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參數(shù)資料
| 型號： | MAX3744E |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Full-Duplex LVDM Transceiver 14-SOIC -40 to 85 |
| 中文描述： | 2.7Gbps SFP互阻放大器，接收信號強度指示 |
| 文件頁數(shù)： | 7/10頁 |
| 文件大?。?/td> | 372K |
| 代理商： | MAX3744E |
M
2.7Gbps SFP Transimpedance
Amplifiers with RSSI
_______________________________________________________________________________________
7
Voltage Amplifier Stage
The voltage amplifier stage provides gain and converts
the single-ended input to differential outputs.
DC Cancellation Circuit
The DC cancellation circuit uses low-frequency feed-
back to remove the DC component of the input signal
(Figure 3). This feature centers the input signal within
the transimpedance amplifier
’
s linear range, thereby
reducing pulse-width distortion caused by large input
signals. The DC cancellation circuit is internally com-
pensated and therefore does not require external
capacitors.
Output Buffer
The output buffer provides a reverse-terminated voltage
output. The buffer is designed to drive a 100
differential
load between OUT+ and OUT-. The MAX3744 must be
DC-coupled to the MAX3748A. See Figures 4 and 5.
For optimum supply-noise rejection, the MAX3745
should be terminated with a matched load. If a single-
ended output is required, the unused output should be
terminated to a 50
resistor to V
CC
. The MAX3745
does not drive a DC-coupled, 50
grounded load;
however, it does drive a compatible 50
CML input.
Signal-Strength Indicator
The MAX3744 produces a signal proportional to the
average photodiode current. This is added to the com-
mon mode of the data outputs OUT+ and OUT-. This
signal is intended for use with the MAX3748A to pro-
vide a ground-referenced RSSI voltage.
Applications Information
Signal-Strength Indicator
The SFF-8472 digital diagnostic specification requires
monitoring of input receive power. The MAX3748A and
MAX3744 receiver chipset allows for the monitoring of
the average receive power by measuring the average
DC current of the photodiode.
AMPLITUDE
OUTPUT (LARGE SIGNALS)
TIME
OUTPUT (SMALL SIGNALS)
AMPLITUDE
INPUT FROM PHOTODIODE
TIME
INPUT AFTER DC CANCELLATION
Figure 2. MAX3744/MAX3745 Limited Output
Figure 3. DC Cancellation Effect on Input
OUT+
OUT-
50
50
V
CC
OUT+
OUT-
100
V
CC
Figure 4. Equivalent Output MAX3744
Figure 5. Equivalent Output MAX3745
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX3745D | Full-Duplex LVDM Transceiver 14-TSSOP -40 to 85 |
| MAX3745E | Full-Duplex LVDM Transceiver 14-TSSOP -40 to 85 |
| MAX3781 | MAX3781 Evaluation Kit |
| MAX3781EVKIT | MAX3781 Evaluation Kit |
| MAX378EWE | 8-Channel Analog Multiplexer |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX3744E/D-B2W WAF | 制造商:Maxim Integrated Products 功能描述: |
| MAX3745E/D | 制造商:Maxim Integrated Products 功能描述:2.7G SFP TRANSIMPEDANCE AMP W/RSSI |
| MAX3746ETE | 功能描述:限幅放大器 622Mbps to 3.2Gbps 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 |
| MAX3746ETE-T | 功能描述:限幅放大器 622Mbps to 3.2Gbps 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 |
| MAX3746EVKIT | 功能描述:限幅放大器 Evaluation Kit for the MAX3746 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 |
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