Maxim > Products > Filters (Analog) > MAX7418, MAX7419, MAX7420, ...

MAX7418, MAX7419, MAX7420, MAX7421, MAX7422, MAX7423, MAX7424, MAX7425

5th-Order, Lowpass, Switched-Capacitor Filters
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Status Explanations for product status codes

Active: In Production.

Description

  Create a design and simulate with EE-Sim: [MAX7418][MAX7419][MAX7420][MAX7421][MAX7422][MAX7423][MAX7424][MAX7425]

The MAX7418–MAX7425 5th-order, low-pass, switched-capacitor filters (SCFs) operate from a single +5V (MAX7418–MAX7421) or +3V (MAX7422–MAX7425) supply. These devices draw only 3mA of supply current and allow corner frequencies from 1Hz to 45kHz, making them ideal for low-power post-DAC filtering and anti-aliasing applications. They feature a shutdown mode that reduces supply current to 0.2µA.

Two clocking options are available: self-clocking (through the use of an external capacitor), or external clocking for tighter corner-frequency control. An offset adjust pin allows for adjustment of the DC output level.

The MAX7418/MAX7422 deliver 53dB of stopband rejection and a sharp rolloff with a 1.6 transition ratio. The MAX7421/MAX7425 achieve a sharper rolloff with a 1.25 transition ratio while still providing 37dB of stopband rejection. The MAX7419/MAX7423 Bessel filters provide low overshoot and fast settling, and the MAX7420/MAX7424 Butterworth filters provide a maximally flat passband response. Their fixed response simplifies the design task of selecting a clock frequency.
 

Data Sheet

Download this datasheet in PDF formatDownload Rev 0 (PDF, 364kB)
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An evaluation kit is available: MAXFILTERBRD

Key Features

  • 5th-Order, Lowpass Filters
    • Elliptic Response (MAX7418/MAX7421/MAX7422/MAX7425)
    • Bessel Response (MAX7419/MAX7423)
    • Butterworth Response (MAX7420/MAX7424)
  • Clock-Turnable Corner Frequency (1Hz to 45kHz)
  • Single-Supply Operation
    • +5V (MAX7418–MAX7421)
    • +3V (MAX7422–MAX7425)
  • Low Power
    • 3mA (Operating Mode)
    • 0.2µA (Shutdown Mode)
  • Available in 8-Pin µMAX® Package
  • Low Output Offset: ±4mV
 

Applications/Uses

  • ADC Anti-Aliasing
  • CT2 Base Stations
  • DAC Post-Filtering
  • Speech Processing
   

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
(V)		 Design Tools Oper. Temp.
(°C)		 Budgetary Price
max min See Notes
MAX7418  1 5 Switched Cap Lowpass Elliptic Clock 1 30 5 EE-Sim
-40 to +85
0 to +70
 $2.85 @1k
MAX7419  Bessel 30 5 $2.85 @1k
MAX7420  Butterworth 30 5 $2.85 @1k
MAX7421  Elliptic 30 5 $2.85 @1k
MAX7422  Elliptic 45 3 $2.85 @1k
MAX7423  Bessel 45 3 $2.85 @1k
MAX7424  Butterworth 45 3 $2.85 @1k
MAX7425  Elliptic 45 3 $2.85 @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

MAX7418, MAX7419, MAX7420, MAX7421, MAX7422, MAX7423, MAX7424, MAX7425: Typical Operating Circuit
Typical Operating Circuit

Application Notes

Tutorial 928   Filter Basics: Anti-Aliasing
Tutorial 3494   The Basics of Anti-Aliasing: Using Switched-Capacitor Filters
Tutorial 4993   Reduce the Chances of Human Error: Part 2, Super Amps and Filters for Analog Interface

Reliability Reports

Reliability Report: MAX7419.pdf MAX7422.pdf MAX7424.pdf
Show FIT data for:
Request Reliability Report for:

