Analog Devices Adds New ADA4841 Op Amps

Analog Devices Inc. (ADI, Wilmington, MA) extended its portfolio of general-purpose operational amplifiers (op amps) with the ADA4841 family of single and dual devices. Offering low noise and distortion and drawing 1.1 mA of supply current, the new op amps are well suited for power-sensitive applications such as portable instrumentation, high-channel-count measurement, and medical applications.

The ADA4841-x family achieve a 2 nV/rt Hz wideband voltage noise and 1.4 pA/rt-Hz wideband current noise. To maintain a low noise environment at lower frequencies, the amplifiers have a low 1/f noise of 6 nV/rt-Hz and 13 pA/rt-Hz at 10 Hz. The amplifiers have low distortion, with 111 dBc spurious free dynamic range at 100 kHz. The ADA4841-x family has rail-to-rail outputs that allow a signal swing within 100 mV of either supply rail, maximizing the linear range for power supplies from 2.7 V to 12 V. On the input, the common-mode voltage range extends down to the negative supply. In addition, the amplifiers offer dc precision with 500 µV maximum offset voltage.

The ADA4841-1 is available now in six-pin SOT-23 and eight-pin SOIC packages, and is priced at $1.59 per unit in 1,000-piece quantities. The ADA4841-2 is sampling now with production quantities available in September 2005. It is offered in eight-pin SOIC and eight-pin MSOP packages and is priced at $2.29 per unit in 1,000-piece quantities. Both devices are offered over the extended industrial temperature range of -40 °C to +125 °C).