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參數(shù)資料
| 型號： | SY88149HLMG TR |
| 廠商： | Micrel Inc |
| 文件頁數(shù)： | 10/11頁 |
| 文件大小： | 0K |
| 描述： | IC POST AMP BURST GEPON/GPON 16M |
| 標(biāo)準(zhǔn)包裝： | 1,000 |
| 類型： | 限幅后置放大器 |
| 應(yīng)用： | 光纖學(xué)網(wǎng)絡(luò) |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-VFQFN 裸露焊盤，16-MLF? |
| 供應(yīng)商設(shè)備封裝： | 16-MLF?（3x3） |
| 包裝： | 帶卷 (TR) |
IDT / ICS HSTL FREQUENCY SYNTHESIZER
8
ICS8421002AGI-01 REV B
MARCH 02, 2009
ICS8421002I-01
FEMTOCLOCKS CRYSTAL-TO-HSTL FREQUENCY SYNTHESIZER
CRYSTAL INPUT INTERFACE
The ICS8421002I-01 has been characterized with 18pF parallel
resonant crystals. The capacitor values shown in
Figure 2 below
Figure 2. CRYSTAL INPUt INTERFACE
were determined using a 26.5625MHz 18pF parallel resonant
crystal and were chosen to minimize the ppm error.
APPLICATION INFORMATION
As in any high speed analog circuitry, the power supply pins
are vulnerable to random noise. The ICS8421002I-01 provides
separate power supplies to isolate any high switching
noise from the outputs to the internal PLL. V
DD, VDDA, and VDDO
should be individually connected to the power supply
plane through vias, and bypass capacitors should be
used for each pin. To achieve optimum jitter performance, power
supply isolation is required.
Figure 1 illustrates how
a 10
resistor along with a 10F and a .01F bypass
capacitor should be connected to each V
DDA.
POWER SUPPLY FILTERING TECHNIQUES
FIGURE 1. POWER SUPPLY FILTERING
10
V
DDA
10
F
.01
F
3.3V or 2.5V
.01
F
V
DD
C1
22p
X1
18pF Parallel Crystal
C2
22p
XTAL_OUT
XTAL_IN
INPUTS:
CRYSTAL INPUT:
For applications not requiring the use of the crystal oscillator input,
both XTAL_IN and XTAL_OUT can be left floating. Though not
required, but for additional protection, a 1k
resistor can be tied
from XTAL_IN to ground.
REF_CLK INPUT:
For applications not requiring the use of the reference clock,
it can be left floating. Though not required, but for additional
protection, a 1k
resistor can be tied from the REF_CLK to
ground.
LVCMOS CONTROL PINS:
All control pins have internal pull-ups or pull-downs; additional
resistance is not required but can be added for additional
protection. A 1k
resistor can be used.
RECOMMENDATIONS FOR UNUSED INPUT AND OUTPUT PINS
OUTPUTS:
HSTL OUTPUT
All unused HSTL outputs can be left floating. We recommend
that there is no trace attached. Both sides of the differential output
pair should either be left floating or terminated.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SY88149NDL | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:1.25Gbps Burst-Mode Limiting Amplifier |
| SY88149NDL_12 | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:1.25Gbps Burst-Mode Limiting Amplifier |
| SY88149NDLMG | 功能描述:限幅放大器 1.25Gbps GPON Burst Mode Limiting Amplifier RoHS:否 制造商:Micrel 輸入電壓范圍（最大值）:3.6 V 工作電源電壓:3.3 V 電源電流:40 mA 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:MSOP-10 封裝:Tube |
| SY88149NDLMG TR | 功能描述:限幅放大器 1.25Gbps GPON Burst Mode Limiting Amplifier RoHS:否 制造商:Micrel 輸入電壓范圍（最大值）:3.6 V 工作電源電壓:3.3 V 電源電流:40 mA 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:MSOP-10 封裝:Tube |
| SY88149NDLMGTR | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:1.25Gbps Burst-Mode Limiting Amplifier |
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