參數(shù)資料
型號(hào): MAX3991UTG+T
廠商: Maxim Integrated Products
文件頁(yè)數(shù): 2/12頁(yè)
文件大?。?/td> 0K
描述: IC DATA RECOVERY W/AMP 24-TQFN
標(biāo)準(zhǔn)包裝: 2,500
類型: 時(shí)鐘和數(shù)據(jù)恢復(fù)(CDR)
PLL:
主要目的: SONET/SDH.XFP 光學(xué)接收器
輸入: CML
輸出: CML
電路數(shù): 1
比率 - 輸入:輸出: 1:2
差分 - 輸入:輸出: 是/是
頻率 - 最大: 693.5MHz
電源電壓: 3 V ~ 3.6 V
工作溫度: 0°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 24-WFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝: 24-TQFN-EP(4x4)
包裝: 帶卷 (TR)
MAX3991
Applications Information
Exposed Pad (EP) Package
The exposed pad, 24-pin QFN incorporates features
that provide a very low thermal-resistance path for heat
removal from the IC. The pad is electrical ground on the
MAX3991 and must be soldered to the circuit board for
proper thermal and electrical performance.
Layout Considerations
For best performance, use good high-frequency layout
techniques. Filter voltage supplies, keep ground con-
nections short, and use multiple vias where possible.
Use controlled-impedance transmission lines to inter-
face with the MAX3991 high-speed inputs and outputs.
Power-supply decoupling should be placed as close to
VCC as possible. To reduce feedthrough, take care to
isolate the input signals from the output signals.
10Gbps Clock and Data Recovery
with Limiting Amplifier
10
______________________________________________________________________________________
Table 3. Functional Control
FCTL1
FCTL2
DESCRIPTION
00
Normal operation, serial clock output
disabled.
10
Standby power-down mode.
01
Serial data output disabled.
11
Serial clock output enabled for jitter
testing.
Figure 5. Reference Clock Termination
MAX3991
MAX3992
50
50
200
200
200
200
REFERENCE
CLOCK
REFERENCE
CLOCK
TRANSCEIVER TERMINATION
RECEIVER-ONLY TERMINATION
50
50
Figure 6. CML Input Model
SDI+
SDI-
VCC
50
50
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