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參數(shù)資料
| 型號(hào)： | MAX3260 |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類(lèi)： | 衰減器 |
| 英文描述： | 32-Bit Digital Signal Controller with Flash 100-LQFP -40 to 85 |
| 中文描述： | RF/MICROWAVE WIDE BAND LOW POWER AMPLIFIER |
| 文件頁(yè)數(shù)： | 3/4頁(yè) |
| 文件大?。?/td> | 57K |
| 代理商： | MAX3260 |
M
1GHz Transimpedanc e Preamplifier
with 25dB Dynamic Range
_______________________________________________________________________________________
3
EYE DIAGRAM
1Gbps
M
1
2.0905V
1.0905V
37.98ns
250ps/div
40.48ns
14
0
SUPPLY CURRENT vs. TEMPERATURE
(OUTPUT AC COUPLED)
M
TEMPERATURE (
°
C)
S
16
18
20
22
24
26
28
30
20
40
60
80
100
5.25V
5.0V
4.75V
____________________________Typic al Operating Charac teristic s (c ontinued)
(T
J
= +27°C, unless otherwise noted.)
_______________Detailed Desc ription
The MAX3260 is a high-speed transimpedance amplifi-
er, designed to accomodate input currents with a large
dynamic range. This circuit is optimized to operate in a
1062Mbps Fibre Channel reciever, and is also suitable
for use in 622Mbps SONET applications.
The MAX3260 employs shunt-shunt feedback around a
bipolar amplifier. The resulting circuit provides an
inverted current-to-voltage conversion. The conversion
gain is nominally -2000V/A.
Modern fiber-optic communications systems place
many requirements on transimpedance preamplifiers.
Power budgets are important when considering a pre-
amp, since the circuit will generally be placed into a
small module or header, which limits the amount of heat
dissipation. In addition, the signal presented to the pre-
amp may carry an 18dB to 20dB dynamic range, which
must be amplified linearly to prevent the addition of jit-
ter. Finally, preamp noise generally determines the
receiver sensitivity, and must be held to a minimum.
The MAX3260 employs several techniques to address
the needs of fiber-optic preamplifiers. The output of the
MAX3260 operates in the 1V to 2V range (depending
on the average input) to keep output standing current
at a minimum. The reduced output voltage helps keep
power consumption low, but also reduces the dynamic
range of the output stage. Fiber communications tran-
simpedance amplifiers commonly use dynamic control
of the shunt-shunt feedback loop to vary the gain. The
unwanted side-effect of this technique is a circuit band-
width that varies with input current. To prevent output-
stage saturation, the MAX3260 employs a DC-restore
circuit. As input signal power increases, DC current is
drawn away from the input node of the amplifier. This
reduces the DC gain of the amplifier without affecting
the small-signal performance. To prevent noise feed-
back at low signals, an integrated comparator senses
the power level and disables the DC-restore function.
The MAX3260’s filter output provides a convenient volt-
age source for a photodiode, especially when the circuit
will be placed into a TO-style header with the photodi-
ode. The filter output is connected to V
CC
through an
on-chip 1k
resistor. In combination with a bypass
capacitor, the filter function reduces the bandwidth at
the anode of the photodiode, therefore significantly
reducing the amount of noise at the cathode. The filter
connection can be left unconnected if not used.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX32600-KIT# | 制造商:Maxim Integrated Products 功能描述:EVALUATION KIT FOR MAX32600 SECURE SENSOR MEASUREMENT UC - Boxed Product (Development Kits) |
| MAX3261C/D DIE | 制造商:Maxim Integrated Products 功能描述: |
| MAX3261CCJ | 功能描述:激光驅(qū)動(dòng)器 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 |
| MAX3261CCJ-T | 功能描述:激光驅(qū)動(dòng)器 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 |
| MAX3261EVKIT-SO | 功能描述:電源管理IC開(kāi)發(fā)工具 RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類(lèi)型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
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