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Maxim > Products > [Filters (Analog)]  [Military/Aerospace] 
MAX274, MAX274EVKIT, MAX275
4th- and 8th-Order, Continuous-Time Active Filters

Low-Noise Continuous-Time Filters Eliminate Clock Noise and Aliasing


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Data Sheet
FULL DATA SHEET (PDF, 1.5MB)
Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail

Description
The MAX274 and MAX275 are continuous-time active filters consisting of independent cascadable 2nd-order sections. Each section can implement and all-pole bandpass or lowpass filter response, such as Butterworth, Bessel, Chebyshev, and is programmed by four external resistors. The MAX274/MAX275 provide lower noise that switched-capacitor filters, as well as superior dynamic performance—both due to the continuous-time design. Since continuous-time filters do not require a clock, aliased and clock noise are eliminated with the MAX274/MAX275.

The MAX274 comprises of four 2nd-order sections, permitting 8th-order filters to be realized. Center frequencies range up to 150kHZ, and are accurate to within ±1% over the full operating temperature range. Total harmonic distortion (THD) is typically better than -86dB.

The MAX275 comprises of two 2nd-order sections, permitting 4th-order filters to be realized. Center frequencies range up to 300kHZ, and are accurate to within ±0.9% over the full operating temperature range. Total harmonic distortion (THD) is typically better than -86dB.

Both filters operate from a single +5V supply or from dual ±5V supplies.

Key Features   Applications/Uses
  • Continuous-TIme Filter - No Clock, No Clock Noise
  • Implement Butterworth, Chebyshev, Bessel and Other Filter Responses
  • Lowpass, Bandpass Outputs
  • Operate from a Single +5V Supply or Dual ±5V Supplies
  • Design Software Available
  • MAX274 Evaluation Kit Available
  • 8th-Order-Four 2nd-Order Sections (MAX274)
  • 4th-Order-Two 2nd-Order Sections (MAX275)
  • Center-Frequency Range:
    • 150kHz for MAX274
    • 300kHz for MAX275
  • Low Noise:
    • -86dB THD Typical for MAX274
    • -89dB THD Typical for MAX275
  • Center-Frequency Accurate Over Temp:
    • within ±1% for MAX274
    • within ±0.9% for MAX275

 
  		• Audio/Sonar/Avionics Frequency Filtering
  		• DAC Output-Smoothing Filters
  		• Low-Distortion Anti-Aliasing Filters
  		• Modems
  		• Vibration Analysis

    Key Specifications:   Active Filters
    Part Number Filter Sections per Pkg. Order per Filter Section Filter Class Filter Type Filter Characteristic Program Method Lowest Cutoff (Hz) Highest Cutoff (kHz) Dual Supply Voltage (±V) Supply Voltage (V) Operating Temp. Range (°C) Price**
    MAX274  4 2 Continuous Bandpass
    Lowpass     		Programmable Resistor 100 150 5 5 -55 to +125
    -40 to +85
    0 to +70     		$4.77 @ 1k
    MAX275  2 300 $2.95 @ 1k
    See All Active Filters (50)
    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.

    Diagram
    MAX274, MAX274EVKIT, MAX275: Typical Operating Circuit
    Typical Operating Circuit

    Application Notes
  		• Application Note 63: Add Digital Adjustment To Continuous-Time Filters - MAX275
  		• Application Note 76: Remove DC Offset From Lowpass Filters - MAX274
  		• Application Note 928: Filter Basics: Anti-Aliasing - MAX274, MAX275
  		• Application Note 1762: A Beginners Guide to Filter Topologies - MAX274, MAX275

    Reliability Reports
    none

    Software/Models
  		• MAX274 Software
    Maxim filter design 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: 1-63 of 63

    MAX274 Free
    Sample    		 Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX274BMRG  


    Land Pattern: Not Available

    		-55°C to +125°C See data sheet
    MAX274AMRG    


    Land Pattern: Not Available

    		-55°C to +125°C See data sheet
    MAX274BC/D    


    Land Pattern: Not Available

    		See data sheet
    MAX274SOFT    


    Land Pattern: Not Available

    		See data sheet
    MAX274BCNG+  
    		PDIP(N);24 pin;158 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: N24+3*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX274BCNG    
    		PDIP(N);24 pin;158 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: N24-3*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX274ACNG    
    		PDIP(N);24 pin;158 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: N24-3*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX274ACNG+    
    		PDIP(N);24 pin;158 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: N24+3*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX274BENG    
    		PDIP(N);24 pin;158 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: N24-3*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX274BENG+  
    		PDIP(N);24 pin;158 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: N24+3*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX274AENG    
    		PDIP(N);24 pin;158 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: N24-3*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX274AENG+    
    		PDIP(N);24 pin;158 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: N24+3*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX274BMYG    
    		SBDIP(N);24 pin;256 mm²
    Outline Drawing: 21-0047 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: Y24-4*
    		-55°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX274AMYG    
    		SBDIP(N);24 pin;256 mm²
    Outline Drawing: 21-0047 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: Y24-4*
    		-55°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX274AMYG/883B    
    		SBDIP(N);24 pin;256 mm²
    Outline Drawing: 21-0047 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: Y24-4*
    		-55°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX274BMYG/883B    
    		SBDIP(N);24 pin;256 mm²
    Outline Drawing: 21-0047 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: Y24-4*
    		-55°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX274ACWI+T    
    		SOIC(W);28 pin;193 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0109 (PDF)
    Use pkgcode/variation: W28+2*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX274ACWI+    
    		SOIC(W);28 pin;193 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0109 (PDF)
    Use pkgcode/variation: W28+2*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX274BCWI+  
    		SOIC(W);28 pin;193 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0109 (PDF)
    Use pkgcode/variation: W28+2*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX274BCWI-T    
    		SOIC(W);28 pin;193 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0109 (PDF)
    Use pkgcode/variation: W28-2*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX274BCWI    
    		SOIC(W);28 pin;193 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0109 (PDF)
    Use pkgcode/variation: W28-2*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX274ACWI-T    
    		SOIC(W);28 pin;193 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0109 (PDF)
    Use pkgcode/variation: W28-2*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX274ACWI    
    		SOIC(W);28 pin;193 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0109 (PDF)
    Use pkgcode/variation: W28-2*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX274BCWI+T    


