Overview
The AD7891BSZ-1 is a high-performance, 8-channel, 12-bit data acquisition system produced by Analog Devices Inc. This component integrates multiple functions on a single chip, including an input multiplexer, an on-chip track/hold amplifier, a high-speed 12-bit ADC, a 2.5 V reference, and high-speed parallel and serial interface logic. It operates from a single 5 V supply and is available in a 44-lead MQFP package.
The AD7891BSZ-1 is part of the AD7891 series, which offers flexible analog input ranges and interface options, making it suitable for a wide range of applications requiring high-speed and precise data acquisition.
Key Specifications
| Specification | Value |
|---|---|
| Resolution | 12-bit |
| Number of Channels | 8 single-ended analog input channels |
| Conversion Time | 1.6 μs (AD7891-2), 0.6 μs (AD7891-1 with hardware convert start), 0.7 μs (AD7891-1 with software convert start) |
| Sampling Rate | Up to 500 kSPS (single channel), 62.5 kSPS (channel hopping) |
| Analog Input Ranges | ±5 V, ±10 V (AD7891-1); 0 to +2.5 V, 0 to +5 V, ±2.5 V (AD7891-2) |
| Interface | Parallel and serial interfaces |
| Supply Voltage | 5 V ± 5% |
| Power Dissipation | 100 mW max (normal mode), 75 μW typ (standby mode) |
| Operating Temperature | -40°C to 85°C |
| Package | 44-lead MQFP |
Key Features
- High-speed 12-bit ADC with fast conversion times
- 8 single-ended analog input channels with overvoltage protection on each channel
- On-chip track/hold amplifier and 2.5 V reference
- Flexible serial and parallel data interfaces
- Single 5 V supply operation with low power consumption
- Power-down mode for reduced power dissipation
- Compact 44-lead MQFP package for space-efficient designs
- Operational in a wide temperature range from -40°C to 85°C, suitable for industrial applications
Applications
- Data acquisition systems
- Motor control systems
- Mobile communication base stations
- Instrumentation and measurement systems
- Industrial automation and process control systems
- Robotics and data logging equipment
- Medical instrumentation
Q & A
- What is the resolution of the AD7891BSZ-1?
The AD7891BSZ-1 has a 12-bit resolution.
- How many analog input channels does the AD7891BSZ-1 have?
The AD7891BSZ-1 has 8 single-ended analog input channels.
- What are the available analog input ranges for the AD7891BSZ-1?
The AD7891BSZ-1 (part of the AD7891-1 model) supports input ranges of ±5 V and ±10 V.
- What are the interface options for the AD7891BSZ-1?
The AD7891BSZ-1 offers both parallel and serial data interfaces.
- What is the typical power consumption of the AD7891BSZ-1 in normal mode?
The typical power consumption in normal mode is 82 mW.
- What is the operating temperature range of the AD7891BSZ-1?
The operating temperature range is from -40°C to 85°C.
- What type of package is the AD7891BSZ-1 available in?
The AD7891BSZ-1 is available in a 44-lead MQFP package.
- Does the AD7891BSZ-1 have overvoltage protection?
Yes, each channel on the AD7891BSZ-1 has overvoltage protection.
- What is the maximum sampling rate of the AD7891BSZ-1?
The maximum sampling rate is up to 500 kSPS for single-channel sampling and 62.5 kSPS for channel hopping.
- Is the AD7891BSZ-1 suitable for industrial applications?
Yes, it is suitable for industrial applications due to its robust operating temperature range and high integration.
