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Maxim > Products > [Amplifiers and Comparators] 
MAX492, MAX494, MAX495
Single/Dual/Quad, Micropower, Single-Supply, Rail-to-Rail Op Amps


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Status
Part Number Status
MAX492 Active: In Production.
MAX494 Active: In Production.
MAX495 This product is being discontinued and is subject to Last Time Buy, after which new orders can not be placed. See Ordering Information for recommended replacements.

Data Sheet
FULL DATA SHEET (PDF, 248kB)
Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail

Description
The dual MAX492, quad MAX494, and single MAX495 operational amplifiers combine excellent DC accuracy with rail-to-rail operation at the input and output. Since the common-mode voltage extends from VCC to VEE, the devices can operate from either a single supply (+2.7V to +6V) or split supplies (±1.35V to ±3V). Each op amp requires less than 150µA supply current. Even with this low current, the op amps are capable of driving a 1kΩ load, and the input referred voltage noise is only 25nV/√Hz. In addition, these op amps can drive loads in excess of 1nF.

The precision performance of the MAX492/MAX494/MAX495, combined with their wide input and output dynamic range, low-voltage single-supply operation, and very low supply current, makes them an ideal choice for battery-operated equipment and other low-voltage applications. The MAX492/MAX494/MAX495 are available in DIP and SO packages in the industry-standard op-amp pin configurations. The MAX495 is also available in the smallest 8-pin SO: the µMAX® package.

Key Features   Applications/Uses
  • Low-Voltage Single-Supply Operation (+2.7V to +6V)
  • Rail-to-Rail Input Common-Mode Voltage Range
  • Rail-to-Rail Output Swing
  • 500kHz Gain-Bandwidth Product
  • Unity-Gain Stable
  • 150µA Max Quiescent Current per Op Amp
  • No Phase Reversal for Overdriven Inputs
  • 200µV Offset Voltage
  • High Voltage Gain (108dB)
  • High CMRR (90dB) and PSRR (110dB)
  • Drives 1kΩ Load
  • Drives Large Capacitive Loads
  • MAX495 Available in µMAX Package-8-Pin SO
  • Dual, precision, rail-to-rail input and output (MAX492)
  • Quad, precision, rail-to-rail input and output (MAX494)
  • Single, precision, rail-to-rail input and output (MAX495)

 
  		• Battery-Powered Applications
  		• Data Acquisition
  		• Low-Voltage Applications
  		• Portable Equipment
  		• Signal Conditioning

    Key Specifications:  Operational Amplifiers
    Part Number Amps. Rail to Rail AVCL VSUPPLY (Total)
    (V)    		 VSUPPLY (Total)
    (V)    		 ICC per Amp.
    (µA)    		 ICC per Amp.
    (µA)    		 VOS
    (µV)    		 CMRR @DC
    (dB)    		 PSRR @DC
    (dB)    		 Input IBIAS
    (nA)    		 Unity Gain BW
    (MHz)    		 Slew Rate
    (V/µs)    		 en
    (nV/√Hz)    		 in
    (pA/√Hz)    		 Low Pwr. Shutdn Package/Pins Price
    min min max typ max max typ typ max typ typ See Notes
    MAX492  2 Input/Output 1 2.7 6 150 170 500 90 110 60 0.5 0.2 25 0.1 No
    CDIP(N)/8
    PDIP(N)/8
    SOIC(N)/8
    		 $2.25 @1k
    MAX494  4
    CDIP(N)/14
    PDIP(N)/14
    SOIC(N)/14
    		 $3.60 @1k
    See All Operational Amplifiers (145)

    Application Notes
  		• Application Note 741: Rail-to-Rail Outputs and Beyond-the-Rails Inputs: The Inside Story on Micropower Op Amps - MAX492
  		• Application Note 851: Battery Charger Delivers 2.5A With >96% Efficiency - MAX495
  		• Application Note 899: Low Noise Audio Power Supply Circuit - MAX495
  		• Application Note 930: Synchronous Buck-Regulator Output Terminates High-Speed Data Buses - MAX495
  		• Application Note 1094: Choosing The Optimum Buffer/ADC Combination For Your Application - MAX495
  		• Application Note 3536: Moving-Coil Meter Measures Low-Level Currents - MAX495

    Design Guides
  		• Amplifiers and Sensors (PDF)
  		• Video (PDF)

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

    Software/Models
  		• MAX492 Macromodel

    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

    MAX492 Free
    Sample    		 Buy Status Recommended Replacement
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX492MJA    
    		Active
    		CDIP(N);8 pin;83 mm²
    Outline Drawing: 21-0045 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: J8-2*
    		-55°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX492C/D    
    		Active
    		DICE SALES;NA pin;0 mm²

