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MAX1238 - 12-Bit ADCs

Description

The MAX1236

MAX1239 low-power, 12-bit, multichannel analog-to-digital converters (ADCs) feature internal track/hold (T/H), voltage reference, clock, and an I2C-compatible 2-wire serial interface.

Features

  • High-Speed I2C-Compatible Serial Interface 400kHz Fast Mode 1.7MHz High-Speed Mode.
  • Single-Supply 2.7V to 3.6V (MAX1237/MAX1239) 4.5V to 5.5V (MAX1236/MAX1238).
  • Internal Reference 2.048V (MAX1237/MAX1239) 4.096V (MAX1236/MAX1238).
  • External Reference: 1V to VDD.
  • Internal Clock.
  • 4-Channel Single-Ended or 2-Channel Fully Differential (MAX1236/MAX1237).
  • 12-Channel Single-Ended or 6-Channel Fully Differential (MAX1238/MAX1239).

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Full PDF Text Transcription

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19-2333; Rev 7; 5/10 MAX1236–MAX1239 2.7V to 3.6V and 4.5V to 5.5V, Low-Power, 4-/12-Channel, 2-Wire Serial, 12-Bit ADCs General Description The MAX1236–MAX1239 low-power, 12-bit, multichannel analog-to-digital converters (ADCs) feature internal track/hold (T/H), voltage reference, clock, and an I2C-compatible 2-wire serial interface. These devices operate from a single supply of 2.7V to 3.6V (MAX1237/ MAX1239) or 4.5V to 5.5V (MAX1236/MAX1238) and require only 670µA at the maximum sampling rate of 94.4ksps. Supply current falls below 230µA for sampling rates under 46ksps. AutoShutdown™ powers down the devices between conversions, reducing supply current to less than 1µA at low throughput rates.
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