Overview
The AD7854BR is a high-performance, 12-bit analog-to-digital converter (ADC) produced by Analog Devices Inc. This component operates on a single supply voltage of either 3 V or 5 V, making it versatile for various applications. It features a sampling rate of up to 200 kSPS and is known for its low power consumption and flexible power management options, including automatic power-down after conversion. The AD7854BR is suitable for a range of applications requiring high accuracy and low power consumption.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 12 bits |
| Sampling Rate | Up to 200 kSPS |
| Supply Voltage | 3 V to 5 V |
| Power Consumption (Typical) | 15 mW @ 3 V, 1.3 mW @ 10 kSPS |
| Operating Temperature | –40°C to +85°C |
| Analog Input Range | 0 V to AVDD |
| Reference Voltage Range | 1.2 V to AVDD |
| Package Types | 28-Lead DIP, SOIC, SSOP |
Key Features
- Flexible power management options including automatic power-down after conversion.
- Low power consumption: 15 mW at 3 V and 1.3 mW at 10 kSPS for the AD7854, and 5.5 mW at 3 V and 650 μW at 10 kSPS for the AD7854L.
- Operates with reference voltages from 1.2 V to AVDD.
- Analog input ranges from 0 V to AVDD.
- Flexible parallel interface: 12-bit parallel or 8-bit parallel output.
Applications
- Battery-Powered Systems (Personal Digital Assistants, Medical Instruments, Mobile Communications).
- Pen Computers
- Instrumentation and Control Systems
- High Speed Modems
Q & A
- What is the resolution of the AD7854BR?
The AD7854BR has a resolution of 12 bits. - What are the operating supply voltage ranges for the AD7854BR?
The AD7854BR operates on a single supply voltage of either 3 V or 5 V. - What is the maximum sampling rate of the AD7854BR?
The maximum sampling rate is up to 200 kSPS. - What are the typical power consumption values for the AD7854BR?
The typical power consumption is 15 mW at 3 V and 1.3 mW at 10 kSPS for the AD7854, and 5.5 mW at 3 V and 650 μW at 10 kSPS for the AD7854L. - What are the package types available for the AD7854BR?
The AD7854BR is available in 28-Lead DIP, SOIC, and SSOP packages. - What is the operating temperature range for the AD7854BR?
The operating temperature range is –40°C to +85°C. - Can the AD7854BR operate with different reference voltages?
Yes, it can operate with reference voltages from 1.2 V to AVDD. - What are some common applications of the AD7854BR?
Common applications include battery-powered systems, pen computers, instrumentation and control systems, and high-speed modems. - Does the AD7854BR have automatic power-down features?
Yes, it includes automatic power-down after conversion to enhance power performance at slower throughput rates. - How does the AD7854BR handle analog input ranges?
The analog input range is from 0 V to AVDD.
