Overview
The ADC12138CIWMX from Texas Instruments is a self-calibrating 12-bit plus sign analog-to-digital converter (ADC) with serial I/O and a built-in multiplexer and sample/hold circuit. This device is part of the ADC12130/ADC12132/ADC12138 family and is designed for high accuracy and flexibility in various data acquisition applications. It features an 8-channel input multiplexer, making it suitable for systems that require multiple analog inputs to be converted into digital signals.
Key Specifications
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Converter Type | General Purpose | Architecture | SAR (Successive Approximation) |
| Resolution | 12-bit + Sign | Number of ADCs | 1 |
| Number of Input Channels | 8 | Sampling Rate | 114 ksps |
| Digital Interface Type | Serial (SPI, QSPI, Microwire) | Input Type | Voltage |
| Input Signal Type | Pseudo-Differential | Voltage Reference | External |
| Polarity of Input Voltage | Unipolar | Voltage Supply Source | Analog and Digital |
| Input Voltage | 5V | Maximum Power Dissipation (mW) | 500 |
| Integral Nonlinearity Error | ±2LSB | Full Scale Error | ±3LSB |
| No Missing Codes (bit) | 12+Sign | Sample and Hold | Yes |
| Minimum Operating Temperature (°C) | -40 | Maximum Operating Temperature (°C) | 85 |
| Package | SOIC-28 | Pin Count | 28 |
| Mounting | Surface Mount | Lead Shape | Gull-wing |
Key Features
- Self-Calibrating: The ADC12138CIWMX features self-calibration, which eliminates the need for zero or full-scale adjustments, ensuring high accuracy without additional calibration steps.
- Serial I/O: Compatible with SPI, QSPI, and Microwire interfaces, allowing for flexible communication with microcontrollers and other digital systems.
- Programmable Acquisition Time: The acquisition time can be programmed to optimize the conversion process based on the application requirements.
- Variable Digital Output Word Length and Format: The word length and format of the digital output can be varied, providing flexibility in data handling.
- Power Down Mode: The device can be powered down to reduce power consumption when not in use, which is beneficial for battery-powered applications.
- Sample and Hold Circuit: Integrated sample and hold circuit ensures accurate conversion of the analog input signal.
Applications
- Data Acquisition Systems: Suitable for various data acquisition applications where multiple analog inputs need to be converted into digital signals.
- Industrial Automation: Used in industrial automation systems for monitoring and controlling analog parameters.
- Medical Devices: Can be used in medical devices that require precise analog-to-digital conversion, such as patient monitoring systems.
- Aerospace and Defense: Applicable in aerospace and defense systems where high accuracy and reliability are critical.
- Automotive Systems: Though not specifically automotive-grade, it can be used in automotive systems that do not require automotive-specific certifications.
Q & A
- Q: What is the resolution of the ADC12138CIWMX?
A: The ADC12138CIWMX has a resolution of 12-bit + sign. - Q: How many input channels does the ADC12138CIWMX have?
A: The ADC12138CIWMX has 8 input channels. - Q: What is the sampling rate of the ADC12138CIWMX?
A: The sampling rate of the ADC12138CIWMX is 114 ksps. - Q: What type of digital interface does the ADC12138CIWMX support?
A: The ADC12138CIWMX supports SPI, QSPI, and Microwire interfaces. - Q: Does the ADC12138CIWMX have a built-in sample and hold circuit?
A: Yes, the ADC12138CIWMX has a built-in sample and hold circuit. - Q: What is the operating temperature range of the ADC12138CIWMX?
A: The operating temperature range is from -40°C to 85°C. - Q: What is the package type of the ADC12138CIWMX?
A: The ADC12138CIWMX comes in a SOIC-28 package. - Q: Is the ADC12138CIWMX self-calibrating?
A: Yes, the ADC12138CIWMX is self-calibrating and does not require zero or full-scale adjustments. - Q: How can I order the ADC12138CIWMX?
A: You can order the ADC12138CIWMX by selecting the 'Add to Cart' button on the product listing page and proceeding to the checkout. - Q: What is the warranty period for the ADC12138CIWMX?
A: The ADC12138CIWMX typically comes with a 1-year warranty covering defects in materials and workmanship under normal use.
