參數(shù)資料
型號: TDA8046
廠商: NXP Semiconductors N.V.
英文描述: ECONOLINE: RB & RA - Dual Output from a Single Input Rail- Power Sharing on Output- Industry Standard Pinout- 1kVDC & 2kVDC Isolation- Custom Solutions Available- UL94V-0 Package Material- Efficiency to 85%
中文描述: 多模QAM解調(diào)器
文件頁數(shù): 27/48頁
文件大?。?/td> 245K
代理商: TDA8046
1996 Nov 19
27
Philips Semiconductors
Product specification
Multi-mode QAM demodulator
TDA8046
Fig.28 Demapping scheme 4; bit allocation: 64-QAM.
Bit allocation for 64-QAM: b7, b6, b5, b4, b3 and b2; b1 = b0 = 0.
handbook, full pagewidth
MGG190
1 0 0
1 0 1
1 1 0
1 1 1
0 0 0
0 0 1
0 1 0
0 1 1
I
Q
b2 b3 b4
b5
b6
b7
0 1 1
0 1 0
0 0 1
0 0 0
1 1 1
1 1 0
1 0 1
1 0 0
Fig.29 Demapping scheme 4; bit allocation: 32-QAM.
Bit allocation for 32-QAM: b7, b6, b5, b4 and b3; b2 = b1 = b0 = 0.
handbook, full pagewidth
MGG191
0 1 0 0 0
0 1 1 0 0
0 1 0 1 0
0 1 0 0 1
0 1 1 0 1
0 1 1 1 0
0 1 0 1 1
0 1 1 1 1
0 0 0 1 1
0 0 0 0 1
0 0 0 0 0
0 0 1 1 1
0 0 1 0 1
0 0 1 0 0
0 0 1 1 0
0 0 0 1 0
I
Q
A quadrant
b7 b6 b5 b4 b3
B quadrant
D quadrant
C quadrant
1 1 0 1 0
1 1 1 1 0
1 1 1 0 0
1 1 1 0 1
1 1 1 1 1
1 1 0 0 0
1 1 0 0 1
1 1 0 1 1
1 0 1 1 1
1 0 0 1 1
1 0 1 1 0
1 0 1 0 1
1 0 0 0 1
1 0 0 1 0
1 0 1 0 0
1 0 0 0 0
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