參數(shù)資料
型號： TLV320ADC3001IYZHT
廠商： TEXAS INSTRUMENTS INC
元件分類： ADC
英文描述： 2-CH 16-BIT PROPRIETARY METHOD ADC, SERIAL ACCESS, PBGA16
封裝： GREEN, DSBGA-16
文件頁數(shù)： 30/81頁
文件大?。?/td> 836K
代理商： TLV320ADC3001IYZHT
1
2
0
1
2
15
1
2
1
2
N + 2 × N z
+ N z
H(z) =
2
D z
-
-
PRB_R12
and
PRB_R9
for
,
19
M
PRB_R18
and
PRB_R15
PRB_R6,
PRB_R3,
for
,
24
M
z
Fir
)
z
(
H
M
0
n
=
=
-
SLAS548C
– OCTOBER 2008 – REVISED APRIL 2011
Biquad Section
The transfer function of each of the biquad filters is given by Equation 3.
(3)
The frequency response for each of the biquad sections with default coefficients is flat at a gain of 0 dB.
Table 8. ADC Biquad Filter Coefficients
FIlter
Filter
ADC Coefficient, Left Channel
ADC Coefficient, Right Channel
Coefficient
N0
C7 (page 4 / register 14 and page 4 / register 15)
C39 (page 4 / register 78 and page 4 / register 79)
N1
C8 (page 4 / register 16 and page 4 / register 17)
C40 (page 4 / register 80 and page 4 / register 81)
Biquad A
N2
C9 (page 4 / register 18 and page 4 / register 19)
C41 (page 4 / register 82 and page 4 / register 83)
D1
C10 (page 4 / register 20 and page 4 / register 21)
C42 (page 4 / register 84 and page 4 / register 85)
D2
C11 (page 4 / register 22 and page 4 / register 23)
C43 (page 4 / register 86 and page 4 / register 87)
N0
C12 (page 4 / register 24 and page 4 / register 25)
C44 (page 4 / register 88 and page 4 / register 89)
N1
C13 (page 4 / register 26 and page 4 / register 27)
C45 (page 4 / register 90 and page 4 / register 91)
Biquad B
N2
C14 (page 4 / register 28 and page 4 / register 29)
C46 (page 4 / register 92 and page 4 / register 93)
D1
C15 (page 4 / register 30 and page 4 / register 31)
C47 (page 4 / register 94 and page 4 / register 95)
D2
C16 (page 4 / register 32 and page 4 / register 33)
C48 (page 4 / register 96 and page 4 / register 97)
N0
C17 (page 4 / register 34 and page 4 / register 35)
C49 (page 4 / register 98 and page 4 / register 99)
N1
C18 (page 4 / register 36 and page 4 / register 37)
C50 (page 4 / register 100 and page 4 / register 101)
Biquad C
N2
C19 (page 4 / register 38 and page 4 / register 39)
C51 (page 4 / register 102 and page 4 / register 103)
D1
C20 (page 4 / register 40 and page 4 / register 41)
C52 (page 4 / register 104 and page 4 / register 105)
D2
C21 (page 4 / register 42 and page 4 / register 43)
C53 (page 4 / register 106 and page 4 / register 107)
N0
C22 (page 4 / register 44 and page 4 / register 45)
C54 (page 4 / register 108 and page 4 / register 109)
N1
C23 (page 4 / register 46 and page 4 / register 47)
C55 (page 4 / register 110 and page 4 / register 111)
Biquad D
N2
C24 (page 4 / register 48 and page 4 / register 49)
C56 (page 4 / register 112 and page 4 / register113)
D1
C25 (page 4 / register 50 and page 4 / register 51)
C57 (page 4 / register 114 and page 4 / register 115)
D2
C26 (page 4 / register 52 and page 4 / register 53)
C58 (page 4 / register 116 and page 4 / register 117)
N0
C27 (page 4 / register 54 and page 4 / register 55)
C59 (page 4 / register 118 and page 4 / register 119)
N1
C28 (page 4 / register 56 and page 4 / register 57)
C60 (page 4 / register 120 and page 4 / register 121)
Biquad E
N2
C29 (page 4 / register 58 and page 4 / register 59)
C61 (page 4 / register 122 and page 4 / register 123)
D1
C30 (page 4 / register 60 and page 4 / register 61)
C62 (page 4 / register 124 and page 4 / register 125)
D2
C31 (page 4 / register 62 and page 4 / register 63)
C63 (page 4 / register 126 and page 4 / register 127)
FIR Section
Six of the available ADC processing blocks offer FIR filters for signal processing. PRB_R9 and PRB_R12 feature
a 20-tap FIR filter, whereas the processing blocks PRB_R3, PRB_R6, PRB_R15, and PRB_R18 feature a 25-tap
FIR filter
(4)
The coefficients of the FIR filters are 16-bit 2s-complement format and correspond to the ADC coefficient space
as listed in Table 9. There is no default transfer function for the FIR filter. When the FIR filter is used, all
applicable coefficients must be programmed.
36
Copyright
2008–2011, Texas Instruments Incorporated
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