AD9248BSTZ-20

Product Overview

Category

AD9248BSTZ-20 belongs to the category of analog-to-digital converters (ADCs).

Use

This product is used for converting analog signals into digital data, making it suitable for various applications in industries such as telecommunications, medical imaging, and industrial automation.

Characteristics

• High-speed sampling rate: The AD9248BSTZ-20 offers a maximum sampling rate of 20 MSPS, allowing for accurate capture of fast-changing analog signals.
• High resolution: With a 12-bit resolution, this ADC provides precise digital representation of the input analog signal.
• Low power consumption: The AD9248BSTZ-20 is designed to operate with low power consumption, making it energy-efficient.
• Wide input voltage range: It can handle a wide range of input voltages, enabling flexibility in different applications.

Package

The AD9248BSTZ-20 comes in a small form factor package, making it suitable for space-constrained designs. It is available in a 48-lead LQFP package.

Essence

The essence of the AD9248BSTZ-20 lies in its ability to accurately convert analog signals into digital data with high speed and resolution, while consuming minimal power.

Packaging/Quantity

The AD9248BSTZ-20 is typically sold in reels or trays, with a quantity of 250 units per reel/tray.

Specifications

• Resolution: 12 bits
• Sampling Rate: Up to 20 MSPS
• Input Voltage Range: ±5V
• Power Supply: +3.3V
• Power Consumption: 150mW (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The AD9248BSTZ-20 has a total of 48 pins. Here is a detailed pin configuration:

1. VREFP: Positive reference voltage input
2. VREFN: Negative reference voltage input
3. AGND: Analog ground
4. VIN(+) and VIN(-): Differential analog input
5. AVDD: Analog power supply
6. DVDD: Digital power supply
7. DGND: Digital ground
8. CLK: Clock input
9. CS: Chip select input
10. D[11:0]: Digital output data bus

(Note: The remaining pins are not listed here for brevity.)

Functional Features

• High-speed conversion: The AD9248BSTZ-20 can convert analog signals into digital data at a maximum rate of 20 MSPS, allowing for real-time processing of high-frequency signals.
• Low noise performance: This ADC offers excellent signal-to-noise ratio (SNR) and spurious-free dynamic range (SFDR), ensuring accurate digitization of the input signal.
• Flexible interface options: It supports various digital interface standards such as SPI and parallel, providing compatibility with different microcontrollers or processors.
• Power-down mode: The AD9248BSTZ-20 includes a power-down mode to conserve power when not in use.

Advantages and Disadvantages

Advantages

• High-speed sampling rate enables capturing fast-changing signals accurately.
• High resolution provides precise digital representation of analog signals.
• Low power consumption makes it energy-efficient.
• Wide input voltage range allows for flexibility in different applications.
• Small form factor package suits space-constrained designs.

Disadvantages

• Limited resolution compared to higher-end ADCs.
• May require additional external components for optimal performance in certain applications.

Working Principles

The AD9248BSTZ-20 operates based on the successive approximation register (SAR) architecture. It samples the analog input signal and converts it into a digital representation using a comparator and a digital-to-analog converter (DAC). The converted digital data is then output through the digital interface.

Detailed Application Field Plans

The AD9248BSTZ-20 can be applied in various fields, including:

1. Telecommunications: Used for digitizing analog signals in communication systems, such as base stations and wireless transceivers.
2. Medical Imaging: Enables precise conversion of medical imaging signals, such as ultrasound or X-ray, into digital format for further processing and analysis.
3. Industrial Automation: Suitable for industrial control systems that require accurate measurement and monitoring of analog signals, such as temperature or pressure sensors.

Detailed and Complete Alternative Models

1. AD9648: A higher-resolution ADC with 14-bit resolution and similar features to the AD9248BSTZ-20.
2. AD9250: Offers a lower sampling rate of 10 MSPS but provides a higher resolution of 16 bits.
3. AD9265: Provides a higher sampling rate of 80 MSPS and 12-bit resolution, suitable for applications requiring faster data acquisition.

(Note: This list is not exhaustive and there are other alternative models available from different