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Maxim > Products > [Analog-to-Digital Converters] 
MAX1144, MAX1145
14-Bit ADCs, 150ksps, 3.3V Single Supply


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Status
Active: In Production.

Data Sheet
FULL DATA SHEET (PDF, 1.6MB)
Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail

Description
The MAX1144/MAX1145 are 150ksps, 14-bit ADCs. These serially interfaced ADCs connect directly to SPI™, QSPI™, and MICROWIRE™ devices without external logic. They combine an input scaling network, internal track/hold, clock, and three general-purpose digital output pins (for external multiplexer or PGA control) in a 20-pin SSOP package. The excellent dynamic performance (THD > 90dB), high speed (150ksps in bipolar mode), and low power (8.0mA) of these ADCs make them ideal for applications such as industrial process control, instrumentation, and medical applications.

The MAX1144 accepts input signals of 0 to +6V (unipolar) or ±6V (bipolar), while the MAX1145 accepts input signals of 0 to +2.048V (unipolar) or ±2.048V (bipolar). Operating from a single 3.135V to 3.465V analog digital supply, powerdown modes reduce current consumption to 0.15mA at 10ksps and further reduce supply current to less than 20µA slower data rates.

A serial strobe output (SSTRB) allows direct connection to the TMS320 family digital-signal processors. The MAX1144/MAX1145 user can select either the internal clock or an external serial-interface clock for the ADC to perform analog-to-digital conversions.

The MAX1144/MAX1145 feature internal calibration circuitry to correct linearity and offset errors. On-demand calibration allows the user to optimize performance. Three user-programmable logic outputs are provided for the control of an 8-channel mux or PGA.

The MAX1144/MAX1145 are available in a 20-pin SSOP package and are fully specified over the -40°C to +85°C temperature range.

Key Features   Applications/Uses
  • 150ksps (Bipolar) and 125ksps (Unipolar) Sampling ADC
  • 14 Bits, No Missing Codes
  • 1 LSB INL Guaranteed
  • -100dB THD
  • 3.3V Single-Supply Operation
  • Low-Power Operation
    • 5mA typ (Unipolar Mode)
  • 1.2µA Shutdown Mode
  • Software-Configurable Unipolar and Bipolar Input Ranges
    • 0 to +6V and ±6V (MAX1144)
    • 0 to +2.048V and ±2.048V (MAX1145)
  • Internal or External Clock
  • SPI/QSPI/MICROWIRE TMS320-Compatible Serial Interface
  • Three User-Programmable Logic Outputs
  • Small 20-Pin SSOP Package

 
  		• Data Acquisition
  		• Industrial I/O Modules
  		• Industrial Process Controls
  		• Medical Instruments
  		• Portable Battery-Powered Equipment

    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
    MAX1144  14 1 150 8.9 Serial Ext. ±6 No 3.3 8 26.4 Yes
    SSOP/20
    		 $14.95 @1k
    MAX1145  ±2.048
    SSOP/20
    		 $14.95 @1k
    See All Precision ADCs (< 5Msps) (377)

    Diagram
    MAX1144, MAX1145: Typical Application Circuit
    Typical Application Circuit

    Application Notes
  		• Application Note 1948: Analysis of ADC System Distortion Caused by Source Resistance - MAX1144, MAX1145

    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: 1-32 of 32

    MAX1144 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX1144ACAP    
    		Active SSOP;20 pin;57.9 mm²
    Outline Drawing: 21-0056 (PDF)
    Land Pattern: 90-0094 (PDF)
    Use pkgcode/variation: A20-2*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX1144ACAP-T    
    		Active

    Land Pattern: Not Available

    		0°C to +70°C See data sheet
    MAX1144BCAP    
    		Active SSOP;20 pin;57.9 mm²
    Outline Drawing: 21-0056 (PDF)
    Land Pattern: 90-0094 (PDF)
    Use pkgcode/variation: A20-2*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX1144BCAP-T    
    		Active

    Land Pattern: Not Available

    		0°C to +70°C See data sheet
    MAX1144ACAP+    
    		Active SSOP;20 pin;57.9 mm²
    Outline Drawing: 21-0056 (PDF)
    Land Pattern: 90-0094 (PDF)
    Use pkgcode/variation: A20+2*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX1144ACAP+T    
    		Active

