Description

The MAX186BEWP is a 12-bit data-acquisition system that belongs to the ADCs/DACs product category. It features an 8-channel multiplexer that can operate with a single +5V supply or dual ±5V supplies. With a high bandwidth track/hold and serial interface, this device has high conversion speed and ultra-low power consumption. This system supports unipolar/bipolar and single-ended/differential configurations with software-configurable analog inputs. The 4-wire serial interface connects directly to SPI, QSPI™ and MICROWIRE® devices without external logic. The MAX186BEWP uses either its internal clock or an external serial-interface clock to perform successive approximation A/D conversions.

Specifications and features

• 12-bit data-acquisition system
• 8-channel multiplexer
• Operates with a single +5V supply or dual ±5V supplies
• High bandwidth track/hold and serial interface
• High conversion speed and ultra-low power consumption
• Supports unipolar/bipolar and single-ended/differential configurations
• 4-wire serial interface connects directly to SPI, QSPI™ and MICROWIRE® devices
• Can use either internal or external clock to perform conversions
• Internal track/hold, 133kHz sampling rate
• Internal 4.096V reference (MAX186)
• Software-configurable inputs
• 20-pin PDIP, SO, SSOP packages available

Application Scenarios

The MAX186BEWP is suitable for a variety of applications such as portable data logging, data acquisition, high-accuracy process control, automatic testing, robotics, battery-powered instruments, and medical instruments.

Comparison

• Supports both unipolar/bipolar and single-ended/differential configurations
• Internal track/hold, 133kHz sampling rate for high accuracy measurements
• Low power consumption at only 1.5mA (Operating Mode), 2µA (Power-Down Mode)
• Offers serial strobe output allowing direct connection to TMS320 family digital signal processors
• 4-wire serial interface can operate beyond 4MHz when the internal clock is used

• Limited number of channels with only 8-channel single-ended or 4-channel differential inputs
• Only available in 20-pin PDIP, SO, SSOP packages