MAX1238LEEE+

Number of A/D Converters:	1
Base Part Number:	MAX1238
Supplier Device Package:	16-QSOP
Package / Case:	16-SSOP (0.154", 3.90mm Width)
Operating Temperature:	-40°C ~ 85°C
Features:	--
Voltage - Supply, Digital:	5V
Voltage - Supply, Analog:	5V
Reference Type:	External, Internal
Architecture:	SAR
Series:	--
Ratio - S/H:ADC:	1:1
Configuration:	S/H-ADC
Data Interface:	I²C
Input Type:	Differential, Single Ended
Number of Inputs:	6, 12
Sampling Rate (Per Second):	94.4k
Number of Bits:	12
Part Status:	Obsolete
Packaging:	Tube

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Introduction

MAX1238LEEE+ is a high accuracy, low power, and low input noise analog to digital converter (ADC) designed for data acquisition applications. It provides 12-bit resolution and features separate voltage references for analog inputs and digital outputs, as well as a multiplexed voltage reference for additional signal isolation. This giving it superior performance in both accuracy and noise measures, when compared to its predecessors in the range.

Features

MAX1238LEEE+ features include:

• 12-bit resolution
• Low power consumption
• High accuracy
• Low input noise
• Multiplexed voltage reference
• Separate voltage references for analog inputs and digital outputs
• Software-adjustable digital filter

Application Fields

MAX1238LEEE+ is ideal for high precision data acquisition applications, such as industrial test and measurement systems or medical imaging systems. It can be used in a variety of applications, from signal acquisition and motor control, to instrumentation and automation.

Working Principle

The MAX1238LEEE+ ADC operates by converting an analog input signal into a digital signal. This is done by sampling the analog input signal, converting it to a digital signal, and then using a digital filter to reduce the noise in the signal. The digital signal is then output as a 12-bit value.The ADC contains two different types of circuits: the analog front end, which performs signal conditioning and analog-to-digital conversion; and the digital filter, which reduces noise and other signal artifacts. The analog front end works by sampling the analog signal, converting it to a voltage, and then converting that voltage to a 12-bit digital signal. The voltage reference is used to provide an accurate reference point for the ADC\'s scaling range.The digital filter works by averaging the sampled analog signal to reduce noise and other signal artifacts. This is done by setting a digital filter roll-off rate and a digital filter sample size. The digital filter can be adjusted to maintain the desired signal-to-noise ratio (SNR).

Conclusion

The MAX1238LEEE+ ADC provides high accuracy, low power consumption, and low input noise for data acquisition applications. Its 12-bit resolution, multiplexed voltage reference, and separate voltage references for analog inputs and digital outputs make it an ideal choice for high precision applications, such as industrial test and measurement systems or medical imaging systems. In addition, its software-adjustable digital filter allows for adjustments to maintain the desired signal-to-noise ratio (SNR).

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