HMC987LP5E v03.1112 LOW NOISE 1:9 FANOUT BUFFER DC - 8 GHz Typical Applications Features t he is suitable for: u ltra l ow n oise Floor: -166 dbc/Hz 2 GHz Wideband: DC - 8 GHz o perating Frequency son Et , Fibre Channel, GigE Clock Distribution Flexible input interface: ADC/DAC Clock Distribution l VPECl , l VDs , CMl , CMos Compatible l ow s kew and Jitter Clock or Data Fanout AC or DC Coupling Wireless/Wired Communications o n-Chip t ermination 50 or 150 (100/300 Diff.) l evel t ranslation Multiple o utput Drivers: High Performance instrumentation up to 8 Differential or 16 single-Ended lVPECl Medical imaging o utputs: s ingle-Ended to Differential Conversion 800 mVpp into 50 s ingle-Ended (+3 dbm Fo) o ne Adjustable Power CMl /r F o utput: -9 to 3 dbm s ingle-Ended s erial or Parallel Control, Hardware Chip-Enable Power-Down Current < 1 uA 2 32 l ead 5x5 mm s Mt Package 25 mm Functional Diagram General Description t he 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. t he low skew and jitter outputs of the HMC987l P5E, combined with its fast rise/fall times, leads to controllable low-noise switching of downstream circuits such as mixers, ADCs/DACs or sEr DEs devices. t he noise floor is particularly important in these applications, when the clock-network bandwidth is wide enough to allow square-wave switching. Driven at 2 GHz, outputs of the HMC987l P5E have a noise floor of -166 d bc/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 , l VDs, l VPECl or CMos ), AC or DC coupled. t he 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. Information furnished by Analog Devices is believed to be accurate and reliable. However, no For price, delivery, and to place orders: Analog Devices, Inc., For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824 responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106 rights of third parties that may result from its use. Specifications subject to change without notice. No Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Phone: 781-329-4700 Order online at www.analog.com license is granted by implication or otherwise under any patent or patent rights of Analog Devices. 1 Trademarks and registered trademarks are the property of their respective owners. Application Support: Phone: 1-800-ANALOG-D Application Support: Phone: 978-250-3343 or apps hittite.com Clo Ck Distribution - s MtHMC987LP5E v03.1112 LOW NOISE 1:9 FANOUT BUFFER DC - 8 GHz Table 1. Electrical Specifications u nless otherwise specified: t = 27 C, r egulated VDD of 3.3 V, 2 GHz, 6 dbm in, AC coupled single ended input and output, 120 /leg DC termination, AC coupled into 50 measuring load. Effects of customer eval board (Evaluation PCb s chematic) are de-embedded. For convenience, all voltages are referenced to Gn D (0V), but negative supply references are acceptable. Parameter Conditions Min. t yp. Max. u nits DC input Characteristics VDD (VCCHF=VCCA=VCCb =VCCr F) 3.0 3.3 3.6 V input Common Mode Voltage 1.35 2 VDD - 0.2 V input s wing (s ingle Ended) 0.2 2 Vpp input Capacitance 0.5 pF input impedance s ingle-Ended s electable 50 / 150 Differential s electable 100 / 300 base current under external input bias Current DC bias, internal termination 165 A open. l ogic inputs s witching t hreshold (Vsw) ViH/Vil within 50 mV of Vsw 38 47 54 %VDD l VPECl DC o utput Characteristics o utput Voltage High l evel 3.3 V = 2.25 VDD - 1.2 VDD - 1.0 VDD - 0.8 V o uput Voltage Common Mode 3.3 V = 1.82 VDD - 1.7 VDD - 1.5 VDD - 1.3 V o utput Voltage l ow l evel 3.3 V = 1.42 VDD - 2.1 VDD - 1.9 VDD - 1.7 V o utput Voltage, s ingle-Ended 800 mVpp AC Performance 1 input/o utput Frequency > 400 Vpp single-ended DC 8000 MHz 3 db bandwidth 4000 MHz o utput r ise/Fall t ime 20% to 80% 65 ps Across all l VPECl outputs t ypical Channel s kew 0 1.5 3.1 ps relative to channel 1 s mall s ignal Gain s 21 1000 MHz 26 db 4000 MHz 15 db input P1db 1000 MHz -20 dbm 4000 MHz -10 dbm s aturated Power in fundamental tone (s ingle-Ended) 1000 MHz 2.5 dbm 4000 MHz -0.5 dbm o utput Voltage s wing (Vppd into 100 ) 700 MHz 1.5 1.6 1.7 V 2000 MHz 1.2 1.3 1.4 V 1 For frequencies < 700 MHz, square wave signals should be used to maintain high quality phase noise performance. Information furnished by Analog Devices is believed to be accurate and reliable. However, no For price, delivery, and to place orders: Analog Devices, Inc., For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824 responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106 rights of third parties that may result from its use. Specifications subject to change without notice. No Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Phone: 781-329-4700 Order online at www.analog.com license is granted by implication or otherwise under any patent or patent rights of Analog Devices. 2 Trademarks and registered trademarks are the property of their respective owners. Application Support: Phone: 1-800-ANALOG-D Application Support: Phone: 978-250-3343 or apps hittite.com Clo Ck Distribution - s Mt