Analog Devices MAX1264 Product Info

• 12-Bit Resolution, ±0.5 LSB Linearity
• +5V Single-Supply Operation
• User-Adjustable Logic Level (+2.7V to +5.5V)
• Internal +2.5V Reference
• Software-Configurable Analog Input Multiplexer
  • 8-Channel Single Ended/4-Channel Pseudo-Differential (MAX1262)
  • 4-Channel Single Ended/2-Channel Pseudo-Differential (MAX1264)
• Software-Configurable Unipolar/Bipolar Analog Inputs
• Low Current
  • 2.5mA (400ksps)
  • 1.0mA (100ksps)
  • 400µA (10ksps)
  • 2µA (Shutdown)
• Internal 6MHz Full-Power Bandwidth Track/Hold
• Byte-Wide Parallel (8 + 4) Interface
• Small Footprint
  • 28-Pin QSOP (MAX1262)
  • 24-Pin QSOP (MAX1264)

The MAX1262/MAX1264 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, byte-wide parallel interface. The devices operate with a single +5V analog supply and feature a V_LOGIC pin that allows them to interface directly with a +2.7V to +5.5V digital supply.

Power consumption is only 10mW (V_DD = V_LOGIC) at a 400ksps max sampling rate. Two software-selectable power-down modes enable the MAX1262/MAX1264 to be shut down between conversions; accessing the parallel interface returns them to normal operation. Powering down between conversions can cut supply current to under 10µA at reduced sampling rates.

Both devices offer software-configurable analog inputs for unipolar/bipolar and single-ended/pseudo-differential operation. In single-ended mode, the MAX1262 has eight input channels and the MAX1264 has four input channels (four and two input channels, respectively, when in pseudo-differential mode).

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 MAX1262 is available in a 28-pin QSOP package, while the MAX1264 comes in a 24-pin QSOP. For pin-compatible +3V, 12-bit versions, refer to the MAX1261/MAX1263 data sheet.

Applications

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