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MAX1392, MAX1395
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


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Status
Active: In Production.

Description
FULL DATA SHEET (PDF, 504kB)
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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) and military (-55°C to +125°C) temperature ranges.

An evaluation kit is available:  MAX1396EVKIT  

Key Features   Applications/Uses
  • 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

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

    Key Specifications:  Precision ADCs (< 5Msps)
    Part Number Resolution
    (bits)
    Input Chan. Conv. Rate
    (ksps)
    Conv. Time
    (µs)
    Data Bus
    (bits)
    Ref.
    (V)
    VIN
    (V)
    Diff. Inputs VSUPPLY
    (V)
    ICC
    (mA)
    Power
    (mW)
    Standby Mode Package/Pins Price
    ADC max typ typ See Notes
    MAX1392  10 1 350 - Serial Ext. 0 to Vref or ±Vref Yes
    1.5
    1.8
    2.5
    3
    3.3
    0.583 0.874 Yes
    TDFN-EP/10
    $1.81 @5k
    MAX1395  2 357 2.2 0 to Vref No 0.52 0.832
    TDFN-EP/10
    $1.93 @1k
    See All Precision ADCs (< 5Msps) (377)

    Diagram
    MAX1392, MAX1395: Typical Operating Circuit
    Typical Operating Circuit

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    Document Ref.: 19-3709; Rev 2; 2006-11-07
    This page last modified: 2006-11-10


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