Overview
The MAX191BC/D is a 12-bit analog-to-digital converter (ADC) produced by Analog Devices Inc./Maxim Integrated. This monolithic, CMOS ADC features differential inputs, a track/hold (T/H) circuit, an internal voltage reference, and flexible interface options. It is designed for high accuracy and low power consumption, making it suitable for a variety of applications requiring precise analog-to-digital conversion.
Key Specifications
| Specification | Value |
|---|---|
| Resolution | 12 bits |
| Linearity | 1/2 LSB |
| Sampling Rate | 100 ksamples/s |
| Conversion Time | 7.5 µs |
| Acquisition Time | 2 µs |
| Power Supply | Single +5V or dual ±5V |
| Operating Current | 3 mA (operating), 20 µA (power-down) |
| Interface | Serial (SPI, QSPI, MICROWIRE) and 8-bit parallel |
| Package | 24-pin Narrow DIP and Wide SO |
| Operating Temperature Range | 0°C to +70°C, -40°C to +85°C, -55°C to +125°C (depending on the model) |
Key Features
- 12-bit resolution with 1/2 LSB linearity
- Single +5V or dual ±5V operation
- Built-in track/hold circuit
- Internal voltage reference with adjustment capability
- Low power consumption: 3 mA in operating mode and 20 µA in power-down mode
- 100 ksamples/s sampling rate
- Serial and 8-bit parallel microprocessor interface
- Logic power-down input to reduce supply current
Applications
- Battery-Powered Data Logging
- PC Pen Digitizers
- High-Accuracy Process Control
- Electromechanical Systems
- Data-Acquisition Boards for PCs
- Automatic Testing Systems
- Telecommunications
- Digital Signal Processing (DSP)
Q & A
- What is the resolution of the MAX191BC/D ADC?
The MAX191BC/D has a 12-bit resolution. - What are the power supply options for the MAX191BC/D?
The MAX191BC/D can operate from a single +5V supply or dual ±5V supplies. - What is the sampling rate of the MAX191BC/D?
The MAX191BC/D has a sampling rate of 100 ksamples/s. - What are the interface options for the MAX191BC/D?
The MAX191BC/D supports serial (SPI, QSPI, MICROWIRE) and 8-bit parallel interfaces. - How much current does the MAX191BC/D consume in power-down mode?
The MAX191BC/D consumes 20 µA in power-down mode. - What is the conversion time of the MAX191BC/D?
The conversion time of the MAX191BC/D is 7.5 µs. - Does the MAX191BC/D require external components for the power supply and reference?
No, the MAX191BC/D only requires decoupling capacitors for the power supply and reference. - What are the package options for the MAX191BC/D?
The MAX191BC/D is available in 24-pin Narrow DIP and Wide SO packages. - What are the operating temperature ranges for the MAX191BC/D?
The operating temperature ranges are 0°C to +70°C, -40°C to +85°C, and -55°C to +125°C depending on the model. - Can the MAX191BC/D be used in battery-powered applications?
Yes, the MAX191BC/D is suitable for battery-powered applications due to its low power consumption.
