Interface - Filters - Active

Category Introduction

Filters that are Active are designed to remove unwanted frequencies and signals from a circuit using passives components and amplifying components. The filter types include Antialiasing, Band Pass, Bessel, Butterworth, Cauer, Continuous Low Pass, Digital, Elliptic Band Pass, FIR, Half Band, Linear Phase, Low Pass, Ripple, SD/ED/HD, Serial I/O, Universal, and Variable with frequency ranging from 2kHz to 6.9GHz.

Product List

37 Items

Mfr Part #	Quantity Available	UnitPrice	Packaging	Product Status	Filter Type	Frequency - Cutoff or Center	Number of Filters	Filter Order	Voltage - Supply	Mounting Type	Package / Case	Supplier Device Package
LTC1562IG-2#TRPBF IC FILTER 300KHZ UNIV 20SSOP Analog Devices Inc.	43	$22.91	Tape & Reel (TR)	Active	Universal, Continuous-Time	300kHz	4	8th	4.75V ~ 10.5V, ±4.75V ~ 5.25V	Surface Mount	20-SSOP (0.209", 5.30mm Width)	20-SSOP
UAF42AU IC FILTER 100KHZ UNIV 16SOIC Texas Instruments	10	$21.08	Bulk	Active	Universal, Continuous-Time	100kHz	3	-	±6V ~ 18V	Surface Mount	16-SOIC (0.295", 7.50mm Width)	16-SOIC
AMC1210IRHAT IC FILTER DIGITAL 40VQFN Texas Instruments	121	$4.24	Tape & Reel (TR)	Active	Digital	-	4	-	2.4V ~ 5.5V	Surface Mount	40-VFQFN Exposed Pad	40-VQFN (6x6)
LTC1563-2IGN#TRPBF IC FILTER 256KHZ LOWPASS 16SSOP Analog Devices Inc.	8	$6.59	Tape & Reel (TR)	Active	Butterworth, Low Pass Switched Capacitor	256kHz	1	4th	2.7V ~ 11V, ±2.7V ~ 5.5V	Surface Mount	16-SSOP (0.154", 3.90mm Width)	16-SSOP
LTC1564IG#PBF IC FILTR 150KHZ ANTIALIAS 16SSOP Analog Devices Inc.	34	$21.84	Tube	Active	Antialiasing	150kHz	1	8th	2.7V ~ 10.5V	Surface Mount	16-SSOP (0.209", 5.30mm Width)	16-SSOP
HMC892ALP5E IC FILTER BAND PASS 32LFCSP Analog Devices Inc.	9	$117.56	Strip	Active	Band Pass	3.45GHz ~ 6.25GHz	1	-	0V ~ 14V	Surface Mount	32-WFQFN Exposed Pad, CSP	32-LFCSP (5x5)
MF10CCWMX/NOPB IC FILTER 200KHZ SWITCH 20SOIC Texas Instruments	173	$3.63	Tape & Reel (TR)	Active	Universal Switched Capacitor	200kHz	2	4th	±9V ~ 14V	Surface Mount	20-SOIC (0.295", 7.50mm Width)	20-SOIC
LTC1067IGN#PBF IC FILTER 20KHZ SWITCHED 16SSOP Analog Devices Inc.	3	$11.61	Tube	Active	Universal Switched Capacitor	20kHz	2	4th	3V ~ 11V, ±3V ~ 5.5V	Surface Mount	16-SSOP (0.154", 3.90mm Width)	16-SSOP
LTC1562IG#PBF IC FILTER 150KHZ UNIV 20SSOP Analog Devices Inc.	22	$23.16	Tube	Active	Universal, Continuous-Time	150kHz	4	8th	4.75V ~ 10.5V, ±4.75V ~ 5.25V	Surface Mount	20-SSOP (0.209", 5.30mm Width)	20-SSOP
HMC891ALP5E IC FILTER BAND PASS 32LFCSP Analog Devices Inc.	4	$117.51	Strip	Active	Band Pass	1.95GHz ~ 3.4GHz	1	-	0V ~ 14V	Surface Mount	32-WFQFN Exposed Pad, CSP	32-LFCSP (5x5)
ADMV8420ACPZ 10 TO 20 GHZ TUNABLE BPF Analog Devices Inc.	3	$135.08	Bulk	Active	Band Pass	11GHz ~ 20GHz	1	-	-	Surface Mount	24-WFQFN Exposed Pad, CSP	24-LFCSP (4x4)
HMC890ALP5E IC FILTER 1-1.9GHZ BAND 32LFCSP Analog Devices Inc.	7	$117.74	Strip	Active	Band Pass	1GHz ~ 1.9GHz	1	-	0V ~ 14V	Surface Mount	32-WFQFN Exposed Pad, CSP	32-LFCSP (5x5)
LTC1563-2IGN#PBF IC FILTER 256KHZ LOWPASS 16SSOP Analog Devices Inc.	118	$6.66	Tube	Active	Butterworth	256kHz	1	4th	2.7V ~ 11V, ±2.7V ~ 5.5V	Surface Mount	16-SSOP (0.154", 3.90mm Width)	16-SSOP
ADMV8416ACPZ 8 TO 16 GHZ TUNABLE BPF Analog Devices Inc.	4	$127.19	Bulk	Active	Band Pass	7GHz ~ 16GHz	1	-	5.5V	Surface Mount	40-WFQFN Exposed Pad, CSP	40-LFCSP (6x6)
ADMV8432ACPZ 16 TO 32 GHZ TUNABLE BPF Analog Devices Inc.	3	$142.50	Strip	Active	Band Pass	16GHz ~ 32GHz	1	-	5.5V	Surface Mount	40-WFQFN Exposed Pad, CSP	40-LFCSP (6x6)
AMC1210IRHAR IC FILTER DIGITAL 40VQFN Texas Instruments	352	$2.04	Tape & Reel (TR)	Active	Digital	-	4	-	2.4V ~ 5.5V	Surface Mount	40-VFQFN Exposed Pad	40-VQFN (6x6)
TLC04IDR IC FILTER 30KHZ BUTTER 8SOIC Texas Instruments	196	$2.15	Tape & Reel (TR)	Active	Butterworth, Low Pass Switched Capacitor	30kHz	1	4th	±2.25V ~ 6V	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOIC
HMC1044LP3ETR IC FILTER LOW PASS 16QFN Analog Devices Inc.	85	$11.33	Cut Tape (CT)	Obsolete	Low Pass	-	1	-	-	Surface Mount	16-VFQFN Exposed Pad	16-QFN (3x3)
HMC890ALP5ETR IC FILTER 1-1.9GHZ BAND 32LFCSP Analog Devices Inc.	4	$111.75	Tape & Reel (TR)	Active	Band Pass	1GHz ~ 1.9GHz	1	-	0V ~ 14V	Surface Mount	32-WFQFN Exposed Pad, CSP	32-LFCSP (5x5)
HMC891ALP5ETR IC FILTER BAND PASS 32LFCSP Analog Devices Inc.	9	$112.11	Tape & Reel (TR)	Active	Band Pass	1.95GHz ~ 3.4GHz	1	-	0V ~ 14V	Surface Mount	32-WFQFN Exposed Pad, CSP	32-LFCSP (5x5)

