LF3310

Storage temperature ...................................................................65 to +150
Operating ambient temperature ..................................................55 to +125
VCC supply voltage with respect to ground .................................0.5 V to +4.5 V
Input signal with respect to ground ............................................... 0.5 V to 5.5 V
Signal applied to high impedance output ........................................0.5 V to 5.5 V
Output current into low outputs ..................................................................  25 mA
Latchup current .........................................................................................> 400 mA
ESD Classification (MIL-STD-883E METHOD 3015.7) ......................................Class 3

The LF3310 is a two-dimensional digital image filter capable of filtering data at real-time video rates. The device
contains both a horizontal and a vertical filter which may be cascaded or used concurrently for two-dimensional
filtering. The input, coefficient, and output data are all 12-bits and in two's complement format.

The LF3310 is designed to take advantage of symmetric coefficient sets. When symmetric coefficient sets are
used, the horizontal filter can be configured as a 16-tap FIR filter. When asymmetric coefficient sets are used, it
can be configured as an 8-tap FIR filter. The vertical filter is an 8-tap FIR filter with all required line buffers contained
on-chip. The line buffers can store video lines with lengths from 4 to 3076 pixels.

Horizontal filter Interleave/Decimation Registers (I/D Registers) and the vertical filter line buffers allow interleaved data to be fed directly into the device and filtered without separating the data into individual data streams. The horizontal filter can handle a maximum of sixteen data sets interleaved together. The vertical filter can handle interleaved video lines which contain 3076 or less data values. The I/D Registers and horizontal accumulator facilitate
using decimation to increase the number of filter taps in the horizontal filter. Decimation of up to 16:1 is supported.

The LF3310 has on-chip storage for 256 horizontal coefficient sets and 256 vertical coefficient sets. Each filter's
coefficients are loaded independently of each other allowing one filter's coefficients to be updated without
affecting the other filter's coefficients. In addition, a horizontal or vertical coefficient set can be updated independently from the other coefficient sets in the same filter.