Intersil
Quad, 1MHz, Operational Amplifiers for Commercial, Industrial, and Military Applications
ROHM Semiconductor
SIGNATURE SERIES Operational Amplifiers
ON Semiconductor
Single Supply Quad Operational Amplifiers
STMicroelectronics
LOW POWER QUAD OPERATIONAL AMPLIFIER
Motorola => Freescale
QUAD DIFFERENTIAL INPUT OPERATIONAL AMPLIFIERS
Tiger Electronic
LOW POWER DUAL VOLTAGE COMPARATORS