參數(shù)資料
型號(hào)： HSP50214BVI
廠商： HARRIS SEMICONDUCTOR
元件分類： 通信及網(wǎng)絡(luò)
英文描述： Programmable Downconverter
中文描述： SPECIALTY TELECOM CIRCUIT, PQFP120
文件頁數(shù)： 23/60頁
文件大?。?/td> 573K
代理商： HSP50214BVI
3-23
Using AGC loop gain, the AGC range, and expected error
detector output, the gain adjustments per output sample for
the Loop Filter Section of the Digital AGC can be given by
The loop gain determines the growth rate of the sum in the
loop accumulator which, in turn, determines how quickly the
AGC gain traces the transfer function given in Figures 21
and 22. Since the log of the gain response is roughly linear,
the loop response can be approximated by multiplying the
maximum AGC gain error by the loop gain. The expected
TABLE 6C. AGC LIMIT DATA FORMAT
CONTROL WORD 9 BIT:
27
26
25
24
23
22
21
20
19
18
17
16
FORMAT
e
e
e
e
m
m
m
m
m
m
m
m
S
S
EXP=2
NNNN
MANTISSA =
01.XXXXXXXXXXXXXX
LIMIT
DET
L
L
LIMIT
DET
R
18
IFIR
QFIR
QAGC
IAGC
S
U
T
MAGNITUDE
S
L
M
E
AGCGNSEL
EXP
LIMIT
DET
UPPER LIMIT
LOWER LIMIT
μ
P
SERIAL
OUT
MSB = 0
AGC LOOP FILTER
AGC MULTIPLIER/SHIFTER
18
26
18
18
26
RESAMPLING
FIR FILTERS
AND
INTERPOLATING
HALFBAND
FILTERS
CARTESIAN
TO
POLAR
COORDINATE
CONVERTER
(G = 1.64676)
4
16
L
20
R
16
16
4
4
A
A
L
M
E
13
13
AGC ERROR SCALING
AGC
ERROR
DETECTOR
MSB = 0
(RANGE = 0 TO 2.3)
(RANGE = 0 TO 1)
Controlled via microprocessor interface.
FIGURE 23. AGC BLOCK DIAGRAM
(RANGE = -2.18344 TO 2.18344)
+
M
U
X
μ
P
AGC
LOAD
EN
(11 MANTISSA
4 EXPONENT)
MANTISSA
(
(EQ. 18)
AGC Slew Rate
1.5dB THRESH
MAG*1.64676
ELG
(
)) ×
–
=
M
LG
(
)
2
4
(
–
)
2
15
–
(
)
–
HSP50214B
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HSP50214BVIZ 功能描述:上下轉(zhuǎn)換器 120L MQFP INDTEMP 14-BIT PROG DWNCNVRT RoHS:否 制造商:Texas Instruments 產(chǎn)品:Down Converters 射頻:52 MHz to 78 MHz 中頻:300 MHz LO頻率: 功率增益: P1dB: 工作電源電壓:1.8 V, 3.3 V 工作電源電流:120 mA 最大功率耗散:1 W 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFP-128
HSP50214VC 制造商:Rochester Electronics LLC 功能描述:- Bulk
HSP50214VI 制造商:Rochester Electronics LLC 功能描述:- Bulk
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