Op amps deliver ultra-low noise

Norwood, Mass. — Analog Devices, Inc. (ADI) has introduced the latest addition to its portfolio of low-noise operational amplifiers (op amps). The ADA4898 offers a combination of low distortion, low noise, high speed and high precision, targeting 16-bit and 18-bit precision instrumentation applications.

Designed to work with Analog Devices' precision data converters, including the AD7631 and AD7634, the ADA4898 is well-suited for radar-based collision avoidance, medical instrumentation and other 16-bit and 18-bit precision instrumentation applications.

The ADA4898 unity gain stable op amp offers ultra-low broadband noise (<1 nV/rt Hz), 1/f noise of 1.2 nV/rt Hz at 10 Hz, low distortion (-110 dBc at 500 kHz), and dc precision that optimizes the performance of analog-to-digital converters (ADCs). The op also offers a wide supply range of ± 5 V to ±15 V.

Particularly suited for 16- and 18-bit systems, the ADA4898 features high speed (-3 dB bandwidth of 70 MHz, at G=+1) and high slew rate (40 volts/microsecond), providing the optimal combination of amplifier speed and precision, ADI said. The device operates over the extended temperature range of -40°C to +125°C.

Pricing: $1.89 in quantities of 1,000.
Availability: The ADA4898-1 single is now available in full production quantities in an 8-lead SOIC package. A dual version will be available later this year.
Product information: low-noise op amps

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