로드셀 앰프 -ADS1230
(LOAD CELL 7 CLICK)
개요
- 본 제품은 로드셀 앰프 -ADS1230 입니다.
- 20비트 ADC ADS1230 칩을 기반으로 디자인한 제품입니다.
- SPI 인터페이스를 가지고 있으며, 솔더 점퍼를 설정하여 3.3V나 5V시스템과 사용이 가능합니다.
특징
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Load Cell 7 Click as its foundation uses the ADS1230, a high accuracy, low noise, and low power 20-bit ΣΔ ADC with an outstanding noise performance from Texas Instruments. It includes a low-noise PGA, internal oscillator, third-order delta-sigma (ΔΣ) modulator, and fourth-order digital filter, thus providing a complete front-end solution for bridge sensor applications. The ADS1230 is easy to configure, and all digital control is accomplished through dedicated pins; there are no registers to program. The conversions from the ADS1230 are sent to the MCU through SPI serial interface, with the digital information converted to weight.
The low-noise PGA has a selectable gain, performed by an onboard SMD jumper labeled as GAIN SEL to an appropriate position marked as 64 and 128, supporting a full-scale differential input of ±39mV or ±19.5mV, respectively. Besides, data can be output at 10SPS for excellent 50Hz and 60Hz rejection or at 80SPS when higher speeds are needed. The onboard SMD jumper labeled SPS SEL can select this feature, placing it in an appropriate position marked as 10 and 80. The ADS1230 can be put in a low-power standby mode or shut off completely in power-down mode.
This Click board™ uses the 4-wire load cell configuration, with two sense pins and two output connections. The load cell differential S lines connected to the AD7780 reference inputs create a ratiometric configuration immune to low-frequency changes in the power supply excitation voltage. Those sense pins are connected to the high and low sides of the Wheatstone bridge, where voltage can be accurately measured, regardless of the voltage drop due to the wiring resistance.
This Click board™ can operate with both 3.3V and 5V logic voltage levels selected via the VCC SEL jumper. This way, it is allowed for both 3.3V and 5V capable MCUs to use the communication lines properly. However, the Click board™ comes equipped with a library containing easy-to-use functions and an example code that can be used, as a reference, for further development.
SPECIFICATIONS
Type Force Applications Can be used for bridge sensor applications, including industrial process control, weigh scales, and strain gauges On-board modules ADS1230 - 20-bit delta-sigma analog-to-digital converter (ADC) from Texas Instruments Key Features High precision, outstanding noise performance, selectable gain and data rate, complete front-end for bridge sensor, low power consumption, and more Interface SPI Compatibility mikroBUS Click board size M (42.9 x 25.4 mm) Input Voltage 3.3V or 5V
문서
연관제품
- 연관제품 1
