Overview
The AD8564ARZ, produced by Analog Devices Inc., is a quad 7 ns single-supply comparator. This device is designed to operate with either a 5 V single supply or ±5 V dual supplies, while maintaining CMOS- and TTL-compatible outputs. It is particularly suited for high-speed timing circuits, line receivers, and data communications due to its fast 7 ns propagation delay and independent analog and digital supplies, which provide excellent protection from supply pin interaction.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Offset Voltage | VOS | V+ANA = V+DIG = 5.0 V, V−ANA = 0 V, TA = 25°C | 2.3 | 7 | 8 | mV |
| Offset Voltage Drift | ΔVOS/ΔT | −40°C ≤ TA ≤ +125°C | 4 | μV/°C | ||
| Input Bias Current | IB | VCM = 0 V, −40°C ≤ TA ≤ +125°C | ±4 | ±9 | μA | |
| Input Common-Mode Voltage Range | VCM | 0 | 2.75 | V | ||
| Analog Supply Current | I−ANA | V+ANA = V+DIG = 5.0 V, V−ANA = 0 V, −40°C ≤ TA ≤ +125°C | −7.0 | 17 | mA | |
| Digital Supply Current | IDIG | VO = 0 V, RL = ∞, −40°C ≤ TA ≤ +125°C | 6.0 | 7.0 | 8.0 | mA |
| Propagation Delay | 7 | 9.8 | ns | |||
| Package Type | 16-lead TSSOP, 16-lead SOIC, 16-lead PDIP |
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 16-lead TSSOP, 16-lead narrow body SOIC, and 16-lead plastic DIP packages
- Pin compatible with the MAX901 with lower supply currents
- Similar propagation delays for all four comparators, tracking over temperature and voltage
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 AD8564 has a propagation delay of 7 ns, with a maximum of 9.8 ns.
- What are the supply voltage options for the AD8564?
The AD8564 can operate with either a 5 V single supply or ±5 V dual supplies.
- What are the package options for the AD8564?
The AD8564 is available in 16-lead TSSOP, 16-lead narrow body SOIC, and 16-lead plastic DIP packages.
- Is the AD8564 compatible with other comparators?
The AD8564 is pin compatible with the MAX901 and has lower supply currents.
- What is the temperature range for the AD8564?
The AD8564 is specified over the industrial temperature range of −40°C to +125°C.
- What are the typical applications of the AD8564?
The AD8564 is typically used in high-speed timing circuits, line receivers, data communications, and high-speed V-to-F converters.
- How does the AD8564 protect against supply pin interaction?
The AD8564 has independent analog and digital supplies, which provide excellent protection from supply pin interaction.
- Can the AD8564 be configured with hysteresis?
Yes, the AD8564 can be configured with hysteresis using external resistors and a capacitor in the feedback network.
- What is the input common-mode voltage range for the AD8564?
The input common-mode voltage range for the AD8564 is from 0 V to 2.75 V.
- What is the typical analog supply current for the AD8564?
The typical analog supply current for the AD8564 is around 14 mA, with a maximum of 17 mA over the specified temperature range.
