MAX7405ESA+ - English Editing Encyclopedia Entry

Product Overview

Category: Integrated Circuits (ICs)

Use: The MAX7405ESA+ is a high-performance, low-power, 8th-order elliptic switched-capacitor filter. It is designed for use in various audio and communication applications where precise filtering is required.

Characteristics: - High-performance: The MAX7405ESA+ offers excellent signal filtering capabilities with its 8th-order elliptic filter design. - Low-power: This integrated circuit operates on low power, making it suitable for battery-powered devices. - Switched-capacitor technology: The MAX7405ESA+ utilizes switched-capacitor technology to achieve accurate and efficient filtering.

Package: The MAX7405ESA+ is available in an 8-pin SOIC (Small Outline Integrated Circuit) package.

Essence: The essence of the MAX7405ESA+ lies in its ability to provide precise and reliable filtering for audio and communication applications.

Packaging/Quantity: The MAX7405ESA+ is typically sold in reels or tubes containing a quantity of 250 units per package.

Specifications

• Filter Order: 8th order
• Filter Type: Elliptic
• Supply Voltage Range: 2.7V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Input Signal Range: ±0.9V
• Output Signal Range: ±0.9V
• Total Harmonic Distortion: <0.1%
• Passband Ripple: 0.1dB
• Stopband Attenuation: 60dB

Pin Configuration

The MAX7405ESA+ features the following pin configuration:

```

---

| | --| VDD OUT |-- Pin 1: Power supply voltage (VDD) --| GND IN+ |-- Pin 2: Ground (GND) --| IN- REF |-- Pin 3: Negative input voltage (IN-) --| BP VOS |-- Pin 4: Bandpass filter output (BP) --| LP VDD |-- Pin 5: Lowpass filter output (LP) --| HP GND |-- Pin 6: Highpass filter output (HP) --| VREF IN- |-- Pin 7: Reference voltage (VREF) --| VDD GND |-- Pin 8: Power supply ground (GND) |___________| ```

Functional Features

The MAX7405ESA+ offers the following functional features:

1. High-precision filtering: The 8th-order elliptic filter design ensures accurate signal filtering, allowing for precise control of frequency response.
2. Low-power operation: The integrated circuit operates on low power, making it suitable for battery-powered devices and energy-efficient applications.
3. Switched-capacitor technology: By utilizing switched-capacitor technology, the MAX7405ESA+ achieves efficient filtering with minimal external components.
4. Wide supply voltage range: The device can operate within a wide supply voltage range of 2.7V to 5.5V, providing flexibility in various applications.

Advantages and Disadvantages

Advantages: - High-performance filtering capabilities - Low-power operation - Compact and easy-to-use package - Wide supply voltage range

Disadvantages: - Limited to audio and communication applications - Requires careful consideration of input and output signal levels

Working Principles

The MAX7405ESA+ operates based on the principles of switched-capacitor filtering. It utilizes a combination of capacitors and switches to create an analog filter that provides precise frequency response control. The elliptic filter design allows for sharp roll-off characteristics and high stopband attenuation.

The input signal is applied to the IN+ pin, while the reference voltage is provided to the VREF pin. The filtered outputs are available at the BP, LP, and HP pins, corresponding to bandpass, lowpass, and highpass filter responses, respectively.

Application Field Plans

The MAX7405ESA+ finds applications in various audio and communication systems that require accurate filtering. Some potential application fields include:

1. Audio processing: The device can be used in audio equalizers, sound processors, and audio effects units to achieve precise frequency response shaping.
2. Communication systems: It can be employed in wireless communication devices, such as transceivers and base stations, to enhance signal quality and reduce interference.
3. Instrumentation: The MAX7405ESA+ can be utilized in test and measurement equipment to perform signal conditioning and filtering tasks.
4. Industrial control systems: It can be integrated into industrial control systems to filter out unwanted noise and disturbances from sensor signals.

Alternative Models

For users seeking alternative options, the following models provide similar functionality to the MAX7405ESA+:

1.