Overview
The AD7895AR-2 is a high-performance, 12-bit analog-to-digital converter (ADC) produced by Analog Devices Inc. This component is designed for applications requiring fast and accurate analog-to-digital conversion. It operates from a single +5 V supply and is housed in a compact 8-pin mini-DIP or SOIC package, making it ideal for space-constrained designs. The AD7895AR-2 features a successive approximation ADC with a conversion time of 3.8 µs, an on-chip track/hold amplifier, and a high-speed serial interface.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Bits | 12 |
| Conversion Time | 3.8 µs |
| Input Voltage Range | ±10 V (AD7895-10), ±2.5 V (AD7895-3), 0 V to +2.5 V (AD7895-2) |
| Input Resistance | Typically 33 kΩ (±10 V), 12 kΩ (±2.5 V) |
| Supply Voltage | Single +5 V |
| Power Consumption | 20 mW max |
| Operating Temperature | –40°C to +85°C |
| Package Type | 8-pin mini-DIP, 8-pin SOIC |
| Data Interface | High-speed serial interface |
Key Features
- Fast conversion time of 3.8 µs, making it suitable for high-speed applications.
- On-chip track/hold amplifier and internal clock for simplified system design.
- High-speed serial interface for efficient data transfer.
- Low power consumption of 20 mW max, with an automatic power-down mode for low power applications.
- High input impedance and no dynamic charging currents, ensuring minimal impact on the input signal.
- Compact 8-pin package options (mini-DIP and SOIC) for space-saving designs.
Applications
- Data acquisition systems requiring high-speed and accurate analog-to-digital conversion.
- Industrial control systems where compact and reliable ADCs are necessary.
- Medical devices that demand precise and fast signal conversion.
- Aerospace and defense applications where low power consumption and high reliability are critical.
- Automotive systems needing robust and high-performance ADCs.
Q & A
- What is the conversion time of the AD7895AR-2?
The conversion time of the AD7895AR-2 is 3.8 µs.
- What are the available input voltage ranges for the AD7895AR-2?
The AD7895AR-2 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 AD7895AR-2?
The power consumption of the AD7895AR-2 is 20 mW max.
- What types of packages are available for the AD7895AR-2?
The AD7895AR-2 is available in 8-pin mini-DIP and 8-pin SOIC packages.
- Does the AD7895AR-2 have an on-chip track/hold amplifier?
Yes, the AD7895AR-2 includes an on-chip track/hold amplifier.
- What is the operating temperature range of the AD7895AR-2?
The operating temperature range of the AD7895AR-2 is –40°C to +85°C.
- What type of data interface does the AD7895AR-2 use?
The AD7895AR-2 uses a high-speed serial interface.
- Is the AD7895AR-2 suitable for low power applications?
Yes, the AD7895AR-2 has an automatic power-down mode for low power applications.
- What is the input resistance of the AD7895AR-2 for the ±10 V input range?
The input resistance for the ±10 V input range is typically 33 kΩ.
- Can the AD7895AR-2 be used in industrial control systems?
Yes, the AD7895AR-2 is suitable for industrial control systems due to its high reliability and performance.
