AFE4404YZPT

Overview

Category: Integrated Circuit (IC)

Use: Biomedical Signal Acquisition and Processing

Characteristics: - High-resolution Analog Front-End (AFE) - Designed for medical applications - Enables accurate measurement of physiological signals - Provides amplification, filtering, and digitization of signals - Supports multiple sensor inputs

Package: - 48-pin LQFP (Quad Flat Package) - Lead-free and RoHS compliant

Essence: The AFE4404YZPT is a highly integrated IC that serves as an Analog Front-End (AFE) for biomedical signal acquisition and processing. It offers essential functionalities required for accurate measurement of physiological signals in medical applications.

Packaging/Quantity: - The AFE4404YZPT is available in a 48-pin LQFP package. - Each package contains one AFE4404YZPT IC.

Specifications

• Resolution: 24 bits
• Input Channels: 4 differential or 7 single-ended
• Sampling Rate: Up to 1 kSPS (kilo samples per second)
• Power Supply: 2.7V to 3.6V
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The AFE4404YZPT features a 48-pin LQFP package with the following pin configuration:

Pin Number | Pin Name | Description -----------|----------|------------- 1 | AVDD | Analog power supply 2 | DVDD | Digital power supply 3 | AGND | Analog ground 4 | DGND | Digital ground 5 | REF | Reference voltage input 6 | CLK | Clock input 7 | RESET | Reset input 8-15 | AIN0-AIN7| Analog input channels 16-23 | AIN8-AIN15| Analog input channels 24 | DVDDIO | Digital I/O power supply 25-32 | DIO0-DIO7| Digital I/O pins 33-40 | DIO8-DIO15| Digital I/O pins 41 | DRDY | Data ready output 42 | PDN | Power-down control input 43 | MCLK | Master clock input 44 | SDA | Serial data interface 45 | SCL | Serial clock interface 46 | INT1 | Interrupt output 1 47 | INT2 | Interrupt output 2 48 | NC | No connection

Functional Features

• High-resolution ADC: The AFE4404YZPT provides a 24-bit analog-to-digital converter (ADC) for accurate signal digitization.
• Programmable Gain Amplifier (PGA): Allows amplification of weak physiological signals to desired levels.
• Integrated Filters: Provides configurable low-pass and high-pass filters for signal conditioning.
• Flexible Input Configuration: Supports differential or single-ended sensor inputs, enabling compatibility with various sensors.
• Digital Interface: Offers a serial data interface (SDA/SCL) for easy communication with microcontrollers or other digital devices.

Advantages and Disadvantages

Advantages: - High resolution enables precise measurement of physiological signals. - Integrated functionality reduces the need for external components. - Flexible input configuration supports different sensor types. - Low-power consumption for energy-efficient applications. - RoHS compliant, ensuring environmental friendliness.

Disadvantages: - Limited number of input channels compared to some other AFE ICs. - Requires external microcontroller or digital device for complete system integration.

Working Principles

The AFE4404YZPT operates by receiving analog signals from biomedical sensors and processing them through amplification, filtering, and digitization stages. The analog input channels are programmable, allowing the user to configure the desired gain and filter settings. The digitized signals are then made available for further processing by a microcontroller or other digital devices.

Detailed Application Field Plans

The AFE4404YZPT finds applications in various medical and healthcare fields, including but not limited to: - Electrocardiography (ECG) monitoring - Pulse oximetry - Blood pressure measurement - Electromyography (EMG) - Electroencephalography (EEG)

Its high resolution, flexible input configuration, and integrated functionality make it suitable for accurate and reliable acquisition of physiological signals in these applications.

Detailed and Complete Alternative Models

1. AFE4400YZPT: Similar to AFE4404YZPT, but with 8 differential or 15 single-ended input channels.
2. AFE4490YZPT: AFE IC specifically designed for pulse oximetry applications, offering enhanced performance in measuring blood oxygen saturation levels.
3. AFE4300YZPT