Overview
The AD585SQ/883B is a high-speed, precision sample-and-hold amplifier produced by Analog Devices Inc. This monolithic circuit integrates a high-performance operational amplifier, 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 particularly suited for 10- and 12-bit data acquisition systems where precision and speed are critical.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Acquisition Time (10 V Step to 0.01%) | 3 | 3 | 3 | µs |
| Acquisition Time (20 V Step to 0.01%) | 5 | 5 | 5 | µs |
| Aperture Time (20 V p-p Input, HOLD 0 V) | 35 | 35 | 35 | ns |
| Aperture Jitter (20 V p-p Input, HOLD 0 V) | 0.5 | 0.5 | 0.5 | ns |
| Droop Rate | 1 | 1 | 1 | mV/ms |
| Supply Voltage Range | -15 V to +15 V | V | ||
| Operating Temperature Range | -55°C | +125°C | °C | |
| Package Type | 14-pin CerDIP |
Key Features
- Fast acquisition time of 3 µs for a 10 V step to 0.01% accuracy and 5 µs for a 20 V step to 0.01% accuracy.
- Low aperture jitter of 0.5 ns, enabling high-frequency signal sampling up to 78 kHz with 12-bit precision.
- Low droop rate of 1 mV/ms, ensuring high accuracy during hold periods.
- Internal holding capacitor and matched application resistors for high precision and flexibility.
- Compatibility with various logic families (TTL, CMOS, ECL) and provision for user-defined feedback networks.
- MIL-STD-883 compliant versions available for military applications.
- Low charge transfer and sample-to-hold offset below 3 mV.
Applications
- Data Acquisition Systems: Ideal for high-speed 10- and 12-bit data acquisition systems.
- Data Distribution Systems: Suitable for systems requiring high throughput rates.
- Analog Delay & Storage: Used in applications needing precise signal storage and delay.
- Peak Amplitude Measurements: Effective in measuring peak signal amplitudes accurately.
- Military and Industrial Systems: Compliant with MIL-STD-883 and suitable for a wide temperature range (-55°C to +125°C).
Q & A
- What is the acquisition time of the AD585SQ/883B for a 10 V step to 0.01% accuracy?
The acquisition time is 3 µs for a 10 V step to 0.01% accuracy.
- What is the aperture jitter of the AD585SQ/883B?
The aperture jitter is 0.5 ns.
- What is the droop rate of the AD585SQ/883B?
The droop rate is 1 mV/ms.
- What are the operating temperature ranges for the AD585SQ/883B?
The operating temperature range is -55°C to +125°C.
- Is the AD585SQ/883B compliant with any military standards?
Yes, it is compliant with MIL-STD-883.
- What types of logic families is the AD585SQ/883B compatible with?
The AD585SQ/883B is compatible with TTL, CMOS, and ECL logic families.
- Can the AD585SQ/883B be used with external hold capacitors?
Yes, an external hold capacitor can be added to reduce the droop rate when long hold times and high accuracy are required.
- What is the supply voltage range for the AD585SQ/883B?
The supply voltage range is -15 V to +15 V.
- What package types are available for the AD585SQ/883B?
The AD585SQ/883B is available in a 14-pin CerDIP package.
- What are some typical applications of the AD585SQ/883B?
Typical applications include data acquisition systems, data distribution systems, analog delay and storage, and peak amplitude measurements.
