AD8153 Datasheet, PDF (1/18 Pages) Analog Devices – Single Buffered Switch 3.2 Gbps

Preliminary Technical Data
FEATURES
Single lane 2:1 mux/1:2 demux
3.2 Gbps to DC data rates
Compensates over 40 inches of FR4 at 3.2 Gbps through
Two levels of input equalization, or
Four levels of output pre-emphasis
Accepts ac- or dc-coupled differential inputs
Low deterministic jitter, typically 20 ps p-p
Low random jitter, typically 1 ps RMS
BER < 10^-16
On-chip terminations
Unicast or bicast on 1:2 demux function
Loopback capability on all ports
3.3 V core supply
Flexible I/O supply
Low power, typically 200 mW in basic configuration¹
32-lead QFN package
−40°C to +85°C operating temperature range
APPLICATIONS
Low cost redundancy switch
SONET OC48/SDH16 and lower data rates
Gigabit Ethernet over backplane
Fibre channel 1.06 Gbps and 2.12 Gbps over backplane
Serial RapidIO
PCI Express
Infiniband over backplane
3.2 Gbps
Single Buffered Switch
AD8153
Input A
Input B
Output A
Output B
Receive
Equalization
EQ
2:1
EQ
1:2
Transmit
Pre-
Emphasis
Output C
Receive
Equalization
EQ
Input C
Transmit
Pre-
Emphasis
2:1 Multiplexer/
1:2 Demultiplexer
Control
Logic
SEL
BICAST
LB_A
LB_B
LB_C
SER/PARB
RESETB
EQ_A/I2C_SCL
EQ_B/I2C_SDA
EQ_C
PE_A/I2C_ADDR0
PE_B/I2C_ADDR1
PE_C/I2C_ADDR2
GENERAL DESCRIPTION
The AD8153 is an asynchronous, protocol agnostic, single-lane
2:1 switch with three differential PECL/CML-compatible inputs
and three differential CML outputs. The AD8159, another
member of the Xstream^TM line of products, is suitable for similar
applications that require more than one lane.
The AD8153 is optimized for NRZ signaling with data rates of
up to 3.2 Gbps per port. Each port offers two levels of input
equalization and four levels of output pre-emphasis.
The device consists of a 2:1 multiplexer and a 1:2 demultiplexer.
There are three operating modes: pin mode, serial mode, and
mixed mode. In pin mode, switching and equalization/pre-
emphasis are controlled exclusively using external pins. In
serial mode, an I²C interface is used exclusively to control the
device, and to provide access to advanced features, such as
additional pre-emphasis settings and output disable. In the
mixed mode mode, the user accesses the advanced features
using I²C, but controls device switching using the external pins.
The main application of the AD8153 is to support redundancy
on both the backplane side and the line interface side of a serial
link. The device has unicast and bicast capability, so it is capable
of supporting either 1 + 1 or 1:1 redundancy.
Another application for AD8153 is testing high speed serial
links by duplicating incoming data and sending it to the
destination port and to test equipment simultaneously.
Rev. PrA
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