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參數(shù)資料
| 型號(hào)： | MAX3748ETE |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類(lèi)： | 數(shù)字傳輸電路 |
| 英文描述： | Dual Multiplexed LVDM Repeater 16-TSSOP -40 to 85 |
| 中文描述： | ATM/SONET/SDH SUPPORT CIRCUIT, QCC16 |
| 封裝： | 3 X 3 MM, 0.80 MM HEIGHT, MO-220WEED-2, TQFN-16 |
| 文件頁(yè)數(shù)： | 6/11頁(yè) |
| 文件大?。?/td> | 414K |
| 代理商： | MAX3748ETE |
M
Detailed Description
The limiting amplifier consists of an input buffer, a multi-
stage amplifier, offset correction circuitry, an output
buffer, power-detection circuitry, and signal-detect cir-
cuitry (see
Functional Diagram
).
Input Buffer
The input buffer is shown in Figure 3. It provides 50
termination for each input signal IN+ and IN-. The
MAX3748/MAX3748A can be DC- or AC-coupled to a
TIA (TIA output offset degrades receiver performance if
DC-coupled). The CML input buffer is optimized for the
MAX3744 TIA.
Gain Stage
The high-bandwidth gain stage provides approximately
53dB of gain.
Compact 155Mbps to 3.2Gbps
Limiting Amplifier
6
_______________________________________________________________________________________
Pin Description
PIN
1, 4, 12
2
3
NAME
V
CC
IN+
IN-
FUNCTION
Supply Voltage
Noninverted Input Signal, CML
Inverted Input Signal, CML
5
TH
Loss-of-Signal Threshold Pin. Resistor to ground (R
TH
) sets the LOS threshold. Connecting this pin to
V
CC
disables the LOS circuitry and reduces power consumption.
Disable Input, CMOS/TTL. The data outputs are held static when this pin is asserted high. The LOS
function remains active when the outputs are disabled, CMOS. On the MAX3748, this pin does not
include ESD protection. If routed through the DS1858/DS1859 controller IC, no additional ESD protection
is required. On the MAX3748A, this pin has ESD protection.
6
DISABLE
7
LOS
Noninverted Loss-of-Signal Output. LOS is asserted high when the signal drops below the assert
threshold set by the TH input. The output is open collector (Figure 5). On the MAX3748, this pin does not
include ESD protection. If routed through the DS1858/DS1859 controller IC, no additional ESD protection
is required. On the MAX3748A, this pin has ESD protection.
Supply Ground
8, 16
GND
9
OUTPOL
Output Polarity Control Input. Connect to GND for an inversion of polarity through the limiting amplifier
and connect to V
CC
for normal operation.
Inverted Data Output, CML
Noninverted Data Output, CML
Received-Signal-Strength Indicator. This current output can be used to obtain a ground-referenced
voltage proportional to photodiode current with the MAX3744 by connecting an external resistor between
this pin and GND.
Offset Correction Loop Capacitor Connection. A capacitor connected between this pin and CAZ1
extends the time constant of the offset correction loop. Typical value of C
AZ
is 0.1μF. The offset
correction is disabled when the CAZ1 and CAZ2 pins are shorted together.
O fset C or ecti on Loop C ap aci or C onnecti on. A cap aci or connected b etw een thi s p n and C AZ 2 extend s
the ti m e constant of the offset cor ecti on l oop Typ cal val ue of C
A Z
i s 0.1μF. The offset cor ecti on i s d sab ed
w hen the C AZ 1 and C AZ 2 p ns ar e shor ed tog ether
10
11
OUT-
OUT+
13
RSSI
14
CAZ2
15
CAZ1
EP
Exposed
paddle
Connect the exposed paddle to board ground for optimal electrical and thermal performance.
V
CC
I
CC
(SUPPLY CURRENT)
I
(CML
OUTPUT CURRENT)
50
R
TH
50
MAX3748/
MAX3748A
Figure 1. Power-Supply Current Measurement
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX3748AETE | Circular Connector; No. of Contacts:53; Series:MS27467; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:23; Circular Contact Gender:Pin; Circular Shell Style:Straight Plug; Insert Arrangement:23-53 RoHS Compliant: No |
| MAX3750 | Quad LVDM Transmitter 16-SOIC -40 to 85 |
| MAX3751CEE | +3.3V, 2.125Gbps/1.0625Gbps Fibre Channel Port Bypass ICs |
| MAX3750CEE | +3.3V, 2.125Gbps/1.0625Gbps Fibre Channel Port Bypass ICs |
| MAX3831 | +3.3V, 2.5Gbps, SDH/SONET, 4-Channel Interconnect Mux/Demux ICs with Clock Generator |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX3748ETE-T | 制造商:Maxim Integrated Products 功能描述:COMPACT 155MBPS TO 3.2GBPS LIMITING AMPLIFIER - Tape and Reel |
| MAX3748HETE | 制造商:Maxim Integrated Products 功能描述:#EMPTY - Rail/Tube |
| MAX3748HETE#G16 | 功能描述:限幅放大器 155-4.25Gbps SFP 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 |
| MAX3748HETE#TG16 | 功能描述:限幅放大器 155-4.25Gbps SFP 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 |
| MAX3748HETE+ | 功能描述:限幅放大器 155-4.25Gbps SFP 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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