DATASHEET ISL35111 FN6975 Rev 2.00 11.1Gb/s Driver Jul 12, 2012 The ISL35111 is a de-emphasis driver with extended Features functionality for advanced protocols operating with line rates Supports data rates up to 11.1Gbps up to 11.1Gbps such as 10G Ethernet. The ISL35111 is a high-speed driver/limiting amplifier with built-in de-emphasis Low power (85mW typical) to drive twin-axial copper cables and compensate for the Low latency (<500ps) frequency dependent attenuation of PCB traces, such as the Adjustable output de-emphasis SFI channel in the 10G SFP+ specification (SFF-8431). Single channel driver in a 3mmx3mm QFN package for Used in conjunction with Intersils ISL36111 receive-side straight route-through architecture and simplified routing equalizer, ISL35111 enables active copper cable assemblies that support 10G serial data transmission over >15m of Supports 64b/66b encoded data long run lengths twin-axial copper cables. Line silence preservation Operating on a single 1.2V power supply, the ISL35111 1.2V supply voltage enables channel throughputs of 10Gbps to 11.1Gbps while TX Disable and TX LOS 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) Applications input/output and is packaged in a 3mmx3mm 16 lead QFN. 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 1.2V LOS Vdd CP-A CP-B LOS Vdd 0.1mF 0.1mF DE-A DE-B 0.1mF OUT P IN P IN P OUT P ISL36111 QLx111VRx 0.1mF 0.1mF ISLQLx113511VT11x 0.1mF OUT N IN N IN N OUT N GND DT TDSBL DT GND FIGURE 1. TYPICAL CABLE APPLICATION DIAGRAM FN6975 Rev 2.00 Page 1 of 9 Jul 12, 2012ISL35111 Ordering Information PART NUMBER PART TEMP. RANGE PACKAGE PKG. (Notes 1, 2, 3) MARKING (C) (Pb-Free) DWG. ISL35111DRZ-TS 5111 0 to +85 16 Ld QFN (7 100 pcs.) L16.3x3B ISL35111DRZ-T7 5111 0 to +85 16 Ld QFN (7 1k pcs.) L16.3x3B NOTES: 1. -TS and -T7 suffix is for Tape and Reel. Please refer to TB347 for details on reel specifications. 2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. 3. For Moisture Sensitivity Level (MSL), please see device information page for ISL35111. For more information on MSL please see techbrief TB363. Pin Configuration ISL35111 (16 LD QFN) TOP VIEW 16 15 14 13 V 1 12 V DD DD IN P 2 11 OUT P EPAD IN N 3 10 OUT N TDSBL 4 9 V DD 576 8 Pin Descriptions PIN NAME PIN NUMBER DESCRIPTION V 1, 9, 12 Power supply. 1.2V supply voltage. The use of parallel 100pF and 47nF decoupling capacitors to ground is DD recommended for each of these pins for broad high-frequency noise suppression. IN P,N 2, 3 Driver differential input, CML. The use of 100nF low ESL/ESR MLCC capacitor with at least 6GHz frequency response is recommended. TDSBL 4 Transmit Disable pin. Disables the IC and enters a low power mode when pulled HIGH. Must be externally pulled LOW for normal operation. GND 5, 8, 13, 16 These pins must be grounded. DE A,B 6, 7 Control pins for setting de-emphasis. CMOS logic inputs. Pins are read as a 2-digit number to set the de-emphasis level. A is the MSB, and B is the LSB. Pins are internally pulled up and down through 23k resistors. OUT N,P 10, 11 Driver differential output, CML. The use of 100nF low ESL/ESR MLCC capacitor with at least 6GHz frequency response is recommended. LOS 14 LOS indicator. High output when Input signal is below DT threshold. DT 15 Detection Threshold. Reference DC voltage threshold for input signal power detection. Data output OUT P,N is muted when the power of the input signal IN P,N falls below the threshold. Tie to ground to disable electrical idle preservation and always enable the output driver. Exposed Pad - Exposed pad. For proper electrical and thermal performance, this pad should be connected to the PCB ground plane. FN6975 Rev 2.00 Page 2 of 9 Jul 12, 2012 GND GND DT DEA LOS DEB GND GND