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Maxim > Products > [Analog-to-Digital Converters] 
MAX1146, MAX1147, MAX1148, MAX1149
Multichannel, True-Differential, Serial, 14-Bit ADCs


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Status
Active: In Production.

Data Sheet
FULL DATA SHEET (PDF, 292kB)
Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail

Description
The MAX1146–MAX1149 low-power, 14-bit, multichannel, analog-to-digital converters (ADCs) feature an internal track/hold (T/H), voltage reference, and clock. The MAX1146/MAX1148 operate from a single +4.75V to +5.25V supply, and the MAX1147/MAX1149 operate from a single +2.7V to +3.6V supply. All analog inputs are software configurable for unipolar/bipolar and single-ended/differential operation.

The 4-wire serial interface connects directly to SPI™/QSPI™/MICROWIRE™ devices without external logic. The serial strobe output (SSTRB) allows convenient connection to digital signal processors. The MAX1146–MAX1149 use an internal clock or an external serial-interface clock to perform successive-approximation analog-to-digital conversions.

The MAX1146/MAX1148 include an internal +4.096V reference, while the MAX1147/MAX1149 include an internal +2.500V reference. All devices accept an external reference from 1.5V to VDD.

The MAX1146–MAX1149 provide a hardware shutdown and two software power-down modes. Using the software power-down modes allows the devices to be powered down between conversions. When powered down, accessing the serial interface automatically powers up the devices. The quick turn-on time allows power-down between all conversions. This technique reduces supply current to under 120µA for quick turn-on. The MAX1146–MAX1149 are available in a 20-pin TSSOP package.

An evaluation kit is available:  MAX1149EVCMODU, MAX1149EVKIT  

NOTE: This product requires use of the following:

  • MAX1149 EVKIT Software

    Key Features   Applications/Uses
    • 8-Channel Single-Ended or 4-Channel Differential Inputs (MAX1148/MAX1149)
    • 4-Channel Single-Ended or 2-Channel Differential Inputs (MAX1146/MAX1147)
    • Internal Multiplexer and T/H
    • Single-Supply Operation
      • 4.75V to 5.25V Supply (MAX1146/MAX1148)
      • 2.7V to 3.6V Supply (MAX1147/MAX1149)
    • Internal Reference
      • +4.096V (MAX1146/MAX1148)
      • +2.500V (MAX1147/MAX1149)
    • 116ksps Sampling Rate
    • Low Power
      • 1.1mA (116ksps)
      • 120µA (10ksps)
      • 12µA (1ksps)
      • 300nA (Power-Down Mode)
    • SPI-/QSPI-/MICROWIRE Compatible
    • 20-Pin TSSOP

    		 
  		• Battery-Powered Instruments
  		• Data Acquisition
  		• Medical Instruments
  		• Portable Data Logging
  		• Process Control

    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
    MAX1146  14 4 116 7.2 Serial
    Ext.
    Int.+4.096
    		 Yes 5 1.1 5.5 Yes
    TSSOP/20
    		 $7.78 @1k
    MAX1147  4
    Ext.
    Int.+2.5
    3
    3.3
    		 3.3
    TSSOP/20
    		 $7.78 @1k
    MAX1148  8
    Ext.
    Int.+4.096
    		 5 5.5
    TSSOP/20
    		 $8.55 @1k
    MAX1149  8
    Ext.
    Int.+2.5
    3
    3.3
    		 3.3
    TSSOP/20
    		 $8.55 @1k
    See All Precision ADCs (< 5Msps) (377)

    Diagram
    MAX1146, MAX1147, MAX1148, MAX1149: Pin Configuration
    Pin Configuration

    Evaluation Kits
  		• MAX1149EVCMODU, MAX1149EVKIT

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

    Software/Models
  		• MAX1149 EVKIT Software

    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: 1-30 of 30

    MAX1146 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX1146BCUP    
    		Active TSSOP;20 pin;45 mm²
    Outline Drawing: 21-0066 (PDF)
    Land Pattern: 90-0116 (PDF)
    Use pkgcode/variation: U20-3*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX1146BCUP-T    
    		Active

    Land Pattern: Not Available

    		0°C to +70°C See data sheet
    MAX1146BCUP+  
    		Active TSSOP;20 pin;45 mm²
    Outline Drawing: 21-0066 (PDF)
    Land Pattern: 90-0116 (PDF)
    Use pkgcode/variation: U20+3*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX1146BCUP+T    
    		Active

