250ksps, +3V, 8-/4-Channel, 10-Bit ADCs with +2.5V Reference and Parallel Interface

 

Part Number	Replacement	Explanation

Description

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The MAX1061/MAX1063 low-power, 10-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. They operate with a single +3V analog supply and feature a V_LOGIC pin that allows them to interface directly with a +1.8V to +3.6V digital supply.

Power consumption is only 5.7mW (V_DD = V_LOGIC) at the maximum sampling rate of 250ksps. Two software-selectable power-down modes enable the MAX1061/MAX1063 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 MAX1061 has eight input channels and the MAX1063 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 MAX1061 is available in a 28-pin QSOP package, while the MAX1063 is available in a 24-pin QSOP. For pin-compatible +5V, 10-bit versions, refer to the MAX1060/MAX1064 data sheet.

MAX1061, MAX1063: Typical Operating Circuit Enlarge+

Key Features

• 10-Bit Resolution, ±0.5 LSB Linearity
• +3V Single-Supply Operation
• User-Adjustable Logic Level (+1.8V to +3.6V)
• Internal +2.5V Reference
• Software-Configurable, Analog Input Multiplexer
  • 8-Channel Single Ended/
  • 4-Channel Pseudo-Differential (MAX1061)
  • 4-Channel Single Ended/
  • 2-Channel Pseudo-Differential (MAX1063)
• Software-Configurable, Unipolar/Bipolar Inputs
• Low Power
  • 1.9mA (250ksps)
  • 1.0mA (100ksps)
  • 400µA (10ksps)
  • 2µA (Shutdown)
• Internal 3MHz Full-Power Bandwidth Track/Hold
• Byte-Wide Parallel (8 + 2) Interface
• Small Footprint:
  • 28-Pin QSOP (MAX1061)
  • 24-Pin QSOP (MAX1063)

Applications/Uses

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