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PDF ( 数据手册 , 数据表 ) EQCO31R20.3

零件编号 EQCO31R20.3
描述 3.125 Gbps Asymmetric Coax Equalizer
制造商 Microchip
LOGO Microchip LOGO 


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EQCO31R20.3 数据手册, 描述, 功能
EQCO62R20.3/EQCO31R20.3
EQCO62R20.3 6.25 Gbps Asymmetric Coax Equalizer/
EQCO31R20.3 3.125 Gbps Asymmetric Coax Equalizer
Features
• Complies with the CoaXPress v1.1 camera
standard (1)
• Supports up to 68 meters of cable at 6.25 Gbps
using high-quality coax
• Supports up to 212 meters of cable at 1.25 Gbps
using high-quality coax
• Single-chip solutions for both the camera side and
the frame grabber side, making a bidirectional
connection over a single 75coax cable
• Full-Duplex, bidirectional data channel
- Downlink speeds from 1.25 Gbps up to 6.25
Gbps; differential interfacing straightforward
with internal termination resistors
- Uplink supporting 21 Mbps, allowing
nanoseconds precise triggering events driven
by the frame grabber
• Supports power distribution over the coax up to
900 mA, powering the camera through the same
coax transporting data signals
• Low power consumption (<70 mW, 1.2V supply)
• 16-Pin, 0.65 mm pin pitch, 4 mm QFN package
• Small PCB footprint for EQCO62R20 and off-chip
components, with guaranteed RF-performance
• -40°C to +85°C industrial temperature range
• Pb-free and RoHS compliant
Applications
• High-definition/high-bandwidth links to cameras
• Machine vision for semiconductor chips and
display panel inspection systems
• Military, aerospace, medical applications
• Broadcast and surveillance camera systems
• Traffic license plate and monitoring systems
• High-Speed inspection systems for food Inspection,
bottling inspection, panel inspection, etc.
• Any application requiring a single coax cable
which carries power, video data and camera
control stream.
Introduction
The EQCO62T/R20(2) chipset is a driver/equalizer
chipset that forms a bidirectional, full-duplex
communication link over a single coax cable.
The EQCO62T/R20 chipset is designed to transport up
to 6.25 Gbps over the downlink channel and to trans-
port 21 Mbps over the uplink channel. The
EQCO62T20 is designed to transmit the downlink sig-
nal at up to 6.25 Gbps and receive the uplink signal.
The EQCO62R20 is designed to receive the downlink
signal at up to 6.25 Gbps and to transmit the uplink sig-
nal. Power can be transferred over the same cable via
external inductors.
The chipset is designed to work with several types of
75coaxial cables, including legacy cables as well as
thin, flexible lightweight cables.
Note 1: CoaXPress V1.1 standard. Free down-
load from the JIIA website:
http://jiia.org/en/standardization/list/
2: The EQCO31T20 and EQCO31R20 are
lower-speed versions of the EQCO62T20
and EQCO62R20, with a maximum bit
rate of 3.125 Gbps for the high-speed
downlink and the same uplink speed.
2012-2016 Microchip Technology Inc.
DS60001302B-page 1







EQCO31R20.3 pdf, 数据表
EQCO62R20.3/EQCO31R20.3
FIGURE 1-4:
PRINCIPLE OF EQUALIZER OPERATION
1.2.3 EQUALIZER CORE
The EQCO62R20 has an embedded equalizer in the
receive path with the following characteristics:
• Auto-Adaptive
The equalizer controls a multiple-pole analog filter
which compensates for attenuation of the cable, as
illustrated in Figure 1-4. The filter frequency response
needed to restore the signal is automatically determined
by the device using a time-continuous feedback loop
that measures the frequency components in the signal.
Upon the detection of a valid signal, the control loop
converges within a few microseconds.
• Variable Gain
The EQCO62R20 equalizer has variable gain to
compensate for low-frequency attenuation through the
coax and variations in transmit amplitude.
• Multi-Speed
The EQCO62R20 works at data rates from 1.25 Gbps
to 6.25 Gbps with 8B/10B coding.
Example equalizer performance measurements can be
found in Figure .
1.2.4 RX OUTPUT DRIVER
The output driver converts the output of the equalizer
core to a LVDS-like signal and sends it onto a 100
differential transmission line.
DS60001302B-page 8
2012-2016 Microchip Technology Inc.







EQCO31R20.3 equivalent, schematic
EQCO62R20.3/EQCO31R20.3
3.0 ELECTRICAL CHARACTERISTICS
3.1 Absolute Maximum Ratings
Stresses beyond those listed under this section may
cause permanent damage to the device. These are stress
ratings only and are not tested. Functional operation of
the device at these or any other conditions beyond those
indicated in the operational sections is not implied.
Exposure to absolute maximum rating conditions for
extended periods may affect device reliability.
TABLE 3-1: ABSOLUTE MAXIMUM RATINGS
Parameter
Conditions
Storage Temperature
Ambient Temperature
Power Applied
Operating Temperature
Normal Operation
(VCC = 1.2V ±5%)
Supply Voltage to Ground
DC Input Voltage
DC Voltage to Outputs
Current into Outputs
Outputs Low
Min.
-65
-55
-40
-0.5
-0.5
-0.5
Typ.
Max.
+150
+125
+85
+1.4
+1.6
+1.6
90
Units
°C
°C
°C
V
V
V
mA
TABLE 3-2:
ELECTRICAL CHARACTERISTICS (OVER THE OPERATING VCC AND -40 TO +85°C
RANGE)
Parameter
Description
Min.
Typ.
Max.
Unit
Power Supply
VCC
Supply Voltage
IS Supply Current, both Transmitting and Receiving
Isr Supply Current when only Receiving
LFI Input (LVTTL-Like)
Vih Input High Voltage
Vil Input Low Voltage
Rinput
Resistance to GND
SDIp Connection to Coax
Zcoax
RSDIP
VLF
Coax Cable Characteristic Impedance
Input Impedance between SDOp and VCC/GND
Coax Return Loss as Seen on SDOp pin
Frequency Range = 5 MHz-1 GHz
trise_lf
Coax Return Loss as Seen on SDOp pin
Frequency Range = 1 GHz-1.5 GHz
RLloss
Coax Return-Loss as Seen on SDIp pin
Frequency Range = 5 MHz-1 GHz
RLloss
Coax Return-Loss as Seen on SDIp pin
Frequency Range = 1 GHz-1.5 GHz
RLloss
Coax Return-Loss as Seen on SDIp pin
Frequency Range = 1.5 GHz-3.2 GHz
VTX Transmit Amplitude for Downlink Signal
1.15
-0.5
500
1.2
60
50
1.2
GND
3.6
75
75
600
1.25
1.6
-15
-10
-15
-10
-7
700
V
mA
mA
V
V
k
dB
dB
dB
dB
dB
mV
DS60001302B-page 16
2012-2016 Microchip Technology Inc.










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