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Maxim > Products > [Analog-to-Digital Converters] 
MAX1276, MAX1278
1.8Msps, Single-Supply, Low-Power, True-Differential, 12-Bit ADCs with Internal Reference


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Status
Part Number Status
MAX1276 Active: In Production. But some versions of the family are No Longer Available. See Ordering Information.
MAX1278 Active: In Production. But some versions of the family are No Longer Available. See Ordering Information.

Data Sheet
FULL DATA SHEET (PDF, 664kB)
Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail

Description
The MAX1276/MAX1278 are low-power, high-speed, serial-output, 12-bit, analog-to-digital converters (ADCs) that operate at up to 1.8Msps and have an internal reference. These devices feature true-differential inputs, offering better noise immunity, distortion improvements, and a wider dynamic range over single-ended inputs. A standard SPI™/QSPI™/MICROWIRE™ interface provides the clock necessary for conversion. These devices easily interface with standard digital signal processor (DSP) synchronous serial interfaces.

The MAX1276/MAX1278 operate from a single +4.75V to +5.25V supply voltage. The MAX1276/MAX1278 include a 4.096V internal reference. The MAX1276 has a unipolar analog input, while the MAX1278 has a bipolar analog input. These devices feature a partial power-down mode and a full power-down mode for use between conversions, which lower the supply current to 2mA (typ) and 1µA (max), respectively. Also featured is a separate power-supply input (VL), which allows direct interfacing to +1.8V to VDD digital logic. The fast conversion speed, low-power dissipation, excellent AC performance, and DC accuracy (±1.25 LSB INL) make the MAX1276/MAX1278 ideal for industrial process control, motor control, and base-station applications.

The MAX1276/MAX1278 come in a 12-pin TQFN package, and are available in the extended (-40°C to +85°C) temperature range.

An evaluation kit is available:  MAX1276EVKIT  

Key Features   Applications/Uses
  • 1.8Msps Sampling Rate
  • Only 55mW (typ) Power Dissipation
  • Only 1µA (max) Shutdown Current
  • High-Speed, SPI-Compatible, 3-Wire Serial Interface
  • 70dB S/(N + D) at 525kHz Input Frequency
  • Internal True-Differential Track/Hold (T/H)
  • Internal 4.096V Reference
  • No Pipeline Delays
  • Small 12-Pin TQFN Package

 
  		• Bill Validation
  		• Communications
  		• Data Acquisition
  		• Motor Control
  		• Portable Instrumentation

    Key Specifications:  Precision ADCs (< 5Msps)
    Part Number Resolution
    (bits)    		 Input Chan. Conv. Rate
    (ksps)    		 Conv. Time
    (µs)    		 Data Bus
    (bits)    		 Ref.
    (V)    		 Diff. Inputs VSUPPLY
    (V)    		 ICC
    (mA)    		 Power
    (mW)    		 Standby Mode Package/Pins Price
    ADC max typ typ See Notes
    MAX1276  12 1 1800 0.556 Serial
    Ext.
    Int.+4.096
    		 Yes 5 11 55 Yes
    TQFN/12
    		 $3.99 @1k
    MAX1278 
    TQFN/12
    		 $3.99 @1k
    See All Precision ADCs (< 5Msps) (377)

    Diagram
    MAX1276, MAX1278: Typical Operating Circuit
    Typical Operating Circuit

    Application Notes
  		• Application Note 4442: Logarithmic LED Panel Display Has 72dB Range - MAX1276
  		• Application Note 4620: Set Your Holiday Lights to Music - MAX1276

    Evaluation Kits
  		• MAX1276EVKIT

    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: 1-17 of 17

    MAX1276 Free
    Sample    		 Buy Status Recommended Replacement
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX1276EVC16    
    		Active


    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX1276CTC     N/A No Longer Available MAX1276ETC
    		 TQFN;12 pin;17 mm²
    Outline Drawing: 21-0139 (PDF)
    Land Pattern: 90-0067 (PDF)
    Use pkgcode/variation: T1244-3*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX1276CTC-T     N/A No Longer Available MAX1276ETC

    Land Pattern: Not Available

    		0°C to +70°C See data sheet
    MAX1276CTC+     N/A No Longer Available MAX1276ETC+
    		 TQFN;12 pin;17 mm²
    Outline Drawing: 21-0139 (PDF)
    Land Pattern: 90-0067 (PDF)
    Use pkgcode/variation: T1244+3*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX1276CTC+T     N/A No Longer Available MAX1276ETC+

    Land Pattern: Not Available

    		0°C to +70°C See data sheet
    MAX1276ETC    
    		Active
    		TQFN;12 pin;17 mm²
    Outline Drawing: 21-0139 (PDF)
    Land Pattern: 90-0067 (PDF)
    Use pkgcode/variation: T1244-3*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX1276ETC-T    
    		Active


    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX1276ETC+  
    		Active
    		TQFN;12 pin;17 mm²
    Outline Drawing: 21-0139 (PDF)
    Land Pattern: 90-0067 (PDF)
    Use pkgcode/variation: T1244+3*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX1276ETC+T    
    		Active


    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX1278 Free
    Sample    		 Buy Status Recommended Replacement
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX1278CTC     N/A No Longer Available MAX1278ETC
    		 TQFN;12 pin;17 mm²
    Outline Drawing: 21-0139 (PDF)
    Land Pattern: 90-0067 (PDF)
    Use pkgcode/variation: T1244-3*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX1278CTC-T     N/A No Longer Available MAX1278ETC

    Land Pattern: Not Available

    		0°C to +70°C See data sheet
    MAX1278CTC+     N/A No Longer Available MAX1278ETC+
    		 TQFN;12 pin;17 mm²
    Outline Drawing: 21-0139 (PDF)
    Land Pattern: 90-0067 (PDF)
    Use pkgcode/variation: T1244+3*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX1278CTC+T     N/A No Longer Available MAX1278ETC+

    Land Pattern: Not Available

    		0°C to +70°C See data sheet
    MAX1278ETC    
    		Active
    		TQFN;12 pin;17 mm²
    Outline Drawing: 21-0139 (PDF)
    Land Pattern: 90-0067 (PDF)
    Use pkgcode/variation: T1244-3*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX1278ETC-T    
    		Active


    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX1278ETC+  
    		Active
    		TQFN;12 pin;17 mm²
    Outline Drawing: 21-0139 (PDF)
    Land Pattern: 90-0067 (PDF)
    Use pkgcode/variation: T1244+3*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX1278ETC+T    
    		Active


    Land Pattern: Not Available

    		-40°C to +85°C See data sheet

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    Document Ref.: 19-3364; Rev 1; 2009-08-06
    This page last modified: 2009-08-06


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