    Land Pattern: Not Available

    		0°C to +70°C See data sheet
    MAX1144BCAP+  
    		Active SSOP;20 pin;57.9 mm²
    Outline Drawing: 21-0056 (PDF)
    Land Pattern: 90-0094 (PDF)
    Use pkgcode/variation: A20+2*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX1144BCAP+T    
    		Active

    Land Pattern: Not Available

    		0°C to +70°C See data sheet
    MAX1144AEAP    
    		Active SSOP;20 pin;57.9 mm²
    Outline Drawing: 21-0056 (PDF)
    Land Pattern: 90-0094 (PDF)
    Use pkgcode/variation: A20-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX1144AEAP-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX1144BEAP    
    		Active SSOP;20 pin;57.9 mm²
    Outline Drawing: 21-0056 (PDF)
    Land Pattern: 90-0094 (PDF)
    Use pkgcode/variation: A20-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX1144BEAP-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX1144AEAP+  
    		Active SSOP;20 pin;57.9 mm²
    Outline Drawing: 21-0056 (PDF)
    Land Pattern: 90-0094 (PDF)
    Use pkgcode/variation: A20+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX1144AEAP+T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX1144BEAP+  
    		Active SSOP;20 pin;57.9 mm²
    Outline Drawing: 21-0056 (PDF)
    Land Pattern: 90-0094 (PDF)
    Use pkgcode/variation: A20+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX1144BEAP+T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX1145 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX1145ACAP    
    		Active SSOP;20 pin;57.9 mm²
    Outline Drawing: 21-0056 (PDF)
    Land Pattern: 90-0094 (PDF)
    Use pkgcode/variation: A20-2*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX1145ACAP-T    
    		Active

    Land Pattern: Not Available

    		0°C to +70°C See data sheet
    MAX1145BCAP    
    		Active SSOP;20 pin;57.9 mm²
    Outline Drawing: 21-0056 (PDF)
    Land Pattern: 90-0094 (PDF)
    Use pkgcode/variation: A20-2*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX1145BCAP-T    
    		Active SSOP;20 pin;57.9 mm²
    Outline Drawing: 21-0056 (PDF)
    Land Pattern: 90-0094 (PDF)
    Use pkgcode/variation: A20-2*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX1145ACAP+    
    		Active SSOP;20 pin;57.9 mm²
    Outline Drawing: 21-0056 (PDF)
    Land Pattern: 90-0094 (PDF)
    Use pkgcode/variation: A20+2*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX1145ACAP+T    
    		Active

    Land Pattern: Not Available

    		0°C to +70°C See data sheet
    MAX1145BCAP+  
    		Active SSOP;20 pin;57.9 mm²
    Outline Drawing: 21-0056 (PDF)
    Land Pattern: 90-0094 (PDF)
    Use pkgcode/variation: A20+2*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX1145BCAP+T    
    		Active

    Land Pattern: Not Available

    		0°C to +70°C See data sheet
    MAX1145AEAP    
    		Active SSOP;20 pin;57.9 mm²
    Outline Drawing: 21-0056 (PDF)
    Land Pattern: 90-0094 (PDF)
    Use pkgcode/variation: A20-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX1145AEAP-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX1145BEAP    
    		Active SSOP;20 pin;57.9 mm²
    Outline Drawing: 21-0056 (PDF)
    Land Pattern: 90-0094 (PDF)
    Use pkgcode/variation: A20-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX1145BEAP-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX1145AEAP+    
    		Active SSOP;20 pin;57.9 mm²
    Outline Drawing: 21-0056 (PDF)
    Land Pattern: 90-0094 (PDF)
    Use pkgcode/variation: A20+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX1145AEAP+T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX1145BEAP+  
    		Active SSOP;20 pin;57.9 mm²
    Outline Drawing: 21-0056 (PDF)
    Land Pattern: 90-0094 (PDF)
    Use pkgcode/variation: A20+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX1145BEAP+T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet

    Related Products
    MAX1142, MAX1143 14-Bit ADC, 200ksps, +5V Single-Supply with Reference
    MAX1132, MAX1133 16-Bit ADC, 200ksps, 5V Single-Supply with Reference
    MAX1134, MAX1135 16-Bit ADCs, 150ksps, 3.3V Single Supply

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    Document Ref.: 19-2465; Rev 0; 2002-05-22
    This page last modified: 2008-03-11


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