ADS7864YB/250

Product Overview

Category: Integrated Circuits (ICs)

Use: The ADS7864YB/250 is a high-performance, 12-bit analog-to-digital converter (ADC) designed for precision measurement applications. It offers four simultaneous sampling channels and operates at a maximum conversion rate of 250 kilosamples per second (ksps).

Characteristics: - High-resolution ADC - Simultaneous sampling of four channels - Fast conversion rate of 250 ksps - Precision measurement capabilities

Package: The ADS7864YB/250 is available in a small form factor package, making it suitable for space-constrained applications. It comes in a 48-pin quad flat package (QFP).

Essence: The essence of the ADS7864YB/250 lies in its ability to accurately convert analog signals into digital data, enabling precise measurements in various applications.

Packaging/Quantity: The ADS7864YB/250 is typically sold in reels or trays, with a quantity of 250 units per reel/tray.

Specifications

• Resolution: 12 bits
• Number of Channels: 4
• Conversion Rate: Up to 250 ksps
• Input Voltage Range: ±Vref
• Supply Voltage: 2.7V to 5.25V
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The ADS7864YB/250 features a 48-pin QFP package with the following pin configuration:

Pin 1: VREF- Pin 2: VREF+ Pin 3: AGND Pin 4: AVDD Pin 5: REFOUT ... Pin 48: DGND

For a detailed pinout diagram, please refer to the datasheet.

Functional Features

• Simultaneous Sampling: The ADS7864YB/250 can sample all four channels simultaneously, allowing for accurate measurements of multiple signals.
• High-Speed Conversion: With a maximum conversion rate of 250 ksps, the ADC can quickly convert analog signals into digital data.
• Low Power Consumption: The device is designed to operate with low power consumption, making it suitable for battery-powered applications.
• Flexible Input Range: The input voltage range can be set using the VREF+ and VREF- pins, allowing for customization based on specific application requirements.

Advantages and Disadvantages

Advantages: - High-resolution conversion - Simultaneous sampling of multiple channels - Fast conversion rate - Low power consumption

Disadvantages: - Limited number of channels (4) - Requires external voltage reference

Working Principles

The ADS7864YB/250 utilizes a successive approximation register (SAR) architecture to convert analog signals into digital data. It employs an internal voltage reference and a sample-and-hold circuit to accurately capture the input signal. The ADC then performs a series of comparisons to determine the digital representation of the analog input.

Detailed Application Field Plans

The ADS7864YB/250 is well-suited for various precision measurement applications, including: - Data acquisition systems - Industrial automation - Medical instrumentation - Test and measurement equipment - Audio processing

Detailed and Complete Alternative Models

• ADS7863YB/250: Similar to the ADS7864YB/250, but with three simultaneous sampling channels instead of four.
• ADS7865YB/250: Similar to the ADS7864YB/250, but with five simultaneous sampling channels instead of four.
• ADS7866YB/250: Similar to the ADS7864YB/250, but with six simultaneous sampling channels instead of four.

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

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