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Product Detailed Parameters
- Description：IC COMPARATOR ECL UFAST 16LFCSP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Bulk
- Type：-
- Number of Elements：-
- Output Type：-
- Voltage - Supply, Single/Dual (±)：-
- Voltage - Input Offset (Max)：-
- Current - Input Bias (Max)：-
- Current - Output (Typ)：-
- Current - Quiescent (Max)：-
- CMRR, PSRR (Typ)：-
- Propagation Delay (Max)：-
- Hysteresis：-
- Operating Temperature：-
- Package / Case：-
- Mounting Type：-
- Supplier Device Package：-
- Grade：-
- Qualification：-
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Overview
The ADCMP581BCP-RL7 is an ultrafast voltage comparator fabricated on Analog Devices' proprietary XFCB3 Silicon Germanium (SiGe) bipolar process. It features reduced swing ECL (negative ECL) output drivers designed to directly drive 400 mV into 50 Ω transmission lines terminated to −2 V. The device offers a propagation delay of 180 ps and supports 10 Gbps operation with 200 fs random jitter. It operates with ±5 V power supplies, enabling a wide input range from −2 V to +3 V. The inputs include 50 Ω on-chip termination resistors that can be individually disabled for high impedance applications.
Feature Summary
- Features reduced swing negative ECL output drivers optimized for direct driving of 50 Ω transmission lines terminated to −2 V.
- Includes differential latch control with internal 50 Ω termination to the independent VTT pin for interfacing with CML or ECL logic.
- Provides resistor-programmable hysteresis via the HYS control pin to prevent output oscillation during slow input transitions.
- Integrates 50 Ω on-chip termination resistors at both VP and VN input pins, which can be left open for high impedance requirements.
Applications
- Automatic test equipment (ATE)
- High speed instrumentation
- Medical imaging and diagnostics
- Clock and data signal restoration
Procurement Notes
Verify the specific ordering suffix RL7 corresponds to the Tape and Reel packaging configuration required for automated assembly processes. Confirm that the supply voltages align with the specified ±5 V requirement for optimal performance. Ensure the PCB layout accommodates the 16-lead LFCSP package dimensions and provides adequate thermal dissipation through the exposed pad.
Selection Notes
Select this component when low jitter and fast propagation delay are critical for high-speed signal processing. The NECL output stage is suitable for systems requiring compatibility with existing ECL logic families. Consider the integrated latch feature if holding the comparison result is necessary before subsequent digital processing stages.
Part Context
This part belongs to the ADCMP580/ADCMP581/ADCMP582 family of ultrafast SiGe voltage comparators. While the ADCMP580 utilizes CML outputs and the ADCMP582 uses PECL outputs, the ADCMP581 specifically employs reduced swing ECL (NECL) drivers. All variants share identical input characteristics, propagation delay specifications, and latch functionality within the same 16-lead LFCSP package.
Replacement Considerations
Direct functional replacements within the same family include the ADCMP580BCPZ-RL7 for CML outputs and the ADCMP582BCPZ-RL7 for PECL outputs. Verify that the target system's receiver logic levels match the specific output swing and termination requirements of the replacement device.
