MAX1112EPP+

Number of A/D Converters:	1
Base Part Number:	MAX1112
Supplier Device Package:	20-PDIP
Package / Case:	20-DIP (0.300", 7.62mm)
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:	MUX-S/H-ADC
Data Interface:	SPI
Input Type:	Differential, Single Ended
Number of Inputs:	4, 8
Sampling Rate (Per Second):	50k
Number of Bits:	8
Part Status:	Obsolete
Packaging:	Tube

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Data Acquisition - Analog to Digital Converters (ADC)

An analog-to-digital converter (ADC) is a device that converts a continuous physical quantity, such as voltage or current, into a digital number that represents the magnitude of the physical quantity. The MAX1112EPP+ is a CMOS 8-bit successive approximation ADC. The MAX1112EPP+ offers an ultra low power platform to achieve a low system cost and a small form factor. The MAX1112EPP+ is typically used in applications such as consumer and industrial applications that involve data acquisition, computer peripherals, and electronic instruments and measurement systems. The MAX1112EPP+ is also suitable for medical equipment, industrial controllers, consumer equipment and environmental monitoring systems.

Features and Specifications

The MAX1112EPP+ is an 8-bit successive approximation ADC which offers a host of features, including an ultra-low power platform with a low system cost and small form factor. The device operates with a single 3V supply and is capable of interfacing with analog signal sources ranging from 0V to 2.5V. Its high-speed 5µs conversion time, low differential linearity error of 1LSB, and low temperature coefficient of -3mV/˚C make it a versatile choice for applications requiring high precision conversions. The device also features a high signal-to-noise ratio (SNR) of 94dB and low power consumption of 750µA.

Applications

The device\'s wide range of features makes it an ideal solution for data acquisition, computer peripherals, and electronic instrumentation and measurement systems. Its low power consumption and small form factor make it an ideal choice for medical equipment and environmental monitoring systems. Industrial controllers, consumer equipment and virtual instrumentation applications in automotive and aerospace also benefit from the features of the MAX1112EPP+.

Working Principle

The MAX1112EPP+ operates on successive approximation architecture. The all-digit architecture allows for control of the analog input voltage and conversion speed by adjusting the internal clock frequency. The device consists of a successive approximation register (SAR), a comparator block, a digital filter, a reference generator, and an 8-bit shift register. The successive approximation register (SAR) converts the analog input voltage into a digital number. The comparator block compares the output of the SAR with the analog input voltage and then adjusts the output of the SAR accordingly. The digital filter smoothes the output of the SAR and ensures accurate results. The reference generator provides the reference voltage for the comparator block, and then the 8-bit shift register stores the digital output. The MAX1112EPP+ uses a sample-and-hold circuit in order to isolate the analog input from the rest of the circuit, which reduces distortion from the noise and allows for faster sampling rates. The device can be configured to operate either in single-ended or fully differential mode.

Conclusion

The MAX1112EPP+ is an ideal solution for data acquisition, computer peripherals, and electronic instrumentation and measurement systems. The device\'s ultra low power platform and small form factor make it a great choice for medical equipment, industrial controllers, consumer equipment and environmental monitoring systems. Its features include an ultra-low power platform, single 3V supply, 5µs conversion time, low differential linearity error of 1LSB, low temperature coefficient of -3mV/˚C, high SNR of 94dB, and low power consumption of 750µA. The MAX1112EPP+ uses successive approximation architecture with a sample-and-hold circuit, which allows for fast and accurate results.

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