SSI32F8030 Datasheet, PDF (1/10 Pages) List of Unclassifed Manufacturers – Programmable Electronic Filter

®
A TDK Group Company
SSI 32F8030
Programmable
Electronic Filter
DESCRIPTION
The SSI 32F8030 Programmable Electronic Filter pro-
vides 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 pro-
grammed high frequency peaking (boost) or band-
width. This programability, combined with low group
delay variation makes the SSI 32F8030 ideal for use in
many applications. Double differentiation high fre-
quency 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.
The SSI 32F8030 programmable boost and bandwidth
characteristics can be controlled by external DACs or
DACs provided in the SSI 32D4661 Time Base Gen-
erator. Fixed characteristics are easily accomplished
with three external resistors. In addition, boost can be
switched in or out by a logic signal.
The SSI 32F8030 requires only a +5V supply and is
available in 16-Lead SON, and SOL packages.
April 1995
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
BLOCK DIAGRAM
PIN DIAGRAM
VIN+
VIN-
Low Pass
Filter
Summer
High Pass
Filter
Variable
Atten.
VBP
IFP
VFP
FBST
Filter
Control
GND1 GND2 VCC1 VCC2
04/14/95 - rev.
Low Pass
Filter
High Pass
Filter
VREF
VO_NORM+
VO_NORM-
VO_DIFF+
VO_DIFF-
VR
GND1 1
VO_NORM- 2
VO_NORM+ 3
VCC1 4
VIN- 5
VIN+ 6
VBP 7
FBST 8
16 VO_DIFF+
15 VO_DIFF-
14 PWRON
13 VR
12 VCC2
11 IFP
10 VFP
9 GND2
BIAS
PWRON
CAUTION: Use handling procedures necessary
for a static sensitive component.
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