MAX291EWE+ by Analog Devices

8th-Order, Lowpass, Switched-Capacitor Filters


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.

Where to Buy

Prices starting from US$4.75

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Features

8th-Order Lowpass Filters: Butterworth (MAX291/MAX295) Bessel (MAX292/MAX296)
Butterworth (MAX291/MAX295)
Bessel (MAX292/MAX296)
Clock-Tunable Corner-Frequency Range: 0.1Hz to 25kHz (MAX291/MAX292) 0.1Hz to 50kHz (MAX295/MAX296)
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)
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

Specifications

Filter Type Lowpass
Filter Sections 1
Order Per Filter Section 8
Highest Cutoff (kHz) (min) 25
Lowest Cutoff (Hz) (max) 0.1
Filter Class Switched Cap
Filter Characteristic Butterworth
Program Method Clock
Oper. Temp. (°C) -55 to +125-40 to +850 to +70
Package/Pins CDIP/8PDIP/8SOIC (N)/8SOIC (W)/16
BudgetaryPrice (See Notes) 5.43


MAX291EWE+ Semiconductors - ICs by Analog Devices

IC SW CAP FILTER LOW PASS 25KHZ SO-16

Status: Unknown
Series: -
RoHS: Unknown
Download Datasheet Visit Manufacturer Site View Pricing & Stock

Specifications

IC Filter Type Switched Capacitor
Filter Order 8th
No. of Filters 1
Cutoff Frequency 25kHz
Program Clock Frequency Typ 25kHz
Supply Voltage Range ± 2.375V to ± 5.5V

Alternative Descriptions

8th-Order, Lowpass, Switched-C | Analog Devices

Frequently Asked Questions

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Is the MAX291EWE+ RoHS compliant?

This part has not been flagged as RoHS Compliant.

Which authorised distributors for MAX291EWE+ have stock available?

Authorised distributors including Analog Devices and Farnell have stock available or on a lead time for MAX291EWE+ .

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