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Product Detailed Parameters
- Description：IC COMPARATOR 2 W/LATCH 20PLCC
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Type：with Latch
- Number of Elements：2
- Output Type：Complementary, ECL, Open-Emitter
- Voltage - Supply, Single/Dual (±)：-
- Voltage - Input Offset (Max)：2mV @ -5.2V, 5V
- Current - Input Bias (Max)：10µA @ -5.2V,5V
- Current - Output (Typ)：30mA
- Current - Quiescent (Max)：18mA,36mA
- CMRR, PSRR (Typ)：90dB CMRR, 70dB PSRR
- Propagation Delay (Max)：3.5ns
- Hysteresis：-
- Operating Temperature：-25°C ~ 85°C
- Package / Case：20-LCC (J-Lead)
- Mounting Type：Surface Mount
- Supplier Device Package：20-PLCC (9x9)
- Grade：-
- Qualification：-
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Overview
The AD96687BPZ is a dual ultrafast voltage comparator from Analog Devices, housed in a 20-lead PLCC package. It operates with +5.0 V and -5.2 V supplies, consuming approximately 118 mW per comparator. The device features a propagation delay of 3.5 ns typical and 50 ps dispersion. It includes latch enable inputs for track-hold or sample-hold modes. Outputs are complementary open-emitter signals compatible with ECL logic.
Feature Summary
- Ultrafast dual comparator architecture with low propagation delay dispersion
- Integrated latch enable inputs supporting track-hold and sample-hold operation
- Complementary open-emitter outputs directly drive transmission lines
- High precision differential input stage with wide common-mode range
Applications
- High speed triggers
- Threshold detectors
- Window comparators
- Peak detectors
Procurement Notes
Verify the specific ordering suffix BPZ corresponds to the 20-lead PLCC industrial temperature variant (-25°C to +85°C). Confirm that the supply voltages match the required +5.0 V and -5.2 V specifications. Ensure proper ECL termination resistors are included in the design for the open-emitter outputs.
Selection Notes
Select this component when dual high-speed comparison with latching capability is required. The PLCC package suits applications needing surface mount integration without leaded DIP constraints. Consider the 50 ps dispersion for critical timing accuracy across varying overdrive conditions compared to standard comparators.
Part Context
The AD96687BPZ belongs to the AD96685/AD96687 family of ultrafast comparators. While the AD96685 is a single comparator, the AD96687 provides two channels in various packages including SOIC, DIP, and PLCC. This series is designed for applications requiring consistent propagation delay despite signal variations.
Replacement Considerations
The AD96687BRZ (SOIC) and AD96687BQ (DIP) are functionally equivalent dual comparators within the same family. Verify pin compatibility if substituting between package types.
