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Maxim > Products > [Analog-to-Digital Converters] 
MAX1272, MAX1273
Fault-Protected, 12-Bit ADCs with Software-Selectable Input Range

Fault-Protected, 12-Bit ADCs with Software-Selectable Input Range


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Status
Active: In Production.

Data Sheet
FULL DATA SHEET (PDF, 884kB)
Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail

Description
The MAX1272/MAX1273 multirange 12-bit data-acquisition systems (DAS) operate with a single 5V supply. The software-programmable analog input accepts a variety of voltage ranges: ±10V, ±5V, 0 to 10V, 0 to 5V for the MAX1272; ±VREF, ±VREF / 2, 0 to VREF, 0 to VREF / 2 for the MAX1273. The software-selectable extended analog input range increases the effective dynamic range to 14 bits and provides the flexibility to interface 4-20mA powered sensors directly to a single 5V system. In addition, the MAX1272 provides fault protection to ±12V. Other features include a 5MHz track/hold (T/H) bandwidth, 87ksps throughput rate, and internal (4.096V) or external (2.40V to 4.18V) reference.

The MAX1272/MAX1273 serial interfaces connect directly to SPI™/QSPI™/MICROWIRE™-compatible devices without any external logic.

Four software-programmable power-down modes (delayed standby, immediate standby, delayed full power-down, and immediate full power-down) provide low-current shutdown between conversions. In standby mode, the internal reference buffer remains active, thus eliminating startup delay.

The MAX1272/MAX1273 are available in an 8-pin PDIP package. Both devices are available in the commercial (0°C to +70°C) or extended (-40°C to +85°C) temperature range.

An evaluation kit is available:  MAX1272EVSYS  

Key Features   Applications/Uses
  • Four Software-Selectable Input Ranges
    • MAX1272: 0 to 10V, 0 to 5V, ±10V, ±5V
    • MAX1273: 0 to VREF, 0 to VREF / 2, ±VREF, ±VREF / 2
  • 12-Bit Resolution, No Missing Codes
  • 5V Single-Supply Operation
  • SPI/QSPI/MICROWIRE-Compatible 3-Wire Interface
  • 87ksps Sampling Rate
  • ±12V Fault-Protected Analog Input (MAX1272)
  • Internal (4.096V) or External (2.4V to 4.18V) Reference
  • Low Power
    • 1.5mA at 87ksps
    • 0.4mA at 10ksps
    • 0.2mA at 1ksps
  • Four Power-Down Modes
  • 8-Pin PDIP Package

 
  		• Automatic Testing
  		• Battery-Powered Instruments
  		• Data Acquisition Systems
  		• Industrial Control Systems
  		• Medical Instruments
  		• Robotics

    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
    MAX1272  12 1 87 8.57 Serial
    Ext.
    Int.+4.096
    ±5
    ±10
    0 to 10
    0 to 5
    		 No 5 2.2 11 Yes
    PDIP(N)/8
    		 $6.98 @1k
    MAX1273  -
    PDIP(N)/8
    		 $6.98 @1k
    See All Precision ADCs (< 5Msps) (377)

    Diagram
    MAX1272, MAX1273: Typical Operating Circuit
    Typical Operating Circuit

    Evaluation Kits
  		• MAX1272EVSYS

    Reliability Reports
  		• Show FIT data for:
  		• Request Reliability Report for:

    Software/Models
    none

    Ordering Information
    Notes:

    1. Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
    2. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
    3. Part number suffixes: T or T&R = tape and reel;+ = RoHS/lead-free;# = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
    4. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.


    Devices: 1-8 of 8

    MAX1272 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX1272CPA+  
    		Active PDIP(N);8 pin;80 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P8+1*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX1272CPA    
    		Active PDIP(N);8 pin;80 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P8-1*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX1272EPA+    
    		Active PDIP(N);8 pin;80 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P8+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX1272EPA    
    		Active PDIP(N);8 pin;80 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P8-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX1273 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX1273CPA+  
    		Active PDIP(N);8 pin;80 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P8+1*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX1273CPA    
    		Active PDIP(N);8 pin;80 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P8-1*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX1273EPA+    
    		Active PDIP(N);8 pin;80 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P8+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX1273EPA    
    		Active PDIP(N);8 pin;80 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P8-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis

    More Information
  		• New Product Press Release 2003-07-28 

    Related Products
    MAX1270, MAX1270A, MAX1270B, MAX1271, MAX1271A, MAX1271B Multirange, +5V, 8-Channel, Serial 12-Bit ADCs

    More Like This: View Product Families for Similar Products

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    Document Ref.: 19-2921; Rev 2; 2004-06-04
    This page last modified: 2007-08-15


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