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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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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.

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

 
  		• Automated Test Equipment (ATE)
  		• Data Acquisition
  		• Industrial Controls Systems
  		• Medical Instruments
  		• Robotics
  		• Telecommunications

    Key Specifications:   Precision ADCs (< 5Msps)
    Part Number ADC Resolution (Bits) Input Channels Conv. Rate (ksps) Max. Conv. Time (µs) Data Bus (Bits) Ref. (V) Input Range (V) Diff. In Supply Voltage (V) Typ. Supply Current (mA) Typ. Power (mW) Standby Mode Package Price**
    MAX197  12 8 100 6 µP/8 Ext.
    Int.+4.096     		±5
    ±10
    5
    10     		No 5 6 30 Yes PDIP(N)/28
    SOIC(W)/28
    SSOP/28     		$9.90 @ 1k
    See All Precision ADCs (< 5Msps) (375)
    Notes:
    **This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

    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

    Design Guides
  		• A/D Converters (PDF)

    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
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX197EVC32-DIP    


    Land Pattern: Not Available

    		See data sheet
    MAX197BMYI  


    Land Pattern: Not Available

    		See data sheet
    MAX197AMYI    


    Land Pattern: Not Available

    		-55°C to +125°C See data sheet
    MAX197BC/D    


    Land Pattern: Not Available

    		See data sheet
    MAX197EVC16-DIP    


    Land Pattern: Not Available

    		See data sheet
    MAX197ACNI+  
    		PDIP(N);28 pin;290 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
    MAX197ACNI    
    		PDIP(N);28 pin;290 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    
    		PDIP(N);28 pin;290 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+  
    		PDIP(N);28 pin;290 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
    MAX197BENI+  
    		PDIP(N);28 pin;290 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    
    		PDIP(N);28 pin;290 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    
    		PDIP(N);28 pin;290 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+  
    		PDIP(N);28 pin;290 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
    MAX197BCWI+  
    		SOIC(W);28 pin;193 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+  
    		SOIC(W);28 pin;193 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    
    		SOIC(W);28 pin;193 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    
    		SOIC(W);28 pin;193 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    
    		SOIC(W);28 pin;193 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    
    		SOIC(W);28 pin;193 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    
    		SOIC(W);28 pin;193 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    
    		SOIC(W);28 pin;193 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
    MAX197BEWI+  
    		SOIC(W);28 pin;193 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+  
    		SOIC(W);28 pin;193 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    
    		SOIC(W);28 pin;193 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    
    		SOIC(W);28 pin;193 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    
    		SOIC(W);28 pin;193 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    
    		SOIC(W);28 pin;193 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    
    		SOIC(W);28 pin;193 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    
    		SOIC(W);28 pin;193 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
    MAX197ACAI    
    		SSOP;28 pin;82 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    
    		SSOP;28 pin;82 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+  
    		SSOP;28 pin;82 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    
    		SSOP;28 pin;82 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    
    		SSOP;28 pin;82 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    
    		SSOP;28 pin;82 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+  
    		SSOP;28 pin;82 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    
    		SSOP;28 pin;82 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    
    		SSOP;28 pin;82 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    
    		SSOP;28 pin;82 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+  
    		SSOP;28 pin;82 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+  
    		SSOP;28 pin;82 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    
    		SSOP;28 pin;82 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    
    		SSOP;28 pin;82 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    
    		SSOP;28 pin;82 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    
    		SSOP;28 pin;82 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

    Related Products
    MAX199 8-Channel, Multi-Range, 5V, 12-Bit DAS with 8+4 Bus Interface and Fault Protection
    MAX196, MAX198 6-Channel, Multi-Range, 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: 2007-06-06


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