ISL90840WAV2027Z

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The ISL90840WAV2027Z is a member of the family of digital potentiometers, a data acquisition device that uses an internal electronically controlled resistive element, typically a resistive-ladder network, to adjust the resistance or gain of a circuit. The device operates over a voltage range of 1.8 to 5.5V and provides an adjustable output voltage of 0 to VDD as well as a non-volatile memory for storing configuration data settings.

The ISL90840WAV2027Z is a quad potentiometer part with a 10-bit resolution, which is divided into 2x static and 2x volatile elements. It is designed to reduce board space and the number of components within general purpose data acquisition systems. Its static elements offer 32 resistance settings, allowing for up to 128 taps on a single device. It also provides a control into the non-volatile memory with a 256-step resolution and an output voltage range of 0 to VDD. This allows settings to be retained under power cycles and in the event of a power failure. Additionally, the linear and logarithmic spatial resolution provides a more linear control of gain settings across the temperature range. The ISL90840WAV2027Z is equipped with EEPROM memory, I2C and two serial interfaces, and operates over a temperature range of -40°C to 125°C.

The ISL90840WAV2027Z is a versatile device with a host of features and advantages. It features low power consumption and a high reliability and can be used in a wide range of applications including: motor controllers, audio mixing and equalization, volume control, noise suppression, and robotics. Its internal architecture provides for an efficient data transition and storage. Its separate static and volatile elements enable faster and more reliable overall gains. Furthermore, its multiple serial I2C and SPI interfaces aid in providing flexibility and a seamless integrated design.

The ISL90840WAV2027Z digital potentiometer enables data acquisition using variable resistances and gain settings. The device includes a resistive ladder that can be adjusted electrically through the application of a DC voltage or current. Adjustments to the resistance or gain of the device are performed by adjusting this ladder at the desired level. A control word is then stored into the internal non-volatile memory. This control word contains the required setpoint for the gains. This control word can also be written to the device to override the previous settings at any time.

The ISL90840WAV2027Z is ideal for applications that require variable resistance, gain settings and the ability to read back data from the device. The device is capable of providing a range of outputs and the accuracy of the output is consistent over the full temperature range. As such, the device provides a flexible solution for a wide range of data acquisition applications. It is particularly well-suited for motor controllers, audio mixing and equalization, noise suppression, and robotics. Furthermore, its low power consumption, high reliability and integrated design make it a cost-effective choice for reliable data acquisition and control.

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