5 FN6975.2 July 19, 2012 Operation The ISL35111 is an advanced driver for high-speed interconnects. A functional diagram of ISL35111 i" />
參數(shù)資料
型號: ISL35111DRZ-T7
廠商: Intersil
文件頁數(shù): 5/9頁
文件大?。?/td> 0K
描述: IC DE-EMP DRIVER SGL 16QFN
標準包裝: 1,000
應用: 以太網(wǎng)
電源電壓: 1.1 V ~ 1.3 V
封裝/外殼: 16-VFQFN 裸露焊盤
供應商設備封裝: 16-QFN(3x3)
包裝: 帶卷 (TR)
安裝類型: 表面貼裝
ISL35111
5
FN6975.2
July 19, 2012
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.
FIGURE 4. ISL35111 10.3125 GBPS OUTPUT AFTER A 22-INCH FR-408 TRACE, PRBS-31; DE-EMPHASIS 6
Typical Performance Characteristics (Continued)
Signal
Detector
IN[P]
IN[N]
DT
LOS
OUT[N]
OUT[P]
Adjustable
De-Emphasis
DEA
DEB
Limiting
Amplifier
Output
Driver
Pre-
Driver
TDSBL
FIGURE 5. FUNCTIONAL BLOCK DIAGRAM OF THE ISL35111
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