TMC2249A

Features:

• 60 MHz input and computation rate
• Two 12-bit multipliers
• Separate data and coefficient inputs
• Independent, user-selectable pipeline delays of 1 to 16  clocks on all input ports
• Separate 16-bit input port allows cascading or addition of  a constant
• User-selectable rounded output
• Internal 1/2 LSB rounding of products
• Fully registered, pipelined architecture
• Available in 120-Pin CPGA, PPGA, MPGA or MQFP


Application

• Video switching
• Image mixing
• Digital signal modulation
• Complex frequency synthesis
• Digital filtering
• Complex arithmetic functions


Pinout

Specifications

Parameter	Min	Max	Unit
Supply Voltage	-0.5	7.0	V
Input Voltage	-0.5	VDD + 0.5	V
Applied Voltage (Output) 2	-0.5	VDD + 0.5	V
Externally Forced Current (Output) 3,4	-3.0	6.0	mA
Output Short Circuit Duration (single output in HIGH state to ground)		1	sec
Operating, Ambient Temperature	-20	110	°C
Operating,Junction Temperature		140	°C
Storage Temperature	-65	150	°C
Lead, Soldering (10 seconds)		150	°C

Description

The TMC2249A is a high-speed digital arithmetic circuit  consisting of two 12-bit multipliers, an adder and a cascade- able accumulator. All four multiplier inputs are simulta- neously accessible to the user, and each includes a user- programmable pipeline delay of up to 16 clocks in length.  The 24-bit adder/subtractor is followed by an accumulator  and 16-bit input port which allows the user to cascade multi- ple TMC2249As. A new 16-bit accumulated output is avail-able every clock, up to the maximum rate of 60 MHz. All  nputs and outputs are registered except the three-state out- put enable, and all are TTL compatible.