MX7520UQ/883B

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Data Acquisition - Digital to Analog Converters (DACs) are devices that convert digital signals into analog signals. The MX7520UQ/883B is a model of DAC that is widely used in various applications. This article will discuss the application field and working principle of the MX7520UQ/883B.

Application Field of MX7520UQ/883B

The MX7520UQ/883B is a digitally controlled 8-bit positive current output DAC converter. It has a wide operating temperature range of -45°C ~ +85°C, and can operate with a supply voltage range of 3V ~ 16V. This model is especially suitable for applications requiring low power and current consumption, wide input voltage range, and high precision, such as audio and video signal processing, digital programmable calibration equipment, smart meters and mihome control, automotive ECUs and control, health care equipment, instrumentation and any application that requires a precision DAC for digital control.

The MX7520UQ/883B has a single output channel, a 9 bit DAC resolution, an output range of 0 mA to 250 mA, and a full scale settling time of 10 μs (typical). It also has a very low temperature coefficient of 5ppm/°C (typical), and can operate with a maximum output current of 250 mA. This model also comes with an on-chip voltage reference, which ensures high accuracy and low power consumption.

Working Principle of MX7520UQ/883B

The working principle of the MX7520UQ/883B relies on the use of an on-chip voltage reference and a precision resistor divider. The resistor divider is connected to the positive output, to the reference voltage, and to ground; the voltage reference is connected to the negative output, to the reference voltage, and to ground. The voltage reference provides the reference voltage. The voltage at the end of the resistor divider is proportional to the analog output of the DAC.

The output of the DAC is determined by the binary input data which is received in serial format. The digital code is first converted to an analog value. Then, the analog output is fed to a current mirror circuit. This current mirror circuit consists of two transistors connected in parallel, one with a current source and the other with an adjustable current source. The current mirror produces the output current of the DAC, which is then fed to the positive terminal of the resistor divider. The current through the resistor divider is proportional to the current from the current mirror, and the voltage at the end of the resistor divider is proportional to the analog output of the DAC.

The MX7520UQ/883B is also equipped with an auto-zero calibration circuit which is used to ensure that the offset voltage is reduced to the minimum possible. This provides increased accuracy and improved linearity of the output signal. The auto-zero calibration is self-calibrating and requires no additional external components.

The MX7520UQ/883B is a high-precision, low-power, and low-noise device, which makes it ideal for applications requiring a high-precision DAC. It is also a cost-effective solution and can be used in a wide range of applications.

The specific data is subject to PDF, and the above content is for reference