參數(shù)資料
型號(hào): ISL59533IKEZ
廠商: INTERSIL CORP
元件分類(lèi): 運(yùn)動(dòng)控制電子
英文描述: 32x32 Video Crosspoint with Differential Inputs
中文描述: 32-CHANNEL, CROSS POINT SWITCH, PBGA356
封裝: 27 X 27 MM, 1.17 MM HEIGHT, 1.27 MM PITCH, ROHS COMPLIANT, PLASTIC, MS-034A-BAL-2, BGA-356
文件頁(yè)數(shù): 22/24頁(yè)
文件大小: 1229K
代理商: ISL59533IKEZ
22
FN6222.0
March 13, 2006
demoboard without the socket. The parasitic capacitance of
the demoboard is about 2.7pF less.
To prove that the parasitic capacitance is the largest
contributor to the difference in bandwidth of the two boards,
we added 2.7pF at the output of the demoboard. Figure 50
shows the similarity in frequency response of the
engineering evaluation board alongside the demoboard
piggybacked with 2.7pF.
Linear Operating Region
In addition to bandwidth, one must also be very careful with
operating the device at its linear operating region. Figure 51
shows differential gain curve. The ISL59533 is a single
supply 5V device with its linear region is between 0.1 and
2V. The signal range is fine for most video signals whose
nominal signal amplitude is 1V. Both inputs should be
maintained at 0.3V or above for best operation. A DC restore
circuit is required to put the video signal within the linear
operating region of the crosspoint switch.
FIGURE 48. ENGINEERING EVALUATION BOARD
FIGURE 49. CUSTOMER DEMOBOARD
1
10
Frequency [MHz]
100
0.0
-1.2
-2.4
-3.6
-4.8
-6.0
G
Eng Eval
Demo
FIGURE 50. FREQUENCY RESPONSE - ENG EVAL BOARD vs
DEMO
FIGURE 51. DIFFERENTIAL GAIN RESPONSE
ISL59533
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