AD7874BRZ

Product Overview

Category

AD7874BRZ belongs to the category of analog-to-digital converters (ADCs).

Use

The AD7874BRZ is used to convert analog signals into digital data for processing in various applications.

Characteristics

• High precision: The AD7874BRZ offers high-resolution conversion, ensuring accurate representation of analog signals.
• Low power consumption: This ADC is designed to operate efficiently with minimal power consumption.
• Small package size: The AD7874BRZ comes in a compact package, making it suitable for space-constrained applications.
• Wide operating voltage range: It can operate within a wide voltage range, providing flexibility in different systems.
• Fast conversion speed: The AD7874BRZ offers fast conversion times, enabling real-time data acquisition.

Package and Quantity

The AD7874BRZ is available in a small outline integrated circuit (SOIC) package. It is typically sold in reels or tubes containing multiple units.

Specifications

• Resolution: 12 bits
• Sampling Rate: Up to 100 kilosamples per second (ksps)
• Input Voltage Range: ±10V
• Operating Voltage Range: 2.7V to 5.5V
• Power Consumption: 1.3mW (typical)
• Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The AD7874BRZ has a total of 16 pins, which are assigned specific functions as follows:

1. VDD: Power supply input
2. VREF: Reference voltage input
3. AGND: Analog ground
4. VIN1: Analog input channel 1
5. VIN2: Analog input channel 2
6. VIN3: Analog input channel 3
7. VIN4: Analog input channel 4
8. CS: Chip select input
9. SCLK: Serial clock input
10. SDATA: Serial data output
11. RDY/BSY: Ready/busy status output
12. DGND: Digital ground
13. DOUT1: Digital output channel 1
14. DOUT2: Digital output channel 2
15. DOUT3: Digital output channel 3
16. DOUT4: Digital output channel 4

Functional Features

• Simultaneous Sampling: The AD7874BRZ can sample all four analog input channels simultaneously, allowing for accurate synchronization of multiple signals.
• Serial Interface: It utilizes a serial interface for communication with the microcontroller or other digital devices, simplifying integration into various systems.
• Low Noise: The ADC incorporates noise reduction techniques to ensure high-quality conversion even in noisy environments.
• Programmable Gain Amplifier (PGA): The AD7874BRZ includes a PGA that allows for amplification of weak signals, enhancing sensitivity and dynamic range.

Advantages and Disadvantages

Advantages

• High precision conversion
• Low power consumption
• Compact package size
• Wide operating voltage range
• Fast conversion speed

Disadvantages

• Limited number of input channels (4 channels)
• Requires an external reference voltage source

Working Principles

The AD7874BRZ operates based on the successive approximation register (SAR) architecture. It converts analog input voltages into digital data by comparing the input signal against a reference voltage using a binary search algorithm. The conversion process is controlled by an internal clock and control logic.

Detailed Application Field Plans

The AD7874BRZ finds applications in various fields, including but not limited to: - Industrial automation - Data acquisition systems - Medical equipment - Instrumentation and measurement devices - Audio processing

Alternative Models

• AD7884BRZ: Similar to AD7874BRZ but with 14-bit resolution
• AD7894BRZ: Similar to AD7874BRZ but with 16-bit resolution
• AD7864BRZ: Similar to AD7874BRZ but with lower power consumption

These alternative models offer different resolutions and power consumption levels, providing options based on specific application requirements.

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