Overview
The AD7892BR-2 is a high-speed, low-power, 12-bit analog-to-digital converter (ADC) produced by Analog Devices Inc. This component is part of the AD7892 series, which is fabricated using Analog Devices’ Linear Compatible CMOS (LC2MOS) process. This process combines precision bipolar circuits with low-power CMOS logic, making the AD7892BR-2 ideal for low-power and portable applications.
The AD7892BR-2 operates from a single +5 V supply, consuming 60 mW typically, and features a flexible interface arrangement with both parallel and serial interfaces. This allows easy connection to microprocessors, microcontrollers, and digital signal processors.
Key Specifications
| Parameter | Value | Notes |
|---|---|---|
| Resolution | 12 bits | |
| Throughput Rate | 500 kSPS | |
| Conversion Time | 1.47 µs | For AD7892-3, but similar performance for AD7892BR-2 |
| Track/Hold Acquisition Time | 200 ns | |
| Analog Input Range | 0 V to +2.5 V | |
| Supply Voltage | +5 V ± 5% | |
| Power Consumption | 60 mW (typical) | |
| Operating Temperature | –40°C to +85°C | |
| Package Type | 24-lead SOIC |
Key Features
- High-Speed Conversion: The AD7892BR-2 features a fast conversion time of 1.47 µs and a throughput rate of 500 kSPS, making it suitable for high-speed applications.
- Low Power Consumption: Operating from a single +5 V supply, the AD7892BR-2 consumes only 60 mW, ideal for battery-powered and portable devices.
- Flexible Interface: The component offers both parallel and serial data output formats, allowing easy connection to various microprocessors, microcontrollers, and digital signal processors.
- Internal Reference and Track/Hold: The AD7892BR-2 includes an internal +2.5 V reference and an on-chip track/hold amplifier, enhancing its functionality and reducing external component requirements.
- Overvoltage Protection: Although specific to AD7892-1 and AD7892-3, the series generally offers overvoltage protection on analog inputs, ensuring robustness against input voltage spikes.
Applications
- Portable and Battery-Powered Devices: The low power consumption makes the AD7892BR-2 suitable for use in portable medical devices, handheld instruments, and other battery-powered equipment.
- Industrial Automation: Its high-speed conversion and robust interface capabilities make it a good fit for industrial control systems and data acquisition systems.
- Medical Devices: The component’s precision and low noise characteristics are beneficial in medical diagnostic equipment and patient monitoring systems.
- Aerospace and Defense: The AD7892BR-2’s wide operating temperature range and reliability make it suitable for use in aerospace and defense applications.
Q & A
- What is the resolution of the AD7892BR-2?
The AD7892BR-2 has a resolution of 12 bits.
- What is the throughput rate of the AD7892BR-2?
The throughput rate of the AD7892BR-2 is 500 kSPS.
- What is the conversion time of the AD7892BR-2?
The conversion time is approximately 1.47 µs, similar to other models in the AD7892 series.
- What is the analog input range of the AD7892BR-2?
The analog input range is from 0 V to +2.5 V.
- What is the supply voltage for the AD7892BR-2?
The supply voltage is +5 V ± 5%.
- How much power does the AD7892BR-2 consume?
The AD7892BR-2 consumes 60 mW typically.
- What is the operating temperature range of the AD7892BR-2?
The operating temperature range is from –40°C to +85°C.
- What types of interfaces does the AD7892BR-2 support?
The AD7892BR-2 supports both parallel and serial data output formats.
- Does the AD7892BR-2 have internal overvoltage protection?
While the AD7892BR-2 itself does not have specified overvoltage protection, other models in the series do. It is always best to refer to the specific datasheet for detailed specifications.
- What are some common applications of the AD7892BR-2?
The AD7892BR-2 is commonly used in portable and battery-powered devices, industrial automation, medical devices, and aerospace and defense applications.
