HMC987 - ADI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

HMC987
Manufacturer

ADI
ChipWorker Part#

CW1432491467
Description

3.3V Low Noise 1:9 Fanout Buffer, DC - 8GHz
Documentation

Datasheet

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HMC987 Specifications

Attribute	Attribute Value

Part Number	HMC987
Manufacturer	ADI
ChipWorker Part#	CW1432491467
Documentation	Datasheet
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Product Lifecycle Status	Recommended for New Designs

Product Description

Product Details
The HMC987LP5E 1-to-9 fanout buffer is designed for low noise clock distribution. It is intended to generate relatively square wave outputs with rise/ fall times < 100 ps. The low skew and jitter outputs of the HMC987LP5E, combined with its fast rise/ fall times, leads to controllable low-noise switching of downstream circuits such as mixers, ADCs/DACs or SERDES devices. The noise floor is particularly important in these applications, when the clocknetwork bandwidth is wide enough to allow squarewave switching. Driven at 2 GHz, outputs of the HMC987LP5E have a noise floor of -166 dBc/Hz, corresponding to a jitter density of 0.6 asec/rtHz - or 50 fs over an 8 GHz bandwidth.
The input stage can be driven single-ended or differentially, in a variety of signal formats (CML, LVDS, LVPECL or CMOS), AC or DC coupled. The input stage also features adjustable input impedance. It has 8 LVPECL outputs, and 1 CML output with adjustable swing/power-level in 3 dB steps.
Individual output stages may be enabled or disabled for power-savings when not required using either hardware control pins, or under control of a serial-port interface.
Applications
SONET, Fibre Channel, GigE Clock Distribution
ADC/DAC Clock Distribution
Low Skew and Jitter Clock or Data Fanout
Wireless/Wired Communications
Level Translation
High Performance Instrumentation
Medical Imaging
Single-Ended to Differential Conversion
### Features and Benefits
Ultra Low Noise Floor: -166 dBc/Hz @ 2 GHz
LVPECL, LVDS, CML & CMOS Compatible Inputs
Up to 8 Differential or 16 Single-Ended LVPECL Outputs
One Adjustable Power CML/RF Output
Serial or Parallel Control, Hardware Chip-Enable
Power-Down Current < 1 uA
32 Lead 5x5 mm SMT Package 25 mm²

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