ICL7109EPL+

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The ICL7109EPL+ is an analog to digital converter (ADC) specifically designed for industrial applications. It is an Analog-to-Digital converter IC with a CMOS output and sampling rate of up to 250k samples/sec. It features Serial Interfacing to microprocessor control systems, digital LED\'s and LCD controller chips, and custom ASIC designs.The ICL7109EPL+ is ideal for precision data acquisition applications where low power consumption, high resolution, and high speed is essential.

Overview

The ICL7109EPL+ is a precision Analog-to-Digital Converter (ADC) with serial interfacing for microprocessor control systems. The device is designed for use in precision data acquisition systems, where low power consumption, accuracy and a high sampling rate is essential. It has 8 CMOS output lines, an internal clock circuit with a sampling rate of up to 250k samples/sec, and can be used for either single-ended or differential inputs. The device has an on-board temperature sensor for precision temperature compensated conversion, and an on-board 2bit Digital to Analog Converter (DAC) for offset and range setting without additional external components.

Features

• 8-bit resolution,CMOS-compatible outputs
• Serial interface to microprocessor control systems
• Internal clock circuitry with sampling rate up to 250k samples/sec
• Differential or Single-Ended input configuration
• On-board temperature sensor for precision temperature compensated conversion
• Integrated 2-bit Digital to Analog Convertor (DAC) for offset and range setting without additional external components

Applications

The ICL7109EPL+ is ideally suited for precision applications requiring low power consumption, high resolution, and high speed. The device can be used in a wide range of applications, including industrial process control, medical instruments, automotive measurement systems, and other data acquisition systems. The device is particularly useful in measuring temperatures, pressure, flow, and other physical parameters. Furthermore, its integrated features make it particularly well-suited for use in embedded systems, where it can be interfaced to existing software to enable rapid system integration.

Working Principle

The ICL7109EPL+ operates by measuring the input voltage across an internal reference voltage source. This is performed using an internal comparator, which compares the input voltage to the reference voltage. The output of the comparator is then passed to an 8-bit shift register for storage, and shifted in serially bit by bit. The output of the shift register is then transmitted to the serial output lines, providing the digital representation of the input voltage. The input voltage is then converted to a digital signal one bit at a time, with the most significant bit being transmitted first.

The ICL7109EPL+ also features an on-board temperature sensor that is used to provide more accurate temperature compensation of the reference voltage and the analog-to-digital conversion. The device also has an integrated 2-bit Digital to Analog Converter (DAC) for offset and range setting without the need for additional external components. The device is powered by a single 5V supply and consumes just 9.3mW when operated with a 250k samples/second clock. The ICL7109EPL+ is available in 8-, 10-, and 12-bit versions.

Conclusion

The ICL7109EPL+ is a precision Analog-to-Digital Converter (ADC) designed for industrial applications. It has 8 CMOS output lines, internal clock circuitry with a sampling rate up to 250k samples/sec, and can be used for either single-ended or differential inputs. The device is ideal for precision data acquisition applications where low power consumption, high resolution, and high speed is essential. Its on-board temperature sensor provides precise temperature compensation and the integrated 2-bit Digital to Analog Converter (DAC) allows for offset and range setting without requiring additional external components. The ICL7109EPL+ is available in 8-, 10-, and 12-bit versions and can be used in a wide range of applications.

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