HSP50214BVI Intersil, HSP50214BVI Datasheet - Page 17

• Manufacturer Part Number: HSP50214BVI
• Manufacturer: Intersil

Specifications of HSP50214BVI

• Lead Free Status / RoHS Status: Not Compliant

NOTE: If 14 input bits are not needed, the gain adjust can be in-
Since each halfband filter section decimates by 2, the total
decimation through the halfband filter is given by:
where N = Number of Halfband Filters Selected (1 - 5).
DEC
HB
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.
=
0
2
2
2
2
2
2
2
2
2
2
2
2
2
2
-1
-2
-3
-4
-5
-6
-7
-8
-9
-10
-11
-12
-13
-14
2
FIGURE 16. CIC FILTER BIT WEIGHTING
N
0
2
2
2
2
2
2
2
2
2
2
2
2
2
2
-1
-2
-3
-4
-5
-6
-7
-8
-9
-10
-11
-12
-13
-14
0
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
-32
-33
-34
-35
-36
-37
-38
-39
-1
-2
-3
-4
-5
-6
-7
-8
-9
-10
-11
-12
-13
-14
-15
-16
-17
-18
-19
-20
-21
-22
-23
-24
-25
-26
-27
-28
-29
-30
-31
2
2
2
2
0
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
-32
-33
-34
-35
-1
-2
-3
-4
-5
-6
-7
-8
-9
-10
-11
-12
-13
-14
-15
-16
-17
-18
-19
-20
-21
-22
-23
-24
-25
-26
-27
-28
-29
-30
-31
17
0
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
-1
-2
-3
-18
-19
-20
-21
-22
-23
-24
-25
-26
-27
-28
-29
-30
-31
-4
-5
-6
-7
-8
-9
-10
-11
-12
-13
-14
-15
-16
-17
0
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
-1
-2
-3
-4
-5
-6
-7
-8
-9
-10
-11
-12
-13
-14
-15
-16
-17
-18
-19
-20
-21
-22
-23
-24
-25
-26
-27
-28
-29
-30
-31
0
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
-1
-2
-3
-18
-19
-20
-21
-22
-23
-24
-25
-26
-27
-28
-29
-30
-31
-4
-5
-6
-7
-8
-9
-10
-11
-12
-13
-14
-15
-16
-17
0
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
-1
-2
-3
-4
-5
-6
-7
-8
-9
-10
-11
-12
-13
-14
-15
-16
-17
-18
-19
-20
-21
-22
-23
(EQ. 9)
HSP50214B
CONTROL WORD 7, BIT 19
†
FIGURE 17. BLOCK DIAGRAM OF HALFBAND FILTER
Each halfband section decimates by 2.
CONTROL WORD 7, BIT 18
F
N
CONTROL WORD 7, BIT 17
F
= F
N
FILTER INPUT
= F
CONTROL WORD 7, BIT 16
F
HB4
HALFBAND
N
CONTROL WORD 7, BIT 15
F
HB3
= F
N
= F
HB2
SECTION
HB1
F
N
= f
S
0
HALFBAND FILTER 5
0
F
1
5
HALFBAND FILTER 4
= F
0
1
F
HB4
HALFBAND FILTER 3
HB4
0
F
1
HALFBAND FILTER 2
HB3
= F
0
OR F
1
F
HALFBAND FILTER 1
HB2
HALFBAND
FILTER OUTPUT
HB3
= F
1
F
HB4
HB1
HB2
= F
OR F
HB1
/2
= f
OR F
HB3
f
†
IN
S
OR F
OR f
May 1, 2007
= f
HB2
/2
†
FN4450.4
S
†
HB1
S
/2
/2
†
/2
†