Datasheet

1
0 1
15 1
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
- -
- -
+ ´ +
=
- ´ -
TLV320DAC3101
SLAS666A –JANUARY 2010–REVISED MAY 2012 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
order 1.0 – 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
A 1.0 – 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
B 1.0 – 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
C 1.0 – 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
D 1.0 – 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 © 2010–2012, Texas Instruments Incorporated
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