hsp50216 Intersil Corporation, hsp50216 Datasheet - Page 57

• Manufacturer Part Number: hsp50216
• Description: Four-channel Programmable Digital Downconverter
• Manufacturer: Intersil Corporation

.
POSITION
ACCUM
AGC
BIT
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
10
11
9
8
7
6
5
4
3
2
1
0
ERROR
INPUT
GAIN
15
14
13
12
10
11
9
8
7
6
5
4
3
2
1
0
WEIGHT
ERROR
GAIN
= 10
= 11
= 12
= 13
BIT
= 0.
= 2
= 1
= 1
= 2
= 3
= 4
= 5
= 6
= 7
= 8
= 9
57
FILTER GAIN
(MANTISSA)
AGC LOOP
TABLE 51. BIT WEIGHTING FOR AGC LOOP FEEDBACK PATH
0.
x
x
x
x
MULTIPLIER
AGC LOOP
(OUTPUT)
FILTER
GAIN
10
11
12
13
14
0.
2
1
1
2
3
4
5
6
7
8
9
HSP50216
SHIFT
AGC LOOP FILTER GAIN
= 0
10
0.
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
1
1
2
3
4
5
6
7
8
9
SHIFT
(EXPONENT)
= 4
10
11
12
13
14
0.
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
1
1
2
3
4
5
6
7
8
9
SHIFT
= 8
10
12
13
14
11
0.
G
G
G
G
2
2
2
2
2
2
2
2
2
2
2
2
1
1
2
3
4
5
6
7
8
9
SHIFT
= 15
10
12
13
14
11
0.
G
G
G
G
G
G
G
G
G
G
G
2
2
2
2
2
1
1
2
3
4
5
6
7
8
9
LIMITS
-10
-12
-11
-1
-2
-3
-4
-5
-6
-7
-8
-9
AGC BIT WEIGHTS
3
2
1
0
SECTION
OUTPUT
TO
M
M
M
M
M
M
M
M
M
M
M
M
M
M
E
E
E
E
0
TO
μP
M
M
M
M
M
M
M
M
M
M
M
E
E
E
E
0
RESOLUTION
0.00000572
0.00000286
AGC GAIN
0.0000916
0.0000458
0.0000229
0.0000114
0.000732
0.000366
0.000183
0.09375
0.04688
0.02344
0.01172
0.00586
0.00293
0.00146
August 17, 2007
0.1875
0.375
(dB)
0.75
1.5
48
24
12
6
3
FN4557.6