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MAX3277U

更新时间： 2024-02-03 17:36:20
品牌 Logo 应用领域
美信 - MAXIM 光纤放大器
页数 文件大小 规格书
9页 1276K
描述
Low-Noise, Fibre Channel Transimpedance Amplifiers

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MAX3277U 技术参数

是否无铅： 含铅是否Rohs认证： 不符合
生命周期：Active零件包装代码：DIE
包装说明：DIE, DIE OR CHIP针数：9
Reach Compliance Code：not_compliantECCN代码：EAR99
HTS代码：8542.33.00.01Factory Lead Time：18 weeks
风险等级：5.78JESD-30 代码：R-XUUC-N9
JESD-609代码：e0功能数量：1
端子数量：9最高工作温度：85 °C
最低工作温度：封装主体材料：UNSPECIFIED
封装代码：DIE封装等效代码：DIE OR CHIP
封装形状：RECTANGULAR封装形式：UNCASED CHIP
峰值回流温度（摄氏度）：240电源：3.3 V
认证状态：Not Qualified子类别：Other Telecom ICs
最大压摆率：0.041 mA标称供电电压：3.3 V
表面贴装：YES技术：BIPOLAR
电信集成电路类型：TELECOM CIRCUIT温度等级：OTHER
端子面层：TIN LEAD端子形式：NO LEAD
端子位置：UPPER处于峰值回流温度下的最长时间：NOT SPECIFIED
Base Number Matches：1

MAX3277U 数据手册

 浏览型号MAX3277U的Datasheet PDF文件第3页浏览型号MAX3277U的Datasheet PDF文件第4页浏览型号MAX3277U的Datasheet PDF文件第5页浏览型号MAX3277U的Datasheet PDF文件第6页浏览型号MAX3277U的Datasheet PDF文件第8页浏览型号MAX3277U的Datasheet PDF文件第9页 
Low-Noise, Fibre Channel Transimpedance  
Amplifiers  
sensitivity. To obtain a system bit error rate (BER) of 1E-  
12, the signal-to-noise ratio must always exceed 14.1.  
The input sensitivity, expressed in average power, can  
be estimated as:  
form using chip and wire technology provides the best  
possible performance. Figure 5 shows a suggested lay-  
out for a TO header for the MAX3275/MAX3277.  
Special care should be taken to ensure that ESD at IN  
does not exceed 500V.  
14.1IN(re +1)×1000  
2ρ(re -1)  
Sensitivity=10 log  
dBm  
Photodiode Filter  
Supply voltage noise at the cathode of the photodiode  
produces a current I = C  
∆V/∆t, which reduces the  
PD  
where ρ is the photodiode responsivity in A/W and I is  
N
receiver sensitivity (C  
is the photodiode capaci-  
PD  
RMS current in Amps.  
tance). The filter resistor of the MAX3275/MAX3277,  
combined with an external capacitor, can be used to  
reduce this noise (see the Typical Application Circuit).  
Current generated by supply noise voltage is divided  
Input Optical Overload  
The overload is the largest input that the MAX3275/  
MAX3277 accept while meeting specifications. The  
optical overload can be estimated in terms of average  
power with the following equation:  
between C  
and C . The input noise current due  
PD  
FILTER  
to supply noise is (assuming the filter capacitor is much  
larger than the photodiode capacitance):  
2E-3 r +1 ×1000  
) ( e  
(
)
I
= (V  
)(C ) / (R  
)(C  
)
FILTER  
NOISE  
NOISE  
PD  
FILTER  
Overload=10 log  
dBm  
2ρ(re -1)  
If the amount of tolerable noise is known, the filter  
capacitor can be easily selected:  
Optical Linear Range  
The MAX3275/MAX3277 have high gain, which limits  
the output when the input signal exceeds 50µA . The  
P-P  
C
= (V  
)(C ) / (R  
NOISE  
)(I  
)
FILTER  
PD  
FILTER NOISE  
MAX3275/MAX3277 operate in a linear range (10% lin-  
earity) for inputs not exceeding:  
For example, with maximum noise voltage = 100mV  
,
P-P  
selected to  
C
= 0.85pF, R  
= 600Ω, and I  
PD  
FILTER  
NOISE  
be 350nA:  
50E-6 r +1 ×1000  
) ( e  
(
)
Linear Range=10 log  
dBm  
C
FILTER  
= (100mV)(0.85pF) / (600Ω)(350nA) = 400pF  
2ρ(re -1)  
Wire Bonding  
Layout Considerations  
For high-current density and reliable operation, the  
MAX3275/MAX3277 use gold metalization. Connections  
to the die should be made with gold wire only, using  
ball-bonding techniques. Wedge bonding is not recom-  
mended. Die thickness is typically 15 mils (0.4mm).  
Noise performance and bandwidth will be adversely  
affected by capacitance at the IN pad. Minimize  
capacitance on this pad and select a low-capacitance  
photodiode. Assembling the MAX3275/MAX3277 in die  
Pad Coordinates  
V
CC  
PAD#  
COORDINATES (µm)  
16, 39  
C
FILTER  
1
2
3
4
5
6
7
8
9
16, 372  
PHOTODIODE  
16, 806  
CAP  
358, 806  
OUT+  
OUT-  
358, 341  
358, 36  
362, -116  
250, -116  
138, -116  
MAX3275  
OUTPUT POLARITIES  
REVERSED FOR MAX3277  
CASE IS GROUND  
Figure 5. Suggested Layout for TO-46 Header  
_______________________________________________________________________________________  
7
1...456789

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