34 × 34, 3.2 Gbps

Asynchronous Digital Crosspoint Switch

Data Sheet

AD8152

Rev. B

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FEATURES

Low cost

Low power: 2.5 V (outputs disabled)

34 × 34, fully differential, nonblocking array

3.2 Gbps per port NRZ data rate

Wide power supply range: 2.5 V to 3.3 V

LVTTL or LVCMOS level control inputs at

2.5 V to 3.3 V

Low channel jitter: 45 ps p-p

Drives a backplane directly

Programmable output swing

100 mV to 1600 mV p-p differential

50 Ω on-chip input/output termination

User controlled voltage at the load

Minimizes power dissipation

Dual rank latches

Available in 256-ball BGA_ED package

APPLICATIONS

Fiber optic network switching

High speed serial backplane routing to OC-48 with FEC

Gigabit ethernet

Digital video (HDTV)

Data storage networks

FUNCTIONAL BLOCK DIAGRAM

OUTPUT

LEVEL

DACs

OUT33N TO

OUT00N

OUT33P TO

OUT00P

VTTO

34

34

MATRIX

CONNECTION

LATCHES

CONNECTION

DECODE

OUTPUT

LEVEL

LATCHES

CONTROL

LOGIC

IN33N TO

IN00N

VTTI

IN33P TO

IN00P

D0 TO D5

A0 TO A6

RE

WE

RESET

CS

UPDATE

VEE

VCC

AD8152

34

34

34 × 34

DIFFERENTIAL

SWITCH MATRIX

Figure 1.

GENERAL DESCRIPTION

The AD8152 is a breakthrough cross point switch offering a

large switch array (34 × 34) on very little power, typically 2.0 W.

Additionally, the device operates at data rates up to 3.2 Gbps per

port, making it suitable for Sonet/SDH OC-48 with forward

error correction (FEC).

The useful supply voltage range of the AD8152 allows the user

to operate at LVPECL/CML data levels down to 2.5 V. The control

interface is low voltage transistor transistor logic (LVTTL) or

low voltage complementary metal-oxide (LVCMOS) compatible on

2.5 V to 3.3 V.

The fully differential signal path of the AD8152 reduces jitter

and crosstalk and allows the use of smaller single-ended voltage

swings. The device is offered in a 256-ball BGA_ED package

that operates over the industrial temperature range of 0°C to

85°C.