Overview
The AD7895AN-3 is a high-performance, 12-bit analog-to-digital converter (ADC) produced by Analog Devices Inc. This component operates from a single 5 V supply and is housed in a compact 8-pin mini-DIP or SOIC package. It features a successive approximation ADC with a conversion time of 3.8 µs, making it suitable for high-speed applications. The AD7895AN-3 includes an on-chip track/hold amplifier, an internal clock, and a high-speed serial interface, facilitating easy integration into various systems.
Key Specifications
| Parameter | Value | Notes |
|---|---|---|
| Number of Bits | 12 | |
| Conversion Time | 3.8 µs | |
| Supply Voltage | 5 V | Single supply operation |
| Power Consumption | 20 mW max | |
| Input Ranges | ±10 V, ±2.5 V, 0 V to +2.5 V | Dependent on model variant (AD7895-10, AD7895-3, AD7895-2) |
| Input Resistance | Typically 33 kΩ (±10 V), 12 kΩ (±2.5 V) | |
| Sampling Rate | 192 ksamples/s | |
| Package Type | 8-pin mini-DIP, 8-pin SOIC | |
| Operating Temperature Range | –40°C to +125°C |
Key Features
- High-Speed Conversion: The AD7895AN-3 features a fast conversion time of 3.8 µs, making it suitable for high-speed data acquisition applications.
- Low Power Consumption: The ADC operates with a low power consumption of 20 mW maximum, which is beneficial for battery-powered devices and low power applications.
- Automatic Power-Down Mode: The component includes a proprietary automatic power-down mode that reduces power consumption between conversions.
- High-Speed Serial Interface: The ADC provides a high-speed serial interface for easy data transfer, with a serial clock input and a serial data output.
- On-Chip Track/Hold Amplifier: The integrated track/hold amplifier ensures accurate sampling of the analog input signal.
- Multiple Input Ranges: The AD7895AN-3 is available in different input range variants (±10 V, ±2.5 V, 0 V to +2.5 V), offering flexibility in various application scenarios.
Applications
- Data Acquisition Systems: The high-speed and low power characteristics of the AD7895AN-3 make it ideal for data acquisition systems in industrial, medical, and scientific instruments.
- Embedded Systems: Its compact package and low power consumption are well-suited for embedded systems where space and power are limited.
- Automotive Systems: The component's robust operating temperature range and high accuracy make it suitable for automotive applications.
- Medical Devices: The AD7895AN-3 can be used in medical devices that require high precision and reliability, such as patient monitoring systems.
Q & A
- What is the conversion time of the AD7895AN-3?
The conversion time of the AD7895AN-3 is 3.8 µs.
- What are the available input voltage ranges for the AD7895AN-3?
The AD7895AN-3 is available in three input voltage ranges: ±10 V, ±2.5 V, and 0 V to +2.5 V.
- What is the power consumption of the AD7895AN-3?
The power consumption of the AD7895AN-3 is 20 mW maximum.
- Does the AD7895AN-3 have an automatic power-down mode?
- What types of packages are available for the AD7895AN-3?
The AD7895AN-3 is available in 8-pin mini-DIP and 8-pin SOIC packages.
- What is the operating temperature range of the AD7895AN-3?
The operating temperature range of the AD7895AN-3 is –40°C to +125°C.
- Does the AD7895AN-3 have an on-chip track/hold amplifier?
- What is the sampling rate of the AD7895AN-3?
The sampling rate of the AD7895AN-3 is 192 ksamples/s.
- Is the AD7895AN-3 suitable for high-speed data acquisition applications?
- What type of interface does the AD7895AN-3 use for data transfer?
The AD7895AN-3 uses a high-speed serial interface for data transfer.
