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Product Detailed Parameters
- Description：IC COMPARATOR 2 W/LATCH 16SOIC
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR)
- 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：16-SOIC (0.154", 3.90mm Width)
- Mounting Type：Surface Mount
- Supplier Device Package：16-SOIC
- Grade：-
- Qualification：-
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Overview
The AD96687BR-REEL is a dual ultrafast voltage comparator from Analog Devices, packaged in a 16-pin SOIC. It operates on +5 V and -5.2 V supplies with an industrial temperature range of -25°C to +85°C. Key electrical parameters include a typical propagation delay of 2.5 ns (max 3.5 ns) and low dispersion of 50 ps. The device features complementary open-emitter outputs compatible with ECL logic, a common-mode input range from -2.5 V to +5 V, and a typical CMRR of 90 dB.
Feature Summary
- Ultrafast differential input stage ensures consistent propagation delay across varying signal types.
- Low propagation delay dispersion maintains timing accuracy under different overdrive conditions.
- Complementary digital outputs provide sufficient drive current for direct transmission line termination.
- Integrated latch enable inputs support tracking, track-hold, or sample-hold operational modes.
Applications
- High speed triggers
- Threshold detectors
- Window comparators
Procurement Notes
Verify the specific ordering suffix REEL indicates tape-and-reel packaging rather than tube. Confirm the component matches the industrial temperature grade (-25°C to +85°C) and the 16-pin SOIC package outline. Ensure supply voltages remain stable within ±5% for normal operation as specified in the datasheet.
Selection Notes
Select this component when high-speed signal comparison is required with minimal timing jitter. The dual-channel architecture allows for complex logic functions in a single package. Consider the open-emitter output requirement for external pull-down resistors and ECL termination networks during circuit design.
Part Context
The AD96687BR-REEL belongs to the AD96685/AD96687 family of ultrafast comparators. While the AD96685 provides a single channel, the AD96687 offers two channels with identical performance characteristics. This series is designed for applications demanding precise timing and fast response times in high-frequency environments.
Replacement Considerations
The AD96687BQ and AD96687BP are functionally equivalent dual comparators available in DIP and PLCC packages respectively. Verify pin compatibility and thermal impedance differences when substituting these variants.
FAQ
How should unused comparator inputs be handled?
Unused inputs must not float. They should be held at least one diode drop apart, and the LATCH ENABLE input should be grounded to prevent oscillation.
What is the purpose of the 50 ps delay dispersion parameter?
It measures the change in propagation delay resulting from variations in input overdrive, ensuring higher timing accuracy compared to other designs.
