MAX1271A, MAX1271B

Multirange, +5V, 8-Channel, Serial 12-Bit ADCs

12-Bit, 8-Channel, Serial ADCs Have +/-17V Fault-Protected Inputs


Please check latest availability status for a specific part variant.

Description

The MAX1270/MAX1271 are multirange, 12-bit data-acquisition systems (DAS) that require only a single +5V supply for operation, yet accept signals at their analog inputs that may span above the power-supply rail and below ground. These systems provide eight analog input channels that are independently software programmable for a variety of ranges: ±10V, ±5V, 0 to +10V, 0 to +5V for the MAX1270; ±VREF, ±VREF/2, 0 to VREF, 0 to VREF/2 for the MAX1271. This range switching increases the effective dynamic range to 14 bits and provides the flexibility to interface 4-20mA, ±12V, and ±15V powered sensors directly to a single +5V system. In addition, these converters are fault protected to ±16.5V; a fault condition on any channel will not affect the conversion result of the selected channel. Other features include a 5MHz bandwidth track/hold, software-selectable internal/external clock, 110ksps throughput rate, and internal 4.096V or external reference operation.

The MAX1270/MAX1271 serial interface directly connects to SPI™/QSPI™ and MICROWIRE™ devices without external logic.

A hardware shutdown input (SHDN-bar) and two software-programmable power-down modes, standby (STBYPD) or full power-down (FULLPD), are provided for low-current shutdown between conversions. In standby mode, the reference buffer remains active, eliminating start-up delays.

The MAX1270/MAX1271 are available in 24-pin narrow DIP or space-saving 28-pin SSOP packages.
MAX1270, MAX1270A, MAX1270B, MAX1271, MAX1271A, MAX1271B: Typical Operating Circuit MAX1270, MAX1270A, MAX1270B, MAX1271, MAX1271A, MAX1271B: Typical Operating Circuit Enlarge+

Key Features

  • 12-Bit Resolution, 1/2LSB Linearity
  • +5V Single-Supply Operation
  • SPI/QSPI and MICROWIRE-Compatible 3-Wire Interface
  • Four Software-Selectable Input Ranges
    • MAX1270: 0 to +10V, 0 to +5V, ±10V, ±5V
    • MAX1271: 0 to VREF, 0 to VREF/2, ±VREF, ±VREF/2
  • Eight Analog Input Channels
  • 110ksps Sampling Rate
  • ±16.5V Overvoltage-Tolerant Input Multiplexer
  • Internal 4.096V or External Reference
  • Two Power-Down Modes
  • Internal or External Clock
  • 24-Pin Narrow DIP or 28-Pin SSOP Packages

Applications/Uses

  • Automatic Testing
  • Battery-Powered Instruments
  • Data Acquisition Systems
  • Industrial Control Systems
  • Medical Instruments
  • Robotics
Part NumberResolution
(bits)
Input Chan.Conv. Rate
(ksps)
ADC ArchitectureData BusDiff/S.E. InputInternal VREF
(V)
External VREF
(V)
External VREF
(V)
Unipolar VIN
(V)
Bipolar VIN
(±V)
SNR
(dB)
THD
(dB)
INL
(±LSB)
Package/PinsBudgetary
Price
ADCmaxnominalminmaxmaxmaxSee Notes
MAX1270 128110SARSPIS.E. Only4.0962.44.18101070-871
PDIP/24
SSOP/28
$12.55 @1k
MAX1271 4.0962.048
PDIP/24
SSOP/28
$11.57 @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.


MAX1270EVC16: Evaluation Kit/Evaluation System for the MAX1270, MAX1271, MAX127, and MAX128
MAX1270EVKIT: Evaluation Kit/Evaluation System for the MAX1270, MAX1271, MAX127, and MAX128
MAX1270EVSYS: Evaluation Kit/Evaluation System for the MAX1270, MAX1271, MAX127, and MAX128

Quality and Environmental Data

Request Reliability Report for: MAX1271A  MAX1271B 
Lead-Free Package Tin (Sn) Whisker Reports

CAD Symbols and Footprints

  • MAX1271ACAI+
  • MAX1271ACNG+
  • MAX1271AEAI+
  • MAX1271AENG+
  • MAX1271BCAI+
  • MAX1271BCAI+T
  • MAX1271BCNG+
  • MAX1271BEAI+
  • MAX1271BEAI+T
  • MAX1271BENG+
  • 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


    Belle Isle 2020
    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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