Overview
The MAX1284BESA+T is a 12-bit analog-to-digital converter (ADC) produced by Analog Devices Inc./Maxim Integrated. This device combines a high-bandwidth track/hold (T/H) circuit, a serial interface with high conversion speed, an internal +2.5V reference, and low power consumption. It operates from a single +4.5V to +5.5V supply and is designed for applications requiring low power and small package size, making it ideal for remote-sensor and data-acquisition systems.
Key Specifications
| Specification | Value |
|---|---|
| Resolution | 12 bits |
| Conversion Rate | 400ksps/300ksps |
| Supply Voltage | +4.5V to +5.5V |
| Internal Reference | +2.5V |
| Interface | 3-wire serial (SPI™/QSPI™/MICROWIRE™ compatible) |
| Package Type | 8-pin SOIC |
| Power Consumption | Low power |
| Shutdown Current | < 2µA (typical) |
Key Features
- High-bandwidth track/hold (T/H) circuit
- High conversion speed with successive-approximation register (SAR) circuitry
- Internal +2.5V reference voltage
- Low power consumption and small package size
- 3-wire serial interface compatible with SPI™/QSPI™/MICROWIRE™ devices
- Shutdown mode to reduce supply current to below 2µA
Applications
- Remote-sensor applications
- Data-acquisition systems
- Circuits with demanding power consumption and space requirements
Q & A
- What is the resolution of the MAX1284BESA+T ADC?
The MAX1284BESA+T has a resolution of 12 bits.
- What are the conversion rates of the MAX1284BESA+T?
The conversion rates are 400ksps and 300ksps.
- What is the supply voltage range for the MAX1284BESA+T?
The supply voltage range is +4.5V to +5.5V.
- Does the MAX1284BESA+T have an internal reference voltage?
Yes, it has an internal +2.5V reference voltage.
- What type of interface does the MAX1284BESA+T use?
The MAX1284BESA+T uses a 3-wire serial interface compatible with SPI™/QSPI™/MICROWIRE™ devices.
- How does the shutdown mode affect the device?
Pulling the SHDN pin low shuts the device down and reduces the supply current to below 2µA.
- What is the package type of the MAX1284BESA+T?
The package type is an 8-pin SOIC.
- What are some typical applications for the MAX1284BESA+T?
Typical applications include remote-sensor and data-acquisition systems, as well as circuits with demanding power consumption and space requirements.
- How does the track/hold circuit work in the MAX1284BESA+T?
The track/hold circuit acquires and stores the analog input signal in the internal hold capacitor during the track mode, and maintains a constant input to the ADC’s SAR section during the hold mode.
- Is the MAX1284BESA+T pin-compatible with other devices?
Yes, it is pin-compatible with higher-speed versions of the MAX1240/MAX1241.
