ADS1299-4PAG

Product Overview

Category: Integrated Circuits (ICs)

Use: The ADS1299-4PAG is a high-resolution, low-power, 24-bit analog-to-digital converter (ADC) designed for biomedical applications. It is specifically used for measuring bioelectric signals such as electrocardiograms (ECG), electromyograms (EMG), and electroencephalograms (EEG).

Characteristics: - High resolution: 24-bit ADC provides accurate measurement of small bioelectric signals. - Low power consumption: Designed to operate with minimal power requirements, making it suitable for portable and battery-powered devices. - Noise performance: Offers excellent noise performance, ensuring reliable signal acquisition. - Flexible packaging: Available in a small form factor package, allowing for easy integration into various medical devices. - Multiple channels: The ADS1299-4PAG supports up to four simultaneous channels, enabling multi-channel bioelectric signal acquisition.

Package: The ADS1299-4PAG is available in a 48-pin TQFP (Thin Quad Flat Package) package.

Essence: The ADS1299-4PAG is an essential component in biomedical devices that require precise and reliable measurement of bioelectric signals. Its high resolution, low power consumption, and flexible packaging make it ideal for a wide range of medical applications.

Packaging/Quantity: The ADS1299-4PAG is typically sold in reels containing multiple units. The exact quantity per reel may vary depending on the supplier.

Specifications

• Resolution: 24 bits
• Input Voltage Range: ±2.5V
• Sampling Rate: Up to 32 kSPS (samples per second)
• Power Supply: 2.7V to 5.25V
• Operating Temperature Range: -40°C to +85°C
• Input Impedance: >1012 Ω
• Common-Mode Rejection Ratio (CMRR): >110 dB

Pin Configuration

The ADS1299-4PAG features a 48-pin TQFP package with the following pin configuration:

For a detailed pinout description, please refer to the datasheet provided by the manufacturer.

Functional Features

1. High-Resolution ADC: The 24-bit ADC ensures accurate measurement of bioelectric signals, capturing even the smallest details.
2. Low Power Consumption: Designed for battery-powered devices, the ADS1299-4PAG minimizes power consumption without compromising performance.
3. Programmable Gain Amplifier (PGA): Allows for amplification of weak bioelectric signals, enhancing signal quality and flexibility.
4. Integrated Filters: Built-in digital filters help remove noise and unwanted artifacts from the acquired signals, improving signal fidelity.
5. SPI Interface: The ADS1299-4PAG communicates with the microcontroller or host device using a Serial Peripheral Interface (SPI), enabling easy integration into existing systems.

Advantages and Disadvantages

Advantages: - High resolution for accurate signal measurement. - Low power consumption for extended battery life. - Flexible packaging options for easy integration. - Multiple channels for simultaneous signal acquisition. - Excellent noise performance for reliable data capture.

Disadvantages: - Limited input voltage range may not be suitable for certain applications requiring higher voltage measurements. - Requires external components for proper signal conditioning and filtering.

Working Principles

The ADS1299-4PAG operates by converting analog bioelectric signals into digital data. It utilizes a high-resolution ADC to sample and quantize the input signals. The programmable gain amplifier (PGA) allows for signal amplification, ensuring optimal signal-to-noise ratio. Integrated digital filters help remove noise and unwanted artifacts from the acquired signals. The converted digital data is then transmitted to a microcontroller or host device via the SPI interface for further processing and analysis.

Application Field Plans

The ADS1299-4PAG finds extensive use in various biomedical applications, including but not limited to: - Electrocardiography (ECG) devices for monitoring heart activity. - Electromyography (EMG) devices for measuring muscle electrical activity. - Electroencephalography (EEG) devices for recording brainwave patterns. - Sleep monitoring systems for analyzing sleep stages and patterns. - Portable health monitoring devices for continuous vital sign tracking.

Alternative Models

1. ADS1299-4PAGR: Similar to ADS1299-4PAG but with an extended temperature range.
2. ADS1298-6PAG: A variant with six channels instead of four, allowing for additional signal acquisition.
3. ADS1294-8PAG: An eight-channel version suitable for applications requiring higher channel count.

These alternative models offer similar functionality and can be considered based on specific application requirements.

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