- 您现在的位置：买卖IC网 > Datasheet目录441 > HSP50216KIZ (Intersil)IC DOWNCONVERTER DGTL 4CH 196BGA Datasheet资料下载
参数资料
| 型号： | HSP50216KIZ |
| 厂商： | Intersil |
| 文件页数： | 23/58页 |
| 文件大小： | 0K |
| 描述： | IC DOWNCONVERTER DGTL 4CH 196BGA |
| 标准包装： | 1 |
| 功能： | 降频器 |
| RF 型： | W-CDMA |
| 封装/外壳： | 196-LFBGA |
| 包装： | 托盘 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页当前第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页
HSP50216
AGC LOOP FILTER
μ P
AGC ERROR SCALING
(RANGE = -2.18344 TO 2.18344)
AGC
ERROR
DETECTOR
SERIAL
OUT
19
MSB = 0
M
U
X
+
28
16
MANTISSA
μ P
16
MSB = 0
EXP
4
4
Δ
(11 MANTISSA
4 EXPONENT)
EN AGC
LOAD
18
LIMIT
DET
UPPER LIMIT ?
LOWER LIMIT ?
AGCGNSEL
24
4
EXP=2 NNNN
24
16 MANTISSA =
01.XXXXXXXXXXXXXX
LIMIT
DET
24
MAGNITUDE
(RANGE = 0 TO 2.32887)
(RANGE = 0 TO 1)
16
IFIR
IAGC
CARTESIAN
LIMIT
DET
TO
POLAR
COORDINATE
CONVERTER
QFIR
24
24
24
(G = 1.64676)
QAGC
AGC MULTIPLIER/SHIFTER
? Controlled via microprocessor interface.
FIGURE 1. AGC FUNCTIONAL BLOCK DIAGRAM
In dB, this can be expressed as:
(AGC Mult/Shift Gain)dB = 20 log 10 (2 N [1 + (X)2 -14 ])
The full AGC range of the multiplier/shifter is from 0 dB to
where the magnitude limits are determined by the maximum
I and Q signal levels into the Cartesian to polar converter.
Taking fractional 2's complement representation, magnitude
ranges from 0 to 2.329, where the maximum output is
20log 10 [1+(2 14 -1)2 -14 ] + 20log 10 [2 15 ] = 96.329 dB.
2
r = 1.64676 1 + 1
2
= 1.64676x1.414 = 2.329
The 16 bit resolution of the mantissa provides a theoretical
AM modulation level of -96dBc (depending on loop gain,
settling mode and SNR). This effectively eliminates AM
spurious caused by the AGC resolution.
The Cartesian to polar coordinate converter accepts I and Q
data and generates magnitude and phase data. The
magnitude output is determined by the equation:
The AGC loop feedback path consists of an error detector,
error scaling, and an AGC loop filter. The error detector
subtracts the magnitude output of the coordinate converter
from the programmable AGC THRESHOLD value. The AGC
THRESHOLD value is set in IWA register *012h and is equal
to 1.64676 times the desired magnitude of the I1/Q1 output.
Note that the MSB is always zero. The range of the AGC
2
r = 1.64676 I + Q
2
23
THRESHOLD value is 0 to +3.9999. The AGC Error
Detector output has the identical range.
FN4557.6
August 17, 2007
相关PDF资料 |
PDF描述 |
|---|---|
| HSP50415VIZ | IC MODULATOR PROGRAMABLE 100MQFP |
| HSSLS-CALBL-013 | HEATSINK 48W SPOT OSRAM PREVALED |
| HSSLS-CALCL-005 | HEATSINK 21W SPOT PHILIPS SLM |
| HSSLS-CALCL-013 | HEATSINK 48W DOWNLIGHT 140 |
| HTA-300-S | SENSOR CURR 300A -/+15V MOD |
相关代理商/技术参数 |
参数描述 |
|---|---|
| HSP50306 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Digital QPSK Demodulator |
| HSP50306 WAF | 制造商:Intersil Corporation 功能描述: |
| HSP50306_04 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Digital QPSK Demodulator |
| HSP50306SC-25 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| HSP50306SC-2596 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Digital QPSK Demodulator |
发布紧急采购，3分钟左右您将得到回复。