HMC955LC4B Datasheet, PDF (1/8 Pages) Hittite Microwave Corporation – 32 Gbps, 1:2 Demux w/ Programmable Output Voltage

v00.0511
HMC955LC4B
32 Gbps, 1:2 Demux
w/ Programmable Output Voltage
3-1
Typical Applications
The HMC955LC4B is ideal for:
• SONET OC-192
• Broadband Test & Measurement Equipment
• FPGA Interfacing Circuitry
• 16 G and 32 G Fiber Channel
• 100 Gbit Ethernet
• ADC Encoder
Features
Supports Data Rates up to 32 Gbps
660 mW Power Consumption
-3.3 V or +3.3 V Operation is Available
Supports Single-Ended and Differential Operation
24 Lead Ceramic 4x4 mm SMT Package: 16 mm²
Invert Port Allows Scrambling for SERDES
Application
Functional Diagram
General Description
The HMC955LC4B is a 1 to 2 Demux designed to
support data transmission rates up to 32 Gbps. The
demux uses both rising and falling edges of the half-rate
clock to sample the data in sequence 01-02 and latches
the data on the rising edge into the differential outputs.
The demux also has high-speed clock synchronous
invert input that allows for scrambling of the data. The
HMC955LC4B also features an output level control pin,
VR, which allows for loss compensation or for signal-
level optimization.
All differential inputs to the HMC955LC4B are CML
and terminated on-chip with 50 Ohms to the positive
supply, GND, and may be AC or DC coupled. The
differential CML outputs are source terminated to 50
Ohms and may also be AC or DC coupled. Outputs can
be connected directly to a 50 Ohm ground-terminated
system or drive devices with CML logic input. The
HMC955LC4B operates from a single -3.3 V supply
and is available in a ceramic ROHS-compliant 4x4 mm
SMT package.
Electrical Specifications, T_A = +25 ºC, Vee = -3.3 V, VR = 0 V
Parameter
Conditions
Min.
Power Supply Voltage (Vee)
-3.6
Power Supply Current
Maximum Data Rate
Maximum Clock Rate
Input Voltage Range, C and DIN
-1.5
Input Differential Range, C and DIN
0.1
Data Input Return Loss
Frequency <26 Gbps
Clock Input Return Loss
Frequency <16 GHz
Invert Input Return Loss
Frequency <16 GHz
Typ.
Max
Units
-3.3
-3.0
V
200
mA
32
Gbps
16
GHz
0.5
V
2.0
Vp-p
10
dB
10
dB
10
dB
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824
Phone: [phone] Fax: [phone] Order On-line at www.hittite.com
Application Support: Phone: [phone] or [e-mail]