High Speed Optocouplers

N EC H I G H S P E E D O P TO C O U P L E R S
N EC HIGH SPEED OPTOCOUPLERS
NEC High Speed Optocouplers offer
best in class performance and reliability
NEC offers a broad range of high speed digital and analog optocouplers with industry-leading performance and reliability. This series of optocouplers provides isolation for various
applications including power supply, motor control and data communications interface
circuits. The primary functions optocouplers serve are signal isolation, noise elimination,
and level conversion.
NEC high speed optocouplers feature guaranteed CMR as high as 15 kV/µsec, output
quiescent current as low as 3 mA, operating temperature to 100° C, speeds to 25 Mbps,
and typical propagation delay as low as 20 ns.
A unique series of NEC’s 15 Mbs optocouplers is the first to offer dual 3.0 / 5.5 Volt operation. These single and dual channel devices provide the flexibility of a low voltage part
that can continue to deliver characteristic specifications as the power supply range of the
design increases.
Engineers tasked with miniaturizing their designs will also appreciate the variety of package styles NEC offers. From the low profile SOP-5 to the single and dual channel SO8, NEC
packaging is designed to address engineers’ space constraints.
Manufacturing is done in NEC’s production facility in Japan where all
processes from initial wafer fabrication to final QA and package marking are fully automated. This allows for higher production rates and
lower manufacturing costs, while assuring the superior quality and
consistency you’ve come to expect from NEC.
NEC optocouplers comply with worldwide safety standards.
Available in single and dual SO8, SOP-5, and 8 pin DIP packages
www.cel.com
N EC HIGH SPEED OPTOCOUPLER APPL I C AT I O N S
R S422/485 Interface Isolation
POWER
RS422/
RS485
X-CEIVER
PWM
www.cel.com
The RS485 serial communications standard is commonly used in data
acquisition applications. The standard supports 32 drivers and receivers in
a 2- or 4-wire differential configuration with cable lengths up to 4000 feet.
Galvanic isolation becomes critical in the prevention of ground loops,
electrical noise, and power spikes in widely distributed systems.
Ke y A p p l i c a t i o n Re q u i re m e n t s
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NEC
NEC
Wide range of data transfer rates: 1 Mbs to 15 Mbs
High Common Mode Rejection Ratio (CMRR)
Compact size
Repeatability
Reliability
Re c o m m e n d e d N E C O p t o c o u p l e r s
DATA
PS8802-1, -2 , PS8821-1, -2 (1 Mbs) PS9121, PS9821-1, -2 (15Mbs)
C AN Interface Isolation
NEC
CONTROLLER
NEC
Controller Area Network (CAN) is a serial communications bus popular in
industrial applications. Point-to-point and multiple systems use it to
coordinate and synchronize events. Isolation is required in these distributed
systems to protect against over-voltage transients, prevent ground loops,
and reduce signal distortion.
CAN
BUS
X-CEIVER
Ke y A p p l i c a t i o n Re q u i re m e n t s
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Accurate signal timing
High Common Mode Rejection Ratio (CMRR)
Compact size
Repeatability
Reliability
Re c o m m e n d e d N E C O p t o c o u p l e r s
PS9661, PS9851-1, -2
USB 1.1 Interface Isolation
NEC
USB
CONTROLLER
NEC
NEC
ISOLATED DC/DC
POWER
EXTERNAL
X-CEIVER
USB is an inexpensive, high speed bus-integration interface used in computer-based systems. While the USB standard does not mandate isolation,
designers recognize its importance in critical systems. Isolation protects
USB interfaces from electrostatic discharge (ESD), ground loops, common
mode noise, and EMI interference.
Ke y A p p l i c a t i o n Re q u i re m e n t s
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High CMRR
Compact Size
Low power consumption
Data Transfer Rates: up to 15 Mbs
Reliability
Re c o m m e n d e d N E C O p t o c o u p l e r s
PS9817, PS9851-1, -2
N EC HIGH SPEED OPTOCOUPLER AP P L I C AT I O N S
www.cel.com
Motor Drive Control Isolation
IGBT
SWITCH
MATRIX
RECTIFIER
FILTER
Motor controllers combine low level logic with high voltage, high power
electronics like Intelligent Power Modules (IPM). Isolation enables communication between the controllers and the drivers at both the high and low
side power modules. Faults and other events are typically transferred across
this isolation barrier as well.
