DAC5681IRGCT

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The DAC5681IRGCT is an integrated, three-channel Digital to Analog Converter (DAC) designed to provide reliable and accurate analog output signals in applications such as audio, digital television, and automotive systems where superior performance is paramount. The device integrates three independent 16-bit, voltage-output DACs which feature a ±2.5V full-scale output range, cushion voltage control, and settable linear and non-linear gain control for each output.

The DAC5681IRGCT utilizes a low-current, low-noise CMOS architecture for high performance and extended temperature range operation. It also includes integral temperature sensor and level shifter, enabling the DAC5681IRGCT to be safely driven from 3.3V or 5V logic. On-chip latched output capabilities provide glitch-free output voltage transitions and minimized power consumption. Furthermore, the DAC5681IRGCT offers adjustable output settling time and slew rate control, which can provide a means of optimizing system performance.

The DAC5681IRGCT has many advantages to its name. With a maximum differential non- linearity (DNL) of 0.25 LSBs, it outperforms any other three-channel DAC in its range. Additionally, its low power consumption ensures the DAC5681IRGCT can be used in a battery-operated system without sacrificing performance. Furthermore, the DAC5681IRGCT can be quickly configured to provide different voltage ranges and output levels, making it perfect for applications with highly dynamic requirements.

In terms of digital input requirements, the DAC5681IRGCT supports a wide range of digital control signals including three data- inputs, Dd0 to Dd2, along with voltage table select and digital interface control. The device also has an integrated level shifter and temperature sensor, making it a suitable choice for use in a variety of operating environments and design constraints.

The DAC5681IRGCT is ideal for a variety of applications where superior performance, wide dynamic range, and integrity of the analog signals are essential. These applications include medical systems, automotive audio and instrumentation, consumer products as well as consumer-level audio and video systems.

At a high level, the working principle of a DAC is quite simple. A DAC receives digital input signals, which are then converted into analog output signals using a circuit known as the Digital-to-Analog Converter (DAC). This process consists of a conversion algorithm that takes the digital inputs and rearranges the bits of information contained therein in order to produce an analog voltage that corresponds to the digital input. This output voltage is then sent to the output port of the DAC circuit, where it can be used by external circuitry.

In terms of the DAC5681IRGCT DAC specifically, the conversion process is achieved through the implementation of a voltage-mode Encoder-Decoder or encoder-decoder block. This logic block translates the digital inputs, which are composed of a 16-bit parallel word, into a 3-bit ternary weighted code. This code is then converted into an analog voltage via a series of steering switches and resistive dividers.

In addition to the voltage mode conversion process, the DAC5681IRGCT also features a cushion voltage control logic and gain control logic. The cushion voltage function enables a user to increase or decrease the output voltage of the DAC. This enables the user to compensate for offsets when the DAC is used in closed loop applications. The gain control feature also includes linear and non-linear gain options, enabling the user to adjust the analog output voltage of the DAC in order to accurately match the system requirements.

The DAC5681IRGCT provides a high performance, three-channel voltage output DAC designed to provide reliable and accurate analog signals in a wide range of applications. Its low power consumption, adjustable output settling time and slew rate control, along with other features, make it an ideal choice for a wide array of applications. Additionally, its integrated temperature sensor, level shifter, and adjustable gain control logic make it well-suited for use in a wide range of operating environments and design parameters.

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