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New Precision Operational Amplifier Unveiled by Analog Devices

Wed, 07/20/2011 - 7:03am
Analog Devices, Inc. (ADI) introduced the ADA4096-2 dual, precision-micropower operational amplifier (op amp) -- the industry’s first precision op amp with more than ±30 V of integrated input over-voltage protection (OVP). This industry-leading level of internal input OVP, which extends 32 V above and below the supply rails, means that analog designers using the ADA4096-2 can eliminate or minimize their external OVP solutions to save product development time, component cost and board space. The ADA4096-2 improves overall system accuracy and eases error budgeting and analysis by eliminating the uncontrolled and poorly specified error sources associated with external input OVP components while delivering a higher level of over-voltage protection in a robust single-chip design.

The ADA4096-2 draws only 60 uA of power per amplifier and features twice the bandwidth and half the voltage noise of its competitors. This makes it a good choice for analog engineers designing industrial sensors and other applications needing precision signal handling, high accuracy and ultra-low power consumption such as process controls, high density or loop-powered industrial instrumentation and battery-powered medical devices where voltage levels can drop or spike quickly.

• Download data sheet and order samples: www.analog.com/ADA4096-2
• Order evaluation boards: www.analog.com/ADA4096-2
• Get support at ADI’s EngineerZone: http://ez.analog.com/community/amplifiers
• Find other featured products and resources for process control and industrial automation applications: http://processcontrol.analog.com/en/segment/pcia.html

Since op amps can be damaged if the signal they are monitoring is live when its power supplies are not available, the ADA4096-2’s input OVP was designed to remain active even when power is not applied. This feature protects the inputs even during power on/power off sequencing and in low power sleep and standby modes of operation and helps ensure continuous operation of the entire electronic system.

The unique design of the ADA4096-2 allows it to achieve 800 kHz of unity gain bandwidth. Combined with a low typical 35 uV of offset voltage and 1 uV/°C typical of temperature drift, the new op amp provides designers with higher dc precision over temperature, reducing the need to calibrate to achieve high accuracy measurements. With a low voltage noise of 27 nV/vHz, the ADA4096-2 improves accuracy under all operating conditions. The ADA4096-2 is fully specified to operate from a 3-V to 30-V single-voltage supply over the extended industrial temperature range (-40°C to +125°C).

ADA4096-2 Dual Precision, Micropower, Operational Amplifier with Input OVP

• Rail-to-Rail Input and Output Swing
• Micropower: 60 µA/Amplifier
• Unity Gain Bandwidth: 800 kHz @ Vsy = 30V, 550 kHz @ 10V, 475 kHz @ 3.0V
• Low Offset Voltage: 250 µV max
• High Open-Loop Gain: 125 dB typ
• Unity-Gain Stable
• No Phase Reversal

For more information please visit, http://www.analog.com

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