DESCRIPTION

The LMS12 is a high-speed 12 x 12-bit combinatorial multiplier integrated with a 26-bit adder in a single 84-pin package. It is an ideal building block for the implementation of very highspeed FIR filters for video, RADAR, and other similar applications. The LMS12 implements the general form (A•B) + C. As a result, it is also useful in implementing polynomial approximations to transcendental functions.

FEATURES

❑ 12 x 12-bit Multiplier with Pipelined 26-bit Output Summer

❑ Summer has 26-bit Input Port Fully Independent from Multiplier Inputs

❑ Cascadable to Form Video Rate FIR Filter with 3-bit Headroom

❑ A, B, and C Input Registers Separately Enabled for Maximum Flexibility

❑ 28 MHz Data Rate for FIR Filtering Applications

❑ High Speed, Low Power CMOS Technology

❑ 84-pin PLCC, J-Lead