WMS7202010P vs WMS7202100P
| Part Number |
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| Category | Digital Potentiometers ICs | Digital Potentiometers ICs |
| Manufacturer | Nuvoton Technology Corporation of America | Nuvoton Technology Corporation of America |
| Description | IC DGTL POT 10KOHM 256TAP 14DIP | IC DGT POT 100KOHM 256TAP 14DIP |
| Package | Tube | Tube |
| Series | - | - |
| Features | Cascade Pin | Cascade Pin |
| Interface | SPI | SPI |
| Voltage - Supply | 2.7V ~ 5.5V | 2.7V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Through Hole | Through Hole |
| Package / Case | 14-DIP (0.300\", 7.62mm) | 14-DIP (0.300\", 7.62mm) |
| Supplier Device Package | 14-PDIP | 14-PDIP |
| Tolerance | ±20% | ±20% |
| Number of Circuits | 2 | 2 |
| Configuration | Potentiometer | Potentiometer |
| Memory Type | Non-Volatile | Non-Volatile |
| Taper | Linear | Linear |
| Number of Taps | 256 | 256 |
| Resistance (Ohms) | 10k | 100k |
| Temperature Coefficient (Typ) | 500ppm/°C | 500ppm/°C |
| Resistance - Wiper (Ohms) (Typ) | 80 | 80 |
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1. What is a digital potentiometer IC?
A digital potentiometer IC is a new type of CMOS digital and analog mixed signal processing integrated circuit that generates an analog output through digital input control and can replace traditional mechanical potentiometers. Digital potentiometers are also called programmable resistors or digitally controlled programmable resistors. They achieve circuit adjustment through CPU digital communication without the need to build a complex circuit environment.
Digital potentiometer ICs have many unique features and advantages. First, they do not require a wiper, making them more rugged and reliable. Second, digital potentiometers can be controlled, set, and change resistance values or voltage divider ratios through processors and software, providing flexibility and precision that mechanical devices cannot match. In addition, digital potentiometers can also be remotely adjusted through firmware to meet the requirements of high reliability and precise control.
There are several factors to consider when selecting a digital potentiometer IC. First, select the number of potentiometers and the number of sliders based on application requirements. Second, consider the resistance value of the resistor and whether there is a buffer contact. Finally, you also need to consider the packaging form and whether you need to remember the position when power is off. -
2. What are the components of a digital potentiometer?
A digital potentiometer mainly consists of two parts: a voltage divider and a controller.
The voltage divider consists of a series of resistor elements that divide the input voltage according to a certain ratio. Each resistor element is connected to the input pin of the controller. The controller is responsible for reading the control signal and opening or closing the corresponding switch according to the level of the signal, thereby changing the total resistance. -
3. What is the difference between IC and digital IC?
The main difference between IC and digital IC is that they process different types of signals. IC processes continuously changing analog signals, while digital IC processes discrete digital signals.
Specifically, IC (integrated circuit) is a microelectronic device or component that uses a certain process to interconnect transistors, resistors, capacitors and other components and wiring, and is made on a small piece of semiconductor wafer, and then packaged to form a circuit with specific functions. Integrated circuits have the advantages of small size, light weight, long life and high reliability.
Digital IC specializes in processing digital signals, which are discrete in time and amplitude. The design focus of digital IC is on the optimization of logical relationships and system architecture, pursuing the smallest line width, lowest power consumption and fastest transmission speed. Examples of digital ICs include CPUs, microprocessors, microcontrollers, etc., which are widely used in computers and other digital systems. -
4. How to use digital potentiometers?
Digital potentiometers are a new type of CMOS digital and analog mixed signal processing integrated circuit that replaces traditional mechanical potentiometers. It is controlled by digital inputs, produces an analog output, and has precise resistance adjustment functions.
The basic components of digital potentiometers include voltage dividers and controllers. The voltage divider consists of a series of resistor elements that divide the input voltage according to a certain ratio; the controller is responsible for reading the control signal and opening or closing the corresponding switch according to the high or low signal, thereby changing the size of the total resistance.
When using a digital potentiometer, you first need to make a hardware connection. For example, connect the encoding mode of the EC11 digital potentiometer to a specific pin of the timer. Then, the mode of the encoder is controlled by software to adjust the digital potentiometer. The specific operations include entering the potentiometer mode, adjusting the value, and saving the setting.
