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Product Detailed Parameters
- Description：IC COMPARATOR 1 W/LATCH 16SOIC
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR),Cut Tape (CT),Bulk
- 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 AD96685BR-REEL is a single-channel ultrafast voltage comparator from Analog Devices, packaged in a 16-pin SOIC. It operates on dual supplies of +5 V and -5.2 V with a typical power consumption of 118 mW per comparator. The device features a propagation delay of 2.5 ns (max 3.5 ns) and a low dispersion of 50 ps. It supports an input common-mode range from -2.5 V to +5 V and provides complementary open-emitter outputs compatible with ECL logic families.
Feature Summary
- Features a fast differential input stage ensuring consistent propagation delay across various signal types.
- Includes a level-sensitive latch input enabling tracking, track-hold, or sample-hold operational modes.
- Outputs are complementary digital signals fully compatible with ECL 10K and 10KH logic families.
Applications
- High speed triggers
- Threshold detectors
- Window comparators
- Peak detectors
Procurement Notes
Verify the specific ordering suffix REEL indicates tape-and-reel packaging for automated assembly. Confirm that the BR suffix corresponds to the industrial temperature range of -25°C to +85°C. Ensure compatibility with existing 16-pin SOIC footprints and validate supply voltage requirements against system specifications before procurement.
Selection Notes
Select this component when a single high-speed comparator with latching capability is required. It is suitable for designs needing direct drive of 50 Ω transmission lines terminated at -2 V. Consider the AD96687 if dual channels are needed within the same package footprint or performance profile.
Part Context
The AD96685 belongs to the AD9668x series of ultrafast comparators designed for high-speed applications. It complements the dual-channel AD96687, offering identical electrical performance in a single-channel configuration. The series is characterized by low power consumption and high precision differential inputs for timing accuracy.
Replacement Considerations
The AD96687BR serves as a dual-channel alternative within the same package family. For single-channel replacements, verify pinout compatibility with other 16-pin SOIC comparators, though direct functional equivalents may require circuit adjustments due to output stage differences.
FAQ
How should the LATCH ENABLE input be handled if latching is not used?
If the latching function is not utilized, the LATCH ENABLE input should be grounded, as ground represents an ECL logic HIGH state which places the device in compare mode.
What is the recommended termination for the open-emitter outputs?
The outputs are designed to be terminated through 50 Ω resistors to -2.0 V, or any other equivalent ECL termination scheme, to ensure proper transition times and prevent ringing.
