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Maxim > Products > [Analog-to-Digital Converters] 
MAX197
Multi-Range (±10V, ±5V, +10V, +5V), Single +5V, 12-Bit DAS with 8+4 Bus Interface

±17V Fault-Protected ADC with Software-Selectable Input Ranges


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Status
Active: In Production.

Data Sheet
FULL DATA SHEET (PDF, 616kB)
Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail

Description
The MAX197 multi-range, 12-bit data-acquisition system (DAS) requires only a single +5V supply for operation, yet accepts signals at its analog inputs that may span both above the power-supply rail and below ground. This system provides 8 analog input channels that are independently software programmable for a variety of ranges: ±10V, ±5V, 0V to +10V, or 0V to +5V. This increases effective dynamic range to 14 bits, and provides the user flexibility to interface 4mA-to-20mA, ±12V, and ±15V powered sensors to a single +5V system. In addition, the converter is overvoltage tolerant to ±16.5V; a fault condition on any channel does not affect the conversion result of the selected channel. Other features include a 5MHz bandwidth track/hold, a 100ksps throughput rate, software-selectable internal or external clock and acquisition, 8+4 parallel interface, and an internal 4.096V or an external reference.

A hardware active-low SHDN pin and two programmable power-down modes (STBYPD, FULLPD) are provided for low-current shutdown between conversions. In STBYPD mode, the reference buffer remains active, eliminating start-up delays.

The MAX197 employs a standard microprocessor (µP) interface. A three-state data I/O port is configured to operate with 8-bit data buses, and data-access and bus-release timing specifications are compatible with most popular µPs. All logic inputs and outputs are TTL/CMOS compatible.

The MAX197 is available in 28-pin DIP, wide SO, SSOP, and ceramic SB packages.

For a different combination of ranges (±4V, ±2V, 0V to 4V, 0V to 2V), refer to the MAX199 data sheet. For 12-bit bus interface, refer to the MAX196 and MAX198 data sheets.

An evaluation kit is available:  MAX197EVKIT  

Key Features   Applications/Uses
  • 12-Bit Resolution, 1/2LSB Linearity
  • Single +5V Operation
  • Software-Selectable Input Ranges: ±10V, ±5V, 0V to 10V, 0V to 5V
  • Fault-Protected Input Multiplexer (±16.5V)
  • 8 Analog Input Channels
  • 6µs Conversion Time, 100ksps Sampling Rate
  • Internal or External Acquisition Control
  • Internal 4.096V or External Reference
  • Two Power-Down Modes
  • Internal or External Clock
 

Diagram
MAX197: Functional Diagram
Functional Diagram

Application Notes
  • Application Note 270: Analog-Signal Data Acquisition in Industrial Automation Systems - MAX197
  • Application Note 3450: Positive Analog Feedback Compensates PT100 Transducer - MAX197

    • Evaluation Kits
  • MAX197EVKIT

    • 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: 1-45 of 45

    MAX197 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX197BMYI    
    		Active

    Land Pattern: Not Available

    		See data sheet
    MAX197EVC16-DIP    
    		Active

    Land Pattern: Not Available

    		See data sheet
    MAX197EVC32-DIP    
    		Active

    Land Pattern: Not Available

    		See data sheet
    MAX197BC/D    
    		Active

    Land Pattern: Not Available

    		See data sheet
    MAX197ACNI    
    		Active PDIP(N);28 pin;289.5 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: N28-4*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX197BCNI    
    		Active PDIP(N);28 pin;289.5 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: N28-4*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX197ACNI+  
    		Active PDIP(N);28 pin;289.5 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: N28+4*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX197BCNI+  
    		Active PDIP(N);28 pin;289.5 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: N28+4*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX197AENI    
    		Active PDIP(N);28 pin;289.5 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: N28-4*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX197BENI    
    		Active PDIP(N);28 pin;289.5 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: N28-4*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX197AENI+  
    		Active PDIP(N);28 pin;289.5 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: N28+4*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX197BENI+  
    		Active PDIP(N);28 pin;289.5 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: N28+4*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX197AMYI    
    		Active

    Land Pattern: Not Available

    		-55°C to +125°C See data sheet
    MAX197ACWI    
    		Active SOIC(W);28 pin;192.8 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0109 (PDF)
    Use pkgcode/variation: W28-3*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX197ACWI-T    
    		Active

