DC Accuracy:
0.8-µV/°C Offset Drift
1.3-ppm/°C Gain Drift
- Selectable Operating Modes:
High-Speed: 128 kSPS, 106 dB SNR
High-Resolution: 52 kSPS, 111 dB SNR
Low-Power: 52 kSPS, 31 mW/ch
Low-Speed: 10 kSPS, 7 mW/ch
- Linear Phase Digital Filter
- SPI™ or Frame-Sync Serial Interface
- Low Sampling Aperture Error
- Modulator Output Option (digital filter bypass)
- Analog Supply: 5 V
- Digital Core: 1.8 V
- I/O Supply: 1.8 V to 3.3 V
- Currently Available in an 84-Pin HFQ Package and a KGD Chiptray Option
- SUPPORTS EXTREME TEMPERATURE APPLICATIONS
- Controlled Baseline
- One Assembly/Test Site
- One Fabrication Site
- Available in Extreme (–55°C/210°C) Temperature Range(1)
- Extended Product Life Cycle
- Extended Product-Change Notification
ADS1278-HT 芯片订购指南
| 器件 |
状态 |
温度 (oC) |
价格（美元） |
封装 | 引脚 |
封装数量 | 封装载体 |
丝印标记 |
| 5962-0924001VXC |
ACTIVE |
-55 to 125 |
9500.24 | 100u |
CFP (HFS) | 100 |
1 | BULK |
|
| ADS5400MHFSV |
ACTIVE |
-55 to 125 |
9500.24 | 100u |
CFP (HFS) | 100 |
1 | BULK |
|
ADS1278-HT 质量与无铅数据
| 器件 |
环保计划* |
铅/焊球涂层 |
MSL 等级/回流焊峰 |
环保信息与无铅 (Pb-free) |
DPPM / MTBF / FIT 率 |
| 5962-0924001VXC |
TBD |
AU |
N/A for Pkg Type |
5962-0924001VXC |
5962-0924001VXC |
| ADS5400MHFSV |
TBD |
Call TI |
N/A for Pkg Type |
ADS5400MHFSV |
ADS5400MHFSV |
ADS1278-HT 应用技术支持与电子电路设计开发资源下载
- ADS1278-HT 数据资料 dataSheet 下载.PDF
- TI 德州仪器数据转换器选型与价格参考 . xls
- 模数规格和性能特性术语表 (Rev. A)
- 所选封装材料的热学和电学性质
- 高速数据转换
- A Glossary of Analog-to-Digital Specifications and Performance Characteristics
- Shelf-Life Evaluation of Lead-Free Component Finishes
- Analog-to-Digital Converter Grounding Practices Affect System Performance
- Principles of Data Acquisition and Conversion
- Interleaving Analog-to-Digital Converters
- What Designers Should Know About Data Converter Drift
