Overview
The AD8561AN is a high-performance, ultrafast single-supply comparator designed by Analog Devices Inc. This comparator is distinguished by its fast 7 ns propagation delay, making it an excellent choice for applications requiring quick response times, such as timing circuits, line receivers, and clock recovery systems. The AD8561AN operates on a single supply voltage ranging from 3 V to 10 V, and it can also be used with ±1.5 V to ±5 V dual supplies. It features separate input and output sections, allowing for flexibility in supply configurations. The device is available in various packages, including 8-lead plastic DIP, 8-lead TSSOP, and 8-lead narrow SOIC surface-mount packages.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|---|
| Propagation Delay | t_P | V_S = 5 V | - | 7 ns | 9.8 ns | ns |
| Offset Voltage | V_OS | -40°C ≤ TA ≤ +85°C | 2.3 mV | - | 7 mV | mV |
| Input Bias Current | I_B | V_CM = 0 V, V_S = 5 V | -6 μA | -3 μA | -3.5 μA | μA |
| Input Common-Mode Voltage Range | V_CM | - | 0 V | - | +3.0 V | V |
| Common-Mode Rejection Ratio | CMRR | 0 V ≤ V_CM ≤ +3.0 V | 65 dB | - | 85 dB | dB |
| Power Supply Rejection Ratio | PSRR | - | 65 dB | - | - | dB |
| Quiescent Current | I_Q | V_S = 5 V | - | 3.3 mA, 5.5 mA, 6 mA | - | mA |
| Operating Temperature Range | T_A | - | -40°C | - | +85°C | °C |
Key Features
- Fast Propagation Delay: The AD8561AN has a propagation delay of 7 ns, making it suitable for high-speed applications such as timing circuits and line receivers.
- Single Supply Operation: Operates on a single supply voltage from 3 V to 10 V, and also compatible with ±1.5 V to ±5 V dual supplies.
- Low Power Consumption: Features low quiescent current, enhancing power efficiency in various applications.
- High CMRR and PSRR: Offers high common-mode rejection ratio (CMRR) and power supply rejection ratio (PSRR), ensuring stability and noise immunity.
- Latch Function: Includes a latch input to retain data at the output, with setup and hold times of 2 ns and 3 ns, respectively.
- Output Compatibility: Output is compatible with CMOS, TTL logic levels, facilitating easy integration into various digital systems.
- Robust Operating Temperature Range: Specified over the industrial temperature range of –40°C to +85°C, ensuring reliability in harsh environments.
Applications
- High Speed Timing Circuits: Ideal for applications requiring fast response times.
- Clock Recovery and Clock Distribution: Suitable for clock recovery systems due to its matched propagation delays.
- Line Receivers: Used in line receiver applications where fast signal detection is crucial.
- Digital Communications: Applied in digital communication systems for signal comparison and detection.
- Phase Detectors: Utilized in phase detection circuits due to its high speed and accuracy.
- High Speed Sampling and Read Channel Detection: Employed in high-speed sampling and read channel detection systems.
- Industrial Electronics and Automation Systems: Used in industrial electronics and automation systems for reliable and fast signal processing.
- Data Acquisition Systems: Suitable for data acquisition systems requiring high-speed and accurate signal comparison.
Q & A
- What is the propagation delay of the AD8561AN?
The propagation delay of the AD8561AN is typically 7 ns, with a maximum of 9.8 ns at 5 V supply voltage.
- What is the operating supply voltage range for the AD8561AN?
The AD8561AN operates on a single supply voltage from 3 V to 10 V and can also be used with ±1.5 V to ±5 V dual supplies.
- What are the key advantages of the AD8561AN?
The key advantages include fast propagation delay, high CMRR and PSRR, low power consumption, and a robust operating temperature range.
- What types of packages are available for the AD8561AN?
The AD8561AN is available in 8-lead plastic DIP, 8-lead TSSOP, and 8-lead narrow SOIC surface-mount packages.
- What is the input common-mode voltage range for the AD8561AN?
The input common-mode voltage range is from 0 V to +3.0 V.
- Is the AD8561AN compatible with CMOS and TTL logic levels?
Yes, the output of the AD8561AN is compatible with CMOS and TTL logic levels.
- What is the operating temperature range for the AD8561AN?
The AD8561AN is specified over the industrial temperature range of –40°C to +85°C.
- Does the AD8561AN have a latch function?
Yes, the AD8561AN includes a latch input to retain data at the output.
- What are some typical applications of the AD8561AN?
Typical applications include high-speed timing circuits, clock recovery, line receivers, digital communications, phase detectors, and data acquisition systems.
- Is the AD8561AN still in production?
The AD8561AN is listed as obsolete, and replacements or upgrades may need to be sourced from similar products.
