ICL7135CQI+ - Encyclopedia Entry

Product Overview

Category

The ICL7135CQI+ belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used in various electronic applications, particularly in precision analog-to-digital converters (ADCs) and digital panel meters.

Characteristics

• High accuracy: The ICL7135CQI+ offers exceptional accuracy in converting analog signals to digital values.
• Low power consumption: This IC is designed to operate with minimal power requirements, making it suitable for battery-powered devices.
• Versatile: It can be used in a wide range of applications due to its flexible design and compatibility with different systems.

Package

The ICL7135CQI+ is available in a compact quad flat package (QFP), which facilitates easy integration into electronic circuits.

Essence

The essence of the ICL7135CQI+ lies in its ability to accurately convert analog signals into digital data, enabling precise measurements and control in various electronic systems.

Packaging/Quantity

This IC is typically packaged in reels or tubes, with each reel or tube containing a specific quantity of ICL7135CQI+ ICs. The exact quantity may vary depending on the manufacturer's specifications.

Specifications

• Resolution: 3.5 digits
• Supply voltage: 4.5V to 6V
• Conversion time: 100ms
• Operating temperature range: -40°C to +85°C
• Input voltage range: ±200mV
• Reference voltage: Internal or external selectable

Detailed Pin Configuration

The ICL7135CQI+ features a total of 44 pins, each serving a specific function. The pin configuration is as follows:

1. VREF-
2. VREF+
3. INTEGRATE
4. REFLO
5. REFHI
6. VREFOUT
7. AGND
8. DGND
9. AIN1
10. AIN2
11. AIN3
12. AIN4
13. AIN5
14. AIN6
15. AIN7
16. AIN8
17. AIN9
18. AIN10
19. AIN11
20. AIN12
21. AIN13
22. AIN14
23. AIN15
24. AIN16
25. AIN17
26. AIN18
27. AIN19
28. AIN20
29. AIN21
30. AIN22
31. AIN23
32. AIN24
33. AIN25
34. AIN26
35. AIN27
36. AIN28
37. AIN29
38. AIN30
39. AIN31
40. AIN32
41. AIN33
42. AIN34
43. AIN35
44. AIN36

Functional Features

• High-resolution ADC: The ICL7135CQI+ incorporates a high-resolution analog-to-digital converter, enabling accurate measurement of analog signals.
• Multiplexed inputs: It supports multiple input channels, allowing for the simultaneous conversion of different analog signals.
• Internal reference voltage: The IC provides an internal reference voltage, eliminating the need for an external reference source in certain applications.

Advantages and Disadvantages

Advantages

• High accuracy and resolution
• Low power consumption
• Versatile application possibilities
• Compact package size for easy integration

Disadvantages

• Limited input voltage range
• Requires additional external components for some applications

Working Principles

The ICL7135CQI+ operates based on the successive approximation method. It samples the analog input voltage, performs a series of comparisons, and generates a digital output representing the converted value. The internal circuitry ensures high accuracy and stability throughout the conversion process.

Detailed Application Field Plans

The ICL7135CQI+ finds extensive use in various applications, including: 1. Digital panel meters 2. Data acquisition systems 3. Industrial automation 4. Medical equipment 5. Test and measurement instruments

Detailed and Complete Alternative Models

• AD7791 by Analog Devices
• MAX11646 by Maxim Integrated
• MCP3424 by Microchip Technology
• LTC2400 by Linear Technology
• ADS1115 by Texas Instruments

These alternative models offer similar functionality to the ICL7135CQI+ and can be considered as alternatives depending on specific application requirements.

In conclusion, the ICL7135CQI+ is a highly accurate and versatile integrated circuit used in precision analog-to-digital conversion applications. Its compact package, low power consumption, and multiplexed inputs make it suitable for a wide range of