[Silicon Systems, Inc.]

DESCRIPTION
The SSI 32F8030 Programmable Electronic Filter provides an electronically controlled low–pass filter with a separate differentiated low–pass output. A seven–pole, 0.05° Equiripple-type linear phase, low–pass filter is provided along with a single-pole, single-zero differentiator. Both outputs have matched delays. The delay matching is unaffected by any amount of programmed high frequency peaking (boost) or bandwidth. This programability, combined with low group delay variation makes the SSI 32F8030 ideal for use in many applications. Double differentiation high frequency boost is accomplished by a two–pole, low–pass with a two–pole, high–pass feed forward section to provide complementary real axis zeros. A variable attenuator is used to program the zero locations, which controls the amount of boost.

FEATURES
• Ideal for:
   - constant density recording applications
   - magnetic tape recording
• Programmable filter cutoff frequency
   (ƒc = 250 kHz to 2.5 MHz)
• Programmable high frequency peaking
   (0 to 9 dB boost at the filter cutoff frequency)
• Matched normal and differentiated low-pass
   outputs
• Differential filter input and outputs
• ±3.0% group delay variation from
   0.2 ƒc to 1.75 ƒc, 0.25 MHz ≤ ƒc ≤ 2.5 MHz
• Total harmonic distortion less than 1%
• +5V only operation
• 16-Lead SON, and SOL packages
• 5 mW idle mode