Overview
The ICL7135CNG4, produced by Texas Instruments, is a high-precision 4 1/2-digit analog-to-digital converter (ADC) that utilizes dual-slope integrating conversion. This monolithic device is designed to offer high accuracy and reliability, making it suitable for various precision measurement applications. It features auto-zero and auto-polarity capabilities, high impedance differential inputs, and nearly ideal differential linearity. The ICL7135CNG4 is also equipped with multiplexed binary-coded-decimal (BCD) outputs and digit drivers, facilitating easy integration with external display drivers and microprocessors.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 4.5 Digit | |
| Number of Channels | 1 | |
| Operating Temperature | 0°C to 70°C | |
| Voltage Supply | 4V to 6V | |
| Input Bias Current | 10 pA (max) | |
| Auto-Zero Accuracy | Better than 10 µV | |
| Zero Drift | 0.5 µV/°C | |
| Rollover Error | Less than 1 count | |
| Package/Case | 28-DIP (0.600", 15.24mm) | |
| Mounting Type | Through Hole |
Key Features
- High precision dual-slope integrating analog-to-digital conversion with ±1 in 20,000 count accuracy.
- Auto-zero and auto-polarity capabilities for enhanced accuracy.
- High impedance differential inputs and nearly ideal differential linearity.
- Multiplexed BCD outputs and digit drivers for easy interface with external display drivers and microprocessors.
- Control signals include BUSY, STROBE, RUN/HOLD, OVER RANGE, and UNDER RANGE for microprocessor-based systems.
- True ratiometric operation and low input current (less than 10 pA).
Applications
The ICL7135CNG4 is ideal for use in microprocessor-based data acquisition and control systems. It is particularly suited for precision digital voltmeters (DVMs), digital panel meters (DPMs), and other applications requiring high accuracy and reliability. The device can also be used in remote data acquisition systems with data transfer through universal asynchronous receiver transmitters (UARTs).
Q & A
- What is the resolution of the ICL7135CNG4? The resolution of the ICL7135CNG4 is 4.5 digits.
- What is the operating temperature range of the ICL7135CNG4? The operating temperature range is from 0°C to 70°C.
- What is the input bias current of the ICL7135CNG4? The input bias current is less than 10 pA.
- What are the key control signals provided by the ICL7135CNG4? The key control signals include BUSY, STROBE, RUN/HOLD, OVER RANGE, and UNDER RANGE.
- How does the ICL7135CNG4 handle auto-zero and auto-polarity? The device features auto-zero and auto-polarity capabilities, with auto-zero accuracy better than 10 µV and zero drift of 0.5 µV/°C.
- What type of outputs does the ICL7135CNG4 provide? The device provides multiplexed BCD outputs and digit drivers.
- Is the ICL7135CNG4 suitable for microprocessor-based systems? Yes, it is designed to interface easily with microprocessors and UARTs.
- What is the typical rollover error of the ICL7135CNG4? The rollover error is less than 1 count.
- What package type is the ICL7135CNG4 available in? The device is available in a 28-DIP (0.600", 15.24mm) package.
- Is the ICL7135CNG4 RoHS compliant? Yes, the ICL7135CNG4 is RoHS compliant.
