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| 型號： | PCM3793ARHBT |
| 元件分類： | Codec |
| 英文描述： | 16-Bit, Low-Power Stereo Audio CODEC With Microphone Bias, Headphone, and Digital Speaker Amplifier |
| 中文描述： | 16位，低功耗立體聲音頻編解碼器麥克風(fēng)偏置，耳機(jī)，揚(yáng)聲器放大器和數(shù)字 |
| 文件頁數(shù)： | 59/68頁 |
| 文件大?。?/td> | 982K |
| 代理商： | PCM3793ARHBT |
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f : Sampling Frequency [Hz]
f : Center Frequency [Hz]
f : Band Width [Hz]
0 dB
–3 dB
Frequency – Hz
A
f
C
f
b
(Equation 1)
(Equation 2)
a = –(1 + a ) cos
÷
è
2 f
p
C
f
S
a =
1 – tan
÷
è
2 f /f
p
2
1 + tan
÷
è
2 f /f
p
2
M0058-01
PCM3793A
PCM3794A
SLAS529A–JANUARY 2007–REVISED FEBRUARY 2007
Registers 101–104
B15
B14
B13
B12
B11
B10
B9
B8
B7
B6
B5
B4
B3
B2
B1
B0
Register 101
0
IDX6
IDX5
IDX4
IDX3
IDX2
IDX1
IDX0
S107
S106
S105
S104
S103
S102
S101
S100
Register 102
0
IDX6
IDX5
IDX4
IDX3
IDX2
IDX1
IDX0
S115
S114
S113
S112
S111
S110
S109
S108
Register 103
0
IDX6
IDX5
IDX4
IDX3
IDX2
IDX1
IDX0
S207
S206
S205
S204
S203
S202
S201
S200
Register 104
0
IDX6
IDX5
IDX4
IDX3
IDX2
IDX1
IDX0
S215
S214
S213
S212
S211
S210
S209
S208
IDX[6:0]:
110 0101b (65h): Register 101
IDX[6:0]:
110 0110b (66h): Register 102
IDX[6:0]:
110 0111b (67h): Register 103
IDX[6:0]:
110 1000b (68h): Register 104
S[107:100]: Lower 8 Bits of Coefficient a
1
for Second-Stage Notch Filter
S[115:108]: Upper 8 Bits of Coefficient a
1
for Second-Stage Notch Filter
S[207:200]: Lower 8 Bits of Coefficient a
2
for Second-Stage Notch Filter
S[215:208]: Upper 8 Bits of Coefficient a
2
for Second-Stage Notch Filter
Default value: 0000 0000
These bits are used to change the characteristics of the second-stage notch filter. See
Figure 39
for details.
The PCM3793A/94A provides two notch filters for the digital input to the DAC or the digital output from the ADC.
The optional filter characteristics of each filter are programmable. The characteristics are given by calculating
the coefficients for three parameters, sampling frequency, center frequency, and bandwidth, as shown in
Figure 39
. All coefficients must be written as 2s-complement binary data into registers 97, 98, 99, 100, 101, 102,
103, and 104.
Figure 39. Parameter Settings for Notch Filter
The coefficients are calculated using Equation 1 and Equation 2 in
Figure 39
. An example follows:
f
S
= 16 kHz, f
C
= 0.5 kHz, f
b
= 0.2 kHz
a
2
= 0.924390492
→
Decimal to Hex
→
3B29h
a
1
= –1.887413868
→
Decimal to Hex
→
8735h
a
2
: F[215:208] = 3Bh, F[207:200] = 29h
a
1
: F[115:108] = 87h, F[107:100] = 35h
59
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PCM3793ARHBTG4 | 功能描述:接口—CODEC Very Low-Pwr Stereo CODEC RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉(zhuǎn)換速率:48 kSPs 接口類型:I2C ADC 數(shù)量:2 DAC 數(shù)量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel |
| PCM3793RHB | 制造商:BB 制造商全稱:BB 功能描述:16-Bit, Low-Power Stereo Audio CODEC With Microphone Bias, Headphone, and Digital Speaker Amplifier |
| PCM3793RHBR | 功能描述:接口—CODEC Very Lo-Pwr Stereo CODEC RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉(zhuǎn)換速率:48 kSPs 接口類型:I2C ADC 數(shù)量:2 DAC 數(shù)量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel |
| PCM3793RHBRG4 | 功能描述:接口—CODEC Very Lo-Pwr Stereo CODEC RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉(zhuǎn)換速率:48 kSPs 接口類型:I2C ADC 數(shù)量:2 DAC 數(shù)量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel |
| PCM3793RHBT | 功能描述:接口—CODEC Very Lo-Pwr Stereo CODEC RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉(zhuǎn)換速率:48 kSPs 接口類型:I2C ADC 數(shù)量:2 DAC 數(shù)量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel |
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