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2x4-Channel, Simultaneous-Sampling 12-Bit ADCs

Product Details

Key Features

Parametric specs for Precision ADCs (< 5Msps)
Resolution (bits) (ADC) 12
# Input Channels 8
Conv. Rate (ksps) (max) 116
Data Bus µP/12
ADC Architecture SAR
Diff/S.E. Input S.E. Only
Internal VREF (V) (nominal) 2.5
External VREF (V) (min) 2.4
External VREF (V) (max) 2.6
Bipolar VIN (±V) (max) 5
INL (±LSB) 0.6
Package/Pins SSOP/36
Budgetary
Price (See Notes)
12.53
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Simplified Block Diagram

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Parameters

Parametric specs for Precision ADCs (<u><</u> 5Msps)
Resolution (bits) (ADC) 12
# Input Channels 8
Conv. Rate (ksps) (max) 116
Data Bus µP/12
ADC Architecture SAR
Diff/S.E. Input S.E. Only
Internal VREF (V) (nominal) 2.5
External VREF (V) (min) 2.4
External VREF (V) (max) 2.6
Bipolar VIN (±V) (max) 5
INL (±LSB) 0.6
Package/Pins SSOP/36
Budgetary
Price (See Notes)
12.53

Key Features

  • Four Simultaneous-Sampling T/H Amplifiers with Two Multiplexed Inputs (Eight Single-Ended Inputs Total)
  • 2µs Conversion Time per Channel
  • Throughput:
    • 390ksps (1 Channel)
    • 218ksps (2 Channels)
    • 152ksps (3 Channels)
    • 116ksps (4 Channels)
  • Input Range: ±5V (MAX115)
    • ±2.5V (MAX116)
  • Fault-Protected Input Multiplexer (±17V)
  • Internal +2.5V or External Reference Operation
  • Programmable On-Board Sequencer
  • High-Speed Parallel DSP Interface
  • Internal 10MHz Clock

Applications/Uses

  • Automatic Utility Meter Reading
  • Automotive ABS
  • Industrial Sensor Transmitters/Transducers
  • Motor and Motion Control
  • Programmable Logic Controllers

Description

The MAX115/MAX116 are high-speed, multichannel, 12-bit data-acquisition systems (DAS) with simultaneous track/holds (T/Hs). These devices contain a 12-bit, 2µs, successive-approximation analog-to-digital converter (ADC), a +2.5V reference, a buffered reference input, and a bank of four simultaneous-sampling T/H amplifiers that preserve the relative phase information of the sampled inputs. The MAX115/MAX116 have two multiplexed inputs for each T/H, allowing a total of eight inputs. In addition, the converter is overvoltage tolerant to ±17V. A fault condition on any channel will not damage the IC. Available input ranges are ±5V (MAX115) and ±2.5V (MAX116).

The parallel interface's data access and bus release timing specifications are compatible with most popular digital signal processors and 16-bit/32-bit microprocessors. The MAX115/MAX116 conversion results can be accessed without resorting to wait-states.

Simplified Block Diagram

MAX115, MAX116: Typical Operating Circuit MAX115, MAX116: 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 .