About Active Filters

What are Active Filters?

Active Filters

Active filters are essential components in the realm of electronic circuits, specifically within the category of Interface ICs. These filters are designed to allow certain frequency components of a signal to pass while attenuating others, thus shaping the frequency response of electronic systems. Unlike passive filters, active filters utilize active components such as operational amplifiers, transistors, or integrated circuits to achieve their filtering action. This enables them to provide gain, higher input and output impedances, and more precise control over the filter characteristics. Active filters are widely used in applications where signal amplification and precise frequency selection are crucial.

Types of Active Filters

Low-Pass Filters

Low-pass active filters allow signals with a frequency lower than a certain cutoff frequency to pass through while attenuating higher frequencies. They are commonly used in audio applications to remove high-frequency noise from signals, ensuring clarity and fidelity in sound reproduction.

High-Pass Filters

High-pass active filters permit signals with frequencies higher than a specified cutoff frequency to pass, attenuating those below it. These filters are often used in audio systems to block low-frequency noise or hum, allowing only the desired higher frequency signals to be amplified and heard.

Band-Pass Filters

Band-pass active filters allow signals within a certain frequency range to pass while attenuating those outside this range. They are crucial in applications like radio communications, where they help isolate specific frequency bands for transmission or reception, ensuring clear and accurate signal processing.

Band-Stop Filters

Also known as notch filters, band-stop active filters attenuate signals within a specific frequency range while allowing those outside this range to pass. They are often used in audio processing to eliminate unwanted frequencies, such as feedback or hum, without affecting the overall sound quality.

How to choose Active Filters?

When selecting active filters, several key parameters must be considered to ensure optimal performance for your specific application:

Cutoff Frequency: Determine the frequency range that needs to be filtered and select a filter with an appropriate cutoff frequency.
Filter Order: Higher-order filters provide steeper roll-off rates, which may be necessary for applications requiring sharp frequency discrimination.
Gain: Consider the amount of amplification required, as active filters can provide gain to the signal.
Impedance Matching: Ensure the filter's input and output impedances are compatible with the surrounding circuitry.
Quality and Reliability: Evaluate the reputation of suppliers and the quality of their products through reviews, certifications, and testing reports.
Environmental Factors: Consider temperature ranges, humidity, and other environmental conditions that may affect filter performance.
Installation Requirements: Assess the physical size, power supply needs, and mounting options to ensure compatibility with your system.

Applications of Active Filters

Telecommunications

In telecommunications, active filters are used to manage signal bandwidth, reduce noise, and improve signal clarity. They play a crucial role in modulating and demodulating signals, ensuring efficient data transmission over long distances.

Audio Engineering

Active filters are indispensable in audio engineering, where they are used to shape sound frequencies, eliminate unwanted noise, and enhance audio quality. They are found in mixing consoles, amplifiers, and equalizers, contributing to superior sound production.

Medical Devices

In medical devices, active filters help in processing bio-signals, such as ECG and EEG, by filtering out noise and enhancing the accuracy of the readings. This ensures reliable diagnostics and monitoring of patients' health conditions.

Automotive Industry

Active filters are employed in automotive electronics to manage signal processing in systems like infotainment, navigation, and advanced driver-assistance systems (ADAS). They ensure clear communication and functionality within the vehicle's electronic systems.

Industrial Automation

In industrial automation, active filters are used to filter out electrical noise from machinery and equipment, ensuring accurate signal processing and control. They contribute to the reliability and efficiency of automated systems in manufacturing environments.