Overview
The AD8561AR-REEL, produced by Analog Devices Inc., is an ultrafast single-supply comparator with a propagation delay of just 7 ns. This component features separate input and output sections, allowing the input stage to be operated from either ±5 V dual supplies or +5 V single supplies. This flexibility, combined with its low power consumption and fast response time, makes the AD8561 an excellent choice for high-speed applications such as timing circuits, line receivers, and clock recovery.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|---|
| Propagation Delay | t_P | V+ = 5 V | - | 7 ns | 9.8 ns | ns |
| Input Offset Voltage | V_OS | V_CM = 0 V | - | - | 7 mV | mV |
| Input Bias Current | I_B | V_CM = 0 V | -6 μA | -3.0 μA | -4 μA | μA |
| Common-Mode Input Voltage Range | V_CM | - | 0 V | - | +1.5 V | V |
| Common-Mode Rejection Ratio | CMRR | 0.1 V ≤ V_CM ≤ 1.5 V | - | - | 60 dB | dB |
| Power Supply Rejection Ratio | PSRR | +2.7 V ≤ V_CC, V_EE ≤ +6 V | - | - | 40 dB | dB |
| Supply Currents | I+ | V_O = 0 V, R_L = ∞ | 4.0 mA | 4.5 mA | 5.5 mA | mA |
| Ground Supply Current | I_GND | V_O = 0 V, R_L = ∞ | 1.6 mA | 2.5 mA | 3.0 mA | mA |
| Operating Temperature | T_A | - | -40°C | - | +85°C | °C |
| Package Type | - | - | - | - | 8-lead TSSOP, 8-lead narrow SOIC, 8-lead plastic DIP | - |
Key Features
- Ultrafast 7 ns propagation delay, making it suitable for high-speed timing circuits and line receivers.
- Single supply operation from 3 V to 10 V, with the ability to use ±5 V dual supplies.
- Low power consumption with supply currents as low as 4.0 mA.
- Wide common-mode input range that includes the negative supply rail.
- Closely matched propagation delays for rising and falling signals, ensuring consistent duty cycle in clock recovery applications.
- Available in 8-lead plastic DIP, 8-lead TSSOP, and 8-lead narrow SOIC surface-mount packages.
- Industrial temperature range operation from –40°C to +85°C.
Applications
- High-speed timing circuits.
- Clock recovery and clock distribution.
- Line receivers.
- Digital communications.
- Phase detectors.
- High-speed sampling and read channel detection.
- PCMCIA cards.
- Upgrade for LT1016 designs.
Q & A
- What is the propagation delay of the AD8561?
The AD8561 has a propagation delay of 7 ns.
- What are the supply voltage ranges for the AD8561?
The AD8561 can operate from a single supply of 3 V to 10 V or from ±5 V dual supplies.
- What is the common-mode input voltage range of the AD8561?
The common-mode input voltage range is from 0 V to +1.5 V.
- What are the typical supply currents for the AD8561?
The typical supply currents are 4.5 mA for the positive supply and 2.5 mA for the ground supply.
- In what temperature range does the AD8561 operate?
The AD8561 operates over the industrial temperature range of –40°C to +85°C.
- What are the available package types for the AD8561?
The AD8561 is available in 8-lead plastic DIP, 8-lead TSSOP, and 8-lead narrow SOIC surface-mount packages.
- What are some common applications of the AD8561?
Common applications include high-speed timing circuits, clock recovery, line receivers, digital communications, phase detectors, and high-speed sampling.
- How does the AD8561 compare to the LT1016?
The AD8561 has the same pinout as the LT1016 but with lower supply current and a wider common-mode input range.
- What is the output type of the AD8561?
The output type is CMOS, complementary, and TTL.
- Does the AD8561 have a latch function?
Yes, the AD8561 includes a low power latch function.
