MAX291, MAX292, MAX295, MAX296 8차, 로우패스, 스위치드 커패시터 필터

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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.

주요기능

애플리케이션/용도

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

	50Hz/60Hz 라인 잡음 필터링
	ADC 앤티 앨리어싱 필터
	DAC 포스트 필터링
	잡음 분석

Key Specifications: Active Filters

Part Number

Filter Sections per Pkg.

Order per Filter Section

Filter Class

Filter Type

Filter Characteristic

Program Method

Lowest Cutoff (Hz)

Highest Cutoff (kHz)

Dual Supply Voltage (±V)

Supply Voltage (V)

Package

Smallest Available Package (max w/pins) (mm²)

RoHS Available

Operating Temp. Range (°C)

Price^**

MAX291

Switched Cap

Lowpass

Butterworth

Clock

0.1

Ceramic DIP/8
DICE SALES/0
PDIP/8
SOIC/16
SOIC/8

Yes

-40 to +85
-55 to +125
0 to +70

$2.95 @ 1k

MAX292

Bessel

$2.95 @ 1k

MAX295

Butterworth

$2.95 @ 1k

MAX296

Bessel

$2.95 @ 1k

See All Active Filters (47)

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.