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): 23/48頁
文件大小: 245K
代理商: TDA8046
1996 Nov 19
23
Philips Semiconductors
Product specification
Multi-mode QAM demodulator
TDA8046
Fig.21 Demapping scheme 2; bit allocation: 64-QAM and 32-QAM.
Bit allocation for 64-QAM: b7, b6, b5, b3, b2, b1; b4 = b0 = 0.
Bit allocation for 32-QAM: not implemented.
handbook, full pagewidth
MGG185
0 1 1
0 1 0
0 0 1
0 0 0
1 1 1
1 1 0
1 0 1
1 0 0
I
Q
b7 b6 b5
b3
b2
b1
1 0 0
1 0 1
1 1 0
1 1 1
0 0 0
0 0 1
0 1 0
0 1 1
Fig.22 Demapping scheme 2; bit allocation: 4-QAM and 16-QAM.
a. Bit allocation for 4-QAM: b7 and b3; b6 = b5 = b4 = b2 = b1 = b0 = 0.
b. Bit allocation for 16-QAM: b7, b6, b3 and b2; b5 = b4 = b1 = b0 = 0.
handbook, full pagewidth
MGG186
0 1
0 0
1 1
1 0
I
Q
b7 b6
b3
b2
1 0
1 1
0 0
0 1
0
1
1
0
I
Q
b7
b3
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