LTC2633AHTS8-HI12#TRMPBF

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Data Acquisition - Digital to Analog Converters (DAC)

The LTC2633AHTS8-HI12#TRMPBF is a low power, 8- and 12-bit voltage output digital-to-analog converter (DAC) with an integrated I2C-compatible serial interface. Operating from a single 2.7V to 5.5V supply, the device features a full-scale output of 0V to VREF and a Rail-to-Rail output range. The LTC2633AHTS8-HI12#TRMPBF is ideal for applications that require precise control and precision analog performance, such as engineering and test systems, Active Filters, loop controllers and motor control.

Application Field

Designers can take advantage of the low-noise performance, wide output range and multiple power-saving features of the LTC2633AHTS8-HI12#TRMPBF for a wide range of applications including automotive control systems, portable medical equipment, industrial automation, and power management. The device\'s low power and low noise make it ideal for extending the battery life and accuracy of handheld devices.

The device includes several power saving features that simplify system power management. With its low quiescent current of 40µA, the device consumes only a fraction of the power of an equivalent 10-bit DAC. Additionally, the device\'s wide operating range from 2.7V to 5.5V ensures compatibility with a variety of power supply standards.

Operating Principle

The device contains an expanded-scale, 8- or 12-bit digital-to-analog converter (DAC) and an I2C-compatible serial interface that allows communication with a host processor or controller. The device operates over the full I2C bus speed range of up to 1MHz, with no extra power required. The expanded-scale DAC provides excellent temperature and gain accuracy, improving the accuracy of constructed signals over the last few bits. The device has an integrated reference, allowing the user to set the full-scale voltage range with one external resistor.

The LTC2633AHTS8-HI12#TRMPBF has a selectable power-on reset (POR) feature that sets all channels to zero on power-up. An internal soft-start circuit is also included to limit inrush current during power-up. The device supports three different write modes, allowing data to be written to either one or two DAC channels, or all channels at once. When the write mode is selected, the desired setting is automatically written to the addressed DAC channel. Additionally, an auto-addressing feature is included to ensure that all data is written to the desired DAC channel.

The device also includes two high performance logic pins for output enable and shutdown control. The Output Enable pin allows individual DAC outputs to be enabled and disabled with a single pin, while the Shutdown pin allows all DACs to be disabled. Additionally, the device supports three automatic power-down modes that allow the DAC to enter a low-power standby state when certain serial commands are issued.

Conclusion

In conclusion, the LTC2633AHTS8-HI12#TRMPBF is a high performance 8- and 12-bit voltage output digital to analog converter with an integrated I2C-compatible serial interface. With its low power consumption and wide operating range, the device is a great choice for applications that require precise control and precision analog performance. The device’s features, such as the selectable power-on reset and Power-down modes, make it an ideal solution for applications that require power savings and reliability.

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