Overview
The MAX191BEWG+T is a high-performance, 12-bit Analog-to-Digital Converter (ADC) from Analog Devices Inc./Maxim Integrated. Designed for precision data acquisition, this ADC is ideal for systems requiring high accuracy and moderate sampling rates. The MAX191 features a successive approximation register (SAR) architecture, ensuring high accuracy and repeatability. It operates with either a single +5V supply or dual ±5V supplies, allowing for ground-referenced bipolar input signals. The device is packaged in a 24-SOIC (Small Outline Integrated Circuit) case, making it suitable for integration into various circuit designs.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Number of Bits | 12 | |
| Sampling Rate (Per Second) | 100k | sps |
| Number of Inputs | 1 | |
| Input Type | Pseudo-Differential | |
| Data Interface | SPI, Parallel | |
| Architecture | SAR (Successive Approximation Register) | |
| Reference Type | Internal with adjustment capability | |
| Voltage - Supply, Analog | ±5V, 5V | V |
| Voltage - Supply, Digital | 5V | V |
| Operating Temperature | -40°C ~ 85°C | °C |
| Conversion Time | 7.5µs | µs |
| Acquisition Time | 2µs | µs |
| Power Consumption (Operating Mode) | 3mA | mA |
| Power Consumption (Power-Down Mode) | 50µA | µA |
Key Features
- High Precision: 12-bit resolution with 1/2 LSB linearity.
- Fast Sampling Rate: 100ksps sampling rate suitable for moderate speed applications.
- Flexible Interfacing: Supports SPI, QSPI, MICROWIRE, and two 8-bit parallel interface modes.
- Low Power Consumption: 3mA in operating mode and 50µA in power-down mode.
- Internal Reference: Features an internal voltage reference with adjustment capability for trimming system gain errors.
- Track/Hold Circuitry: Built-in track/hold (T/H) circuitry for accurate signal acquisition.
- Wide Operating Temperature Range: Operational from -40°C to 85°C, enhancing reliability in various environments.
Applications
- Precision Data Acquisition: Ideal for systems requiring high accuracy data conversion.
- Instrumentation and Control Systems: Suitable for high-accuracy process control and electromechanical systems.
- Battery-Powered Data Logging: Low power consumption makes it suitable for battery-powered applications.
- PC Pen Digitizers: Used in digital signal processing and automatic testing systems.
- Telecommunications: Applicable in various telecommunications and digital signal processing (DSP) applications.
Q & A
- What is the resolution of the MAX191BEWG+T ADC?
The MAX191BEWG+T has a 12-bit resolution.
- What is the sampling rate of the MAX191BEWG+T?
The MAX191BEWG+T has a guaranteed sampling rate of 100ksps.
- What types of data interfaces does the MAX191BEWG+T support?
The MAX191BEWG+T supports SPI, QSPI, MICROWIRE, and two 8-bit parallel interface modes.
- What is the operating temperature range of the MAX191BEWG+T?
The MAX191BEWG+T operates within a temperature range of -40°C to 85°C.
- Does the MAX191BEWG+T have an internal voltage reference?
Yes, the MAX191BEWG+T features an internal voltage reference with adjustment capability.
- What is the power consumption of the MAX191BEWG+T in operating and power-down modes?
The power consumption is 3mA in operating mode and 50µA in power-down mode.
- What package type is the MAX191BEWG+T available in?
The MAX191BEWG+T is available in a 24-SOIC package.
- Is the MAX191BEWG+T suitable for battery-powered applications?
Yes, due to its low power consumption, it is suitable for battery-powered applications.
- What are some common applications of the MAX191BEWG+T?
Common applications include precision data acquisition, instrumentation and control systems, battery-powered data logging, and telecommunications.
- Is the MAX191BEWG+T still in production?
No, the MAX191BEWG+T is obsolete, and prospective buyers should seek replacements or upgrades for future projects.