    Land Pattern: Not Available

    		0°C to +70°C See data sheet
    MAX1146BEUP    
    		Active TSSOP;20 pin;45 mm²
    Outline Drawing: 21-0066 (PDF)
    Land Pattern: 90-0116 (PDF)
    Use pkgcode/variation: U20-3*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX1146BEUP-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX1147 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX1147BCUP    
    		Active TSSOP;20 pin;45 mm²
    Outline Drawing: 21-0066 (PDF)
    Land Pattern: 90-0116 (PDF)
    Use pkgcode/variation: U20-3*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX1147BCUP-T    
    		Active

    Land Pattern: Not Available

    		0°C to +70°C See data sheet
    MAX1147BCUP+  
    		Active TSSOP;20 pin;45 mm²
    Outline Drawing: 21-0066 (PDF)
    Land Pattern: 90-0116 (PDF)
    Use pkgcode/variation: U20+3*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX1147BCUP+T    
    		Active

    Land Pattern: Not Available

    		0°C to +70°C See data sheet
    MAX1147BEUP    
    		Active TSSOP;20 pin;45 mm²
    Outline Drawing: 21-0066 (PDF)
    Land Pattern: 90-0116 (PDF)
    Use pkgcode/variation: U20-3*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX1147BEUP-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX1147BEUP+  
    		Active TSSOP;20 pin;45 mm²
    Outline Drawing: 21-0066 (PDF)
    Land Pattern: 90-0116 (PDF)
    Use pkgcode/variation: U20+3*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX1147BEUP+T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX1148 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX1148BCUP    
    		Active TSSOP;20 pin;45 mm²
    Outline Drawing: 21-0066 (PDF)
    Land Pattern: 90-0116 (PDF)
    Use pkgcode/variation: U20-3*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX1148BCUP-T    
    		Active

    Land Pattern: Not Available

    		0°C to +70°C See data sheet
    MAX1148BCUP+  
    		Active TSSOP;20 pin;45 mm²
    Outline Drawing: 21-0066 (PDF)
    Land Pattern: 90-0116 (PDF)
    Use pkgcode/variation: U20+3*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX1148BCUP+T    
    		Active

    Land Pattern: Not Available

    		0°C to +70°C See data sheet
    MAX1148BEUP    
    		Active TSSOP;20 pin;45 mm²
    Outline Drawing: 21-0066 (PDF)
    Land Pattern: 90-0116 (PDF)
    Use pkgcode/variation: U20-3*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX1148BEUP-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX1148BEUP+  
    		Active TSSOP;20 pin;45 mm²
    Outline Drawing: 21-0066 (PDF)
    Land Pattern: 90-0116 (PDF)
    Use pkgcode/variation: U20+3*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX1148BEUP+T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX1149 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX1149BCUP    
    		Active TSSOP;20 pin;45 mm²
    Outline Drawing: 21-0066 (PDF)
    Land Pattern: 90-0116 (PDF)
    Use pkgcode/variation: U20-3*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX1149BCUP-T    
    		Active

    Land Pattern: Not Available

    		0°C to +70°C See data sheet
    MAX1149BCUP+  
    		Active TSSOP;20 pin;45 mm²
    Outline Drawing: 21-0066 (PDF)
    Land Pattern: 90-0116 (PDF)
    Use pkgcode/variation: U20+3*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX1149BCUP+T    
    		Active

    Land Pattern: Not Available

    		0°C to +70°C See data sheet
    MAX1149BEUP    
    		Active TSSOP;20 pin;45 mm²
    Outline Drawing: 21-0066 (PDF)
    Land Pattern: 90-0116 (PDF)
    Use pkgcode/variation: U20-3*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX1149BEUP-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX1149BEUP+  
    		Active TSSOP;20 pin;45 mm²
    Outline Drawing: 21-0066 (PDF)
    Land Pattern: 90-0116 (PDF)
    Use pkgcode/variation: U20+3*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX1149BEUP+T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet

    More Information
  		• Product Ad: Download

    Related Products
    MAX1246, MAX1247 +2.7V, Low-Power, 4-Channel, Serial 12-Bit ADCs in QSOP-16
    MAX1248, MAX1249 +2.7V to +5.25V, Low-Power, 4-Channel, Serial, 10-Bit ADCs in QSOP-16

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     Key Features 
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    Document Ref.: 19-3488; Rev 2; 2007-02-09
    This page last modified: 2009-10-12


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