DC009A

DC009A demonstration circuit is designed to simplify the evaluation of high-speed operational amplifiers. It includes both an inverting and non-inverting circuit, and pads are provided to allow the use of board-mounted BNC or SMA connectors. The two circuits are independent, with the exception of shared power supply and ground connections. The circuit board is designed to accommodate standard 8- pin miniDIP, single op-amps, such as the LT1190 and LT1220 families. Both voltage and current feedback types can be used. Pins 1, 5, and 8 are outfitted with pads for use in adjusting DC offsets, compensation or, in the case of the LT1223 and LT1190/1/2, for shutting down the amplifier. If a current feedback amplifier such as the LT1223 is being evaluated, omit C3/C6. R4 and R8 are included for impedance matching when driving low impedance lines. If the amplifier is supposed to drive the line directly or if the load impedance is high, R4 and R8 can be replaced by jumpers.