Overview
The MAX1281BCUP+ is a 12-bit analog-to-digital converter (ADC) produced by Analog Devices Inc./Maxim Integrated. This device combines an 8-channel analog-input multiplexer, high-bandwidth track/hold, and a serial interface, offering high conversion speed and low power consumption. It operates from a single supply voltage of +2.7V to +3.6V, making it suitable for a variety of battery-powered and low-power applications.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 12-bit |
| Number of Inputs | 8 (single-ended), 4 (pseudo-differential) |
| Supply Voltage | +2.7V to +3.6V |
| Sampling Rate | 300ksps |
| Data Interface | SPI, QSPI, MICROWIRE |
| Reference Type | Internal, External |
| Power Consumption (Normal Operation) | 2.5mA (300ksps) |
| Power Consumption (Reduced-Power Mode) | 1.3mA |
| Power Consumption (Fast Power-Down Mode) | 0.9mA |
| Power Consumption (Full Power-Down Mode) | 2µA |
Key Features
- 8-channel single-ended or 4-channel pseudo-differential inputs
- Internal multiplexer and track/hold circuitry
- Single-supply operation: +2.7V to +3.6V
- Internal +2.5V reference voltage
- High conversion speed: 300ksps
- Low power consumption with multiple power-down modes
- 4-wire serial interface compatible with SPI, QSPI, and MICROWIRE devices
- Serial strobe output for direct connection to TMS320-family digital signal processors
Applications
- Portable Data Logging
- Data Acquisition Systems
- Medical Instruments
- Battery-Powered Instruments
- Pen Digitizers
- Process Control Systems
Q & A
- What is the resolution of the MAX1281BCUP+ ADC?
The MAX1281BCUP+ has a resolution of 12 bits. - How many input channels does the MAX1281BCUP+ support?
The device supports 8 single-ended or 4 pseudo-differential input channels. - What is the operating supply voltage range for the MAX1281BCUP+?
The device operates from a single supply voltage of +2.7V to +3.6V. - What is the maximum sampling rate of the MAX1281BCUP+?
The maximum sampling rate is 300ksps. - What types of data interfaces does the MAX1281BCUP+ support?
The device supports SPI, QSPI, and MICROWIRE interfaces. - Does the MAX1281BCUP+ have an internal reference voltage?
Yes, it has an internal +2.5V reference voltage. - How much power does the MAX1281BCUP+ consume in normal operation at 300ksps?
The device consumes 2.5mA in normal operation at 300ksps. - What are the different power-down modes available for the MAX1281BCUP+?
The device has reduced-power mode, fast power-down mode, and full power-down mode. - What is the power consumption in full power-down mode?
The power consumption in full power-down mode is 2µA. - Is the MAX1281BCUP+ suitable for battery-powered applications?
Yes, it is suitable due to its low power consumption and single-supply operation.
