Micrel Semiconductor Inc. (San Jose, CA) announced two tiny rail-to-rail, dual-operational amplifiers that consume one-tenth the power of comparable devices for use in cell phones, PDAs, MP3 players and other portable equipment, the MIC862 and MIC863. Both op amps operate from a 5V to 2V power supply; are unity-gain stable; and are specified at supply voltages of 2V, 2.7V and 5V. Input offset voltage is 0.1mV (typical), large signal-voltage gain is 96dB, PSRR is 92dB and CMRR is 87dB.
The MIC862 dual op amp provides a -3dB bandwidth of 5MHz and a gain-bandwidth product of 3MHz, yet consumes only 31µA of current per channel. For applications that require lower power consumption, the MIC863 dual op amp operates at 4.2µA per channel, while still providing a comfortable -3dB bandwidth of 800kHz and a gain-bandwidth product of 450kHz.
The MIC862 and MIC863 in SOT23-8 packaging are priced at $1.25 each in 1,000-piece quantities. Samples are available immediately, and production quantities are available in eight weeks ARO.
