Maxim > Products > Filters (Analog) > MAX291, MAX292, MAX295, MAX296

MAX291, MAX292, MAX295, MAX296

8th-Order, Lowpass, Switched-Capacitor Filters

Also See MAX7401/5 8th-Order, Low-Power Bessel Filters
 Overview   Technical Documents   Ordering Info   Related Products   User Comments (0)   All   


Status Explanations for product status codes

Active: In Production.

Description

The MAX291/MAX292/MAX295/MAX296 are easy-to-use, 8th-order, lowpass, switched-capacitor filters that can be set up with corner frequencies from 0.1Hz to 25kHz (MAX291/MAX292) or 0.1Hz to 50kHz (MAX295/MAX296).

The MAX291/MAX295 Butterworth filters provide maximally flat passband response, and the MAX292/MAX296 Bessel filters provide low overshoot and fast settling. All four filters have fixed responses, so the design task is limited to selecting the clock frequency that controls the filter's corner frequency.

An external capacitor is used to generate a clock using the internal oscillator, or an external clock signal can be used. An uncommitted operational amplifier (noninverting input grounded) is provided for building a continuous time lowpass filter for post-filtering or anti-aliasing.

Produced in an 8-pin DIP/SO and a 16-pin wide SO package, and requiring a minimum of external components, the MAX291 series delivers very aggressive performance from a tiny area.
 

Data Sheet

Download this datasheet in PDF formatDownload Rev 5 (PDF, 192kB)
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Key Features

  • 8th-Order Lowpass Filters:
    • Butterworth (MAX291/MAX295)
    • Bessel (MAX292/MAX296)
  • Clock-Tunable Corner-Frequency Range:
    • 0.1Hz to 25kHz (MAX291/MAX292)
    • 0.1Hz to 50kHz (MAX295/MAX296)
  • No External Resistors or Capacitors Required
  • Internal or External Clock
  • Clock to Corner Frequency Ratio:
    • 100:1 (MAX291/MAX292)
    • 50:1 (MAX295/MAX296)
  • Low Noise: -70dB THD + Noise (Typ)
  • Operate with a Single +5V Supply or Dual ±5V Supplies
  • Uncommitted Op Amp for Anti-Aliasing or Clock-Noise Filtering
  • 8-Pin DIP and SO Packages
 

Applications/Uses

  • 50Hz/60Hz Line-Noise Filtering
  • ADC Anti-Aliasing Filter
  • DAC Post-Filtering
  • Noise 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)		 Budgetary Price
max min Dual See Notes
MAX291  1 8 Switched Cap Lowpass Butterworth Clock 0.1 25 5 5
-55 to +125
-40 to +85
0 to +70
 $3.67 @1k
MAX292  Bessel 25 $3.67 @1k
MAX295  Butterworth 50 $3.67 @1k
MAX296  Bessel 50 $3.67 @1k
See All Active Filters (50)
Pricing 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

MAX291, MAX292, MAX295, MAX296: Typical Operating Circuit
Typical Operating Circuit

Application Notes

Application Note 1999   Sine Wave Generator Is Crystal Accurate

Reliability Reports

Reliability Report: MAX291.pdf MAX295.pdf
Show FIT data for:
Request Reliability Report for:

Software/Models

none

Ordering Information

Filters: Part Number: Package: Temperature: Tape and Reel Sample
Devices: 51-91 / 91 <-- Previous   1 2  Next -->
Part Number Free
Sample		 Buy Status Explanations for product status codes Package:
TYPE PINS FOOTPRINT
DRAWING  CODE/VAR * 		Temp RoHS/Lead-Free?
Materials Analysis
MAX295CSA+T    
Active N.SO;8 pin

Land Pattern: Not Available

0°C to +70°C See data sheet
MAX295CSA-T    
Active N.SO;8 pin

Land Pattern: Not Available

0°C to +70°C See data sheet
MAX295CWE    
Active SOIC(W);16 pin;111.8 mm²
Outline Drawing:21-0042 (PDF)
Land Pattern: 90-0107 (PDF)
Use pkgcode/variation: W16-1*
0°C to +70°C RoHS/Lead-Free: No
Materials Analysis
MAX295CWE+  
Active SOIC(W);16 pin;111.8 mm²
Outline Drawing:21-0042 (PDF)
Land Pattern: 90-0107 (PDF)
Use pkgcode/variation: W16+1*
0°C to +70°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAX295CWE+T    
Active W.SO;16 pin

