Overview
The AD783JQ, produced by Analog Devices Inc., is a high-speed, monolithic sample-and-hold amplifier (SHA). This component is designed to provide high-speed sampling with 12-bit accuracy, making it suitable for applications requiring rapid data acquisition and precise signal holding. The AD783JQ is completely self-contained, including an on-chip hold capacitor, and does not require external components or adjustments to perform its sampling function. It features a proprietary self-correcting architecture that compensates for internal errors such as amplifier gain and offset errors, and charge injection errors, ensuring accurate signal holding in the hold mode.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Acquisition Time (5 V Step to 0.01%) | 250 | 375 | ns | |
| Acquisition Time (5 V Step to 0.1%) | 200 | 350 | ns | |
| Small Signal Bandwidth | 15 | MHz | ||
| Full Power Bandwidth | 2 | MHz | ||
| Effective Aperture Delay (+25°C) | -30 | 15 | 30 | ns |
| Aperture Jitter (+25°C) | 20 | 50 | ps | |
| Hold Settling (to 1 mV, +25°C) | 150 | 200 | ns | |
| Droop Rate | 0.02 | 1 | µV/µs | |
| Feedthrough (+25°C) | -80 | dB | ||
| Operating Voltage Range | ±4.75 | ±5 | ±5.25 | V |
| Supply Current | 9.5 | 17 | mA | |
| Power Consumption | 95 | 175 | mW | |
| Temperature Range | 0 | 70 | °C |
Key Features
- High-Speed Sampling: The AD783JQ offers a typical acquisition time of 250 ns to 0.01% and 200 ns to 0.1% for a 5 V step input, making it suitable for high-speed data acquisition systems.
- Self-Correcting Architecture: The component features a proprietary self-correcting architecture that compensates for internal errors such as amplifier gain and offset errors, and charge injection errors, ensuring accurate signal holding.
- On-Chip Hold Capacitor: The AD783JQ includes an on-chip hold capacitor, eliminating the need for external components or adjustments to perform the sampling function.
- Low Aperture Jitter and Settling Time: The device has a low aperture jitter of 20-50 ps and a hold settling time of 150-200 ns to 1 mV, which is crucial for maintaining signal integrity.
- Wide Operating Voltage Range: The component operates over a voltage range of ±4.75 V to ±5.25 V, providing flexibility in various system designs.
Applications
- High-Speed Data Acquisition Systems: The AD783JQ is ideal for multichannel data acquisition systems where high throughput rates are required.
- Interface with A-to-D Converters: It is compatible with high-speed, high-resolution A-to-D converters like the AD671 and AD7586, making it suitable for applications involving precise analog-to-digital conversion.
- Signal Processing and Analysis: The component can be used in various signal processing applications, such as sampling IF signals in communication systems and analyzing FSK-modulated tones.
- Industrial and Medical Equipment: Its high accuracy and speed make it a viable choice for industrial and medical equipment that require precise signal handling and analysis.
Q & A
- What is the typical acquisition time of the AD783JQ?
The typical acquisition time of the AD783JQ is 250 ns to 0.01% and 200 ns to 0.1% for a 5 V step input.
- Does the AD783JQ require external components for sampling?
No, the AD783JQ includes an on-chip hold capacitor and does not require external components or adjustments to perform the sampling function.
- What is the aperture jitter of the AD783JQ?
The aperture jitter of the AD783JQ is 20-50 ps).
- What is the operating voltage range of the AD783JQ?
The operating voltage range of the AD783JQ is ±4.75 V to ±5.25 V).
- What is the power consumption of the AD783JQ?
The power consumption of the AD783JQ is 95-175 mW).
- What is the temperature range for specified performance of the AD783JQ?
The specified performance temperature range for the AD783JQ is 0°C to 70°C).
- Can the AD783JQ be used with high-speed A-to-D converters?
- What are some common applications of the AD783JQ?
The AD783JQ is commonly used in high-speed data acquisition systems, interface with A-to-D converters, signal processing, and analysis in various industrial and medical equipment).
- How does the self-correcting architecture of the AD783JQ work?
The self-correcting architecture of the AD783JQ compensates for internal errors such as amplifier gain and offset errors, and charge injection errors, ensuring accurate signal holding in the hold mode).
- What is the droop rate of the AD783JQ?
The droop rate of the AD783JQ is 0.02-1 µV/µs).
