Overview
The MAX191BCNG+ is a low-power, 12-bit sampling analog-to-digital converter (ADC) produced by Analog Devices Inc./Maxim Integrated. This monolithic CMOS device features differential inputs, a track/hold (T/H) circuit, an internal voltage reference, and the ability to operate with either an internal or external clock. It supports both parallel and serial microprocessor interfaces, making it versatile for various applications. The MAX191BCNG+ is known for its high accuracy, low power consumption, and compact design, making it suitable for a wide range of electronic systems.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices Inc./Maxim Integrated |
| Number of Bits | 12 |
| Sampling Rate | 100 ksps |
| 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 |
| Voltage-Supply Digital | 5V |
| Operating Temperature | 0°C ~ 70°C |
| Conversion Time | 7.5 µs |
| Acquisition Time | 2 µs |
| Power Consumption | 3 mA (operating), 50 µA (power-down) |
| Package | DIP24 |
Key Features
- 12-bit resolution with 1/2 LSB linearity
- Low power consumption: 3 mA in operating mode and 50 µA in power-down mode
- Built-in track/hold circuitry
- Internal voltage reference with adjustment capability
- Supports single +5V or dual ±5V supplies
- Flexible interface options: two 8-bit parallel modes and a serial interface mode compatible with SPI, QSPI, and MICROWIRE standards
- No external hold capacitor required for the T/H circuit
- Logic power-down input to reduce power consumption
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 MAX191BCNG+ ADC?
The MAX191BCNG+ has a 12-bit resolution.
- What is the sampling rate of the MAX191BCNG+?
The MAX191BCNG+ has a guaranteed sampling rate of 100 ksps.
- What types of voltage supplies can the MAX191BCNG+ operate with?
The MAX191BCNG+ can operate with either a single +5V supply or dual ±5V supplies.
- Does the MAX191BCNG+ require external components for its power supply and reference?
No, the MAX191BCNG+ only requires decoupling capacitors for the power supply and reference.
- What are the interface options available for the MAX191BCNG+?
The MAX191BCNG+ supports two 8-bit parallel modes and a serial interface mode compatible with SPI, QSPI, and MICROWIRE standards.
- How does the power-down feature work on the MAX191BCNG+?
The MAX191BCNG+ has a logic power-down input that reduces the supply current to 50 µA max, including the internal-reference current.
- What is the operating temperature range of the MAX191BCNG+?
The MAX191BCNG+ operates within a temperature range of 0°C to 70°C.
- What is the conversion time and acquisition time of the MAX191BCNG+?
The MAX191BCNG+ has a conversion time of 7.5 µs and an acquisition time of 2 µs.
- Is the MAX191BCNG+ suitable for battery-powered applications?
Yes, the MAX191BCNG+ is suitable for battery-powered applications due to its low power consumption.
- What kind of input does the MAX191BCNG+ support?
The MAX191BCNG+ supports pseudo-differential inputs.
