AD7191BRUZ

Product Overview

Category

AD7191BRUZ belongs to the category of analog-to-digital converters (ADCs).

Use

The AD7191BRUZ is used for converting analog signals into digital data. It is commonly employed in various applications that require precise and accurate conversion of analog signals, such as industrial automation, medical equipment, and scientific instruments.

Characteristics

• High resolution: The AD7191BRUZ offers a resolution of up to 24 bits, ensuring accurate conversion of analog signals.
• Low noise: It provides low noise performance, resulting in high-quality digital output.
• Low power consumption: The device operates at low power, making it suitable for battery-powered applications.
• Flexible input configuration: The ADC supports various input configurations, including differential and single-ended modes.
• On-chip features: It incorporates on-chip features like programmable gain amplifier (PGA) and reference voltage generator.

Package

AD7191BRUZ is available in a small outline integrated circuit (SOIC) package.

Essence

The essence of AD7191BRUZ lies in its ability to convert analog signals with high precision and low noise, providing reliable digital data for further processing.

Packaging/Quantity

The AD7191BRUZ is typically packaged in reels or tubes, containing a specified quantity of devices per package.

Specifications

• Resolution: Up to 24 bits
• Input Voltage Range: ±VREF
• Sampling Rate: Up to 250 kSPS
• Power Supply: 2.7 V to 5.25 V
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The AD7191BRUZ has a total of 20 pins, which are assigned specific functions. Here is the detailed pin configuration:

1. AVDD: Analog power supply
2. AGND: Analog ground
3. REFIN1(+)/REFIN1(-): External reference voltage inputs
4. REFIN2(+)/REFIN2(-): External reference voltage inputs
5. AIN1(+)/AIN1(-): Analog input channels
6. AIN2(+)/AIN2(-): Analog input channels
7. AIN3(+)/AIN3(-): Analog input channels
8. AIN4(+)/AIN4(-): Analog input channels
9. DVDD: Digital power supply
10. DGND: Digital ground
11. DOUT/RDY: Data output or ready signal
12. SCLK: Serial clock input
13. DIN: Serial data input
14. CS: Chip select input
15. RDY: Ready signal output
16. EXTCLOCK: External clock input
17. REFOUT: Reference voltage output
18. VBIAS: Bias voltage output
19. VDRIVE: Drive voltage output
20. RESET: Reset input

Functional Features

• Programmable Gain Amplifier (PGA): The AD7191BRUZ incorporates a PGA that allows the user to adjust the gain of the analog input signal.
• On-Chip Reference Voltage Generator: It includes an on-chip reference voltage generator, eliminating the need for an external reference voltage source.
• Serial Interface: The ADC utilizes a serial interface for communication with microcontrollers or other digital devices.
• Conversion Modes: It supports various conversion modes, including single conversion, continuous conversion, and burst mode.

Advantages and Disadvantages

Advantages

• High resolution ensures accurate conversion of analog signals.
• Low noise performance results in high-quality digital output.
• Flexible input configuration allows for versatile usage.
• Low power consumption makes it suitable for battery-powered applications.
• On-chip features reduce the need for external components.

Disadvantages

• Limited sampling rate compared to some other ADCs.
• Requires external components for certain functionalities, such as reference voltage inputs.

Working Principles

The AD7191BRUZ operates based on the principle of successive approximation. It samples the analog input signal, applies a programmable gain, and converts it into digital data using an internal ADC core. The converted digital data is then output through the serial interface.

Detailed Application Field Plans

The AD7191BRUZ finds applications in various fields, including: - Industrial automation: Used for precise measurement and control systems. - Medical equipment: Employed in medical devices requiring accurate data acquisition. - Scientific instruments: Utilized in scientific research instruments for data analysis and processing.

Detailed and Complete Alternative Models

Some alternative models to AD7191BRUZ include: - AD7791: A lower-resolution ADC with similar features. - ADS124S08: A high-resolution ADC with integrated multiplexers. - MCP3424: A low-power ADC with I2C interface.

These alternative models offer different specifications and features, allowing users to choose the most suitable