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MAX194
Analog Data Converters Analog-to-Digital Converters MAX194
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MAX194

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14-Bit, 85ksps ADC with 10µA Shutdown

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Product Details

See parametric specs for Precision ADCs (< 5Msps)

Key Features

See parametric specs for Precision ADCs (< 5Msps)
Parametric specs for Precision ADCs (< 5Msps)
Resolution (bits) (ADC) 14
# Input Channels 1
Conv. Rate (ksps) (max) 85
Data Bus SPI
ADC Architecture SAR
Diff/S.E. Input S.E. Only
External VREF (V) (max) 5
Unipolar VIN (V) (max) 5
Bipolar VIN (±V) (max) 2.5
INL (±LSB) 1
Package/Pins PDIP/16
SOIC (W)/16
Budgetary
Price (See Notes) 		19.86
See parametric specs for Precision ADCs (< 5Msps)
View Less

Simplified Block Diagram

Technical Docs

Data Sheet 14-Bit, 85ksps ADC with 10µA Shutdown Dec 01, 1997
App Note Interfacing the MAX195 ADC to the TMS320C3X Evaluation Module

Support & Training

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Filtered Search

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

Parameters

Parametric specs for Precision ADCs (<u><</u> 5Msps)
Resolution (bits) (ADC) 14
# Input Channels 1
Conv. Rate (ksps) (max) 85
Data Bus SPI
ADC Architecture SAR
Diff/S.E. Input S.E. Only
External VREF (V) (max) 5
Unipolar VIN (V) (max) 5
Bipolar VIN (±V) (max) 2.5
INL (±LSB) 1
Package/Pins PDIP/16
SOIC (W)/16
Budgetary
Price (See Notes) 		19.86
See parametric specs for Precision ADCs (<u><</u> 5Msps)

Key Features

  • True 14-Bit Accuracy:
    • 1/2LSB INL
    • 82dB SINAD
  • 9.4µs Conversion Time
  • 10µA Shutdown Mode
  • Built-In Track/Hold
  • AC and DC Specified
  • Unipolar (0V to VREF) and Bipolar (-VREF to VREF) Input Range
  • Three-State Serial-Data Output
  • Small 16-Pin DIP, SO, and Ceramic SB Packages
  • Pin-Compatible 16-Bit Upgrade (MAX195)

Applications/Uses

  • Audio
  • Digital Signal Processing (DSP)
  • Industrial Controls
  • Medical Signal Acquisition
  • Multiple Transducer Measurements
  • Portable Instrumentation
  • Robotics
  • Vibration Analysis

Description

The MAX194 is a 14-bit successive-approximation analog-to-digital converter (ADC) that combines high speed, high accuracy, low power consumption, and a 10µA shutdown mode. Internal calibration circuitry corrects linearity and offset errors to maintain the full rated performance over the operating temperature range without external adjustments. The capacitive-DAC architecture provides an inherent 85ksps track/hold function.

The MAX194, with an external reference (up to +5V), offers a unipolar (0V to VREF) or bipolar (-VREF to VREF) pin-selectable input range. Separate analog and digital supplies minimize digital-noise coupling.

The chip select (active-low CS) input controls the three-state serial-data output. The output can be read either during conversion as the bits are determined, or following conversion at up to 5Mbps using the serial clock (SCLK). The end-of-conversion (active-low EOC) output can be used to interrupt a processor, or can be connected directly to the convert input (active-low CONV) for continuous, full-speed conversions.

The MAX194 is available in 16-pin DIP, wide SO, and ceramic sidebraze packages. The output data format provides pin-for-pin and functional compatibility with the 16-bit MAX195 ADC.

Simplified Block Diagram

MAX194: Functional Diagram MAX194: Functional Diagram Zoom icon

Technical Docs

Data Sheet 14-Bit, 85ksps ADC with 10µA Shutdown Dec 01, 1997
App Note Interfacing the MAX195 ADC to the TMS320C3X Evaluation Module

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 .