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Product Detailed Parameters
- Description：IC COMPARATOR 1 GEN PUR 16SMT
- Series：-
- Mfr：Analog Devices Inc.
- Package：Bulk
- Type：General Purpose
- Number of Elements：1
- Output Type：CML
- Voltage - Supply, Single/Dual (±)：3.3V
- Voltage - Input Offset (Max)：5mV
- Current - Input Bias (Max)：15µV
- Current - Output (Typ)：9mA
- Current - Quiescent (Max)：12mA
- CMRR, PSRR (Typ)：35dB PSRR
- Propagation Delay (Max)：0.12ns
- Hysteresis：1mV
- Operating Temperature：-40°C ~ 85°C
- Package / Case：16-LFQFN Exposed Pad
- Mounting Type：Surface Mount
- Supplier Device Package：16-SMT (3x3)
- Grade：-
- Qualification：-
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Overview
The HMC875LC3C is a SiGe monolithic ultra-fast clocked comparator featuring reduced swing CML (RSCML) output drivers and differential clock inputs. It supports 20 Gbps operation with a typical clock-to-data output delay of 120 ps, 60 ps minimum pulse width, and 0.2 ps rms random jitter. Overdrive and slew rate dispersion are typically 10 ps. The device operates with Vcci at +3.3V, Vee at -3V, and Vcco at 0V. Power dissipation is 130 mW. It features resistor-programmable hysteresis and an input bandwidth of 10 GHz.
Feature Summary
- Features high-speed latches with programmable hysteresis configured for clocked comparator operation.
- Includes differential clock control inputs and RSCML output stage designed to drive 400 mV into 50 ohms terminated to ground.
- Utilizes SiGe monolithic technology for ultra-fast performance suitable for broadband applications.
Applications
- ATE Applications
- High Speed Instrumentation
- Digital Receiver Systems
- Pulse Spectroscopy
- Clock & Data Restoration
Procurement Notes
Verify the current status of the HMC875LC3C as the datasheet indicates it is obsolete. Confirm availability through Analog Devices or authorized distributors, noting that original manufacturing by Hittite Microwave Corporation has ceased. Ensure compatibility with existing designs before procurement due to potential supply chain discontinuation.
Selection Notes
Select this component for designs requiring clocked comparison at speeds up to 20 Gbps with low jitter. Consider the specific power supply requirements (+3.3V, -3V, 0V) and the need for RF circuit design techniques for proper grounding. Evaluate if the RSCML output interface matches the downstream logic levels and termination requirements of the system.
Part Context
The HMC875LC3C belongs to the HMC series of comparators manufactured by Analog Devices Inc., formerly Hittite Microwave Corporation. It is part of a family of high-speed analog components designed for demanding RF and microwave applications. The device is housed in a 16-lead 3x3 mm SMT package with an alumina body.
Replacement Considerations
No public confirmed substitute part numbers are available in the provided documentation. As the datasheet marks the component as OBSOLETE, alternative sourcing or redesign may be necessary.
FAQ
What is the maximum clock frequency supported by the HMC875LC3C?
The maximum clock frequency (fmax) is 25 GHz.
How is hysteresis controlled in the HMC875LC3C?
Hysteresis is controlled via the HYS pin (Pin 14). To minimize hysteresis, leave the pin disconnected. Connect the pin to Vee with a resistor to add the desired amount of hysteresis.
