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參數(shù)資料
| 型號： | MAX3793 |
| 廠商： | Maxim Integrated Products, Inc. |
| 元件分類： | 運動控制電子 |
| 英文描述： | 1Gbps to 4.25Gbps Multirate Transimpedance Amplifier with Photocurrent Monitor |
| 中文描述： | 1Gbps至4.25Gbps多速率互阻放大器，具有光電流監(jiān)測器 |
| 文件頁數(shù)： | 9/11頁 |
| 文件大?。?/td> | 693K |
| 代理商： | MAX3793 |
Applications Information
Optical Power Relations
Many of the MAX3793 specifications relate to the input
signal amplitude. When working with optical receivers,
the input is sometimes expressed in terms of average
optical power and extinction ratio. Figure 5 and Table 1
show relations that are helpful for converting optical
power to input signal when designing with the
MAX3793.
Optical Sensitivity Calculation
The input-referred RMS noise current (I
N
) of the
MAX3793 generally determines the receiver 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:
where,
ρ
is the photodiode responsivity in A/W, and I
N
is the RMS noise current in amps.
Input Optical Overload
Overload is the largest input that the MAX3793 accepts
while meeting DJ specifications. Optical overload can
be estimated in terms of average power with the follow-
ing equation:
Optical Linear Range
The MAX3793 has high gain, which limits the output
when the input signal exceeds 50μA
P-P
. The MAX3793
operates in a linear range for inputs not exceeding:
Linear Range
A
r
(
r
dBm
e
e
log
×
×
ρ
×
=
μ
+
(
)
×
)
10
50
2
1
1
1000
Overload
I
×
dBm
OL
log
×
=
10
2
1000
ρ
Sensitivity
I
r
r
dBm
N
×
e
e
log
×
ρ
(
)
×
=
+
(
)
)
10
14.
2
1
1
1000
M
1Gbps to 4.25Gbps Multirate Transimpedance
Amplifier with Photocurrent Monitor
_______________________________________________________________________________________
9
PO
PI
P
AVG
TIME
O
Figure 5. Optical Power Relations
PARAMETER
SYMBOL
P
AVG
r
e
RELATION
P
AVG
= (P0 + P1) / 2
r
e
= P1 / P0
Average power
Extinction ratio
Optical power of a 1
P1
Optical power of a 0
P0
P0 = 2P
AVG
/ (r
e
+ 1)
Optical modulation amplitude
P
IN
Table 1. Optical Power Relations*
P
P
AVG
2
r
r
e
+
e
1
1
=
P
P
P
P
IN
AVG
r
r
e
e
+
=
=
1
0
2
*
Assuming a 50% average mark density.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX3793E/D | 功能描述:多路器開關(guān) IC RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 開關(guān)數(shù)量:4 開啟電阻（最大值）:7 Ohms 開啟時間（最大值）: 關(guān)閉時間（最大值）: 傳播延遲時間:0.25 ns 工作電源電壓:2.3 V to 3.6 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UQFN-16 |
| MAX3793EVKIT | 功能描述:交換機 IC 開發(fā)工具 RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:USB Power Switches 工具用于評估:MAX4984E 工作電源電壓:2.8 V to 5.5 V |
| MAX3795ETG | 功能描述:激光驅(qū)動器 1-4.25Gbps VCSEL Driver RoHS:否 制造商:Micrel 數(shù)據(jù)速率:4.25 Gbps 工作電源電壓:3 V to 3.6 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:QFN-16 封裝:Tube |
| MAX3795ETG+ | 功能描述:激光驅(qū)動器 1-4.25Gbps VCSEL Driver RoHS:否 制造商:Micrel 數(shù)據(jù)速率:4.25 Gbps 工作電源電壓:3 V to 3.6 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:QFN-16 封裝:Tube |
| MAX3795ETG+T | 功能描述:激光驅(qū)動器 1-4.25Gbps VCSEL Driver RoHS:否 制造商:Micrel 數(shù)據(jù)速率:4.25 Gbps 工作電源電壓:3 V to 3.6 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:QFN-16 封裝:Tube |
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