AS1150

Quad LV DS Receivers

Dat a Sh eet

www.austriamicrosystems.com

Revision 1.19

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1 General Description

The AS1150 and AS1151 are quad flow-through LVDS

(low-voltage differential signaling) receivers which

accept LVDS differential inputs and convert them to

LVCMOS outputs. The receivers are perfect for low-

power low-noise applications requiring high signaling

rates and reduced EMI emissions.

The devices are guaranteed to receive data at speeds

up to 500Mbps (250MHz) over controlled impedance

media of approximately 100

Ω. Supported transmission

media are PCB traces, backplanes, and cables.

The AS1150 uses high impedance inputs and requires

an external termination resistor when used in a point-to-

point connection. The AS1151 features integrated paral-

lel termination resistors (nominally 107

Ω), which elimi-

nate the requirement for discrete termination resistors,

and reduce stub lengths.

The integrated failsafe feature sets the output high if the

inputs are open, undriven and terminated, or undriven

and shorted. Enable inputs (EN and ENn – internally

pulled down to GND) control the high-impedance output

and are common to all four receivers. All inputs conform

to the ANSI TIA/EIA- 644 LVDS standards. Flow-through

pinout simplifies PC board layout and reduces crosstalk

by separating the LVDS inputs and LVCMOS outputs.

The devices are available in a 16-pin TSSOP package.

Figure 1. Block Diagrams

2 Key Features

!

Flow-Through Pinout

!

Guaranteed 500Mbps Data Rate

!

300ps Pulse Skew (Max)

!

Conform to ANSI TIA/EIA-644 LVDS Standards

!

Single +3.3V Supply

!

Operating Temperature Range: -40 to +85ºC

!

Failsafe Circuit

!

Integrated Termination (AS1151)

!

16-pin TSSOP Package

3 Applications

The devices are ideal for digital copiers, laser printers,

cellular phone base stations, add/drop muxes, digital

cross-connects, dslams, network switches/routers,

backplane interconnect, clock distribution computers,

intelligent instruments, controllers, critical microproces-

sors and microcontrollers, power monitoring, and porta-

ble/battery-powered equipment.

Rx

107

Ω

Rx

Rx

Rx

AS1151

AS1150

Rx

Rx

Rx

Rx

EN

ENn

IN4-

IN4+

IN3-

IN3+

IN2-

IN2+

IN1-

IN1+

OUT1

OUT2

OUT3

OUT4

EN

ENn

IN4-

IN4+

IN3-

IN3+

IN2-

IN2+

IN1-

IN1+

107

Ω

107

Ω

107

Ω

OUT1

OUT2

OUT3

OUT4