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參數(shù)資料
| 型號： | MAX3746 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Full-Duplex LVDM Transceiver 14-TSSOP -40 to 85 |
| 中文描述： | 低功耗、622Mbps至3.2Gbps限幅放大器 |
| 文件頁數(shù)： | 8/12頁 |
| 文件大?。?/td> | 843K |
| 代理商： | MAX3746 |
M
Power Detect and Loss-of-Signal Indicator
The MAX3746 is equipped with multirate LOS circuitry
that indicates when the input signal is below a pro-
grammable threshold, set by resistor R
TH
at the TH pin
(see the
Typical Operating Characteristics
for appropri-
ate resistor sizing). An averaging RMS power detector
compares the input signal amplitude with this threshold
and feeds the signal-detect information to the open-col-
lector LOS output.
To prevent LOS chatter in the region of the pro-
grammed threshold, approximately 2dB of hysteresis is
built into the LOS assert/deassert function. Once
asserted, the LOS is not deasserted until the input
amplitude rises to the required level (V
DEASSERT
). (See
Figures 2 and 5.)
Design Procedure
Program the LOS Assert Threshold
External resistor, R
TH,
programs the loss-of-signal
threshold. See the LOS Threshold vs. R
TH
graph in the
Typical Operating Characteristics
to select the appro-
priate resistor.
Low-Power, 622Mbps to 3.2Gbps
Limiting Amplifier
8
_______________________________________________________________________________________
V
CC
I
CC
(SUPPLY CURRENT)
I
(CML
OUTPUT CURRENT)
50
R
TH
50
MAX3746
Figure 1. Power-Supply Current Measurement
1dB
6dB
0V
SIGNAL ON
MAX DEASSERT LEVEL
MIN ASSERT LEVEL
POWER-DETECT WINDOW
V
IN
TIME
SIGNAL OFF
Figure 2. LOS Assert Threshold Set 1dB Below the Minimum by
Receiver Sensitivity for Selected R
TH
50
50
IN+
IN-
0.25pF
0.25pF
V
CC
ESD
STRUCTURES
Figure 3. CML Input Buffer
Q3
Q4
Q1
V
CC
50
50
Q2
I2 = f (OUTPOL, DISABLE)
I1 = f (OUTPOL, DISABLE)
DISABLE
DATA
OUT+
OUT-
ESD
STRUCTURES
Figure 4. CML Output Buffer
相關PDF資料 |
PDF描述 |
|---|---|
| MAX3746ETE | Dual Multiplexed LVDM Repeater 16-SOIC -40 to 85 |
| MAX3747 | Dual Multiplexed LVDM Repeater 16-SOIC -40 to 85 |
| MAX3747-MAX3747A | Dual Multiplexed LVDM Repeater 16-SOIC -40 to 85 |
| MAX3747A | Dual Multiplexed LVDM Repeater 16-SOIC -40 to 85 |
| MAX3747AEUB | Dual Multiplexed LVDM Repeater 16-TSSOP -40 to 85 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| 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 |
| MAX3746HETE | 制造商:Maxim Integrated Products 功能描述:LOW-POWER, 622MBPS TO 3.2GBPS LIMITING AMPLIF - Rail/Tube |
| MAX3746HETE#G16 | 功能描述:限幅放大器 Low-Power 622Mbps to 3.2Gbps 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 |
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