ICL7135CPI-2

Product Overview

Category

ICL7135CPI-2 belongs to the category of integrated circuits (ICs).

Use

This integrated circuit is commonly used in various electronic applications for precision analog-to-digital conversion.

Characteristics

• High accuracy: The ICL7135CPI-2 offers exceptional accuracy in converting analog signals to digital values.
• Low power consumption: It operates efficiently with low power requirements.
• Versatility: This IC can be used in a wide range of applications due to its flexible design.
• Compact package: The ICL7135CPI-2 is available in a compact package, making it suitable for space-constrained designs.

Package and Quantity

The ICL7135CPI-2 is typically packaged in a 40-pin plastic dual in-line package (PDIP). It is commonly available in reels or tubes, with quantities varying based on the supplier's packaging standards.

Specifications

The key specifications of the ICL7135CPI-2 are as follows:

• Resolution: 3.5 digits
• Conversion Rate: Up to 13 samples per second
• Reference Voltage Range: ±10V
• Operating Voltage Range: ±4V to ±18V
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The pin configuration of the ICL7135CPI-2 is as follows:

┌───┬───┐ │1 └─ 40│ │2 39│ │3 38│ │4 37│ │5 36│ │6 35│ │7 34│ │8 33│ │9 32│ │10 31│ │11 30│ │12 29│ │13 28│ │14 27│ │15 26│ │16 25│ │17 24│ │18 23│ │19 22│ │20 21│ └───┴───┘

Functional Features

The ICL7135CPI-2 offers the following functional features:

• Analog-to-digital conversion: It provides accurate conversion of analog signals to digital values.
• Multiplexed inputs: The IC supports multiplexing of multiple input channels, allowing for versatile signal acquisition.
• Internal reference voltage: It includes an internal reference voltage source for precise conversions.
• On-chip clock oscillator: The ICL7135CPI-2 incorporates an on-chip clock oscillator, eliminating the need for an external clock source.

Advantages and Disadvantages

Advantages

• High accuracy ensures reliable and precise measurements.
• Low power consumption makes it suitable for battery-powered applications.
• Versatility allows for use in various electronic systems.
• Compact package enables integration into space-constrained designs.

Disadvantages

• Limited resolution compared to higher-end ADCs.
• May require additional external components for specific applications.

Working Principles

The ICL7135CPI-2 operates based on the successive approximation method. It utilizes an internal reference voltage to compare the input analog signal and generate a corresponding digital output. The conversion process is controlled by an on-chip clock oscillator, which synchronizes the sampling and conversion operations.

Application Field Plans

The ICL7135CPI-2 finds extensive application in the following fields:

1. Digital multimeters (DMMs): It is commonly used in DMMs for accurate measurement of voltage, current, and resistance.
2. Data acquisition systems: The IC is employed in data acquisition systems to convert analog signals from various sensors into digital values.
3. Process control instrumentation: It plays a crucial role in process control systems, enabling precise monitoring and control of industrial processes.
4. Medical equipment: The ICL7135CPI-2 is utilized in medical devices for accurate measurement and monitoring of vital signs.

Alternative Models

Several alternative models with similar functionality to the ICL7135CPI-2 are available in the market. Some notable alternatives include:

1. MAX1161: This IC offers similar resolution and conversion rate, with additional features such as built-in temperature sensor.
2. LTC2400: It provides higher resolution and lower power consumption, suitable for applications requiring enhanced precision.
3. ADC0804: A cost-effective alternative with lower resolution but widely used in basic analog-to-digital conversion applications.

These alternative models can be considered based on specific application requirements and desired performance characteristics.

In conclusion, the ICL7135CPI-2 is a versatile