MAX5443BEUA

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Data Acquisition - Digital to Analog Converters (DAC)

The Max5443BEUA 8-bit digital-to-analog converter (DAC) from Maxim Integrated provides a unipolar voltage output with a reference voltage of 2.5V. Max5443BEUA provides a wide range of output voltages from a programmable reference voltage and is ideal for voltage scaling applications. The high performance DAC includes a 19MHz serial peripheral interface (SPI), with maximum throughput of 621kbps (kilo bits per second) and is compatible with SPI, QSPI, Microwire and other popular serial buses. It is available in 16-pin SOIC, SOT and TSSOP packages.

The Max5443BEUA is an 8-bit DAC with an extended operating temperature range of -40°C to 125°C. It offers excellent linearity and accuracy at a wide range of temperatures with a specification of ±0.9 LSB DNL (differential nonlinearity) and ±1 LSB INL (integral nonlinearity). In addition, the device provides a low absolute gain error of ±3 LSB (max) and a low absolute offset error of ±3 LSB (max). It also features a low power operation of 4.8 mW (<72 nA) and high immunity to crosstalk and radiation.

The Max5443BEUA features an on-chip reference with a full-scale output level of 2.5V (typical). The internal reference enables the device to achieve high resolution and low power consumption. The device is designed for low cost and low power applications, offering an adjustable analog output that can be connected directly to most digital components without adding additional components. The output is adjustable within a small range of 0.05V to 2.95V, making it ideal for voltage scaling applications.

The Max5443BEUA is suitable for a variety of applications such as low-frequency industrial control, laboratory instrumentation and process control. Moreover, the DAC can be used to convert digital signals into voltage (analog) signals for motor control, amplitude modulation and audio amplification. The high linearity performance and low power consumption of this device makes it an ideal choice for battery-operated equipment.

The working principle of the Max5443BEUA involves converting either a serial bit-stream or parallel binary input into a unipolar voltage with internal reference voltage. The input can be either 8-bit parallel or 4- to 16-bit serial data, while the output can be programmed and adjusted by the device’s control bits. The serial data is clocked into the device at the SCK input, with each clock pulse advancing the data bits one bit at a time. The device stores the data in an internal shift register up to the maximum data length specified. When the data is complete, the Latch input must be strobed.

The Max5443BEUA also features a single control bit that allows the user to enable or disable the system clock in order to save power, and to reset the internal shift register to the default value (zero). The control bit also enables the setting of various modes such as power-down, power-up or power-save, and the selection of reference source.

The Max5443BEUA is a high performance 8-bit DAC that provides a wide range of output voltages. It is suitable for a variety of applications, including process control, audio amplification, motor control and voltage scaling. The device offers low power operation and excellent linearity and accuracy over a wide temperature range. The device also features a single control bit that allows users to enable or disable the system clock, and to reset the internal shift register to the default value (zero). The control bit also allows for the selection of various reference sources.

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