Optical Isolation Amps sense current in electronic drives.

Press Release Summary:



Supplied in auto-insertable stretched SO-8 package, ACPL-C78x series delivers working insulation voltage to 1,140 V and meets 8 mm creepage and clearance requirements. Products use sigma-delta ADC technology to let designers accurately measure motor phase currents in servo and high-end inverter motor drives. Common-mode rejection (15 kV/µs at VCM = 1,000 V) capability provides precision and stability needed to accurately monitor motor current in high-noise motor control environments.



Original Press Release:



Avago Technologies Announces Industry's Smallest Optical Isolation Amplifiers with 8mm Creepage and Clearance



Competitively Priced Miniature Isolation Amplifiers Extends Working Insulation Voltage to 1140 Volts

CHIBA, CEATEC Japan, September 30, 2008 -- Avago Technologies, a leading supplier of analog interface components for communications, industrial and consumer applications, today announced a new series of competitively priced miniature isolation amplifiers in stretched small outline-8 (stretched SO-8) packages for use in a variety of electronic motor drives used in industrial applications. Avago's new ACPL-C78A/C780/C784 family of isolation amplifiers are designed for current sensing in electronic motor drives and uses advanced sigma-delta A/D converter technology to allow designers to accurately measure motor phase currents in servo and high-end inverter motor drives. Typical applications include inverter current sensing, motor phase and rail current sensing, motor rail voltage sensing, switching power supply signal isolation, industrial A/D converters and general-purpose current sensing and monitoring.

Avago's ACPL-C78A/C780/C784 family of isolation amplifiers come in a new stretched SO-8 package with a footprint that is 30 percent smaller than conventional dual-inline packages (DIP), yet meet 8 mm creepage and clearance requirements. With the addition of the ACPL-C78x series to its existing HCPL-78xx family of isolation amplifiers, Avago can now provide designers with a broader range of amplifiers to meet their design and application needs. As motor drive units increase in sophistication in a compact package, there is an emerging growth in using current sensing devices that are smaller. The introduction of the ACPL-C78x series will expand Avago's current sense product portfolio in this market segment and help motor control designers reduce the printed circuit board (PCB) size required for their designs.

Additionally, the high common-mode rejection (CMR) capability of the ACPL-C78x family provides the precision and stability needed by designers to accurately monitor motor current in high noise motor control environments to provide smoother control - less torque ripple - in their motor control applications. These new stretched packages are compliant to most industrial safety standards such as IEC/EN/DIN EN 60747-5-2, UL 1577 and CSA. Avago offers the ACPL-C78x series in lead-free packages.

Features and Benefits

o High CMR (15 kV/µs at VCM = 1000 V) to ignore high common-mode noise and provide smoother control
o Compact auto-insertable stretched SO-8 package saves PCB space
o 0.00025 V/V/degrees-C very low gain temperature drift provides accurate signal gain over the operating temperature range
o 0.3 mV input offset voltage
o 100 kHz bandwidth
o 0.004 percent nonlinearity provides very linear signal
o Reinforced insulation with worldwide safety approvals:
- IEC/EN/DIN EN 60747-5-2: VIORM = 1140 Vpeak (option 060)
- UL 1577: 5000 Vrms/1 min., for all options
- CSA
o Advanced Sigma-Delta A/D converter technology
o Fully differential amplifier

Pricing and Availability

Pricing for Avago's ACPL-C78A/C780/C784 family of miniature isolation amplifiers begin at $6.00, $4.25, and $3.13 each, respectively in 10,000 piece quantities, and are available now through Avago's direct sales channel and worldwide distribution partners.

Avago Optocoupler and Isolation Solutions

Avago Technologies is the a leading supplier of photo-IC optocouplers and ships hundreds of millions of products annually. The company provides the industry's broadest portfolio of optocouplers for use in a wide array of high voltage isolation applications ranging from power supply and motor control circuits to data communications and digital logic interface circuits. Avago is one of the technology leaders in high speed, low voltage and high integration optocouplers, and offers one of the widest ranges of packages and worldwide safety approvals. Key products include multi-channel and bi-directional digital optocouplers, intelligent power module gate driver interface devices, 3.3 V and 5 V digital optocouplers, 100 Kbaud to 50 MBaud digital logic gate optocouplers, 100 MBd magnetic isolators, gate drive and current sense optocouplers, solid state relays (MOSFET), phototransistors and analog and high-performance hermetic optocouplers. More information is available at http://www.responsetrack.net/lnk/avagotech812591/?14I48000MCM.

About Avago Technologies

Avago Technologies is a leading supplier of analog interface components for communications, industrial and consumer applications. By leveraging its core competencies in III-V compound and silicon semiconductor design and processing, the company provides an extensive range of analog, mixed signal and optoelectronics components and subsystems to more than 40,000 end customers. Backed by strong customer service support, the company's products serve four diverse end markets: industrial and automotive, wired infrastructure, wireless communications, and computer peripherals. Avago has a global employee presence and heritage of technical innovation dating back 40 years to its Hewlett-Packard roots. Information about Avago is available on the Web at http://www.responsetrack.net/lnk/avagotech825963/?14I48000MCM.

Avago, Avago Technologies, and the A logo are trademarks of Avago Technologies. All other trademarks are the property of their respective owners.

Please direct reader inquiries to Avago Technologies at +1 800 235 0312, or e-mail us at support@avagotech.com.

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