Land Pattern: Not Available

0°C to +70°C See data sheet
MAX295CWE-T    
Active W.SO;16 pin

Land Pattern: Not Available

0°C to +70°C See data sheet
MAX295EPA    
Active PDIP(N);8 pin;79.7 mm²
Outline Drawing:21-0043 (PDF)
Land Pattern: Not Applicable
Use pkgcode/variation: P8-2*
-40°C to +85°C RoHS/Lead-Free: No
Materials Analysis
MAX295EPA+  
Active PDIP(N);8 pin;79.7 mm²
Outline Drawing:21-0043 (PDF)
Land Pattern: Not Applicable
Use pkgcode/variation: P8+2*
-40°C to +85°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAX295ESA    
Active SOIC(N);8 pin;30.9 mm²
Outline Drawing:21-0041 (PDF)
Land Pattern: 90-0096 (PDF)
Use pkgcode/variation: S8-5*
-40°C to +85°C RoHS/Lead-Free: No
Materials Analysis
MAX295ESA+  
Active SOIC(N);8 pin;30.9 mm²
Outline Drawing:21-0041 (PDF)
Land Pattern: 90-0096 (PDF)
Use pkgcode/variation: S8+5*
-40°C to +85°C RoHS/Lead-Free: Lead Free
Materials Analysis
Part Number Free
Sample		 Buy Status Explanations for product status codes Package:
TYPE PINS FOOTPRINT
DRAWING  CODE/VAR * 		Temp RoHS/Lead-Free?
Materials Analysis
MAX295ESA+T    
Active N.SO;8 pin

Land Pattern: Not Available

-40°C to +85°C See data sheet
MAX295ESA-T    
Active N.SO;8 pin

Land Pattern: Not Available

-40°C to +85°C See data sheet
MAX295EWE    
Active SOIC(W);16 pin;111.8 mm²
Outline Drawing:21-0042 (PDF)
Land Pattern: 90-0107 (PDF)
Use pkgcode/variation: W16-1*
-40°C to +85°C RoHS/Lead-Free: No
Materials Analysis
MAX295EWE+  
Active SOIC(W);16 pin;111.8 mm²
Outline Drawing:21-0042 (PDF)
Land Pattern: 90-0107 (PDF)
Use pkgcode/variation: W16+1*
-40°C to +85°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAX295EWE+T    
Active SOIC(W);16 pin;111.8 mm²
Outline Drawing:21-0042 (PDF)
Land Pattern: 90-0107 (PDF)
Use pkgcode/variation: W16+1*
-40°C to +85°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAX295EWE-T    
Active W.SO;16 pin

Land Pattern: Not Available

-40°C to +85°C See data sheet
MAX295EWE/GH9    
Active SOIC(W);16 pin;111.8 mm²
Outline Drawing:21-0042 (PDF)
Land Pattern: 90-0107 (PDF)
Use pkgcode/variation: W16-1*
-40°C to +85°C RoHS/Lead-Free: No
Materials Analysis
MAX295EWE/GH9-T    
Active SOIC(W);16 pin;111.8 mm²
Outline Drawing:21-0042 (PDF)
Land Pattern: 90-0107 (PDF)
Use pkgcode/variation: W16-1*
-40°C to +85°C RoHS/Lead-Free: No
Materials Analysis
MAX295MJA    
Active CDIP(N);8 pin;82.6 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
MAX296C/D    
Active DICE SALES;NA pin;DICE;

Land Pattern: Not Applicable
Use pkgcode/variation: DICE*
See data sheet
Part Number Free
Sample		 Buy Status Explanations for product status codes Package:
TYPE PINS FOOTPRINT
DRAWING  CODE/VAR * 		Temp RoHS/Lead-Free?
Materials Analysis
MAX296CPA    
Active PDIP(N);8 pin;79.7 mm²
Outline Drawing:21-0043 (PDF)
Land Pattern: Not Applicable
Use pkgcode/variation: P8-2*
0°C to +70°C RoHS/Lead-Free: No
Materials Analysis
MAX296CPA+  
Active PDIP(N);8 pin;79.7 mm²
Outline Drawing:21-0043 (PDF)
Land Pattern: Not Applicable
Use pkgcode/variation: P8+2*
0°C to +70°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAX296CSA    
Active SOIC(N);8 pin;30.9 mm²
Outline Drawing:21-0041 (PDF)
Land Pattern: 90-0096 (PDF)
Use pkgcode/variation: S8-5*
0°C to +70°C RoHS/Lead-Free: No
Materials Analysis
MAX296CSA+  
Active SOIC(N);8 pin;30.9 mm²
Outline Drawing:21-0041 (PDF)
Land Pattern: 90-0096 (PDF)
Use pkgcode/variation: S8+5*
0°C to +70°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAX296CSA+T    
Active N.SO;8 pin

