MAX5742EUB+T

Reference Type:	External
Base Part Number:	MAX5742
Supplier Device Package:	10-uMAX
Package / Case:	10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
Operating Temperature:	-40°C ~ 85°C
Architecture:	String DAC
INL/DNL (LSB):	±2, ±1 (Max)
Voltage - Supply, Digital:	2.7 V ~ 5.5 V
Voltage - Supply, Analog:	2.7 V ~ 5.5 V
Series:	--
Data Interface:	SPI, DSP
Differential Output:	No
Output Type:	Voltage - Buffered
Settling Time:	10µs
Number of D/A Converters:	4
Number of Bits:	12
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

The MAX5742EUB+T is a Digital to Analog Converter (DAC) used mainly in data acquisition applications, designed and developed by Maxim Integrated, a Silicon Valley based company founded in 1988. It has a resolution of up to 12 bits, high accuracy, wide supply voltage, and a fast settling, which makes it ideal for high-precision applications that require precise acquisition, measurement and control.

Features

The device features 100MHz maximum conversion rate, 12-bit resolution and 10.5-bit linearity. It also features integrated reference terminals, with a maximum reference input voltage of 4.0 V and an on-chip voltage doubler with integrated clamp diodes to handle negative supplies. The MAX5742EUB+T is a low power device (<1 mW) and is optimized to run in a single-supply configuration making it very suitable for portable and battery powered applications. The DAC also includes an output buffer with 4000µV RMS noise and a high-resistance signal path for both low-power and high-speed applications. The signal path also reduces signal degradation for auto-zeroing of the output and improved signal quality.

Applications

The MAX5742EUB+T can be used in various data acquisition applications, including thermocouple and RTD measurements, data logger calibrations, weighing applications, closed-loop motor control, and many other industrial control applications such as temperature, pressure, flow and level measurements.The accuracy and fast settling of the device makes it an ideal choice for medical and clinical applications such as pressure and respiratory monitoring and imaging. Additionally, the low power consumption makes it a suitable choice for use in portable medical devices.The combination of the features makes the device well suited for use in automotive applications such as automotive ECU development, fuel injection system control, and crash detection.

Working Principle

The MAX5742EUB+T is a 12-bit DAC with a combination of digital and analog circuits. The device converts digital input into analog output, with a 12-bit resolution, up to 16V full-scale range and up to ±5V input range. It is designed to minimize power consumption and minimize noise.It has an on-chip voltage reference that can produce a constant analog voltage from a range of operating supply voltages. Additionally, it has an output buffer that provides a low-noise output for driving high-impedance loads. The output of the DAC is buffered using a low-pass filter and/or amplifier. This improves the analog signal quality and reduces noise.The device also has a state machine to control the different DAC operations, such as calibration, control and conversion.

Conclusion

The MAX5742EUB+T is a high-precision Digital to Analog Converter (DAC) designed for data acquisition applications. It features up to 100MHz maximum conversion rate, 12-bit resolution, 10.5-bit linearity and an integrated reference terminals. These features make this device suitable for a broad range of applications, including thermocouple and RTD measurements, data logger calibrations, weighing applications, closed-loop motor control, medical and healthcare applications, and automotive ECU development.

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