Overview
The MAX138CMH+ is a 3 ½ digit analog-to-digital converter (ADC) produced by Analog Devices Inc./Maxim Integrated. This component is part of the MAX138/MAX139 series, which are known for their integrated charge-pump voltage inverter, allowing the measurement of both positive and negative input voltages from a single power supply. The MAX138CMH+ features on-board display drivers, making it suitable for various applications requiring precise analog-to-digital conversion and display capabilities.
Key Specifications
| Specification | Value |
|---|---|
| Resolution | 3 ½ digits |
| Power Supply Voltage | Single +2.5V to +7V |
| Input Voltage Range | Both positive and negative |
| Display Drivers | On-board LED drivers |
| Charge-Pump Voltage Inverter | Internal charge-pump generates negative supply voltage |
| Package Types | Metric Quad Flatpack, Plastic Leaded Chip Carrier, etc. |
Key Features
- Operates from a single +2.5V to +7V power supply
- Measures both positive and negative input voltages due to the internal charge-pump voltage inverter
- On-board LED display drivers for direct display of converted values
- Internal oscillator for timing
- External charge-pump capacitor connected to specific pins
Applications
- Display Driver Electronics
- Industrial automation and control systems
- Instrumentation and measurement equipment
- Consumer electronics requiring precise analog-to-digital conversion and display
Q & A
- What is the resolution of the MAX138CMH+ ADC?
The MAX138CMH+ has a resolution of 3 ½ digits. - What is the power supply voltage range for the MAX138CMH+?
The MAX138CMH+ operates from a single +2.5V to +7V power supply. - Can the MAX138CMH+ measure negative input voltages?
Yes, the MAX138CMH+ can measure both positive and negative input voltages due to its internal charge-pump voltage inverter. - What type of display drivers does the MAX138CMH+ have?
The MAX138CMH+ has on-board LED display drivers. - Is the MAX138CMH+ still in production?
No, the MAX138CMH+ is not in current production. However, similar or equivalent products may be available. - What are some common applications for the MAX138CMH+?
Common applications include display driver electronics, industrial automation, instrumentation, and consumer electronics. - Does the MAX138CMH+ have an internal oscillator?
Yes, the MAX138CMH+ has an internal oscillator for timing. - What is the purpose of the charge-pump capacitor in the MAX138CMH+?
The charge-pump capacitor is connected to specific pins and helps generate a negative supply voltage. - What types of packages are available for the MAX138CMH+?
The MAX138CMH+ is available in various packages including Metric Quad Flatpack and Plastic Leaded Chip Carrier. - Where can I find more information or replacement options for the MAX138CMH+?
You can contact the sales team of the manufacturer or visit their support portal for more information on available options and possible replacement solutions.
