ADS1245 24 位低功耗 ADC，具有高 Z 输入 缓冲器
ADS1245 相关产品
- ADS1244 - 器件与被比较器件具有相似功能，但并不功能等效。 5V input voltage as compared to ADS1245's 2.5V
- ADS1258 - 器件与被比较器件具有相似功能，但并不功能等效。 8 channel differential device with very high sampling rate
| ADS1244 | ADS1245 | |
| Resolution(Bits) | 24 | 24 |
| Sample Rate (max) | 30SPS | 15SPS |
| Architecture | Delta-Sigma | Delta-Sigma |
| Power Consumption(Typ)(mW) | 0.27 | 0.47 |
| DNL(Max)(+/-LSB) | 1 | 1 |
| INL(Max)(+/-LSB) | 0.0002% | 0.0006% |
| No Missing Codes(Bits) | 24 | 24 |
| No. of Supplies | 2 | 2 |
| Analog Voltage AV/DD(Min)(V) | 2.5 | 2.5 |
| Analog Voltage AV/DD(Max)(V) | 5.25 | 5.25 |
| Logic Voltage DV/DD(Min)(V) | 1.8 | 1.8 |
| Logic Voltage DV/DD(Max)(V) | 3.6 | 3.6 |
| Input Configuration Range | 2Vref | 2Vref |
| Reference Mode | Ext | Ext |
| Rating | Catalog | Catalog |
| Pin/Package | 10MSOP | 10MSOP |
| # Input Channels | 1 | 1 |
| Operating Temp Range(Celsius) | -40 to 85 | -40 to 85 |
The ADS1245 is a 24-bit, delta-sigma analog-to-digital converter (ADC). It offers excellent performance and very low power in an MSOP-10 package and is well suited for demanding high-resolution measurements, especially in portable and other space- and power-constrained systems.
The buffered input presents an impedance of 3G, minimizing measurement errors when using high-impedance sources. The ADS1245 is compatible with ADS1244 and offers a direct upgrade path for designs requiring higher input impedance.
A third-order delta-sigma (
) modulator and digital filter form the basis of the ADC. The analog modulator has a ±2.5V differential input range. The digital filter rejects both 50Hz and 60Hz signals, completely settles in one cycle, and outputs data at 15 samples per second (SPS).
ADS1245 特性
- 20-Bit Effective Resolution
- High-Impedance Buffered Input
- ±2.5V Differential Input Range
- Pin-Compatible with ADS1244
- 0.0006% INL (typ), 0.0015% INL (max)
- Simple Two-Wire Serial Interface
- Simultaneous 50Hz and 60Hz Rejection
- Single Conversions with Sleep Mode
- Single-Cycle Settling
- Self-Calibration
- Well Suited for Multi-Channel Systems
- Easily Connects to the MSP430
- Current Consumption: 158uA
- Analog Supply: 2.5V to 5.25V
- Digital Supply: 1.8V to 3.6V
- APPLICATIONS
- Hand-Held Instrumentation
- Portable Medical Equipment
- Industrial Process Control
- Test and Measurement Systems
ADS1245 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 |
| ADS1245IDGSR | ACTIVE | -40 to 85 | 3.90 | 1ku | MSOP(DGS) | 10 | 2500 | LARGE T&R | BHI |
| ADS1245IDGSRG4 | ACTIVE | -40 to 85 | 3.90 | 1ku | MSOP(DGS) | 10 | 2500 | LARGE T&R | BHI |
| ADS1245IDGST | ACTIVE | -40 to 85 | 4.30 | 1ku | MSOP(DGS) | 10 | 250 | SMALL T&R | BHI |
| ADS1245IDGSTG4 | ACTIVE | -40 to 85 | 4.30 | 1ku | MSOP(DGS) | 10 | 250 | SMALL T&R | BHI |
ADS1245 工具与软件
| 名称 | 型号 | 公司 | 工具/软件类型 |
| 用于模数转换器的抗混淆计算工具 | ANTIALIASINGCALC | Texas Instruments | 计算实用程序 |
| 运算放大器至 ADC 电路拓扑计算器 | ADC-INPUT-CALC | Texas Instruments | 计算实用程序 |
ADS1245 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 |
| ADS1245IDGSR | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-2-260C-1 YEAR | ADS1245IDGSR | ADS1245IDGSR |
| ADS1245IDGSRG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-2-260C-1 YEAR | ADS1245IDGSRG4 | ADS1245IDGSRG4 |
| ADS1245IDGST | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-2-260C-1 YEAR | ADS1245IDGST | ADS1245IDGST |
| ADS1245IDGSTG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-2-260C-1 YEAR | ADS1245IDGSTG4 | ADS1245IDGSTG4 |
ADS1245 应用技术支持与电子电路设计开发资源下载
- ADS1245 数据资料 dataSheet 下载.PDF
- TI 德州仪器仪ADC 模数转换器产品选型与价格 . xls
- 模数规格和性能特性术语表 (Rev. A) (PDF 1993 KB)
- 所选封装材料的热学和电学性质 (PDF 645 KB)
- 高速数据转换 (PDF 1967 KB)
- Shelf-Life Evaluation of Lead-Free Component Finishes (PDF 1305 KB)
- A Spreadsheet for Calculating the Frequency Response of the ADS1250-54 (PDF 461 KB)
- A Spreadsheet for Calculating the Frequency Response of the ADS1250-54
- Understanding the ADS1251, ADS1253, and ADS1254 Input Circuitry (PDF 39 KB)
- Analog-to-Digital Converter Grounding Practices Affect System Performance (PDF 56 KB)
- Principles of Data Acquisition and Conversion (PDF 50 KB)
- Interleaving Analog-to-Digital Converters (PDF 64 KB)
- What Designers Should Know About Data Converter Drift (PDF 95 KB)
- Giving Delta-Sigma Converters a Gain Boost with a Front End Analog Gain Stage (PDF 70 KB)
- Programming Tricks for Higher Conversion Speeds Utilizing Delta Sigma Converters (PDF 105 KB)