ADS1246 极低噪音、精密 24 位 模数转换器
ADS1246 相关产品
- ADS1248 - The ADS1248 has 4 Differential/7 Single-Ended Inputs as well as additional GPIO, onboard v-ref, and dual current DACs.
- ADS1247 - The ADS1247 has 2 Differential/3 Single-Ended Inputs as well as additional GPIO, onboard v-ref, and dual current DACs.
The ADS1246, ADS1247, and ADS1248 are highly-integrated, precision, 24-bit analog-to-digital converters (ADCs). The ADS1246/7/8 feature an onboard, low-noise, programmable gain amplifier (PGA), a precision delta-sigma ADC with a single-cycle settling digital filter, and an internal oscillator. The ADS1246 and ADS1248 also provide a built-in, very low drift voltage reference with 10mA output capacity, and two matched programmable current digital-to-analog converters (DACs). The ADS1246/7/8 provide a complete front-end solution for temperature/bridge sensor applications including thermal couples, thermistors, RTDs, and strain-gauge applications.
An input multiplexer supports four differential inputs for the ADS1248, two for the ADS1246, and one for the ADS1246.
|
ADS1146 |
ADS1147 |
ADS1148 |
ADS1246 |
ADS1247 |
ADS1248 |
| Resolution(Bits) |
16 |
16 |
16 |
24 |
24 |
24 |
| Sample Rate (max) |
2kSPS |
2kSPS |
2kSPS |
2KSPS |
2KSPS |
2KSPS |
| Architecture |
Delta-Sigma |
Delta-Sigma |
Delta-Sigma |
Delta-Sigma |
Delta-Sigma |
Delta-Sigma |
| Power Consumption(Typ)(mW) |
1.2 |
1.2 |
1.2 |
2.56 |
2.56 |
2.56 |
| DNL(Max)(+/-LSB) |
1 |
1 |
1 |
1 |
1 |
1 |
| INL(Max)(+/-LSB) |
0.0015% |
0.0015% |
0.0015% |
0.0015% |
0.0015% |
0.0015% |
| No Missing Codes(Bits) |
15 |
15 |
15 |
24 |
24 |
24 |
| No. of Supplies |
3 |
3 |
3 |
3 |
3 |
3 |
| Analog Voltage AV/DD(Min)(V) |
2.5 |
2.5 |
2.5 |
2.5 |
2.5 |
2.5 |
| Analog Voltage AV/DD(Max)(V) |
5.8 |
5.8 |
5.8 |
5.8 |
5.8 |
5.8 |
| Logic Voltage DV/DD(Min)(V) |
2.5 |
2.5 |
2.5 |
2.5 |
2.5 |
2.5 |
| Logic Voltage DV/DD(Max)(V) |
5.8 |
5.8 |
5.8 |
5.8 |
5.8 |
5.8 |
| Input Configuration Range |
+/- Vref / PGA |
+/- Vref / PGA |
+/- Vref / PGA |
+/- Vref / PGA |
+/- Vref / PGA |
+/- Vref / PGA |
| Reference Mode |
Ext |
Int and Ext |
Int and Ext |
Ext |
Int and Ext |
Int and Ext |
| Rating |
Catalog |
Catalog |
Catalog |
Catalog |
Catalog |
Catalog |
| Pin/Package |
16TSSOP |
20TSSOP |
28TSSOP |
16TSSOP |
20TSSOP |
28TSSOP |
| # Input Channels |
1 |
3 |
7 |
1 |
3 |
7 |
| Operating Temp Range(Celsius) |
-40 to 125 |
-40 to 125 |
-40 to 125 |
-40 to 105 |
-40 to 105 |
-40 to 105 |
ADS1246 特性
- 24 Bits, No Missing Codes
- Data Output Rates Up to 2kSPS
- Single-Cycle Settling for All Data Rates
- Simultaneous 50/60Hz Rejection at 20SPS
- 4 Differential/7 Single-Ended Inputs (ADS1248)
- 2 Differential/3 Single-Ended Inputs (ADS1246)
- Low-Noise PGA: 48nV at PGA = 128
- Matched Current Source DACs
- Very Low Drift Internal Voltage Reference: 10ppm/°C (max)
- Sensor Burnout Detection
- 4/8 General-Purpose I/Os (ADS1246/48)
- Internal Temperature Sensor
- Power Supply and VREF Monitoring (ADS1246/48)
- Self and System Calibration
- SPI-Compatible Serial Interface
- Analog Supply Unipolar (+2.7V to +5.25V)/Bipolar (±2.5V) Operation
- Digital Supply: +2.7V to +5.25V
- Operating Temperature -40°C to +125°C
- APPLICATIONS
ADS1246 芯片订购指南
ADS1246 工具与软件
| 名称 |
型号 |
公司 |
工具/软件类型 |
| ADS1246 性能演示套件 |
ADS1246EVM-PDK |
Texas Instruments |
开发电路板/EVM |
| ADS1246 评估模块 |
ADS1246EVM |
Texas Instruments |
开发电路板/EVM |
| 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 |
ADS1246 质量与无铅数据
ADS1246 应用技术支持与电子电路设计开发资源下载
- ADS1246 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)
