Overview
The AD8611ARM-REEL, produced by Analog Devices Inc., is a high-performance, single-supply comparator with a latch function and complementary output. This device is part of the AD8611 series, known for its ultrafast 4 ns propagation delay, making it ideal for timing circuits, line receivers, and clock recovery applications. The AD8611 offers significant improvements over its predecessors, such as the LT1016 and LT1394, with lower supply current, a wider common-mode input range, and enhanced output voltage swing.
Key Specifications
| Parameter | Rating/Value |
|---|---|
| Total Analog Supply Voltage | 7.0 V |
| Input Voltage Range | VCC +0.3 V to VEE −0.3 V |
| Differential Input Voltage | ±5 V |
| Propagation Delay | Typically 4 ns |
| Input Bias Current | Maximum 7 μA over temperature (−40°C to +85°C) |
| Output Current | Up to 10 mA |
| Operating Temperature Range | −40°C to +85°C |
| Package Types | 8-lead MSOP, 8-lead narrow SOIC |
Key Features
- Ultrafast 4 ns propagation delay, making it suitable for high-speed applications.
- Low supply current of 5 mA, significantly lower than the LT1016.
- Wider common-mode input range that includes the negative supply rail.
- Complementary output and latch function.
- Matched propagation delays for rising and falling signals, ensuring consistent duty cycle matching.
- Ability to deliver up to 10 mA of output current without increasing propagation delay.
- Operates over the industrial temperature range (−40°C to +85°C).
Applications
- Timing circuits and line receivers due to its fast propagation delay.
- Clock recovery applications where duty cycle matching is crucial.
- High-speed analog-to-digital converter (ADC) upgrades for designs such as LT1394 and LT1016.
- General-purpose high-speed comparator applications requiring low power consumption and high accuracy.
Q & A
- What is the propagation delay of the AD8611?
The AD8611 has a typical propagation delay of 4 ns.
- What are the package options for the AD8611?
The AD8611 is available in 8-lead MSOP and 8-lead narrow SOIC surface-mount packages.
- What is the operating temperature range of the AD8611?
The AD8611 operates over the industrial temperature range of −40°C to +85°C.
- How much output current can the AD8611 deliver?
The AD8611 can deliver up to 10 mA of output current without increasing its propagation delay.
- What is the maximum input frequency for the AD8611?
The AD8611 can accurately compare input signals up to 100 MHz with less than 10 mV of overdrive.
- How does the AD8611 compare to the LT1016 in terms of supply current?
The AD8611 uses significantly less current than the LT1016, with a typical supply current of 5 mA compared to 25 mA for the LT1016.
- What is the input bias current of the AD8611?
The input bias current of the AD8611 is a maximum of 7 μA over the temperature range (−40°C to +85°C).
- Can the AD8611 be used for clock recovery applications?
Yes, the AD8611 is suitable for clock recovery due to its matched propagation delays for rising and falling signals, ensuring the duty cycle of the output matches the duty cycle of the input.
- How does the AD8611 handle output loading?
The outputs of the AD8611 must not be connected to more than 40 TTL input logic gates or drive similar loads to maintain performance.
- What are the key differences between the AD8611 and the LT1016?
The key differences include input voltage range, input bias currents, propagation delay, output voltage swing, and power consumption.
