參數(shù)資料
型號： TLV320DAC3101IRHBR
廠商： TEXAS INSTRUMENTS INC
元件分類： DAC
英文描述： DAC WITH PROGRAMMABLE PLL, PQCC32
封裝： 5 X 5 MM, GREEN, PLASTIC, QFN-32
文件頁數(shù)： 25/100頁
文件大?。?/td> 1281K
代理商： TLV320DAC3101IRHBR
1
0
1
15
1
N
N z
H(z)
2
D z
-
+
=
-
1
2
0
1
2
15
1
2
1
2
N
2 N z
N z
H(z)
2
2 D z
D z
-
+
+
=
-
-
SLAS666 – JANUARY 2010
www.ti.com
5.5.1.3.1 First-Order IIR Section
The IIR is of first order and its transfer function is given by
(1)
The frequency response for the first-order IIR section with default coefficients is flat.
Table 5-13. DAC IIR Filter Coefficients
Default (Reset)
Filter
Coefficient
Left DAC Channel
Right DAC Channel
Value
First-
N0
Page 9 / register 2 and page 9 / register 3
Page 9 / register 8 and page 9 / register 9
0x7FFF (decimal 1.0
order
– LSB value)
IIR
N1
Page 9 / register 4 and page 9 / register 5
Page 9 / register 10 and page 9 / register 11
0x0000
D1
Page 9 / register 6 and page 9 / register 7
Page 9 / register 12 and page 9 / register 13
0x0000
5.5.1.3.2 Biquad Section
The transfer function of each of the biquad filters is given by
(2)
Table 5-14. DAC Biquad Filter Coefficients
Default (Reset)
Filter
Coefficient
Left DAC Channel
Right DAC Channel
Value
Biquad
N0
Page 8 / register 2 and page 8 / register 3
Page 8 / register 66 and page 8 / register 67
0x7FFF (decimal 1.0
A
– LSB value)
N1
Page 8 / register 4 and page 8 / register 5
Page 8 / register 68 and page 8 / register 69
0x0000
N2
Page 8 / register 6 and page 8 / register 7
Page 8 / register 70 and page 8 / register 71
0x0000
D1
Page 8 / register 8 and page 8 / register 9
Page 8 / register 72 and page 8 / register 73
0x0000
D2
Page 8 / register 10 and page 8 / register 11
Page 8 / register 74 and page 8 / register 75
0x0000
Biquad
N0
Page 8 / register 12 and page 8 / register 13
Page 8 / register 76 and page 8 / register 77
0x7FFF (decimal 1.0
B
– LSB value)
N1
Page 8 / register 14 and page 8 / register 15
Page 8 / register 78 and page 8 / register 79
0x0000
N2
Page 8 / register 16 and page 8 / register 17
Page 8 / register 80 and page 8 / register 81
0x0000
D1
Page 8 / register 18 and page 8 / register 19
Page 8 / register 82 and page 8 / register 83
0x0000
D2
Page 8 / register 20 and page 8 / register 21
Page 8 / register 84 and page 8 / register 85
0x0000
Biquad
N0
Page 8 / register 22 and page 8 / register 23
Page 8 / register 86 and page 8 / register 87
0x7FFF (decimal 1.0
C
– LSB value)
N1
Page 8 / register 24 and page 8 / register 25
Page 8 / register 88 and page 8 / register 89
0x0000
N2
Page 8 / register 26 and page 8 / register 27
Page 8 / register 90 and page 8 / register 91
0x0000
D1
Page 8 / register 28 and page 8 / register 29
Page 8 / register 92 and page 8 / register 93
0x0000
D2
Page 8 / register 30 and page 8 / register 31
Page 8 / register 94 and page 8 / register 95
0x0000
Biquad
N0
Page 8 / register 32 and page 8 / register 33
Page 8 / register 96 and page 8 / register 97
0x7FFF (decimal 1.0
D
– LSB value)
N1
Page 8 / register 34 and page 8 / register 35
Page 8 / register 98 and page 8 / register 99
0x0000
N2
Page 8 / register 36 and page 8 / register 37
Page 8 / register 100 and page 8 / register
0x0000
101
D1
Page 8 / register 38 and page 8 / register 39
Page 8 / register 102 and page 8 / register
0x0000
103
D2
Page 8 / register 40 and page 8 / register 41
Page 8 / register 104 and page 8 / register
0x0000
105
30
APPLICATION INFORMATION
Copyright 2010, Texas Instruments Incorporated
Product Folder Link(s): TLV320DAC3101
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