MAX1266 Datasheet

• 12-Bit Resolution, ±0.5 LSB Linearity
• Single +5V Operation
• Internal +2.5V Reference
• Software-Configurable Analog Input Multiplexer
  • 6-Channel Single Ended/3-Channel Pseudo-Differential (MAX1266)
• Software-Configurable Unipolar/Bipolar Analog Inputs
• Low Current
  • 2.8mA (420ksps)
  • 1.0mA (100ksps)
  • 400µA (10ksps)
  • 2µA (Shutdown)
• Internal 6MHz Full-Power Bandwidth Track/Hold
• Parallel 12-Bit Interface
• Small Footprint
  • 28-Pin QSOP (MAX1266)

• Data Acquisition Systems
• Data Logging
• Energy Management
• Industrial Controls Systems
• Patient Monitoring
• Touch Screens

The MAX1266 low-power, 12-bit analog-to-digital converters (ADCs) feature a successive-approximation ADC, automatic power-down, fast wake-up (2µs), an on-chip clock, +2.5V internal reference, and a high-speed 12-bit parallel interface. They operate with a single +5V analog supply.

Power consumption is only 10mW at the maximum sampling rate of 420ksps. Two software-selectable power-down modes enable the MAX1266 to be shut down between conversions; accessing the parallel interface returns them to normal operation. Powering down between conversions can reduce supply below 10µA at lower sampling rates.

Both devices offer software-configurable analog inputs for unipolar/bipolar and single-ended/pseudo-differential operation. In single-ended mode, the MAX1266 has six input channels.

Excellent dynamic performance and low power, combined with ease of use and small package size, make these converters ideal for battery-powered and data-acquisition applications or for other circuits with demanding power-consumption and space requirements. The MAX1266 is offered in a 28-pin QSOP package. For pin-compatible +3V, 12-bit versions, see the MAX1265.