    Land Pattern: Not Available

    		0°C to +70°C See data sheet
    MAX197BCWI    
    		Active SOIC(W);28 pin;192.8 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0109 (PDF)
    Use pkgcode/variation: W28-3*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX197BCWI-T    
    		Active SOIC(W);28 pin;192.8 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0109 (PDF)
    Use pkgcode/variation: W28-3*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX197ACWI+  
    		Active SOIC(W);28 pin;192.8 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0109 (PDF)
    Use pkgcode/variation: W28+3*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX197ACWI+T    
    		Active SOIC(W);28 pin;192.8 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0109 (PDF)
    Use pkgcode/variation: W28+3*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX197BCWI+  
    		Active SOIC(W);28 pin;192.8 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0109 (PDF)
    Use pkgcode/variation: W28+3*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX197BCWI+T    
    		Active SOIC(W);28 pin;192.8 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0109 (PDF)
    Use pkgcode/variation: W28+3*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX197AEWI    
    		Active SOIC(W);28 pin;192.8 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0109 (PDF)
    Use pkgcode/variation: W28-3*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX197AEWI-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX197BEWI    
    		Active SOIC(W);28 pin;192.8 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0109 (PDF)
    Use pkgcode/variation: W28-3*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX197BEWI-T    
    		Active SOIC(W);28 pin;192.8 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0109 (PDF)
    Use pkgcode/variation: W28-3*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX197AEWI+  
    		Active SOIC(W);28 pin;192.8 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0109 (PDF)
    Use pkgcode/variation: W28+3*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX197AEWI+T    
    		Active SOIC(W);28 pin;192.8 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0109 (PDF)
    Use pkgcode/variation: W28+3*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX197BEWI+  
    		Active SOIC(W);28 pin;192.8 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0109 (PDF)
    Use pkgcode/variation: W28+3*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX197BEWI+T    
    		Active SOIC(W);28 pin;192.8 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0109 (PDF)
    Use pkgcode/variation: W28+3*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX197ACAI    
    		Active SSOP;28 pin;81.6 mm²
    Outline Drawing: 21-0056 (PDF)
    Land Pattern: 90-0095 (PDF)
    Use pkgcode/variation: A28-2*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX197ACAI-T    
    		Active SSOP;28 pin;81.6 mm²
    Outline Drawing: 21-0056 (PDF)
    Land Pattern: 90-0095 (PDF)
    Use pkgcode/variation: A28-2*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX197BCAI    
    		Active SSOP;28 pin;81.6 mm²
    Outline Drawing: 21-0056 (PDF)
    Land Pattern: 90-0095 (PDF)
    Use pkgcode/variation: A28-2*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX197BCAI-T    
    		Active SSOP;28 pin;81.6 mm²
    Outline Drawing: 21-0056 (PDF)
    Land Pattern: 90-0095 (PDF)
    Use pkgcode/variation: A28-2*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX197ACAI+  
    		Active SSOP;28 pin;81.6 mm²
    Outline Drawing: 21-0056 (PDF)
    Land Pattern: 90-0095 (PDF)
    Use pkgcode/variation: A28+2*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX197ACAI+T    
    		Active SSOP;28 pin;81.6 mm²
    Outline Drawing: 21-0056 (PDF)
    Land Pattern: 90-0095 (PDF)
    Use pkgcode/variation: A28+2*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX197BCAI+  
    		Active SSOP;28 pin;81.6 mm²
    Outline Drawing: 21-0056 (PDF)
    Land Pattern: 90-0095 (PDF)
    Use pkgcode/variation: A28+2*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX197BCAI+T    
    		Active SSOP;28 pin;81.6 mm²
    Outline Drawing: 21-0056 (PDF)
    Land Pattern: 90-0095 (PDF)
    Use pkgcode/variation: A28+2*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX197AEAI    
    		Active SSOP;28 pin;81.6 mm²
    Outline Drawing: 21-0056 (PDF)
    Land Pattern: 90-0095 (PDF)
    Use pkgcode/variation: A28-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX197AEAI-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX197BEAI    
    		Active SSOP;28 pin;81.6 mm²
    Outline Drawing: 21-0056 (PDF)
    Land Pattern: 90-0095 (PDF)
    Use pkgcode/variation: A28-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX197BEAI-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX197AEAI+  
    		Active SSOP;28 pin;81.6 mm²
    Outline Drawing: 21-0056 (PDF)
    Land Pattern: 90-0095 (PDF)
    Use pkgcode/variation: A28+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX197AEAI+T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX197BEAI+  
    		Active SSOP;28 pin;81.6 mm²
    Outline Drawing: 21-0056 (PDF)
    Land Pattern: 90-0095 (PDF)
    Use pkgcode/variation: A28+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX197BEAI+T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet

    Related Products
    MAX199 8-Channel, Multi-Range, 5V, 12-Bit DAS with 8+4 Bus Interface and Fault Protection
    MAX196, MAX198 6-Channel, Multirange, 5V, 12-Bit DAS with 12-Bit Bus Interface and Fault Protection
    MAX127, MAX127A, MAX127B, MAX128, MAX128A, MAX128B Multirange, +5V, 12-Bit DAS with 2-Wire Serial Interface
    MAX1270, MAX1270A, MAX1270B, MAX1271, MAX1271A, MAX1271B Multirange, +5V, 8-Channel, Serial 12-Bit ADCs

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    Document Ref.: 19-0381; Rev 2; 2002-09-13
    This page last modified: 2009-07-30


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