HSP50214BVI 데이터 시트보기 (PDF) - Intersil
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HSP50214BVI Datasheet PDF : 62 Pages
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HSP50214B
.
TABLE 9A. 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
31
2
2
2
2
0
30
2
2
2
2E3
29
2
2
2
2E2
28
2
2
2
2E1
27
12
=2
2
2
2
2
2E0
26
11
=1
1
2
2
2
1 M -1
25
10
= 0.
0.
0.
2
2
2
0. M -2
24
9
=1
x
1
2
2
2
1 M -3
23
8
=2
x
2
2
2
2
2 M -4
22
7
=3
x
3
2
2
2
3 M -5
21
6
=4
x
4
2
2
2
4 M -6
20
5
=5
5
2
2
2
5 M -7
19
4
=6
6
2
2
1
6 X -8
18
3
=7
7
2
2
0.
7
-9
17
2
=8
8
2
2
1
8
-10
16
1
=9
9
2
2
2
9
-11
15
0
= 10
10
2
1
3
10
-12
14
11
2
0.
4
11
-13
13
12
2
1
5
12
-14
12
13
2
2
6
13
-15
11
14
1
3
7
14
-16
10
0.
4
8
G
-17
9
1
5
9
G
-18
8
2
6
10
G
-19
7
3
7
11
G
-20
6
4
8
12
G
-21
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 ResponseMax = Input(Cart/PolarGain)(Error Det Gain)(AGC Loop GainMax)(AGC Output Weighting).G = ground = 0.
AGC ResponseMax = ( 2)(1.64676)⎝⎛11----56--⎠⎞ (1)(1.5dB) ∼ 3.275dB/output sample time .
AGC GAIN
RESOLUTION
(dB)
48
24
12
6
3
1.5
0.75
0.375
0.1875
0.09375
0.04688
0.02344
0.01172
0.00586
0.00293
0.00146
0.000732
0.000366
0.000183
0.0000916
0.0000458
0.0000229
0.0000114
0.00000572
0.00000286
AGC ResponseMin = ( 2)(1.64676)(2–15)(1)(1.5dB) ∼ 0.000106dB/output sample time .
Thus, the expected range for the AGC rate is ~ 0.000106 to 3.275dB/output sample time.
26
FN4450.4
May 1, 2007
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