    Land Pattern: Not Available

    		0°C to +70°C See data sheet
    MAX274AEWI+T    
    		SOIC(W);28 pin;193 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0109 (PDF)
    Use pkgcode/variation: W28+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX274AEWI+    
    		SOIC(W);28 pin;193 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0109 (PDF)
    Use pkgcode/variation: W28+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX274BEWI+  
    		SOIC(W);28 pin;193 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0109 (PDF)
    Use pkgcode/variation: W28+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX274BEWI+T    
    		SOIC(W);28 pin;193 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0109 (PDF)
    Use pkgcode/variation: W28+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX274AEWI    
    		SOIC(W);28 pin;193 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0109 (PDF)
    Use pkgcode/variation: W28-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX274AEWI-T    
    		SOIC(W);28 pin;193 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0109 (PDF)
    Use pkgcode/variation: W28-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX274BEWI    
    		SOIC(W);28 pin;193 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0109 (PDF)
    Use pkgcode/variation: W28-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX274BEWI-T    
    		SOIC(W);28 pin;193 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0109 (PDF)
    Use pkgcode/variation: W28-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX274EVKIT Free
    Sample    		 Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX274EVKIT-DIP    


    Land Pattern: Not Available

    		See data sheet
    MAX275 Free
    Sample    		 Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX275SOFT  


    Land Pattern: Not Available

    		See data sheet
    MAX275AMJP    
    		CDIP(N);20 pin;219 mm²
    Outline Drawing: 21-0045 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: J20-2*
    		-55°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX275BMJP  
    		CDIP(N);20 pin;219 mm²
    Outline Drawing: 21-0045 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: J20-2*
    		-55°C to +125°C See data sheet
    Materials Analysis
    MAX275BC/D    


    Land Pattern: Not Available

    		See data sheet
    MAX275BCPP+  
    		PDIP(N);20 pin;219 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P20+4*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX275ACPP+  
    		PDIP(N);20 pin;219 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P20+4*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX275BCPP    
    		PDIP(N);20 pin;219 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P20-4*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX275ACPP    
    		PDIP(N);20 pin;219 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P20-4*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX275AEPP+  
    		PDIP(N);20 pin;219 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P20+4*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX275BEPP+  
    		PDIP(N);20 pin;219 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P20+4*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX275AEPP    
    		PDIP(N);20 pin;219 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P20-4*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX275BEPP    
    		PDIP(N);20 pin;219 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P20-4*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX275BMDP    
    		SBDIP(N);20 pin;215 mm²
    Outline Drawing: 21-0047 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: D20-1*
    		-55°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX275AMDP    
    		SBDIP(N);20 pin;215 mm²
    Outline Drawing: 21-0047 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: D20-1*
    		-55°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX275BCWP-T    
    		SOIC(W);20 pin;138 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0108 (PDF)
    Use pkgcode/variation: W20-1*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX275ACWP-T    
    		SOIC(W);20 pin;138 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0108 (PDF)
    Use pkgcode/variation: W20-1*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX275BCWP+T    
    		SOIC(W);20 pin;138 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0108 (PDF)
    Use pkgcode/variation: W20+1*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX275BCWP+  
    		SOIC(W);20 pin;138 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0108 (PDF)
    Use pkgcode/variation: W20+1*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX275ACWP    
    		SOIC(W);20 pin;138 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0108 (PDF)
    Use pkgcode/variation: W20-1*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX275BCWP    
    		SOIC(W);20 pin;138 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0108 (PDF)
    Use pkgcode/variation: W20-1*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX275ACWP+T    
    		SOIC(W);20 pin;138 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0108 (PDF)
    Use pkgcode/variation: W20+1*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX275ACWP+  
    		SOIC(W);20 pin;138 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0108 (PDF)
    Use pkgcode/variation: W20+1*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX275BEWP-T    
    		SOIC(W);20 pin;138 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0108 (PDF)
    Use pkgcode/variation: W20-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX275BEWP+T    


    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX275BEWP+  
    		SOIC(W);20 pin;138 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0108 (PDF)
    Use pkgcode/variation: W20+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX275AEWP-T    
    		SOIC(W);20 pin;138 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0108 (PDF)
    Use pkgcode/variation: W20-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX275AEWP    
    		SOIC(W);20 pin;138 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0108 (PDF)
    Use pkgcode/variation: W20-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX275AEWP+T    
    		SOIC(W);20 pin;138 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0108 (PDF)
    Use pkgcode/variation: W20+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX275AEWP+  
    		SOIC(W);20 pin;138 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0108 (PDF)
    Use pkgcode/variation: W20+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX275BEWP    
    		SOIC(W);20 pin;138 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0108 (PDF)
    Use pkgcode/variation: W20-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis

    Notes and Comments
    • Quad 2nd-order continuous-time active filter

    More Information
  		• MAX274 Design Software

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     Description 
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    Document Ref.: 19-4191; Rev 3; 1996-10-01
    This page last modified: 2007-07-18


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