The ADS1232 and ADS1234 (ADS123x) are precision, 24-bit, analog-to-digital converters (ADCs). With a low-noise programmable gain amplifier (PGA), a precision delta-sigma ADC, and internal oscillator. The ADS123x provides a complete front-end solution for bridge sensor applications including weigh scales, strain gauges, and pressure sensors.
An input multiplexer (MUX) accepts either two (ADS1232) or four (ADS1234) differential inputs. The ADS1232 also includes a temperature sensor to monitor ambient temperature. The low-noise PGA has a selectable gain of 1, 2, 64, or 128, supporting a full-scale differential input of ±2.5V, ±1.25V, ±39mV, or ±19.5mV.
The delta-sigma ADC provides a maximum of 23.5-bits effective resolution, and supports two data rates: 10SPS (providing 50Hz and 60Hz rejection) and 80SPS. The ADS123x can be clocked externally using an oscillator or a crystal, or by the internal oscillator.
Offset calibration is performed on-demand, and the ADS123x can be put in a low-power standby mode or shut off completely in power-down mode. The ADS123x are operated through simple pin-driven control—there are no digital registers to program.
Data are output over a two-wire serial interface that connects directly to the MSP430 and other microcontrollers.
| 상위 문서 | 유형 | 직함 | 형식 옵션 | 날짜 |
|---|---|---|---|---|
| * | Data sheet | ADS123x 2- and 4-Channel, 24-Bit, Delta-Sigma ADCs for Bridge Sensors datasheet (Rev. H) | PDF | HTML | 2025/06/02 |
| Application note | Calculating Conversion Latency and System Cycle Time for Delta-Sigma ADCs (Rev. A) | PDF | HTML | 2024/03/18 | |
| Application note | A Basic Guide to Bridge Measurements (Rev. A) | PDF | HTML | 2024/03/13 | |
| Application note | Digital Filter Types in Delta-Sigma ADCs (Rev. A) | PDF | HTML | 2023/03/29 | |
| E-book | Fundamentals of Precision ADC Noise Analysis (Rev. A) | 2020/06/19 | ||
| Application note | Industrial data-acquisition interfaces with digital isolators (Rev. A) | 2018/10/02 | ||
| E-book | Best of Baker's Best: Precision Data Converters -- Delta-Sigma ADCs | 2015/03/19 | ||
| Application note | Delta-Sigma ADC Design for Bridge Sensor Applications | 2011/09/30 | ||
| White paper | Complete Front End Solutions for Weigh Scales | 2007/06/14 |
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The analog engineer’s calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting operational-amplifier (...)
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| TSSOP (PW) | 28 | Ultra Librarian |
Analog Engineer's Calc Installer
General calculator tool for analog design support.
This is the first release of this tool.