參數(shù)資料
型號(hào): HSP50214
廠商: Intersil Corporation
英文描述: Programmable Downconverter
中文描述: 可編程變頻器
文件頁(yè)數(shù): 22/54頁(yè)
文件大?。?/td> 395K
代理商: HSP50214
22
.
TABLE 9. BIT WEIGHTING FOR AGC LOOP FEEDBACK PATH
AGC
ACCUM
BIT
POSITION
GAIN
ERROR
INPUT
GAIN
ERROR
BIT
WEIGHT
AGC LOOP
FILTER GAIN
(MANTISSA)
AGC LOOP
FILTER
GAIN
MULTIPLIER
(OUTPUT)
SHIFT
= 0
SHIFT
= 4
SHIFT
= 8
SHIFT
= 15
AGC
OUTPUT
AND AGC
LIMITS BIT
WEIGHT
AGC GAIN
RESOLUTION
(dB)
31
2
2
2
2
0
30
2
2
2
2
E
3
48
29
2
2
2
2
E
2
24
28
2
2
2
2
E
1
12
27
12
= 2
2
2
2
2
2
E
0
6
26
11
= 1
= 0
.
= 1
1
2
2
2
1
M
-1
3
25
10
0
.
x
0
.
1
2
2
2
0
.
1
M
-2
1.5
24
9
2
2
2
M
-3
0.75
23
8
= 2
x
2
2
2
2
2
M
-4
0.375
22
7
= 3
x
3
2
2
2
3
M
-5
0.1875
21
6
= 4
x
4
2
2
2
4
M
-6
0.09375
20
5
= 5
5
2
2
2
5
M
-7
0.04688
19
4
= 6
6
2
2
1
6
X
-8
0.02344
18
3
= 7
7
2
2
0
.
1
7
-9
0.01172
17
2
= 8
8
2
2
8
-10
0.00586
16
1
= 9
9
2
2
2
9
-11
0.00293
15
0
= 10
10
2
1
3
10
-12
0.00146
14
11
2
0
.
1
4
11
-13
0.000732
13
12
2
5
12
-14
0.000366
12
13
2
2
6
13
-15
0.000183
11
14
1
3
7
14
-16
0.0000916
10
0
.
1
4
8
G
-17
0.0000458
9
5
9
G
-18
0.0000229
8
2
6
10
G
-19
0.0000114
7
3
7
11
G
-20
0.00000572
6
4
8
12
G
-21
0.00000286
5
5
9
13
G
4
6
10
14
G
3
7
11
G
G
2
8
12
G
G
1
9
13
G
G
0
10
14
G
G
AGC Response
Max
= Input(Cart/PolarGain)(Error Det Gain)(AGC Loop Gain
Max
)(AGC Output Weighting).
AGC Response
Max
= (1)(1.64676)(2
-0
)(1)(0.75dB) ~ 1.23dB/symbol time.
AGC Response
Min
= (1)(1.64676)(2
-15
)(1)(0.75dB) ~ 0.00004dB/symbol time.
Thus, the expected range for the AGC rate is ~ 0.00004 to 1.23dB/symbol time.
HSP50214
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