MAX5291BEUE+

Reference Type:	External
Base Part Number:	MAX5291
Supplier Device Package:	16-TSSOP
Package / Case:	16-TSSOP (0.173", 4.40mm Width)
Operating Temperature:	-40°C ~ 85°C
Architecture:	--
INL/DNL (LSB):	±2, ±1 (Max)
Voltage - Supply, Digital:	1.8 V ~ 5.25 V
Voltage - Supply, Analog:	2.7 V ~ 5.25 V
Series:	--
Data Interface:	SPI, DSP
Differential Output:	No
Output Type:	Voltage - Buffered
Settling Time:	6µs
Number of D/A Converters:	2
Number of Bits:	12
Part Status:	Active
Packaging:	Tube

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Introduction

Data Acquisition - Digital to Analog Converters (DAC) are important components for digital signal processing and control applications, as they are capable of providing an analog output signal from a digital input. The MAX5291BEUE+ is a Digital to Analog Converter from Maxim Integrated, which is a versatile, high-precision DAC with a wide range of application fields. This essay aims to provide an overview of the MAX5291BEUE+ and describe its working principle.

Application Fields

The MAX5291BEUE+ is a low-power, 8-/10-/12-/14-bit, Voltage and Current Output Digital to Analog Converter (DAC). It features wide supply ranges (2.7 V – 5.5 V) and a large data input register (8-bit, 10-bit, 12-bit or 14-bit) for programming the output voltage or current. It is a single-channel general-purpose DAC and can be used in a variety of applications, including audio combining and system calibration, industrial automation and control, fixed-point calibration and test systems, metering and instrumentation and more. Additionally, it has differential outputs, which makes it suitable for applications requiring low-noise performance, such as ADC (Analog to Digital Converter) drivers. Furthermore, the MAX5291BEUE+ includes SPI and I2C communication interface options and has a temperature coefficient of 0.01%/$\circ$C maximum, along with excellent linearity performance, and low distortion and noise.

Working Principle

The MAX5291BEUE+ works by taking a digital input of 8-bit, 10-bit, 12-bit or 14-bit and then transfer it into a corresponding voltage (up to 7.8 mV) or current (up to 6.4 $\mu$A); which is then output as an analog signal.When the DAC is first powered up, it will enter the RESET or Shutdown state, depending on the chosen configuration by the user. Once in this state, the output of the DAC will be disabled and its output registers cleared. To begin operation, the user should activate the “LDAC” pin to put the DAC in the active state. The digital input of the DAC is then utilized in a process which is known as digital-to-analog conversion. In this process, the digital input is first transferred into its equivalent decimal number, which is then used to calculate the corresponding voltage or current. The output register then takes the calculated voltage or current value and converts it into an analog signal, which is then output through the appropriate output pin (Vout or Iout).

Conclusion

The MAX5291BEUE+ is a high-precision DAC with a wide range of application fields. It features wide supply ranges, a large data input register and an excellent linearity performance. Furthermore, this DAC has differential outputs and includes SPI and I2C communication interface options. Finally, its temperature coefficient is 0.01%/$\circ$C maximum, along with low distortion and noise.

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