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PDF ISL35111 Data sheet ( Hoja de datos )
| Número de pieza | ISL35111 | |
| Descripción | 11.1Gb/s Driver | |
| Fabricantes | Intersil | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de ISL35111 (archivo pdf) en la parte inferior de esta página. Total 9 Páginas | ||
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11.1Gb/s Driver
ISL35111
The ISL35111 is a de-emphasis driver with extended
functionality for advanced protocols operating with line rates
up to 11.1Gbps such as 10G Ethernet. The ISL35111 is a
high-speed driver/limiting amplifier with built-in de-emphasis
to drive twin-axial copper cables and compensate for the
frequency dependent attenuation of PCB traces, such as the
SFI channel in the 10G SFP+ specification (SFF-8431).
Used in conjunction with Intersil’s ISL36111 receive-side
equalizer, ISL35111 enables active copper cable assemblies
that support 10G serial data transmission over >15m of
twin-axial copper cables.
Operating on a single 1.2V power supply, the ISL35111
enables channel throughputs of 10Gbps to 11.1Gbps while
supporting lower data rates including 8.5, 6.25, 5, 4.25, 3.125,
2.5 and 1Gb/s. The ISL35111 uses current mode logic (CML)
input/output and is packaged in a 3mmx3mm 16 lead QFN.
1.2V
LOS CP-A CP-B Vdd
0.1mF
OUT [P]
IN [P]
0.1mF IQSLLx316111V1R1x
OUT [N]
IN [N]
0.1mF
0.1mF
GND DT
Features
• Supports data rates up to 11.1Gbps
• Low power (85mW typical)
• Low latency (<500ps)
• Adjustable output de-emphasis
• Single channel driver in a 3mmx3mm QFN package for
straight route-through architecture and simplified routing
• Supports 64b/66b encoded data – long run lengths
• Line silence preservation
• 1.2V supply voltage
• TX_Disable and TX_LOS
Applications
• Active copper cable modules (SFP+, QSFP, CXP, etc.)
• Optical transceiver modules (SFP+, QSFP, CXP, etc.)
• 10G Ethernet
• 40G/100G Ethernet
• Fibre Channel
• High-speed active cable assemblies
• High-speed printed circuit board (PCB) traces
Benefits
• Thinner gauge cable
• Extends cable reach greater than 3x
• Improved BER
1.2V
LOS
Vdd
0.1mF
DE-A DE-B
IN [P]
OUT [P]
0.1mF IQSLLx315111V1T1x
IN [N]
OUT [N]
TDSBL GND DT
July 19, 2012
FN6975.2
FIGURE 1. TYPICAL CABLE APPLICATION DIAGRAM
1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 |Copyright Intersil Americas Inc. 2009, 2010, 2012. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.
1 page  
ISL35111
Typical Performance Characteristics (Continued)
FIGURE 4. ISL35111 10.3125 GBPS OUTPUT AFTER A 22-INCH FR-408 TRACE, PRBS-31; DE-EMPHASIS 6
IN[P]
IN[N]
Limiting
Amplifier
Adjustable
De-Emphasis
Pre-
Driver
TDSBL
Output
Driver
OUT[P]
OUT[N]
DT
Signal
Detector
LOS
FIGURE 5. FUNCTIONAL BLOCK DIAGRAM OF THE ISL35111
Operation
The ISL35111 is an advanced driver for high-speed
interconnects. A functional diagram of ISL35111 is shown in
Figure 5. In addition to a de-emphasis circuit to compensate for
FR4 channel loss and restore signal fidelity, the ISL35111
contains unique integrated features to preserve special signaling
protocols typically broken by other drivers. The signal detect
function is used to mute the channel output when the input
signal falls below the level determined by the Detection
Threshold (DT) pin voltage. This function is intended to preserve
periods of line silence.
As illustrated in Figure 5, the core of the high-speed signal path
in the ISL35111 is a sophisticated driver followed by a
de-emphasis circuit. The device applies pre-distortion to
compensate for skin loss, dielectric loss, and impedance
discontinuities in the transmission channel.
CML Input and Output Buffers
The input and output buffers for the high-speed data channel in
the ISL35111 are implemented using CML. Equivalent input and
output circuits are shown in Figures 6 and 7.
5 FN6975.2
July 19, 2012
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet ISL35111.PDF ] | |
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