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Maxim > Products > [Digital-to-Analog Converters]  [Analog-to-Digital Converters]  [Digital Potentiometers] 
MAX1221, MAX1223, MAX1343
12-Bit, Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports


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Data Sheet
FULL DATA SHEET (PDF, 560kB)
Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail

Description
The MAX1221/MAX1223/MAX1343 integrate a multichannel, 12-bit, analog-to-digital converter (ADC) and a 12-bit, digital-to-analog converter (DAC) in a single IC. The devices also include a temperature sensor and configurable general-purpose I/O ports (GPIOs) with a 25MHz SPI™-/QSPI™-/MICROWIRE™-compatible serial interface. The ADC is available in a 12 or an eight input-channel version. The DAC outputs settle within 2.0µs, and the ADC has a 225ksps conversion rate.

All devices include an internal reference (2.5V) providing a well-regulated, low-noise reference for both the ADC and DAC. Programmable reference modes for the ADC and DAC allow the use of an internal reference, an external reference, or a combination of both. Features such as an internal ±1°C accurate temperature sensor, FIFO, scan modes, programmable internal or external clock modes, data averaging, and AutoShutdown™ allow users to minimize both power consumption and processor requirements. The low glitch energy (4nV•s) and low digital feedthrough (0.5nV•s) of the integrated DACs make these devices ideal for digital control of fast-response closed-loop systems.

The devices are guaranteed to operate with a supply voltage from +2.7V to +5.25V. The devices consume 2.5mA at 225ksps throughput, only 22µA at 1ksps throughput, and under 0.2µA in the shutdown mode. The MAX1221/MAX1343 offer four GPIOs that can be configured as inputs or outputs.

The MAX1221/MAX1223/MAX1343 are available in 36-pin thin QFN packages. All devices are specified over the -40°C to +85°C temperature range.

Key Features   Applications/Uses
  • 12-Bit, 225ksps ADC
    • Analog Multiplexer with True-Differential Track/Hold (T/H)
    • 12 Single-Ended Channels or Six Differential Channels (Unipolar or Bipolar) (MAX1223)
    • Eight Single-Ended Channels or Four Differential Channels (Unipolar or Bipolar) (MAX1221/MAX1343)
    • Excellent Accuracy: ±0.5 LSB INL, ±0.5 LSB DNL
  • 12-Bit, Octal, 2µs Settling DAC (MAX1221/MAX1223)
    • Ultra-Low Glitch Energy (4nV•s)
    • Power-Up Options from Zero Scale or Full Scale
    • Excellent Accuracy: ±0.5 LSB INL
  • Internal Reference or External Single-Ended/Differential Reference
    • Internal Reference Voltage 2.5V
  • Internal ±1°C Accurate Temperature Sensor
  • On-Chip FIFO Capable of Storing 16 ADC Conversion Results and One Temperature Result
  • On-Chip Channel-Scan Mode and Internal Data-Averaging Features
  • Analog Single-Supply Operation
    • +2.7V to +5.25V
  • 2.7V to AVDD Digital Supply
  • 25MHz, SPI/QSPI/MICROWIRE Serial Interface
  • AutoShutdown Between Conversions
  • Low-Power ADC
    • 2.5mA at 225ksps
    • 22µA at 1ksps
    • 0.2µA at Shutdown
  • Low-Power DAC: 1.5mA
  • Evaluation Kit Available (Order MAX1258EVKIT)

 
  		• Closed-Loop Controls for Optical Components and Base Stations
  		• Data Acquisition Systems
  		• System Supervision and Control

    Evaluation Kits
    none

    Design Guides
  		• A/D Converters (PDF)
  		• D/A Converters (PDF)
  		• Digital Potentiometers (PDF)

    Reliability Reports
  		• Reliability Report: MAX1221.pdf
  		• 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: 1-10 of 10

    MAX1221 Free
    Sample    		 Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX1221BETX  
    		TQFN;36 pin;37 mm²
    Outline Drawing: 21-0141 (PDF)
    Land Pattern: 90-0050 (PDF)
    Use pkgcode/variation: T3666-3*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX1221BETX+T  
    		TQFN;36 pin;37 mm²
    Outline Drawing: 21-0141 (PDF)
    Land Pattern: 90-0050 (PDF)
    Use pkgcode/variation: T3666+3*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX1221BETX+  
    		TQFN;36 pin;37 mm²
    Outline Drawing: 21-0141 (PDF)
    Land Pattern: 90-0050 (PDF)
    Use pkgcode/variation: T3666+3*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX1221BETX-T  


    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX1223 Free
    Sample    		 Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX1223BETX  
    		TQFN;36 pin;37 mm²
    Outline Drawing: 21-0141 (PDF)
    Land Pattern: 90-0050 (PDF)
    Use pkgcode/variation: T3666-3*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX1223BETX-T  


    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX1343 Free
    Sample    		 Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX1343BETX  
    		TQFN;36 pin;37 mm²
    Outline Drawing: 21-0141 (PDF)
    Land Pattern: 90-0050 (PDF)
    Use pkgcode/variation: T3666-3*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX1343BETX-T  


    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX1343BETX+  
    		TQFN;36 pin;37 mm²
    Outline Drawing: 21-0141 (PDF)
    Land Pattern: 90-0050 (PDF)
    Use pkgcode/variation: T3666+3*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX1343BETX+T  
    		TQFN;36 pin;37 mm²
    Outline Drawing: 21-0141 (PDF)
    Land Pattern: 90-0050 (PDF)
    Use pkgcode/variation: T3666+3*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis

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    Document Ref.: 19-4010; Rev 1; 2008-03-25
    This page last modified: 2008-04-01


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