ADS1231 低噪声、24 位模数转换器
ADS1231 说明
The ADS1231 is a precision, 24-bit analog-to-digital converter (ADC). With an onboard, low-noise amplifier, onboard oscillator, precision 24-bit delta-sigma (
) ADC, and bridge power switch, the ADS1231 provides a complete front-end solution for bridge sensor applications including weigh scales, strain gauges, and load cells.
The low-noise amplifier has a gain of 128, supporting a full-scale differential input of ±19.5mV. The ADC has 24-bit effective resolution and is comprised of a third-order modulator and fourth-order digital filter. Two data rates are supported: 10SPS (with both 50Hz and 60Hz rejection) and 80SPS. The ADS1231 can be clocked by the internal oscillator or an external clock source. The ADS1231 can be put in a low-power standby mode or shut off completely in power-down mode.
|
ADS1130 |
ADS1131 |
ADS1230 |
ADS1231 |
ADS1232 |
ADS1234 |
| Resolution(Bits) |
18 |
|
20 |
|
24 |
24 |
| Sample Rate (max) |
80SPS |
|
80SPS |
80SPS |
80SPS |
80SPS |
| Architecture |
Delta-Sigma |
Delta-Sigma |
Delta-Sigma |
Delta-Sigma |
Delta-Sigma |
Delta-Sigma |
| Power Consumption(Typ)(mW) |
2.9 |
2.9 |
2.9 |
2.9 |
4.3 |
4.3 |
| DNL(Max)(+/-LSB) |
1 |
1 |
1 |
1 |
1 |
1 |
| INL(Max)(+/-LSB) |
0.0006% |
|
0.0006% |
0.0006% |
0.0002% |
0.0002% |
| No Missing Codes(Bits) |
18 |
18 |
20 |
24 |
24 |
24 |
| ENOB(Bits) |
17.5 |
17.5 |
19.5 |
23.5 |
23.5 |
23.5 |
| No. of Supplies |
2 |
2 |
2 |
2 |
2 |
2 |
| Analog Voltage AV/DD(Min)(V) |
2.7 |
2.7 |
2.7 |
2.7 |
2.7 |
2.7 |
| Analog Voltage AV/DD(Max)(V) |
5.3 |
5.3 |
2.3 |
5.3 |
5.3 |
5.3 |
| Logic Voltage DV/DD(Min)(V) |
2.7 |
2.7 |
2.7 |
|
2.7 |
2.7 |
| Logic Voltage DV/DD(Max)(V) |
5.3 |
5.3 |
5.3 |
|
5.3 |
5.3 |
| Input Configuration Range |
0.5Vref/PGA (1,2,64) |
0.5Vref/PGA |
0.5Vref/PGA (1,2,64,128) |
0.5Vref/PGA |
0.5Vref/PGA (1,2,64,128) |
0.5Vref/PGA (1,2,64,128) |
| Reference Mode |
Ext |
Ext |
Ext |
EXT |
Ext |
Ext |
| Rating |
Catalog |
Catalog |
Catalog |
Catalog |
Catalog |
Catalog |
| Pin/Package |
16TSSOP |
16TSSOP |
16TSSOP |
16TSSOP |
24TSSOP |
28TSSOP |
| # Input Channels |
1 |
1 |
1 |
1 |
2 |
4 |
| Operating Temp Range(Celsius) |
-40 to 85 |
|
-40 to 85 |
|
-40 to 105 |
-40 to 105 |
ADS1231 特性
- Complete Front-End for Bridge Sensor
- Internal Amplifier, Gain of 128
- Internal/External Oscillator
- Low-Side Power Switch for Bridge Sensor
- RMS Noise:
40nV at 10SPS
88nV at 80SPS
- Selectable 10SPS or 80SPS Data Rates
- Simultaneous 50Hz and 60Hz Rejection at 10SPS
- External Voltage Reference up to 5V for
Ratiometric Measurements
- Simple, Pin-Driven Control
- Two-Wire Serial Digital Interface
- Tiny TSSOP-16 Package
- Supply Range: 2.7V to 5.3V
- –40°C to +85°C Temperature Range
- APPLICATIONS
- Weigh Scales
- Strain Gauges
- Load Cells
- Industrial Process Control
ADS1231 芯片订购指南
| 器件 |
状态 |
封装 | 引脚 |
封装数量 | 封装载体 |
丝印标记 |
| ADS1231CPW |
PREVIEW |
TSSOP (PW) | 16 |
90 |
|
| ADS1231CPWR |
PREVIEW |
TSSOP (PW) | 16 |
2000 |
|
| ADS1231IPW |
PREVIEW |
TSSOP (PW) | 16 |
90 |
|
| ADS1231IPWR |
PREVIEW |
TSSOP (PW) | 16 |
2000 |
|
ADS1231 应用技术支持与电子电路设计开发资源下载
- ADS1231 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)
ADS1231 工具与软件