MCP4912-E/P

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Data Acquisition - Digital to Analog Converters (DAC) have been used for a variety of applications from providing the control signals for motors, amplifiers and other control systems to providing high-resolution analog output for test and measurement systems. The MCP4912-E/P digital-to-analog converter (DAC) is a highly integrated device with features such as a 12-bit serial digital interface, voltage output range, rail-to-rail output, high accuracy and low power consumption.The MCP4912-E/P is a single channel device that operates from either a single 2.7V to 5.5V supply or dual supplies of ±2.7V to ±5.5V. It has two power modes, High Power Mode (3 mA) and Low Power Mode (300 uA). The serial digital data is a 12-bit word, with 8-bits of data, a 4-bits address and a clock input. The output range is from 0V to VS (supply voltage), with a guaranteed 12-bit accuracy.The MCP4912-E/P’s high-level linearity, amplitude resolution and low distortion provide improved overall system noise performance compared to fast PC-based D/A solutions. The device is available in 8-lead PDIP, 8-lead SOIC and 8-lead TSSOP packages and is ideal for a wide range of applications. These include driving audio circuits, such as those used in computer speakers or headphones, as well as driving DC motors, controlling analog devices and providing a digital input to analog transducers.The MCP4912-E/P operates at a maximum analog output current of ±500 μA and features a low-power shutdown mode with minimum current draw of 50 nA. It offers a hardware reset function and more than 50 dB of signal-to-noise ratio. The device also features high settling time for fast response, with a maximum power supply rejection of 65 dB. The resolution of the output is also programmable from 10 to 12 bits.The MCP4912-E/P is a versatile device that can be used in a wide range of applications. To achieve maximum accuracy, the device should be used with a 16-bit or better digital input and ground the non-selected address pins. Channel selection is made through the address pin and an enable signal is provided. An active low device select input can be used to ground the non-selected channels and an active-high enable is provided to enable and disable the DAC output.The MCP4912-E/P utilizes two power modes which allow it to achieve both low power consumption and high performance. In Low Power mode, the device can operate at 3 mA and in High Power mode, it can operate at 300 μA. The device’s power mode and output range are selected through several pins. The output range can be either 0 to 10 volts or 0 to 5 volts and the power mode can be selected through the HPM/LPM pin.In conclusion, the MCP4912-E/P is an ideal choice for digital-to-analog conversion applications where low power consumption and high accuracy are required. Its wide range of features make it suitable for many applications, such as driving audio circuits, controlling analog devices, providing a digital input to analog transducers and driving DC motors. With its high-level linearity and low distortion, it provides improved overall system noise performance compared to faster and more expensive PC-based solutions.

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