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265ksps, +3V, 6-/2-Channel, 12-Bit ADCs with +2.5V Reference and Parallel Interface

Smallest, Low-Power, Parallel-Output 12-Bit ADCs

Product Details

Key Features

Simplified Block Diagram

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Sampling:
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Key Features

  • 12-Bit Resolution, ±0.5 LSB Linearity
  • +3V Single-Supply Operation
  • Internal +2.5V Reference
  • Software-Configurable Analog Input Multiplexer
    • 6-Channel Single-Ended/3-Channel Pseudo-Differential (MAX1295)
    • 2-Channel Single-Ended/1-Channel Pseudo-Differential (MAX1297)
  • Software-Configurable Unipolar/Bipolar Analog Inputs
  • Low Current
    • 1.9mA (265ksps)
    • 1.0mA (100ksps)
    • 400µA (10ksps)
    • 2µA (Shutdown)
  • Internal 3MHz Full-Power Bandwidth Track/Hold
  • Parallel 12-Bit Interface
  • Small Footprint
    • 28-Pin QSOP (MAX1295)
    • 24-Pin QSOP (MAX1297)

Applications/Uses

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

Description

The MAX1295/MAX1297 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 +2.7V to +3.6V analog supply.

Power consumption is only 5.4mW at the maximum sampling rate of 265ksps. Two software-selectable power-down modes enable the MAX1295/MAX1297 to be shut down between conversions; accessing the parallel interface returns them to normal operation. Powering down between conversions can reduce supply current 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 MAX1295 has six input channels and the MAX1297 has two (three input channels and one input channel, 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 MAX1295/MAX1297 tri-states active-low INT when active-low CS goes high. Refer to MAX1265/MAX1267 if tri-stating active-low INT is not desired.

The MAX1295 is offered in a 28-pin QSOP package, while the MAX1297 comes in a 24-pin QSOP. For pin-compatible +5V, 12-bit versions, refer to the MAX1294/MAX1296 data sheet.

Simplified Block Diagram

 

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .

Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.