MAX262 Active Filter Module Programmable Filter High Low Pass Bandpass

Features: 

1. with a filter design software, with a microprocessor interface;

2. can control 64 different center frequency f0, 128 different quality factor Q and 4 kinds of work patterns;

3. the center frequency f0 and quality factor Q can be independently programmed;

4. can provide three clock input (external clock input, RC oscillator and crystal devices);

5. the central frequency f0 range of 1Hz ~ 140kHz, the maximum input clock 4MHz;

6. the filter circuit structure is simple, less external components, small size;

7. can achieve low-pass, high-pass, band-pass, band-stop and all-pass filter;

8. can be A, B single-stage input and output, but also AB cascade of two levels of input and output;

9. Product size: 50*50MM

10. Product weight: 22 grams

The main chip pin description:

V +  - positive power input.

V-  -Negative power input.

GND - Analog ground.

CLKA - external crystal oscillator and filter A part of the clock input, within the filter, the clock frequency is divided by 2.

CLKB - the clock input to filter B, also within the filter, the clock frequency is divided by 2.

CLKOUT - Clock output for crystal oscillator and R-C oscillation.

OSCOUT - Connects to a crystal or R-C oscillator for self-synchronization.

INA, INB - The signal input of the filter.

BPA, BPB - band-pass filter output.

LPA, LPB - low-pass filter output.

HPA, HPB - high-pass, with resistance, all-pass filter output.

WR - Writing to the active input. When connected to V +, the data can be entered into a programmable memory through the logical interface to complete the filter mode, f0 and Q settings. In addition, it can receive TTL level signals, and the rising edge latch input data.

A0, A1, A2, A3 - address input, can be used to complete the filter mode, f0 and Q of the corresponding settings.

D0, D1 - Data input, can be used to set the corresponding bits f0 and Q.

OP OUT - The amplifier output of the MAX262.

OP IN - The inverting input of the MAX262 amplifier.

Packing list:

Program-controlled filter * 1

MAX262 Active Filter Module Programmable High/Low/Band-Pass Filter

Versatile Programmable Filtering for Precision Applications

The MAX262 Active Filter Module is a high-performance, programmable filtering solution designed for engineers, students, and hobbyists who require flexible signal conditioning. Built around the MAX262 integrated circuit, this module can be configured as a low-pass, high-pass, or band-pass filter, making it ideal for applications in audio processing, instrumentation, communication systems, and educational experiments.

With its ability to adjust frequency response and quality factor electronically, it allows users to fine-tune filter characteristics without physically altering circuit components. This makes it an efficient and versatile choice for testing, prototyping, and signal analysis.

Fully Programmable Filter Control

Unlike traditional passive filters, the MAX262 module allows full electronic control of key parameters. You can adjust the center frequency (f₀), quality factor (Q), and filter mode via microcontroller or manual configuration. These programmable features make it easy to adapt the same board for different use cases, whether for signal isolation, noise suppression, or waveform shaping.

Its dual second-order structure can also be cascaded to create higher-order filters, providing excellent precision and flexibility for advanced signal processing needs.

Multi-Mode Functionality: Low-Pass, High-Pass, and Band-Pass

The module supports multiple filtering modes including low-pass, high-pass, and band-pass, as well as other advanced configurations such as notch and all-pass, depending on the setup. This allows for wide-ranging use—from cutting unwanted noise in low-frequency circuits to isolating specific frequencies in complex waveforms.

The mode can be easily changed through pin selection or programming, offering instant adaptability during testing or product development.

High Precision and Stable Performance

Built with high-quality components, the MAX262 Active Filter Module ensures stable operation and accurate signal processing. Its internal switched-capacitor design provides precision filtering performance with minimal drift or distortion, even under changing environmental conditions.

The module maintains excellent linearity and consistent cutoff behavior, making it suitable for sensitive measurement and audio applications where accuracy is critical.

Ease of Integration

The module is designed with a compact and clearly labeled layout for effortless integration into existing circuits or prototype systems. Input and output terminals are arranged for simple wiring, and power pins are compatible with standard laboratory supplies.

This plug-and-play design allows it to fit seamlessly into breadboards, test benches, or permanent project enclosures, saving development time while providing professional-grade performance.

Ideal for Audio, Communication, and Instrumentation Systems

Because of its programmable frequency range and flexible response options, the MAX262 module is widely used in audio filtering, tone control circuits, RF communication filters, signal conditioning for sensors, and laboratory equipment.

Whether you’re building a high-fidelity sound equalizer, designing communication signal filters, or experimenting with analog processing, this module provides precision and adaptability without the need for complex redesigns.

Safe and Efficient Operation

The module features built-in protection against overvoltage and excessive current draw, ensuring reliable performance during continuous use. Its low power consumption makes it compatible with portable or battery-powered projects, while its wide operating voltage range ensures compatibility with various systems.

Why Choose the MAX262 Active Filter Module

This programmable filter module offers far more flexibility than traditional fixed passive designs. You can easily modify filter behavior through programming, saving both time and cost in design iterations. It combines accuracy, efficiency, and ease of use—making it an excellent choice for professionals, educators, and electronics enthusiasts alike.

Its reconfigurable nature allows you to use a single module across multiple projects—making it a smart, long-term investment for any electronics workspace.

Conclusion

The MAX262 Active Filter Module Programmable High/Low/Band-Pass Filter delivers precise, reliable, and versatile signal filtering for a wide range of applications. Offering programmable control, stable performance, and compact design, it’s a go-to solution for modern electronic development and research.

Whether you’re refining audio signals, designing sensor circuits, or building communication filters, this module gives you the flexibility and performance needed to bring your projects to life with precision and efficiency.

Meta Tag Description
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