Land Pattern: Not Available

0°C to +70°C See data sheet
MAX296CSA-T    
Active N.SO;8 pin

Land Pattern: Not Available

0°C to +70°C See data sheet
MAX296CWE    
Active SOIC(W);16 pin;111.8 mm²
Outline Drawing:21-0042 (PDF)
Land Pattern: 90-0107 (PDF)
Use pkgcode/variation: W16-1*
0°C to +70°C RoHS/Lead-Free: No
Materials Analysis
MAX296CWE+  
Active SOIC(W);16 pin;111.8 mm²
Outline Drawing:21-0042 (PDF)
Land Pattern: 90-0107 (PDF)
Use pkgcode/variation: W16+1*
0°C to +70°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAX296CWE+T    
Active W.SO;16 pin

Land Pattern: Not Available

0°C to +70°C See data sheet
MAX296CWE-T    
Active W.SO;16 pin

Land Pattern: Not Available

0°C to +70°C See data sheet
Part Number Free
Sample		 Buy Status Explanations for product status codes Package:
TYPE PINS FOOTPRINT
DRAWING  CODE/VAR * 		Temp RoHS/Lead-Free?
Materials Analysis
MAX296EPA    
Active PDIP(N);8 pin;79.7 mm²
Outline Drawing:21-0043 (PDF)
Land Pattern: Not Applicable
Use pkgcode/variation: P8-2*
-40°C to +85°C RoHS/Lead-Free: No
Materials Analysis
MAX296EPA+  
Active PDIP(N);8 pin;79.7 mm²
Outline Drawing:21-0043 (PDF)
Land Pattern: Not Applicable
Use pkgcode/variation: P8+2*
-40°C to +85°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAX296ESA    
Active SOIC(N);8 pin;30.9 mm²
Outline Drawing:21-0041 (PDF)
Land Pattern: 90-0096 (PDF)
Use pkgcode/variation: S8-5*
-40°C to +85°C RoHS/Lead-Free: No
Materials Analysis
MAX296ESA+  
Active SOIC(N);8 pin;30.9 mm²
Outline Drawing:21-0041 (PDF)
Land Pattern: 90-0096 (PDF)
Use pkgcode/variation: S8+5*
-40°C to +85°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAX296ESA+T    
Active N.SO;8 pin

Land Pattern: Not Available

-40°C to +85°C See data sheet
MAX296ESA-T    
Active N.SO;8 pin

Land Pattern: Not Available

-40°C to +85°C See data sheet
MAX296EWE    
Active SOIC(W);16 pin;111.8 mm²
Outline Drawing:21-0042 (PDF)
Land Pattern: 90-0107 (PDF)
Use pkgcode/variation: W16-1*
-40°C to +85°C RoHS/Lead-Free: No
Materials Analysis
MAX296EWE+  
Active SOIC(W);16 pin;111.8 mm²
Outline Drawing:21-0042 (PDF)
Land Pattern: 90-0107 (PDF)
Use pkgcode/variation: W16+1*
-40°C to +85°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAX296EWE+T    
Active W.SO;16 pin

Land Pattern: Not Available

-40°C to +85°C See data sheet
MAX296EWE-T    
Active W.SO;16 pin

Land Pattern: Not Available

-40°C to +85°C See data sheet
Part Number Free
Sample		 Buy Status Explanations for product status codes Package:
TYPE PINS FOOTPRINT
DRAWING  CODE/VAR * 		Temp RoHS/Lead-Free?
Materials Analysis
MAX296MJA    
Active CDIP(N);8 pin;82.6 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
Devices: 51-91 / 91 <-- Previous   1 2  Next -->

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; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product 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.

Notes and Comments

Single 8th-order, lowpass, switched-capacitor filter

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See All Active Filters (50 Products)


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Information Index

Overview

  

Technical Documents

  

Ordering Info

  

Related Products

  
Description
Key Features
Applications/Uses
Key Specifications
Diagram
Notes and Comments
  Data Sheet
Application Notes
Evaluation Kits
Product Guides
Reliability Reports
Software/Models
  Price and Availability
Samples
Buy Online
Package Information
Lead-Free Information
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Document Ref.: 19-4526 Rev 5; 2010-08-30
This page last modified: 2010-08-30

 


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