MOTOR
IGBT
DRIVERS
Ke y A p p l i c a t i o n Re q u i re m e n t s
NEC
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NEC
Fast response time: < 0.8 µs
High Common Mode Rejection Ratio (CMRR): >10 kV/µs
Isolation: typically 2500 V AC
Long creepage: up to 8 mm
Re c o m m e n d e d N E C O p t o c o u p l e r s
MICRO
CONTROLLER
PS9213, PS9214, PS9687
Power Supply Isolation
FILTER
Power supplies are used in a wide variety of applications. Galvanic isolation
is required for safety and to allow independent secondary side isolation.
High speed optocouplers are used to transfer gate drive and synchronous
rectification signals from the controller to the switching elements.
RECTIFIER
X-FORMER
Ke y A p p l i c a t i o n Re q u i re m e n t s
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PWM
NEC
NEC
Sync
High temperature: up to 100° C
Fast response time
Low power consumption
Compact size
Repeatability
Re c o m m e n d e d N E C O p t o c o u p l e r s
f /B
PS9817, PS9851-1, -2
802.3af Power over Ethernet (PoE)
DATA + POWER
ROUTER/
SWITCH
CONTROLLER
DATA
PHYSICAL
LAYER
DATA – POWER
POWER
I 2C Bus
NEC
NEC
NEC
802.3af
PSE
CHIP
PoE offers a simple, cost effective, and reliable solution for power transmission. It delivers 13W of power over existing Ethernet cabling in various
applications ranging from industrial IT to home office networks. To ensure
safety for the end user, the 802.3af standard requires 1500 V AC of galvanic
isolation between the main switch circuitry and the Media Dependent Interface (RJ-45 terminal). The communication from the switch to the PSE chip
occurs over an isolated I2C bus.
Ke y A p p l i c a t i o n Re q u i re m e n t s
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3.3 V and 5 V operation
1500 V AC minimum isolation
Small size
Standard Mode (100 kHz data rate)
Fast Mode (400 kHz data rate)
Re c o m m e n d e d N E C O p t o c o u p l e r s
PS8821-1, -2 (Standard Mode)
PS9121, PS9821-1, -2 (Fast Mode)
N EC HIGH SPEED OPTOCOUPLER SELEC T I O N G U I D E
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Headquarters
4590 Patrick Henry Drive
Santa Clara CA 95054
Tel: (408) 919-2500
Fax: (408) 988-0279
www.cel.com
Japan Branch Office
Shibuya-Ku, Tokyo
Tel: 03 3486-1361
CEL Sales Offices
Representatives
About CEL
Santa Clara, CA
(408) 919-2247
Colorado/Utah
Albright Engineering
(303) 877-9524
California Eastern Laboratories is NEC’s
Irvine, CA
(949) 829-8300
Bellevue, WA
(425) 883-9511
Coppell, TX
(972) 745-1880
Olathe, KS
(913) 780-1380
Lakeville, MN
(952) 469-3962
Baltimore, MD
(410) 682-4111
Hackettstown, NJ
(908) 850-7600
Snellville, GA
(770) 978-4443
CTC Office
Wauconda, IL
(847) 487-9906
Illinois/Wisconsin
SCC (847) 781-4010
Indiana/Kentucky
TMC (317) 844-8462
exclusive sales and marketing partner for the
products manufactured by NEC Compound
Semiconductor Devices, Ltd. These include
optocouplers, solid state relays, fiber optic
lasers and detectors, and RF and wireless
Michigan
TMC (586) 731-3016
semiconductors. The company has sales
Ohio
TMC – Cincinnati
(513) 984-6720
maintains extensive inventories, and provides
offices throughout North and South America,
application engineering support.
TMC – Independence
(216) 520-0150
Canada
(Western & Central Ontario)
E-Cubed Components
(905) 791-0812
Canada
(Ottawa & Eastern Ontario)
Brian Turner & Associates
(613) 254-9024
Mexico
VLA Solutions
Zapopan, Jalisco Mexico
011-52-333-836-6319
South America
VLA Solutions
Sao Paulo, Brazil
011-55-115-505-8011
© 2005 California Eastern Laboratories
7.05/5M