Overview
The AD8564AR-REEL, produced by Analog Devices Inc., is a quad 7 ns single-supply comparator. This component is designed for high-speed applications, offering fast propagation delays and low power consumption. It features separate input and output supplies, allowing the input stage to operate from ±5 V dual supplies or a 5 V single supply, while maintaining CMOS-/TTL-compatible outputs. The AD8564 is pin compatible with the MAX901 and has lower supply currents, making it an efficient choice for various high-speed circuits.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Propagation Delay (tP) | 200 mV step with 100 mV overdrive | 6.75 | 9.8 | 13 | ns |
| Differential Propagation Delay (ΔtP) | 100 mV step with 20 mV overdrive | 0.5 | 2.0 | ns | |
| Rise Time (20% to 80%) | 3.8 | ns | |||
| Fall Time (20% to 80%) | 1.5 | ns | |||
| Input Offset Voltage (VOS) | 2.3 | 7 | mV | ||
| Common Mode Rejection Ratio (CMRR) | 0 V ≤ VCM ≤ 3.0 V | 65 | 85 | dB | |
| Power Supply Rejection Ratio (PSRR) | 4.5 V ≤ V+ANA and V+DIG ≤ 5.5 V | 80 | dB | ||
| Analog Supply Current (I+ANA) | −40°C ≤ TA ≤ +125°C | 10.5 | 14.0 | 17 | mA |
| Digital Supply Current (IDIG) | VO = 0 V, RL = ∞ | 6.0 | 7.0 | 8.0 | mA |
Key Features
- 5 V single-supply operation or ±5 V dual supplies
- Fast 7 ns propagation delay
- Low power consumption
- Separate input and output supplies
- TTL/CMOS logic-compatible outputs
- Wide output swing
- Available in TSSOP, SOIC, and PDIP packages
- Independent analog and digital supplies for reduced supply pin interaction
- Pin compatible with MAX901 with lower supply currents
Applications
- High-speed timing circuits
- Line receivers
- Data communications
- High-speed V-to-F converters
Q & A
- What is the propagation delay of the AD8564?
The propagation delay of the AD8564 is typically 9.8 ns for a 200 mV step with 100 mV overdrive, with a range of 6.75 ns to 13 ns over the industrial temperature range.
- What are the power supply options for the AD8564?
The AD8564 can operate from a 5 V single supply or ±5 V dual supplies, with separate input and output supplies.
- What is the common mode rejection ratio (CMRR) of the AD8564?
The CMRR of the AD8564 is 85 dB for common mode voltages between 0 V and 3.0 V.
- What are the typical applications of the AD8564?
The AD8564 is commonly used in high-speed timing circuits, line receivers, data communications, and high-speed V-to-F converters.
- What are the package options available for the AD8564?
The AD8564 is available in 16-lead TSSOP, 16-lead narrow body SOIC, and 16-lead plastic DIP packages.
- How does the AD8564 handle supply pin interaction?
The AD8564 has independent analog and digital supplies, which provide excellent protection from supply pin interaction.
- What is the input offset voltage of the AD8564?
The input offset voltage (VOS) of the AD8564 is typically 7 mV, with a range of 2.3 mV to 7 mV.
- Is the AD8564 pin compatible with other comparators?
Yes, the AD8564 is pin compatible with the MAX901 and has lower supply currents.
- What is the power supply rejection ratio (PSRR) of the AD8564?
The PSRR of the AD8564 is 80 dB for supply voltages between 4.5 V and 5.5 V.
- What is the operating temperature range of the AD8564?
The AD8564 is specified to operate over the industrial temperature range of −40°C to +125°C.
