Overview
The ICL7109EQH is a monolithic 12-bit analog-to-digital converter (A/D converter) designed by Analog Devices Inc./Maxim Integrated. This device is optimized for easy interface with microprocessors and UARTs, making it suitable for various data acquisition and logging applications. It features high accuracy, low power consumption, and minimal input bias current, making it an attractive option for systems requiring precise and efficient analog-to-digital conversion.
Key Specifications
| Specification | Value |
|---|---|
| Resolution | 12 bits |
| Architecture | Dual Slope |
| Number of A/D Converters | 1 |
| Reference Type | External |
| Analog Supply Voltage | ±5V |
| Digital Supply Voltage | ±5V |
| Package Type | Plastic Leaded Chip Carrier (PLCC) |
| Package Size | 44-PLCC (16.59x16.59 mm) |
| Rollover Error | |
| Zero Reading Drift |
Key Features
- High accuracy with low rollover error and zero reading drift.
- Easy interface with microprocessors and UARTs through 3-state binary outputs and UART handshake mode.
- Low power consumption and minimal input bias current.
- Elimination of overrange hangover, crosstalk, and hysteresis effects due to the zero-integrator phase.
- Enhanced current sourcing capabilities to drive large capacitances on microprocessor buses.
Applications
The ICL7109EQH is suitable for various applications, including:
- Data acquisition systems where high accuracy and low power consumption are critical.
- Remote data logging applications that require serial data transmission via UARTs.
- Systems that benefit from a low-cost, one-per-channel alternative to analog multiplexing.
Q & A
- What is the resolution of the ICL7109EQH A/D converter?
The ICL7109EQH has a resolution of 12 bits. - What is the architecture of the ICL7109EQH?
The ICL7109EQH uses a dual slope architecture. - What is the reference type for the ICL7109EQH?
The reference type is external. - What are the supply voltage requirements for the ICL7109EQH?
The device requires ±5V for both analog and digital supply voltages. - What is the package type of the ICL7109EQH?
The package type is a 44-PLCC (Plastic Leaded Chip Carrier). - How does the ICL7109EQH interface with microprocessors and UARTs?
The device interfaces through 3-state binary outputs and UART handshake mode. - What are the key advantages of the ICL7109EQH in terms of accuracy?
The device offers high accuracy with low rollover error and zero reading drift. - Is the ICL7109EQH suitable for remote data logging applications?
Yes, it is suitable for remote data logging applications due to its ability to work with UARTs for serial data transmission. - What are the benefits of the zero-integrator phase in the ICL7109EQH?
The zero-integrator phase eliminates overrange hangover, crosstalk, and hysteresis effects. - How does the ICL7109EQH handle large capacitances on microprocessor buses?
The device has enhanced current sourcing capabilities to rapidly drive large capacitances.
