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Product Detailed Parameters
- Description：IC COMPARATOR 1 W/LATCH 16SOIC
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR)
- Type：with Latch
- Number of Elements：1
- Output Type：Complementary, Differential, 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 AD96685BRZ-REEL is a single-channel ultrafast voltage comparator from Analog Devices, packaged in a 16-pin SOIC. It features a propagation delay of 2.5 ns and a delay dispersion of 50 ps. The device operates on dual power supplies of +5 V and -5.2 V, consuming 118 mW per comparator. It provides complementary open-emitter outputs compatible with ECL logic families.
Feature Summary
- Ultrafast differential input stage ensures consistent propagation delay across various signal types within a wide common-mode range.
- Complementary digital outputs provide sufficient drive current to directly interface with transmission lines terminated at -2.0 V.
- Integrated level-sensitive latch input enables flexible operation modes including tracking, track-hold, and sample-hold configurations.
Applications
- High speed triggers
- Threshold detectors
- Window comparators
- Peak detectors
Procurement Notes
Verify the REEL suffix indicates tape-and-reel packaging rather than tube packaging when sourcing components. Confirm the BRZ designation corresponds to the industrial temperature range of -25°C to +85°C. Ensure compatibility with standard 16-pin SOIC footprints during procurement planning.
Selection Notes
Select this component for applications requiring precise timing consistency under varying overdrive conditions due to its low delay dispersion. Consider the dual supply requirement of +5V and -5.2V during power budgeting. Evaluate the need for external pull-down resistors for the open-emitter outputs based on system impedance requirements.
Part Context
This part belongs to the AD96685/AD96687 family of ultrafast comparators. While the AD96685 offers a single channel, the AD96687 provides dual channels with identical performance characteristics. Both share the same high-speed architecture and are designed for demanding high-frequency signal processing tasks.
Replacement Considerations
The AD96687BR-REEL serves as a dual-channel alternative within the same package footprint. Verify pinout compatibility if substituting with other series comparators, as output configurations may differ significantly.
FAQ
How does the device handle unused inputs in multi-channel variants?
Unused inputs should not be left floating to prevent oscillation caused by high internal gain; they must be held apart by at least one diode drop while grounding the latch enable input.
What is the function of the LATCH ENABLE input?
The LATCH ENABLE input controls the operating mode, allowing the output to either track input changes or reflect the state prior to latching, effectively enabling track-hold or sample-hold operations.
