Quad amp claims new noise lows

Edited by the Electronicstalk editorial team May 19, 2005

The industry's lowest-noise quad bipolar precision amplifier satisfies the demanding requirements of multichannel systems that operate from +/-18V power supplies.

Analog Devices has released the industry's lowest-noise quad bipolar precision amplifier for the demanding requirements of multichannel data acquisition, analytical instruments, automated test equipment and other industrial and medical systems that operate from +/-18V power supplies.

The ADA4004-4 amp is manufactured on ADI's new iPolar trench isolation process technology, which enables the device to reduce power consumption by 50% compared with competing devices while fitting into a chip-scale package that is up to 70% smaller.

The combination of reduced power and size allows the ADA4004-4 to maintain excellent dynamic range without the cooling fans or heatsinks required by other quad low-noise amps, making it ideal for applications that demand high-voltage precision performance at extended industrial temperature ranges.

"The low noise and power levels achieved by the ADA4004-4 quad precision amplifier make this device uniquely equipped to address the performance requirements of high-voltage equipment in demanding industrial environments", said Steve Sockolov, Product Line Director, Precision Amplifier Group, Analog Devices.

"Even as this new amp drives better overall performance, its use of smaller packaging technology allows industrial OEM designers to shrink board space to reduce cost and improve layout flexibility".

The ADA4004-4 achieves voltage noise of 2nV/(rt)Hz while consuming just 1.7mA of supply current per amplifier.

Despite the much smaller chip-scale package, the lower power consumption enables the part to operate over the extended industrial temperature range of -40 to +125C without derating.

The ADA4004-4 also features low drift and high open loop gain, resulting in high accuracy when designed into high-voltage systems like precision, low-noise medical equipment.

Other applications include industrial sensors, control loops in precision power supplies and video units, and PLL (phase-locked loop) filters and filter blocks in one- and two-way communication and data transmission systems.

The ADA4004-4 is currently sampling and will be available in production quantities in October.

The device is available in a 4 x 4mm 16-lead LFCSP (lead-frame chip-scale package) and a 14-lead narrow SOIC package.

Pricing is $3.04 per unit in 1000-piece quantities.