HSP50214AVC View Datasheet(PDF) - Intersil
Part Name
Description
MFG CO.
'HSP50214AVC' PDF : 60 Pages View PDF
HSP50214A
.
0
2-1
2-2
2-3
2-4
2-5
2-6
2-7
2-8
2-9
2-10
2-11
2-12
2-13
2-14
0
2-1
2-2
2-3
2-4
2-5
2-6
2-7
2-8
2-9
2-10
2-11
2-12
2-13
2-14
0
2-1
2-2
2-3
2-4
2-5
2-6
2-7
2-8
2-9
2-10
2-11
2-12
2-13
2-14
2-15
2-16
2-17
2-18
2-19
2-20
2-21
2-22
2-23
2-24
2-25
2-26
2-27
2-28
2-29
2-30
2-31
2-32
2-33
2-34
2-35
2-36
2-37
2-38
2-39
0
2-1
2-2
2-3
2-4
2-5
2-6
2-7
2-8
2-9
2-10
2-11
2-12
2-13
2-14
2-15
2-16
2-17
2-18
2-19
2-20
2-21
2-22
2-23
2-24
2-25
2-26
2-27
2-28
2-29
2-30
2-31
2-32
2-33
2-34
2-35
0
2-1
2-2
2-3
2-4
2-5
2-6
2-7
2-8
2-9
2-10
2-11
2-12
2-13
2-14
2-15
2-16
2-17
2-18
2-19
2-20
2-21
2-22
2-23
2-24
2-25
2-26
2-27
2-28
2-29
2-30
2-31
0
2-1
2-2
2-3
2-4
2-5
2-6
2-7
2-8
2-9
2-10
2-11
2-12
2-13
2-14
2-15
2-16
2-17
2-18
2-19
2-20
2-21
2-22
2-23
2-24
2-25
2-26
2-27
2-28
2-29
2-30
2-31
0
2-1
2-2
2-3
2-4
2-5
2-6
2-7
2-8
2-9
2-10
2-11
2-12
2-13
2-14
2-15
2-16
2-17
2-18
2-19
2-20
2-21
2-22
2-23
2-24
2-25
2-26
2-27
2-28
2-29
2-30
2-31
0
2-1
2-2
2-3
2-4
2-5
2-6
2-7
2-8
2-9
2-10
2-11
2-12
2-13
2-14
2-15
2-16
2-17
2-18
2-19
2-20
2-21
2-22
2-23
NOTE: If 14 input bits are not needed, the gain adjust can be in-
creased by one for each bit that the input is shifted down at the
input. For example, if only 12 bits are needed, an offset range of
24dB is possible for a decimation of 24.
FIGURE 16. CIC FILTER BIT WEIGHTING
Since each halfband filter section decimates by 2, the total
decimation through the halfband filter is given by:
DECHB= 2N
(EQ. 9)
where N = Number of Halfband Filters Selected (1 - 5).
HALFBAND
FILTER INPUT
FN = fIN
fIN = fS
HALFBAND FILTER 1 †
CONTROL WORD 7, BIT 15
FN = FHB1
01
FHB1 = fS OR fS/2
†
HALFBAND FILTER 2
CONTROL WORD 7, BIT 16
FN = FHB2
01
FHB2 = FHB1 OR FHB1/2
†
HALFBAND FILTER 3
CONTROL WORD 7, BIT 17
FN = FHB3
01
FHB3 = FHB2 OR FHB2/2
†
HALFBAND FILTER 4
CONTROL WORD 7, BIT 18
FN = FHB4
01
FHB4 = FHB3 OR FHB3/2
†
HALFBAND FILTER 5
CONTROL WORD 7, BIT 19
01
F5 = FHB4 OR FHB4/2
HALFBAND
FILTER OUTPUT
† Each halfband section decimates by 2.
FIGURE 17. BLOCK DIAGRAM OF HALFBAND FILTER
SECTION
16
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