Cypress's PSoC programmable system-on-chip architecture gives you the freedom to not only design revolutionary new products, but also the capability to get those products to market faster than anyone else. PSoC integrates more analog functionality than any other mixed-signal embedded solution available, and provides high performance and precision analog components such as an integrated 20-bit Delta Sigma ADC.
What is a Delta-Sigma ADC?
The PSoC 3 & PSoC 5 Delta-Sigma Analog to Digital Converter (ADC_DelSig) has a low power and low noise front end for precision measurement applications. The ADC_DelSig is usable in a wide range of applications depending on resolution, sampling rate and operating mode. For more in-depth information, refer to the "Getting Started with Delta-Sigma ADC" document.
MCU's Can't, PSoC Can
Advantages of having Delta Sigma ADCs
• The PSoC 3 & PSoC 5 Delta-Sigma ADC has the industries best-in-class precision analog performance, with an adjustable resolution of 8 to 20 bits (device dependent) and a sampling rate of up to 384 ksps. The integrated Delta-Sigma ADC allows for precision analog capability across an entire voltage range of 0.5V to 5.5V. The Delta-Sigma ADC enables measurements in the micro volt range and gives a precision of up to 0.003%.
• The PSoC 3 & PSoC 5 Delta-Sigma ADC offers both single ended (SE) and differential input ADC capability. The differential signal input allows for signals from –V to V as compared to the SE which can only take inputs of 0 to V. The differential inputs are less susceptible to input common mode noise and are often used for higher resolution applications. Also, some types of sensors like bridge sensors (pressure, load, and force) have a differential output, which means they require ADCs with differential inputs.
• Like all other PSoC Creator components, functions are pre-written for the Delta-Sigma ADC - all the user has to do is to call those functions. No need to be an expert in coding to get a project done in PSoC Creator.
Discover the Power of PSoC Creator
One of the biggest advantages of the Delta-Sigma ADC comes from the flexibility that PSoC Creator provides:
 • Using PSoC creator makes finding information regarding the part extremely easy. By simply right clicking on the ADC del_seg component, one can find all the necessary information through its data sheet.
• The GUI in PSoC Creator allows you to easily configure the ADC in any way you desire. You can configure it with a variety of ranges, resolutions, sample rates, and input buffer and gain modes. What’s even better is that you can create four different configurations to switch from one to the other during run time.
• Like all other PSoC Creator components, the software is pre-written so all the user has to do is use the function calls provided. The set of APIs that convert analog voltage to a digital value are already available and alleviates the need for additional code from the user.
• This powerful tool allows for data from the ADC to be transferred from the ADC to an on-board RAM, to a communication component, or the Digital Function Block (DFB) where the data can be filtered. Furthermore, if you require a mixer or a Transimpedance Amplifier (TIA) and Programmable Gate Array (PGA) on any pin before an ADC, PSoC gives you this capability. To demonstrate the flexibility of this product, an example is shown below in figure 2: |
Programmable Signal Chain
• Highly configurable analog blocks provide flexibility through the design.
• System solutions enabled by programmable analog blocks & flexible analog routing.
• Further flexibility provided by integrated CPU and programmable logic (UDBs).
• BOM integration: cost, IP protection, board size, power, ease-of-design.
• PSoC Creator enables easy component configuration & routing.