AD5821BCBZ-REEL7 Integrated Circuits (ICs)

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The AD5821BCBZ-REEL7 is a monolithic current output Digital-to-Analog Converter (DAC), commonly used in the Data Acquisition field. It has a wide range of applications, from industrial automation to medical instrumentation, for scenarios that require a fast and accurate digital to analog conversion. This high-performance precision integrated circuit was designed to generate a controllable analog current or voltage output based on digital input.

Application Field

The AD5821BCBZ-REEL7 offers a highly-accurate digital to analog conversion, with excellent temperature coefficient, offset voltage and voltage, and linearity. It is designed to offer engineers the flexibility they need to create a variety of system solutions. The device is ideal for industrial automation applications such as motor controls, power supply and appliance control, heating, ventilation and air conditioning (HVAC) systems, as well as medical instrumentation solutions such as patient monitors and laboratory instrumentation. It is also used in data acquisition and process control systems, as well as in test and measurement and automotive applications.

Working Principle

The AD5821BCBZ-REEL7 is a monolithic Digital-to-Analog Converter (DAC). It features a 10-bit Digital Input Port that stores the digital code in a current-sink configuration that is output as a controlled analog current or voltage. The analog current or voltage output is generated as a function of the digital code stored in the device’s 2-byte input register. The DAC updates its output on the rising edges of the clock signal (CLK), or instantly, if the UPDATE input is pulled high. The device can be reset to the digital code “all zeroes” with the CE pin. The device is designed to operate from 3.3V or 5V supplies, and the analog output is adjustable, up to half the supply voltage.

The AD8521BCBZ-REEL7 offers an excellent end-to-end accuracy of ±0.6% (linearity + offset) typical, and as low as ±0.2% (linearity + offset), and a linearity error of ≤ 0.075% maximum over the specified working range. It supports a wide voltage range, from 5V to 15V and a wide current range, from 0.8A to 20A for both unipolar and bipolar configurations. The device can also be used in an I2C configuration, in which case the serial interface can be used to program the DAC with an 8-bit data word. The device also features an EEPROM, which makes it easy to program the device with pre-defined configurations.

The AD5821BCBZ-REEL7 offers excellent linearity and fast settling time, and low power consumption. It is designed to operate with a single 3.3V or 5V supply and consumes 50uA of current at a 3.3V source and 100uA at a 5V source. The device has an input register to store the digital code, a clock input to synchronize the digital input with the analog output, and an update input to instantly update the analog output with the stored digital code. The device supports a wide range of clock frequencies, from 1.5MHz to 20MHz, and offers up to 5mV of settling time at a 5MHz clock frequency.

Conclusion

The AD5821BCBZ-REEL7 is a high-performance monolithic Digital-to-Analog Converter (DAC) that offers excellent linearity and settling time performances. It is designed to offer engineers the flexibility they need to create a variety of system solutions for industrial automation, medical instrumentation, data acquisition and process control. It supports a wide voltage range, from 5V to 15V, and a wide current range, from 0.8A to 20A, and low power consumption of 50uA at a 3.3V source and 100uA at a 5V source. It also features an EEPROM, making it easy to program the device with pre-defined configurations.

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