Software/Models

  Create a design and simulate with EE-Sim: [MAX7418][MAX7419][MAX7420][MAX7421][MAX7422][MAX7423][MAX7424][MAX7425]

Ordering Information

Filters: Part Number: Package: Temperature: Tape and Reel Sample
Devices: 51-64 / 64 <-- 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
MAX7424CUA+T    
Active uMAX;

Land Pattern: Not Available

0°C to +70°C See data sheet
MAX7424CUA-T    
Active µMAX;8 pin;15.6 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
MAX7424EUA    
Active µMAX;8 pin;15.6 mm²
Outline Drawing:21-0036 (PDF)
Land Pattern: 90-0092 (PDF)
Use pkgcode/variation: U8-1*
-40°C to +85°C RoHS/Lead-Free: No
Materials Analysis
MAX7424EUA+  
Active µMAX;8 pin;15.6 mm²
Outline Drawing:21-0036 (PDF)
Land Pattern: 90-0092 (PDF)
Use pkgcode/variation: U8+1*
-40°C to +85°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAX7424EUA+T    
Active µMAX;8 pin;15.6 mm²
Outline Drawing:21-0036 (PDF)
Land Pattern: 90-0092 (PDF)
Use pkgcode/variation: U8+1*
-40°C to +85°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAX7424EUA-T    
Active µMAX;8 pin;15.6 mm²
Outline Drawing:21-0036 (PDF)
Land Pattern: 90-0092 (PDF)
Use pkgcode/variation: U8-1*
-40°C to +85°C RoHS/Lead-Free: No
Materials Analysis
MAX7425CUA    
Active µMAX;8 pin;15.6 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
MAX7425CUA+  
Active µMAX;8 pin;15.6 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
MAX7425CUA+T    
Active uMAX;8 pin

Land Pattern: Not Available

0°C to +70°C See data sheet
MAX7425CUA-T    
Active µMAX;8 pin;15.6 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
Part Number Free
Sample		 Buy Status Explanations for product status codes Package:
TYPE PINS FOOTPRINT
DRAWING  CODE/VAR * 		Temp RoHS/Lead-Free?
Materials Analysis
MAX7425EUA    
Active µMAX;8 pin;15.6 mm²
Outline Drawing:21-0036 (PDF)
Land Pattern: 90-0092 (PDF)
Use pkgcode/variation: U8-1*
-40°C to +85°C RoHS/Lead-Free: No
Materials Analysis
MAX7425EUA+  
Active µMAX;8 pin;15.6 mm²
Outline Drawing:21-0036 (PDF)
Land Pattern: 90-0092 (PDF)
Use pkgcode/variation: U8+1*
-40°C to +85°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAX7425EUA+T    
Active µMAX;8 pin;15.6 mm²
Outline Drawing:21-0036 (PDF)
Land Pattern: 90-0092 (PDF)
Use pkgcode/variation: U8+1*
-40°C to +85°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAX7425EUA-T    
Active µMAX;8 pin;15.6 mm²
Outline Drawing:21-0036 (PDF)
Land Pattern: 90-0092 (PDF)
Use pkgcode/variation: U8-1*
-40°C to +85°C RoHS/Lead-Free: No
Materials Analysis
Devices: 51-64 / 64 <-- 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.

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Evaluation Kits

MAXFILTERBRD Evaluation Kit for the MAX7408, MAX7409, MAX7410, MAX7411, MAX7412, MAX7413, MAX7414, MAX7415, MAX7418, MAX7419, MAX7420, MAX7421, MAX7422, MAX7423, MAX7424, and MAX7425

More Information

New Product Press Release [ 2000-11-07 ]


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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
  Similar Products by Function
Similar Products by Application
Evaluation Kits
Products with Similar Part Numbers
Products Used With This
 
Document Ref.: 19-1821 Rev 0; 2000-11-01
This page last modified: 2010-12-01

 


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