MAX3814CHJ+ Maxim Integrated Products, MAX3814CHJ+ Datasheet - Page 7

• Manufacturer Part Number: MAX3814CHJ+
• Description: IC DRVR/EQUALIZER CABLE 32-TQFP
• Manufacturer: Maxim Integrated Products
• Type: Driverr

Specifications of MAX3814CHJ+

• Number Of Drivers/receivers: 4/0
• Voltage - Supply: 3 V ~ 3.6 V
• Mounting Type: Surface Mount
• Package / Case: 32-TQFP, 32-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Protocol: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

The MAX3814 TMDS equalizer/driver accepts differential
CML input data rates from 250Mbps to 1.65Gbps. It con-
sists of four differential CML input buffers, four indepen-
dent fixed equalizers, four limiting amplifiers, and four
differential CML output buffers (Figure 1). The MAX3814
functions both as an equalizer and as a driver.
As an equalizer the MAX3814 automatically adjusts for
attenuation levels up to 16dB at 825MHz from either
dielectric board losses or skin-effect losses in copper
cable.
Figure 1. Functional Diagram
INC+/-
IND+/-
INA+/-
INB+/-
TERMINATED
TO V
TERMINATED
TO V
TERMINATED
TO V
TERMINATED
TO V
_______________________________________________________________________________________
CC
CC
CC
CC
Detailed Description
EQUALIZER
EQUALIZER
EQUALIZER
EQUALIZER
MAX3814
DVI/HDMI TMDS FR-4 and
AMPLIFIER
AMPLIFIER
AMPLIFIER
AMPLIFIER
LIMITING
LIMITING
LIMITING
LIMITING
As a driver the MAX3814 provides CML outputs. The
CML output is normally open (i.e., no back termination)
and is DC-coupled by transmission line to a termination
at the far end per DVI/HDMI standards. The MAX3814
provides nominally 10mA output-switching currents.
However, with the MAX3814, there is a selectable higher
current drive to accommodate a differential 200Ω back
termination resistor while maintaining the differential
swing of 1000mV
serves to dampen signal reflections returning to the
device from discontinuities in the channel such as DVI or
HDMI connectors, providing a 10dB return loss. See the
CML Inputs and Outputs section for more information.
Cable Equalizer/Driver
OUTPUT LEVEL CONTROL
P-P
LEVEL
DRIVER
DRIVER
DRIVER
DRIVER
. This 200Ω back termination resistor
OUTA+/-
OUTB+/-
OUTC+/-
OUTD+/-
ENABLE
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