Overview
The AD7890ANZ-10, produced by Analog Devices Inc., is an 8-channel 12-bit serial data acquisition system. This component integrates an input multiplexer, an on-chip track/hold amplifier, a high-speed 12-bit analog-to-digital converter (ADC), a 2.5 V reference, and a high-speed serial interface. It operates from a single 5 V supply and supports an analog input range of ±10 V. The device is designed for versatility and efficiency, making it suitable for various data acquisition applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Channels | 8 | - |
| Resolution | 12-bit | - |
| Analog Input Range | ±10 V | V |
| Conversion Time | 5.9 μs | μs |
| Supply Voltage | 5 V ± 5% | V |
| Power Dissipation (Normal Mode) | 50 mW (typ. 30 mW) | mW |
| Power Dissipation (Standby Mode) | 75 μW | μW |
| Output Coding | Twos Complement | - |
| Serial Interface | High-speed, bidirectional | - |
Key Features
- Fast 12-bit ADC with a conversion time of 5.9 μs.
- Eight single-ended analog input channels.
- Selection of input ranges: ±10 V, 0 V to 4.096 V, and 0 V to 2.5 V.
- On-chip track/hold amplifier and 2.5 V reference.
- High-speed, flexible, serial interface for easy interfacing with microcontrollers and digital signal processors.
- Single supply operation with low power consumption (50 mW maximum, typically 30 mW).
- Power-down mode for reduced power dissipation (75 μW typical).
- Independently accessible multiplexer allowing for external antialiasing filters or signal conditioning.
Applications
The AD7890ANZ-10 is suitable for a variety of data acquisition applications, including:
- Industrial control systems.
- Medical devices requiring multiple channel data acquisition.
- Aerospace and defense systems.
- Automotive systems.
- Test and measurement equipment.
Q & A
- What is the resolution of the AD7890ANZ-10 ADC?
The AD7890ANZ-10 has a 12-bit resolution.
- How many analog input channels does the AD7890ANZ-10 support?
The AD7890ANZ-10 supports 8 single-ended analog input channels.
- What are the available input ranges for the AD7890ANZ-10?
The available input ranges are ±10 V, 0 V to 4.096 V, and 0 V to 2.5 V.
- What is the conversion time of the AD7890ANZ-10?
The conversion time is 5.9 μs.
- How does the AD7890ANZ-10 interface with other devices?
The AD7890ANZ-10 uses a high-speed, bidirectional serial interface for easy interfacing with microcontrollers and digital signal processors.
- What is the power consumption of the AD7890ANZ-10 in normal mode?
The power consumption in normal mode is typically 30 mW, with a maximum of 50 mW.
- Does the AD7890ANZ-10 have a power-down mode?
Yes, the AD7890ANZ-10 has a power-down mode with a typical power dissipation of 75 μW.
- Can external filters or signal conditioning be used with the AD7890ANZ-10?
Yes, the multiplexer is independently accessible, allowing for the insertion of external antialiasing filters or signal conditioning.
- What is the output coding format for the AD7890ANZ-10?
The output coding format is twos complement for the AD7890-10 model.
- What is the supply voltage requirement for the AD7890ANZ-10?
The supply voltage is 5 V ± 5%.
