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參數(shù)資料
| 型號(hào)： | MAX3805 |
| 廠(chǎng)商： | Maxim Integrated Products, Inc. |
| 英文描述： | 10.7Gbps Adaptive Receive Equalizer |
| 中文描述： | 10.7Gbps自適應(yīng)接收均衡器 |
| 文件頁(yè)數(shù)： | 5/10頁(yè) |
| 文件大?。?/td> | 301K |
| 代理商： | MAX3805 |
Detailed Description and
Applications Information
The MAX3805 adaptive equalizer is designed to oper-
ate with 9.95Gbps to 10.7Gbps PRBS nonreturn-to-zero
(NRZ) data at the receive end of a transmission line,
typically differential 6-mil FR-4 PC board. It adaptively
corrects intersymbol interference caused by frequency-
dependent path loss. It can also be used with coaxial
cable links and with transmission lines that include well-
engineered connectors, as long as the total path loss is
relatively smooth and does not exceed 20dB at 5GHz.
The signal path for the MAX3805 consists of a CML
input stage, two amplifiers feeding a pair of variable
attenuators controlled by feedback, and a limiting
amplifier with a CML output stage. An enable input, EN,
is used to control the output stage. A signal-detect out-
put, SD, indicates when input signal to the transmission
line is above 220mV
P-P
or below 200mV
P-P
, typically.
See the
Functional Diagram
.
CML Input and Output Buffers
The MAX3805 CML input and output buffers are inter-
nally terminated with 50
to V
CC1
and V
CC2
, respec-
tively. The input and output circuitry have separate
voltage connections to control noise coupling and pro-
vide DC-coupling to +1.8V, +2.5V, or +3.3V CML. If
desired, the CML inputs and outputs can be AC-cou-
pled. See Figure 1 for the output structure.
The low-frequency cutoff of the input-stage offset-can-
cellation circuit is nominally 21kHz.
For single-ended operation (typically coaxial cable
links), the input must be AC-coupled; connect the
unused input to V
CC1
using a series combination of an
AC-coupling capacitor and a 50
resistor, as shown in
Figure 2. Note that the MAX3805 is specified for differ-
ential operation, and the performance may be reduced
in single-ended operation.
M
10.7Gbps Adaptive Receive Equalizer
_______________________________________________________________________________________
5
Pin Description
PIN
1
2
3
4
5
6
7
8
9, 12
10
11
13
14
15
16
NAME
V
CC1
SDI+
SDI-
V
CC1
GND
SD
EN
GND
V
CC2
SDO-
SDO+
HFPD
LFPD
V
CC
GND
FUNCTION
Supply Voltage, CML Input (1.8V to V
CC
)
Positive Differential Serial Data Input, CML
Negative Differential Serial Data Input, CML
Supply Voltage, CML Input (1.8V to V
CC
)
Supply Ground
Signal-Detect Output, LVCMOS. Low indicates <200mV
P-P
, high indicates >220mV
P-P
.
Enable Input, LVCMOS. Low disables output, high enables output, typically connected to SD.
Supply Ground
Supply Voltage, CML Output (1.8V to V
CC
)
Negative Differential Serial Data Output, CML
Positive Differential Serial Data Output, CML
High-Frequency Power Detector. Leave open for 9.953Gbps to 10.7Gbps PRBS NRZ data.
Low-Frequency Power Detector. Leave open for 9.953Gbps to 10.7Gbps PRBS NRZ data.
Supply Voltage, Equalizer Core, 3.3V
Supply Ground
EP
Exposed
Pad
Ground. The exposed pad must be soldered to the circuit board ground plane for proper thermal and
electrical performance.
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| MAX3805ETE | 功能描述:特定功能邏輯 10.7Gbps Settable Receive EQ RoHS:否 制造商:Texas Instruments 產(chǎn)品: 系列:SN74ABTH18502A 工作電源電壓:5 V 封裝 / 箱體:LQFP-64 封裝:Tube |
| MAX3805ETE#G16 | 功能描述:以太網(wǎng) IC 10.7Gbps Settable Receive EQ RoHS:否 制造商:Micrel 產(chǎn)品:Ethernet Switches 收發(fā)器數(shù)量:2 數(shù)據(jù)速率:10 Mb/s, 100 Mb/s 電源電壓-最大:1.25 V, 3.45 V 電源電壓-最小:1.15 V, 3.15 V 最大工作溫度:+ 85 C 封裝 / 箱體:QFN-64 封裝:Tray |
| MAX3805ETE#TG16 | 功能描述:以太網(wǎng) IC 10.7Gbps Settable Receive EQ RoHS:否 制造商:Micrel 產(chǎn)品:Ethernet Switches 收發(fā)器數(shù)量:2 數(shù)據(jù)速率:10 Mb/s, 100 Mb/s 電源電壓-最大:1.25 V, 3.45 V 電源電壓-最小:1.15 V, 3.15 V 最大工作溫度:+ 85 C 封裝 / 箱體:QFN-64 封裝:Tray |
| MAX3805ETE-T | 功能描述:以太網(wǎng) IC 10.7Gbps Settable Receive EQ RoHS:否 制造商:Micrel 產(chǎn)品:Ethernet Switches 收發(fā)器數(shù)量:2 數(shù)據(jù)速率:10 Mb/s, 100 Mb/s 電源電壓-最大:1.25 V, 3.45 V 電源電壓-最小:1.15 V, 3.15 V 最大工作溫度:+ 85 C 封裝 / 箱體:QFN-64 封裝:Tray |
| MAX3806GTC+ | 功能描述:跨阻抗放大器 Receiver For Optic Distance Measurement RoHS:否 制造商:Texas Instruments 封裝 / 箱體:SOIC-14 帶寬:3 MHz 工作電源電壓:36 V 電源電流:5.5 mA 工作溫度范圍:- 40 C to + 85 C 封裝:Tube |
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