Overview
The ADC12138CIMSAX/NOPB is a self-calibrating 12-bit plus sign serial I/O analog-to-digital converter (ADC) produced by Texas Instruments. This device features a built-in multiplexer and sample/hold circuit, making it suitable for a variety of applications requiring precise analog-to-digital conversion. Although the ADC12138CIMSAX/NOPB is currently obsolete and no longer manufactured, it remains an important component in legacy systems and for reference purposes.
Key Specifications
| Specification | Value |
|---|---|
| Resolution | 12-bit plus sign |
| Conversion Time | 8.8 μs (max) |
| Throughput Time | 14 μs (max) |
| Integral Linearity Error | ±2 LSB (max) |
| Supply Voltage | 3.3V or 5V ±10% |
| Power Consumption (3.3V) | 15 mW (max), 40 μW (typ) in power down |
| Power Consumption (5V) | 33 mW (max), 100 μW (typ) in power down |
| Analog Input Range | 0V to 5V |
| Multiplexer Channels | 8 channels |
| Serial I/O Compatibility | MICROWIRE, SPI, and QSPI |
| Operating Temperature | -40°C to 85°C |
Key Features
- Self-calibrating to adjust linearity, zero, and full-scale errors to typically less than ±1 LSB each.
- Programmable acquisition time and variable digital output word length and format.
- No zero or full scale adjustment required.
- Single 5V power supply with optional 3.3V operation.
- Serial I/O interface compatible with MICROWIRE, SPI, and QSPI.
- Power down mode to reduce power consumption.
- Configurable input multiplexer with 8 channels.
- Support for single-ended, differential, or pseudo-differential analog input modes.
Applications
- Pen-based computers
- Digitizers
- Global Positioning Systems (GPS)
- Industrial control systems
- Medical devices requiring precise analog-to-digital conversion
Q & A
- What is the resolution of the ADC12138CIMSAX/NOPB?
The resolution is 12-bit plus sign.
- What is the maximum conversion time of the ADC12138CIMSAX/NOPB?
The maximum conversion time is 8.8 μs.
- What are the power supply options for the ADC12138CIMSAX/NOPB?
The device can operate with either a 3.3V or 5V power supply.
- Does the ADC12138CIMSAX/NOPB require zero or full scale adjustments?
No, the device does not require zero or full scale adjustments.
- What types of serial I/O interfaces does the ADC12138CIMSAX/NOPB support?
The device supports MICROWIRE, SPI, and QSPI serial I/O interfaces.
- How many channels does the multiplexer of the ADC12138CIMSAX/NOPB have?
The multiplexer has 8 channels.
- What is the operating temperature range of the ADC12138CIMSAX/NOPB?
The operating temperature range is -40°C to 85°C.
- Is the ADC12138CIMSAX/NOPB still in production?
No, the ADC12138CIMSAX/NOPB is obsolete and no longer manufactured.
- What are some common applications of the ADC12138CIMSAX/NOPB?
Common applications include pen-based computers, digitizers, GPS systems, and industrial control systems.
- How does the self-calibration feature of the ADC12138CIMSAX/NOPB work?
The self-calibration process adjusts linearity, zero, and full-scale errors to typically less than ±1 LSB each.
