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5th-Order, Lowpass, Switched-Capacitor Filters

Smallest, Low-Power 5th-Order Filters

Product Details

Key Features

Applications/Uses

Parametric specs for Active Filters
Filter Type Lowpass
Filter Sections 1
Order Per Filter Section 5
Highest Cutoff (kHz) (min) 15
Lowest Cutoff (Hz) (max) 1
Filter Class Switched Cap
Filter Characteristic Butterworth
Program Method Clock
Oper. Temp. (°C) -40 to +85
0 to +70
Package/Pins PDIP/8
UMAX/8
Budgetary
Price (See Notes)
2.38
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Simplified Block Diagram

Technical Docs

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Parameters

Parametric specs for Active Filters
Filter Type Lowpass
Filter Sections 1
Order Per Filter Section 5
Highest Cutoff (kHz) (min) 15
Lowest Cutoff (Hz) (max) 1
Filter Class Switched Cap
Filter Characteristic Butterworth
Program Method Clock
Oper. Temp. (°C) -40 to +85
0 to +70
Package/Pins PDIP/8
UMAX/8
Budgetary
Price (See Notes)
2.38

Key Features

  • 5th-Order Lowpass Filters
    • Bessel Response (MAX7409/MAX7413)
    • Butterworth Response (MAX7410/MAX7414)
  • Clock-Tunable Corner Frequency (1Hz to 15kHz)
  • Single-Supply Operation
    • +5V (MAX7409/MAX7410)
    • +3V (MAX7413/MAX7414)
  • Low Power
    • 1.2mA (operating mode)
    • 0.2µA (shutdown mode)
  • Available in 8-Pin µMAX®/DIP Packages
  • Low Output Offset: ±4mV
  • Single 5th-order, Bessel and Butterworth switched-capacitor filters. 15kHz maximum F (c)

Applications/Uses

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

Description

The MAX7409/MAX7410/MAX7413/MAX7414 5th-order, lowpass, switched-capacitor filters (SCFs) operate from a single +5V (MAX7409/MAX7410) or +3V (MAX7413/ MAX7414) supply. These devices draw only 1.2mA of supply current and allow corner frequencies from 1Hz to 15kHz, making them ideal for low-power post-DAC filtering and anti-aliasing applications. They feature a shutdown mode, which reduces the supply current to 0.2µA.

Two clocking options are available on these devices: 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 MAX7409/MAX7413 Bessel filters provide low overshoot and fast settling, while the MAX7410/MAX7414 Butterworth filters provide a maximally flat passband response. Their fixed response simplifies the design task to selecting a clock frequency.

Simplified Block Diagram

MAX7409, MAX7410, MAX7413, MAX7414: Typical Operating Circuit MAX7409, MAX7410, MAX7413, MAX7414: Typical Operating Circuit Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .