14.2 Gbps Asynchronous
4-Channel Signal Conditioner
Data Sheet
Rev. Sp0 Document Feedback
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FEATURES
Continuous time linear equalizer (CTLE) with up to 18 dB
equalization
Loss of signal (LOS) detection with programmable threshold
and hysteresis
Driver performance
Programmable differential swing: 400 mV p-p differential
to 900 mV p-p differential
Programmable driver output with up to 12 dB de-emphasis
Automatic electrical idle and receiver detection
Output polarity inversion and automatic output squelch
Single supply (2.5 V or 3.3 V)
Low power operation: 80 mW per channel
Per lane power-down options
Flexible configuration interface: pin strap, 2-wire interface,
or EEPROM
APPLICATIONS
QSFP+ direct attach active copper modules
10 Gb, 40 Gb Ethernet and OTN line cards
10 Gb, 40 Gb backplane drivers
8 Gb, 16 Gb Fibre Channel and InfiniBand® EDR line cards
and backplane drivers
8 Gb, 10 Gb, 16 Gb active optical modules
8 Gb, 10 Gb, 16 Gb active copper cable assemblies
1.5 Gb, 3 Gb, 6 Gb, 12 Gb SAS/SATA
PCIe 1.x, 2.0, 3.0
Broadband and automatic test and measurement
GENERAL DESCRIPTION
The HMC7545 is a unidirectional, quad-channel, protocol and
data rate agnostic, asynchronous signal conditioner, designed
for short and intermediate range optical modules, line cards,
and backplane applications operating at up to 14.2 Gbps.
Each channel provides programmable input equalization, LOS
and receiver detection, automatic output squelch,
programmable output swing and output de-emphasis.
All high speed differential inputs and outputs of the HMC7545
are current mode logic (CML), terminated on-chip with 50 Ω to
the positive supply, and can be dc-coupled or ac-coupled.
The device uses a single supply, 2.5 V or 3.5 V, and its typical
power dissipation is less than 80 mW per channel.
The HMC7545 is packaged in a 36-le
ad, 4 mm × 7 mm LFCSP
package and operates from −40°C to +85°C.
FUNCTIONAL BLOCK DIAGRAM
F
igure 1.
For more information about the HMC7545, contact Analog Devices, Inc., at RFMG-HSL@analog.com.
CTLE
VCCI
VCCO
VCCI
LOS
DETECT
Rx
DETECT
LIMITING
AMP
DE-
EMPHASIS
INVERT
2-WIRE
INTERFACE
CONTROL
LOGIC
GND
VCCO
OUT0P
TO
OUT3P
IN0P
TO
IN3P
IN0N
TO
IN3N
RX_EQ1
RX_EQ0
TWI_MST/SLV
TWISEL
SCK
SDA
RESET
SQUELCH
OUT0N
TO
OUT3N
TXDOUT
TX_EQ1
TX_EQ0
EEPROM_DONE
13084-001
