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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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Status
Active: In Production.

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 Order Per Filter Section Filter Class Filter Type Filter Characteristic Program Method Lowest Cutoff
    (Hz)    		 Highest Cutoff
    (kHz)    		 VSUPPLY (Dual)
    (±V)    		 VSUPPLY
    (V)    		 Oper. Temp.
    (°C)    		 Price
    max min Dual See Notes
    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)

    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 Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX274SOFT    
    		Active

    Land Pattern: Not Available

    		See data sheet
    MAX274BC/D    
    		Active DICE SALES;NA pin;0 mm²

    Land Pattern: Not Applicable
    Use pkgcode/variation: DICE*
    		See data sheet
    MAX274ACNG    
    		Active 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
    MAX274BCNG    
    		Active 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+    
    		Active 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+  
    		Active 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
    MAX274AENG    
    		Active 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    
    		Active 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+    
    		Active 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
    MAX274BENG+  
    		Active 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
    MAX274AMRG    
    		Active

    Land Pattern: Not Available

    		-55°C to +125°C See data sheet
    MAX274BMRG    
    		Active

    Land Pattern: Not Available

    		-55°C to +125°C See data sheet
    MAX274AMYG    
    		Active 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    
    		Active 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    
    		Active 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    
    		Active 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    
    		Active 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+    
    		Active 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    
    		Active 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    
    		Active 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    
    		Active 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    
    		Active 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+  
    		Active 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    
    		Active

    Land Pattern: Not Available

    		0°C to +70°C See data sheet
    MAX274AEWI    
    		Active 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    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX274BEWI    
    		Active 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    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX274AEWI+T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX274AEWI+    
    		Active 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+  
    		Active 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    
    		Active 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
    MAX274EVKIT Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX274EVKIT-DIP    
    		Active

    Land Pattern: Not Available

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

    Land Pattern: Not Available

    		See data sheet
    MAX275AMJP    
    		Active 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    
    		Active 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
    MAX275BC/D    
    		Active DICE SALES;NA pin;0 mm²

    Land Pattern: Not Applicable
    Use pkgcode/variation: DICE*
    		See data sheet
    MAX275ACPP    
    		Active 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
    MAX275BCPP    
    		Active 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+  
    		Active 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+  
    		Active 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
    MAX275AEPP    
    		Active 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    
    		Active 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
    MAX275AEPP+  
    		Active 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+  
    		Active 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
    MAX275AMDP    
    		Active 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
    MAX275BMDP    
    		Active 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
    MAX275ACWP    
    		Active SOIC(W);20 pin;137 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    
    		Active

    Land Pattern: Not Available

    		0°C to +70°C See data sheet
    MAX275BCWP    
    		Active SOIC(W);20 pin;137 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    
    		Active SOIC(W);20 pin;137 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+  
    		Active SOIC(W);20 pin;137 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+T    
    		Active SOIC(W);20 pin;137 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+  
    		Active SOIC(W);20 pin;137 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+T    
    		Active

    Land Pattern: Not Available

    		0°C to +70°C See data sheet
    MAX275AEWP    
    		Active SOIC(W);20 pin;137 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    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX275BEWP    
    		Active SOIC(W);20 pin;137 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    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX275AEWP+  
    		Active SOIC(W);20 pin;137 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    
    		Active SOIC(W);20 pin;137 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+  
    		Active SOIC(W);20 pin;137 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+T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet

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

    More Information
  		• MAX274 Design Software

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


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