Overview
The AD585JPZ is a high-speed, precision sample-and-hold amplifier produced by Analog Devices Inc. This component is part of the AD585 family, which is designed for high-performance data acquisition systems. The AD585JPZ features a monolithic sample-and-hold circuit that includes a high-performance operational amplifier, an ultralow leakage analog switch, and a FET input integrating amplifier. It is optimized for fast acquisition times, low sample-to-hold offset, and minimal droop, making it ideal for 10- and 12-bit data acquisition systems.
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 |
| Settling Time (20 V p-p Input, HOLD 0 V, to 0.01%) | 0.5 | 0.5 | 0.5 | µs |
| Droop Rate | 1 | 1 | 1 | mV/ms |
| Sample-to-Hold Offset | 3 | mV | ||
| Operating Temperature Range | 0°C | +70°C | ||
| Package Type | 20-pin PLCC |
Key Features
- Fast Acquisition Time: The AD585JPZ can acquire a signal to ±0.01% in 3 µs maximum, making it suitable for high-speed data acquisition systems.
- Low Aperture Jitter: The device exhibits an aperture jitter of 0.5 ns, enabling precise sampling of high-frequency signals.
- Low Droop Rate: The droop rate is only 1.0 mV/ms, which is beneficial for both high-speed and high-accuracy applications.
- Internal Hold Capacitor and Application Resistors: The component includes an internal holding capacitor and matched application resistors for high precision and flexibility.
- MIL-STD-883 Compliant Versions: Available in versions that comply with MIL-STD-883, suitable for military and high-reliability applications.
- Compatibility with A/D Converters: Recommended for use with 10- and 12-bit successive-approximation A/D converters such as AD573, AD574A, AD674A, AD7572, and AD7672.
Applications
- Data Acquisition Systems: Ideal for high-speed 10- and 12-bit data acquisition systems where fast acquisition time, low sample-to-hold offset, and low droop are critical.
- Data Distribution Systems: Suitable for systems requiring precise signal distribution and storage.
- Analog Delay & Storage: Can be used for analog delay and storage applications due to its low droop rate and high precision.
- Peak Amplitude Measurements: Useful in applications requiring the measurement of peak signal amplitudes with high accuracy.
- Military and High-Reliability Applications: Versions compliant with MIL-STD-883 make it suitable for military and other high-reliability applications.
Q & A
- What is the acquisition time of the AD585JPZ?
The AD585JPZ can acquire a signal to ±0.01% in 3 µs maximum for a 10 V step and 5 µs maximum for a 20 V step.
- What is the aperture jitter of the AD585JPZ?
The aperture jitter is 0.5 ns, which allows for precise sampling of high-frequency signals.
- What is the droop rate of the AD585JPZ?
The droop rate is 1.0 mV/ms, which is beneficial for maintaining signal accuracy over time.
- Does the AD585JPZ have an internal hold capacitor?
Yes, the AD585JPZ includes an internal holding capacitor, and additional external capacitance can be added to reduce the droop rate if necessary.
- What types of A/D converters is the AD585JPZ compatible with?
The AD585JPZ is recommended for use with 10- and 12-bit successive-approximation A/D converters such as AD573, AD574A, AD674A, AD7572, and AD7672.
- Is the AD585JPZ available in MIL-STD-883 compliant versions?
Yes, versions of the AD585 are available that comply with MIL-STD-883, making them suitable for military and high-reliability applications.
- What is the operating temperature range of the AD585JPZ?
The AD585JPZ is specified for the 0°C to +70°C commercial temperature range.
- What package type is the AD585JPZ available in?
The AD585JPZ is available in a 20-pin PLCC package.
- Has the AD585JPZ been discontinued?
Yes, the AD585JPZ has been discontinued by Analog Devices Inc. as of the last time buy date in 2022.
- What are the replacement options for the AD585JPZ?
Replacement options are available from the same generic family but with different packages and not pin-to-pin compatible, such as the AD585AQ.
