Analog Devices Inc.
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AD7948BRZ
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AD7948BRZ

Product Overview

Category

AD7948BRZ belongs to the category of Analog-to-Digital Converters (ADCs).

Use

The AD7948BRZ is used to convert analog signals into digital data for various applications.

Characteristics

  • High-resolution: The AD7948BRZ offers a resolution of 12 bits, ensuring accurate conversion of analog signals.
  • Fast conversion rate: With a maximum conversion rate of 1 MSPS (Mega Samples Per Second), it enables quick and efficient signal processing.
  • Low power consumption: The device operates at low power, making it suitable for battery-powered applications.
  • Wide input voltage range: It can handle a wide range of input voltages, allowing flexibility in signal acquisition.
  • Serial interface: The AD7948BRZ utilizes a serial interface (SPI) for communication with microcontrollers or other digital devices.

Package

The AD7948BRZ comes in a small outline package (SOIC) with 16 pins.

Essence

The essence of the AD7948BRZ lies in its ability to accurately convert analog signals into digital data, facilitating further processing and analysis.

Packaging/Quantity

The AD7948BRZ is typically packaged in reels containing 250 units per reel.

Specifications

  • Resolution: 12 bits
  • Conversion Rate: Up to 1 MSPS
  • Input Voltage Range: ±VREF
  • Power Supply: 2.7V to 5.25V
  • Operating Temperature Range: -40°C to +85°C
  • Interface: Serial Peripheral Interface (SPI)
  • Package Type: SOIC-16

Detailed Pin Configuration

The AD7948BRZ has the following pin configuration:

| Pin Number | Pin Name | Description | |------------|----------|-------------| | 1 | VDD | Power supply voltage | | 2 | VREF | Reference voltage input | | 3 | AGND | Analog ground | | 4 | REFOUT | Reference output | | 5 | VIN(+) | Positive analog input | | 6 | VIN(-) | Negative analog input | | 7 | DGND | Digital ground | | 8 | SCLK | Serial clock input | | 9 | SDI | Serial data input | | 10 | CS | Chip select input | | 11 | SDO | Serial data output | | 12 | RDY/BSY | Ready/busy indicator | | 13-16 | NC | No connection |

Functional Features

  1. High-resolution conversion: The AD7948BRZ provides a 12-bit resolution, ensuring accurate representation of analog signals.
  2. Fast conversion rate: With a maximum conversion rate of 1 MSPS, it enables real-time signal processing.
  3. Low power consumption: The device operates at low power, making it suitable for power-constrained applications.
  4. Flexible input voltage range: The AD7948BRZ can handle a wide range of input voltages, accommodating various signal sources.
  5. Serial interface: It utilizes the SPI interface, allowing easy integration with microcontrollers and other digital devices.

Advantages and Disadvantages

Advantages

  • High-resolution conversion for accurate signal representation.
  • Fast conversion rate enables real-time processing.
  • Low power consumption for energy-efficient operation.
  • Wide input voltage range provides flexibility in signal acquisition.
  • Serial interface simplifies communication with digital devices.

Disadvantages

  • Limited to 12-bit resolution, which may not be sufficient for certain high-precision applications.
  • Requires external reference voltage for accurate conversion.

Working Principles

The AD7948BRZ operates by sampling the analog input voltage and converting it into a digital representation. It utilizes an internal successive approximation register (SAR) architecture to perform the conversion. The analog input voltage is compared to a reference voltage, and the SAR iteratively approximates the digital code that best represents the input voltage. The resulting digital code is then output through the serial interface.

Detailed Application Field Plans

The AD7948BRZ can be applied in various fields, including but not limited to: 1. Industrial automation: Used for monitoring and control systems that require accurate analog-to-digital conversion. 2. Medical devices: Enables precise measurement and analysis of physiological signals. 3. Data acquisition systems: Facilitates the digitization of analog signals for further processing and analysis. 4. Instrumentation and measurement equipment: Provides high-resolution conversion for accurate measurements. 5. Audio processing: Used in audio equipment for digitizing analog audio signals.

Detailed and Complete Alternative Models

  1. AD7947: Similar to AD7948BRZ but with 10-bit resolution.
  2. AD7949: Similar to AD7948BRZ but with

Seznam 10 běžných otázek a odpovědí souvisejících s aplikací AD7948BRZ v technických řešeních

Sure! Here are 10 common questions and answers related to the application of AD7948BRZ in technical solutions:

  1. Q: What is AD7948BRZ? A: AD7948BRZ is a 14-bit, 8-channel analog-to-digital converter (ADC) manufactured by Analog Devices.

  2. Q: What is the supply voltage range for AD7948BRZ? A: The supply voltage range for AD7948BRZ is typically between 2.7V and 5.25V.

  3. Q: How many analog input channels does AD7948BRZ have? A: AD7948BRZ has 8 analog input channels, allowing you to convert up to 8 different analog signals.

  4. Q: What is the maximum sampling rate of AD7948BRZ? A: The maximum sampling rate of AD7948BRZ is 250 kilosamples per second (ksps).

  5. Q: Does AD7948BRZ have an internal reference voltage? A: No, AD7948BRZ does not have an internal reference voltage. An external reference voltage must be provided.

  6. Q: Can AD7948BRZ operate in both single-ended and differential modes? A: Yes, AD7948BRZ can operate in both single-ended and differential modes, depending on your application requirements.

  7. Q: What is the resolution of AD7948BRZ? A: AD7948BRZ has a resolution of 14 bits, providing high precision in converting analog signals to digital values.

  8. Q: Is AD7948BRZ suitable for low-power applications? A: Yes, AD7948BRZ is designed for low-power applications, consuming minimal power during operation.

  9. Q: Does AD7948BRZ have any built-in digital filters? A: No, AD7948BRZ does not have any built-in digital filters. Additional external filtering may be required based on your application needs.

  10. Q: What is the package type of AD7948BRZ? A: AD7948BRZ is available in a small form factor 16-lead TSSOP (Thin Shrink Small Outline Package) package.

Please note that these answers are general and may vary depending on the specific datasheet and application requirements.