Overview
The AD7884BP is a high-speed, 16-bit sampling analog-to-digital converter (ADC) produced by Analog Devices Inc. This device is part of the AD7884/AD7885 series, known for its high throughput rate and robust design. The AD7884BP uses a two-pass flash architecture, enabling it to achieve a maximum throughput rate of 166 kSPS. It is designed to operate with two input ranges: ±5 V and ±3 V, and it includes an internal oscillator for controlling the conversion process. The device is suitable for various applications requiring high-speed and accurate analog-to-digital conversion.
Key Specifications
| Specification | Value |
|---|---|
| Resolution | 16 bits |
| Throughput Rate | 166 kSPS |
| Input Ranges | ±5 V, ±3 V |
| Conversion Time | 5.3 µs (first phase: 3.35 µs) |
| Supply Voltage | ±5 V |
| Reference Voltage | 3 V (VREF+) |
| Output Format | 16-bit parallel (AD7884), byte serial (AD7885) |
| Temperature Range | -40°C to +85°C (J, A, B Versions) |
| Package Options | 40-lead CERDIP, 44-lead PLCC |
Key Features
- High-Speed Conversion: Achieves a throughput rate of 166 kSPS using a two-pass flash architecture.
- Dual Input Ranges: Supports input ranges of ±5 V and ±3 V.
- Internal Oscillator: Includes an internal oscillator for controlling the conversion process.
- Sample-and-Hold Amplifier: Features a sample-and-hold amplifier for accurate signal capture.
- Standalone Operation: Can operate standalone with an external CONVST pulse.
- Low Noise Performance: Requires isolation from active processor buses to maintain low noise performance.
Applications
The AD7884BP is suitable for a variety of high-speed data acquisition applications, including:
- Medical imaging and diagnostics
- Industrial process control and monitoring
- Aerospace and defense systems
- High-speed data logging and analysis
- Automotive and automotive safety systems
Q & A
- What is the resolution of the AD7884BP?
The AD7884BP has a resolution of 16 bits. - What is the maximum throughput rate of the AD7884BP?
The maximum throughput rate is 166 kSPS. - What are the available input ranges for the AD7884BP?
The device supports input ranges of ±5 V and ±3 V. - How long does the conversion process take for the AD7884BP?
The conversion time is approximately 5.3 µs, with the first phase taking 3.35 µs. - What is the supply voltage requirement for the AD7884BP?
The device operates from ±5 V supplies. - What is the reference voltage required for the AD7884BP?
The reference voltage (VREF+) is 3 V. - How does the AD7884BP output data?
The AD7884 outputs data in a 16-bit parallel format, while the AD7885 outputs in a byte serial format. - What are the temperature ranges for the AD7884BP?
The temperature range is -40°C to +85°C for J, A, and B versions. - What package options are available for the AD7884BP?
The device is available in 40-lead CERDIP and 44-lead PLCC packages. - Can the AD7884BP operate standalone?
Yes, the AD7884BP can operate standalone with an external CONVST pulse.
