MAX155

High-Speed, 8-Channel, 8-Bit ADC with Simultaneous Track/Holds and Reference


Please check latest availability status for a specific part variant.

Description

The MAX155/MAX156 are high-speed, 8-bit, multichannel analog-to-digital converters (ADCs) with simultaneous track/holds (T/Hs) to eliminate timing differences between input channel samples. The MAX155 has 8 analog input channels and the MAX156 has 4 analog input channels. Each channel has its own T/H, and all T/Hs sample at the same instant. The ADC converts a channel in 3.6µs and stores the result in an internal 8x8 RAM. The MAX155/MAX156 also feature a 2.5V internal reference and power-down capability, providing a complete, sampling data-acquisition system.

When operating from a single +5V supply, the MAX155/MAX156 perform either unipolar or bipolar, single-ended or differential conversions. For applications requiring wider dynamic range or bipolar conversions around ground, the VSS supply pin may be connected to -5V.

Conversions are initiated with a pulse to the active-low WR pin, and data is accessed from the ADC’s RAM with a pulse to the active-low RD pin. A bidirectional interface updates the channel configuration and provides output data. The ADC may also be wired for output-only operation.The MAX155 comes in 28-pin PDIP and wide SO packages, and the MAX156 comes in 24-pin narrow PDIP and 28-pin wide SO packages.

MAX156: Functional Diagram MAX156: Functional Diagram Enlarge+

Key Features

  • 8 Simultaneously Sampling Track/Hold Inputs
  • 3.6µs Conversion Time Per Channel
  • Unipolar or Bipolar Input Range
  • Single-Ended or Differential Inputs
  • Mixed Input Configurations Possible
  • 2.5V Internal Reference
  • Single +5V or Dual ±5V Supply Operation

Applications/Uses

  • AC Power Meters
  • DSP Analog Input
  • Phase-Sensitive Data Acquisition
  • Portable Data Loggers
  • Vibration and Waveform Analysis
Part NumberResolution
(bits)
Input Chan.Conv. Rate
(ksps)
ADC ArchitectureData BusDiff/S.E. InputInternal VREF
(V)
Unipolar VIN
(V)
Bipolar VIN
(±V)
THD
(dB)
INL
(±LSB)
Package/PinsBudgetary
Price
ADCmaxnominalmaxmaxSee Notes
MAX155 88250SARµP/8Both2.52.52.5-600.5
PDIP/28
SOIC (W)/28
$10.05 @1k
MAX156 4
PDIP/24
SOIC (W)/28
$15.74 @1k
See All Precision ADCs (< 5Msps) (444)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.


MAX155EVKIT: Evaluation Kit for the MAX155

Quality and Environmental Data

Product Reliability Reports: MAX155.pdf 
Lead-Free Package Tin (Sn) Whisker Reports

CAD Symbols and Footprints

  • MAX155ACWI+
  • MAX155ACWI+T
  • MAX155AEWI+
  • MAX155AEWI+T
  • MAX155BCPI+
  • MAX155BCWI+
  • MAX155BEWI+
  • MAX155BEWI+T
  • Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

    Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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    Related Resources


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    05/29/2020 - 05/31/2020, Detroit, MI
    2020 Detroit Grand Prix - Chevrolet Detroit Grand Prix presented by Lear Fast Facts The Chevrolet Detroit Grand Prix presented by Lear was hosted on Belle Isle, May 29 - 30 2020. The event featured the cars of the NTT IndyCar Series, the IMSA WeatherTech SportsCar Championship and the Trans Am Series presented by Pirelli. The weekend is collectively referred to as the Chevrolet Detroit Grand Prix presented by Lear and it once again featured the Chevrolet Dual in Detroit IndyCar doubleheader.

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