World's Leading Supplier of Amplifiers Delivers Industry's First Difference Amplifier for 42 V Automotive Systems
NORWOOD, Mass.--June 23, 2003---Device provides widest voltage range, compatible for both 14- and
42V automotive electro-mechanical systems.
Analog Devices Inc. , the world's leading supplier of amplifiers, today unveiled the industry's first difference amplifier suited for 42 V automotive systems. Responding to the demand for high-performance current sensing solutions as the automotive industry begins the migration to 42 V electrical systems, Analog Devices has developed an easy-to-use difference amplifier with a wide input common mode voltage range and the ability to eliminate error sources commonly associated with current sensing in electro-mechanical systems. Leveraging the company's years of experience supplying amplifiers to the automotive industry, ADI has developed a device that is compatible with both next-generation 42 V systems, as well as today's 14 V and 24 V automotive systems, providing automotive designers with an easy upgrade path.
Amplifiers, which are the primary building blocks in every analog circuit, are ubiquitous in today's vehicles that use electro-mechanical systems to operate myriad functions, from power steering and braking systems to fuel injection and transmission control. The new amplifier, the AD8205, is a high-side current sensing solution critical to the solenoid and motor control circuits that reside within automotive systems, such as the transmission, brakes, suspension, steering, water pumps and wipers. Replacing mechanical systems with electro-mechanical systems is making cars lighter, more fuel efficient and higher performing. In addition, devices like the AD8205 help electro-mechanical systems reduce emissions by delivering more accurate system control and efficiencies.
"Analog Devices is addressing one of the biggest technological challenges in the history of the automotive electronics industry-the evolution to 42 V architectures," said Jay Cormier, product line director for the Industrial Instrumentation and Automotive Group, Analog Devices. "By providing a precision, high-performance current sensing solution for the control of electro-mechanical systems with a built-in ability to upgrade to the 42 V system, automobile manufacturers will be able to capitalize on the benefits today, as well as plan for the vehicles they will be building tomorrow."
About the AD8205
The AD8205 is a high-performance, single-supply difference amplifier with a wide input common mode voltage (CMV) operational range of -2 V to 65 V, which allows the chip to measure small differential voltages--such as across a shunt resistor--in the presence of high voltages (large CMV). Additionally, the device can survive over an input CMV range of -5 V to 70 V. The part's ability to reject high, common mode voltages while measuring small differential voltages eliminates error sources commonly associated with current sensing in electro-mechanical systems.
The AD8205 also is well suited for industrial applications that measure small differential voltages in the presence of high CMV. Many industrial current sensing applications, such as hydraulic systems and motor control, already require this extended CMV range.
Excellent dc performance over temperature keeps errors in the measurement loop to a minimum. Offset drift is less than 20 microV/degrees C, and gain drift is below 30 ppm/degrees C (up to 125 degrees C). The AD8205 also has very high common-mode rejection of 80 dB, which extends from dc up to 100 kHz.
Pricing and Availability
The AD8205 is sampling in an 8-pin SOIC (small outline integrated circuit) package and is specified over the extended temperature range of -40 degrees C to +125 degrees C. The AD8205 is also available in die form, with an extended temperature range of -40 degrees C to 150 degrees for use in higher temperature applications. The part is priced at $0.95 per unit in one-million-piece quantities. For more information, please visit www.analog.com/AD8205.
About Analog Devices
Analog Devices is a leading manufacturer of precision high-performance integrated circuits used in analog and digital signal processing applications. The company is headquartered in Norwood, Massachusetts, and employs approximately 8,600 people worldwide. It has manufacturing facilities in Massachusetts, California, North Carolina, Ireland, the Philippines and the United Kingdom. Analog Devices' stock is listed on the New York Stock Exchange and the company is included in the S&P 500 Index.