    Land Pattern: Not Applicable
    Use pkgcode/variation: DICE*
    		See data sheet
    MAX492CPA    
    		Active
    		PDIP(N);8 pin;80 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P8-1*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX492CPA+  
    		Active
    		PDIP(N);8 pin;80 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P8+1*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX492EPA    
    		Active
    		PDIP(N);8 pin;80 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P8-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX492EPA+  
    		Active
    		PDIP(N);8 pin;80 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P8+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX492CSA    
    		Active
    		SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8-4*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX492CSA-T    
    		Active


    Land Pattern: Not Available

    		0°C to +70°C See data sheet
    MAX492CSA+  
    		Active
    		SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8+4*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX492CSA+T    
    		Active
    		SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8+4*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX492ESA    
    		Active
    		SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8-4*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX492ESA-T    
    		Active
    		SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8-4*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX492ESA+  
    		Active
    		SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8+4*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX492ESA+T    
    		Active
    		SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8+4*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX494 Free
    Sample    		 Buy Status Recommended Replacement
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX494MJD    
    		Active
    		CDIP(N);14 pin;162 mm²
    Outline Drawing: 21-0045 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: J14-3*
    		-55°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX494CPD    
    		Active
    		PDIP(N);14 pin;158 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P14-3*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX494CPD+  
    		Active
    		PDIP(N);14 pin;158 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P14+3*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX494EPD    
    		Active
    		PDIP(N);14 pin;158 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P14-3*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX494EPD+  
    		Active
    		PDIP(N);14 pin;158 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P14+3*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX494CSD    
    		Active
    		SOIC(N);14 pin;54 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0112 (PDF)
    Use pkgcode/variation: S14-1*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX494CSD-T    
    		Active
    		SOIC(N);14 pin;54 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0112 (PDF)
    Use pkgcode/variation: S14-1*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX494CSD+  
    		Active
    		SOIC(N);14 pin;54 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0112 (PDF)
    Use pkgcode/variation: S14+1*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX494CSD+T    
    		Active
    		SOIC(N);14 pin;54 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0112 (PDF)
    Use pkgcode/variation: S14+1*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX494ESD    
    		Active
    		SOIC(N);14 pin;54 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0112 (PDF)
    Use pkgcode/variation: S14-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX494ESD-T    
    		Active


    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX494ESD+  
    		Active
    		SOIC(N);14 pin;54 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0112 (PDF)
    Use pkgcode/variation: S14+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX494ESD+T    
    		Active
    		SOIC(N);14 pin;54 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0112 (PDF)
    Use pkgcode/variation: S14+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX495 Free
    Sample    		 Buy Status Recommended Replacement
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX495MJA    
    		Last Time Buy
    		CDIP(N);8 pin;83 mm²
    Outline Drawing: 21-0045 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: J8-2*
    		-55°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX495C/D    
    		Last Time Buy


    Land Pattern: Not Available

    		See data sheet
    MAX495CPA    
    		Last Time Buy
    		PDIP(N);8 pin;80 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P8-1*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX495CPA+    
    		Last Time Buy
    		PDIP(N);8 pin;80 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P8+1*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX495EPA    
    		Last Time Buy
    		PDIP(N);8 pin;80 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P8-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX495EPA+    
    		Last Time Buy
    		PDIP(N);8 pin;80 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P8+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX495CSA    
    		Last Time Buy MAX4091ASA+
    		 SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8-2*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX495CSA-T    
    		Last Time Buy MAX4091ASA+
    		 SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8-2*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX495CSA+    
    		Last Time Buy MAX4091ASA+
    		 SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8+2*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX495CSA+T    
    		Last Time Buy MAX4091ASA+
    		 SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8+2*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX495ESA    
    		Last Time Buy MAX4091ASA+
    		 SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX495ESA-T    
    		Last Time Buy MAX4091ASA+
    		 SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX495ESA+    
    		Last Time Buy MAX4091ASA+
    		 SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX495ESA+T    
    		Last Time Buy MAX4091ASA+
    		 SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX495CUA    
    		Last Time Buy MAX4091AUA+
    		 µMAX;8 pin;16 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8-1*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX495CUA-T    
    		Last Time Buy MAX4091AUA+
    		 µMAX;8 pin;16 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8-1*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX495CUA+T    
    		Last Time Buy MAX4091AUA+

    Land Pattern: Not Available

    		0°C to +70°C See data sheet
    MAX495CUA+    
    		Last Time Buy MAX4091AUA+
    		 µMAX;8 pin;16 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8+1*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis

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    Document Ref.: 19-0265; Rev 2; 1996-09-01
    This page last modified: 2007-07-13


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