austriamicrosystems
www.DataSheet4U.com
AS1150, AS1151
Quad LVDS Receivers
Data Sheet
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 100Ω. 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 107Ω), 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
VCC
IN1+
IN1-
Rx
OUT1
IN2+
IN2-
Rx
OUT2
IN3+
IN3-
Rx
OUT3
IN4+
IN4-
EN
Rx
OUT4
ENn AS1150
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.
VCC
IN1+
IN1-
107Ω
Rx
IN2+
IN2-
107Ω
Rx
IN3+
IN3-
107Ω
Rx
IN4+
IN4-
EN
107Ω
Rx
ENn AS1151
OUT1
OUT2
OUT3
OUT4
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