Overview
The AD585AQ is a high-speed, precision sample-and-hold amplifier manufactured by Analog Devices Inc. This monolithic integrated circuit combines a high-performance operational amplifier with an ultralow leakage analog switch and a FET input integrating amplifier. It is designed for high-speed data acquisition systems, offering fast acquisition times, low sample-to-hold offset, and minimal droop. The device is suitable for applications requiring precise signal sampling and holding, particularly in environments where high accuracy and speed are critical.
Key Specifications
| Parameter | Value |
|---|---|
| Acquisition Time | 3 μs maximum |
| Aperture Jitter | 0.5 ns |
| Sample-to-Hold Offset | 3 mV maximum |
| Droop Rate | 1.0 mV/ms |
| Input Capacitance | 10 pF at f = 1 MHz |
| Input Resistance | 10^12 Ω |
| Operating Voltage Range | +5 V to -10.8 V, ±18 V |
| Supply Current | 6 mA to 10 mA |
| Operating Temperature Range | -55°C to +125°C |
| Package Options | 14-pin cerdip, 20-pin LCC |
Key Features
- Fast acquisition time of 3 μs and low aperture jitter of 0.5 ns, enabling high-speed data acquisition.
- Low sample-to-hold offset of 3 mV and a droop rate of 1.0 mV/ms.
- Internal pretrimmed application resistors and an internal holding capacitor for ease of use.
- Ability to add an external hold capacitor to reduce the droop rate for long hold times and high accuracy.
- High input resistance and low input capacitance.
- Wide operating temperature range and compliance with MIL-STD-883.
Applications
- High-speed data acquisition systems, particularly those requiring 10- and 12-bit successive-approximation A/D converters.
- Medical devices and aerospace applications where high precision and reliability are crucial.
- Precision instrumentation and measurement systems.
- Industrial and scientific instruments, telecommunications equipment, and automotive systems.
Q & A
- What is the primary function of the AD585AQ? The AD585AQ is a high-speed, precision sample-and-hold amplifier designed for high-speed data acquisition systems.
- What is the acquisition time of the AD585AQ? The acquisition time is 3 μs maximum.
- What is the aperture jitter of the AD585AQ? The aperture jitter is 0.5 ns.
- What is the sample-to-hold offset of the AD585AQ? The sample-to-hold offset is 3 mV maximum.
- What is the droop rate of the AD585AQ? The droop rate is 1.0 mV/ms.
- What are the package options for the AD585AQ? The AD585AQ is available in 14-pin cerdip and 20-pin LCC packages.
- What is the operating temperature range of the AD585AQ? The operating temperature range is -55°C to +125°C.
- Can the AD585AQ be used with external hold capacitors? Yes, an external hold capacitor can be added to reduce the droop rate for long hold times and high accuracy.
- What types of applications is the AD585AQ suitable for? It is suitable for high-speed data acquisition systems, medical devices, aerospace applications, precision instrumentation, and industrial and scientific instruments.
- Is the AD585AQ compliant with any military standards? Yes, it is compliant with MIL-STD-883.
