Overview
The AD7892AR-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 AD7892 ideal for applications requiring high performance and low power consumption.
Key Specifications
| Specification | Value |
|---|---|
| Resolution | 12 bits |
| Throughput Rate | 500 kSPS |
| Conversion Time | 1.47 µs (AD7892-3), but 500 kSPS for AD7892-2 |
| Track/Hold Acquisition Time | 200 ns |
| Analog Input Range | 0 V to +2.5 V |
| Supply Voltage | Single +5 V |
| Power Consumption | 60 mW (typical) |
| Operating Temperature | –40°C to +85°C |
| Package Type | 24-lead SOIC (0.295, 7.50mm Width) |
| Interface | Parallel and serial interfaces |
Key Features
- High-speed successive approximation ADC with a conversion time of 1.47 µs (for AD7892-3, but 500 kSPS for AD7892-2)
- On-chip track/hold amplifier and internal +2.5 V reference
- Overvoltage protection on analog inputs, allowing up to ±17 V or ±7 V without damage
- Flexible interface options including parallel and serial data output formats
- Low power consumption, making it suitable for portable and battery-powered applications
- Operating from a single +5 V supply
Applications
The AD7892AR-2 is suitable for a variety of applications that require high-speed, low-power analog-to-digital conversion. These include:
- Portable and battery-powered devices due to its low power consumption
- Industrial control systems where high-speed data acquisition is necessary
- Medical devices requiring precise and fast analog-to-digital conversion
- Aerospace and defense applications where the component’s robustness and wide operating temperature range are beneficial
Q & A
- What is the resolution of the AD7892AR-2?
The AD7892AR-2 has a resolution of 12 bits. - What is the throughput rate of the AD7892AR-2?
The throughput rate of the AD7892AR-2 is 500 kSPS. - What is the conversion time of the AD7892AR-2?
The conversion time for the AD7892-2 is based on a 500 kSPS throughput rate, with a conversion time of approximately 2 µs. - What is the analog input range of the AD7892AR-2?
The analog input range of the AD7892AR-2 is 0 V to +2.5 V. - What is the supply voltage for the AD7892AR-2?
The AD7892AR-2 operates from a single +5 V supply. - What are the interface options for the AD7892AR-2?
The AD7892AR-2 offers both parallel and serial interface options. - Does the AD7892AR-2 have overvoltage protection?
Yes, the AD7892AR-2 has overvoltage protection on its analog inputs, allowing up to ±17 V or ±7 V without damage. - What is the operating temperature range of the AD7892AR-2?
The operating temperature range of the AD7892AR-2 is –40°C to +85°C. - What package type is the AD7892AR-2 available in?
The AD7892AR-2 is available in a 24-lead SOIC package. - Is the AD7892AR-2 suitable for portable applications?
Yes, the AD7892AR-2 is suitable for portable applications due to its low power consumption.
