Overview
The AD7899AR-2 is a high-performance, 14-bit analog-to-digital converter (ADC) manufactured by Analog Devices Inc. This component is designed for high-speed, low-power data acquisition applications. It features a successive approximation register (SAR) architecture, which enables fast and accurate conversions. The AD7899AR-2 operates from a single 5V supply, making it suitable for a wide range of applications, including medical imaging systems, data acquisition systems, and other real-time data processing environments.
Key Specifications
| Parameter | Value | Unit | Comments |
|---|---|---|---|
| Manufacturer | Analog Devices Inc. | ||
| Part Number | AD7899AR-2 | ||
| Number of Bits | 14 | ||
| Sampling Rate | 400 kSPS | ||
| Number of Inputs | 1 | Single-ended input | |
| Input Voltage Range | 0 V to 2.5 V, 0 V to 5 V, ±2.5 V | V | Depends on the version (AD7899-1, AD7899-2, AD7899-3) |
| Supply Voltage | 5 V | V | Single supply voltage |
| Power Consumption | 80 mW (typical), 20 µW (power-down mode) | mW/µW | |
| Package | 28-SOIC (0.295", 7.50mm Width) | ||
| Operating Temperature | -40°C to 85°C | °C | |
| Architecture | SAR (Successive Approximation Register) | ||
| Reference Type | External, Internal | ||
| Data Interface | Parallel | Compatible with 3 V and 5 V processors | |
| Moisture Sensitivity Level (MSL) | 3 (168 Hours) | ||
| Lead Free Status / RoHS Status | Lead free / RoHS Compliant |
Key Features
- High-Speed Conversion: The AD7899AR-2 features a fast conversion time of 2.2 µs, allowing for throughput rates of up to 400 kSPS.
- Low Power Consumption: It operates at a low power consumption of 80 mW (typical) and has a power-down mode that reduces power to 20 µW.
- Single Supply Operation: The ADC operates from a single 5V supply, making it ideal for low-power and portable applications.
- High-Speed Parallel Interface: The interface is compatible with both 3 V and 5 V processors, facilitating easy connection to various microprocessors and digital signal processors.
- Sample-and-Hold Feature: The ADC includes a sample-and-hold circuit, ensuring accurate conversion of the analog input signal.
- Overvoltage Protection: The component has overvoltage protection on the analog inputs, enhancing reliability and durability.
- Low Noise Performance: The AD7899AR-2 is designed to provide low noise performance, which is crucial for high-accuracy data acquisition systems.
- RoHS Compliant and Lead Free: The component is lead-free and RoHS compliant, making it suitable for use in environmentally friendly and sustainable applications.
Applications
- Medical Imaging Systems: The high-speed and low-power characteristics of the AD7899AR-2 make it an ideal choice for medical imaging systems where real-time data acquisition is critical.
- Data Acquisition Systems: It is widely used in various data acquisition systems that require fast and accurate conversion of analog signals to digital data.
- Industrial Automation: The component is suitable for industrial automation applications where high-speed data processing is necessary.
- Portable and Battery-Powered Devices: The low power consumption of the AD7899AR-2 makes it a good fit for portable and battery-powered devices that require efficient data conversion.
Q & A
- What is the resolution of the AD7899AR-2 ADC?
The AD7899AR-2 has a 14-bit resolution.
- What is the sampling rate of the AD7899AR-2?
The sampling rate of the AD7899AR-2 is up to 400 kSPS.
- What is the supply voltage for the AD7899AR-2?
The AD7899AR-2 operates from a single 5V supply.
- What type of data interface does the AD7899AR-2 use?
The AD7899AR-2 uses a high-speed parallel interface compatible with both 3 V and 5 V processors.
- Does the AD7899AR-2 have overvoltage protection?
Yes, the AD7899AR-2 has overvoltage protection on the analog inputs.
- What is the operating temperature range of the AD7899AR-2?
The operating temperature range is -40°C to 85°C.
- Is the AD7899AR-2 RoHS compliant and lead-free?
Yes, the AD7899AR-2 is RoHS compliant and lead-free.
- What is the typical power consumption of the AD7899AR-2?
The typical power consumption is 80 mW, with a power-down mode of 20 µW.
- What is the conversion time of the AD7899AR-2?
The conversion time is 2.2 µs.
- What type of architecture does the AD7899AR-2 use?
The AD7899AR-2 uses a successive approximation register (SAR) architecture.
