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1.5V to 3.6V, 357ksps, 1-Channel True-Differential/2-Channel Single-Ended, 10-Bit, SAR ADCs

Ultra-Low Power and Supply Voltage Make These ADCs Ideal for Battery-Powered Applications

Product Details

Key Features

Simplified Block Diagram

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Key Features

  • 357ksps 10-Bit Successive-Approximation Register (SAR) ADCs
  • Single True-Differential Analog Input Channel with Unipolar-/Bipolar-Selected Input (MAX1392)
  • Dual Single-Ended Input Channel with Channel-Selected Input (MAX1395)
  • ±0.5 LSB INL, ±0.5 LSB DNL, No Missing Codes
  • ±1 LSB Total Unadjusted Error
  • 61dB SINAD at 85kHz Input Frequency
  • Single-Supply Voltage (+1.5V to +3.6V)
  • 0.945mW at 350ksps, 1.8V
  • 0.27mW at 100ksps, 1.8V
  • 3.1µW at 1ksps, 1.8V
  • < 1µA Shutdown Current
  • External Reference (0.6V to VDD)
  • AutoShutdown Between Conversions
  • SPI-/QSPI-/MICROWIRE-/DSP-Compatible, 3- or 4-Wire Serial Interface
  • Small (3mm x 3mm), 10-Pin TDFN

Applications/Uses

  • Battery-Powered Instruments
  • Data Acquisition
  • Medical Instruments
  • Portable Datalogging
  • Process Control

Description

The MAX1392/MAX1395 micropower, serial-output, 10-bit, analog-to-digital converters (ADCs) operate with a single power supply from +1.5V to +3.6V. These ADCs feature automatic shutdown, fast wake-up, and a high-speed 3-wire interface. Power consumption is only 0.740mW (VDD = +1.5V) at the maximum conversion rate of 357ksps. AutoShutdown™ between conversions reduces power consumption at slower throughput rates.

The MAX1392/MAX1395 require an external reference VREF that has a wide range from 0.6V to VDD. The MAX1392 provides one true-differential analog input that accepts signals ranging from 0 to VREF (unipolar mode) or ±VREF/2 (bipolar mode). The MAX1395 provides two single-ended inputs that accept signals ranging from 0 to VREF. Analog conversion results are available through a 5MHz, 3-wire SPI™-/QSPI™-/MICROWIRE™-/digital signal processor (DSP)-compatible serial interface. Excellent dynamic performance, low voltage, low power, ease of use, and small package sizes make these converters ideal for portable battery-powered data-acquisition applications, and for other applications that demand low power consumption and minimal space.

The MAX1392/MAX1395 are available in a space-saving (3mm x 3mm) 10-pin TDFN package. The parts operate over the extended (-40°C to +85°C) temperature range.

Simplified Block Diagram

MAX1392, MAX1395: Typical Operating Circuit MAX1392, MAX1395: Typical Operating Circuit Zoom icon

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 .