參數資料
型號： PCM1748KE
英文描述： 24-Bit, 96kHz Sampling Enhanced Multilevel, Delta-Sigma, Audio DIGITAL-TO-ANALOG CONVERTER
中文描述： 24位，96kHz采樣加強多層次，Δ-Σ，音頻數字模擬轉換器
文件頁數： 12/22頁
文件大小： 323K
代理商： PCM1748KE
PCM1748
SBAS165
12
REGISTER DEFINITIONS
B15
B14
B13
B12
B11
B10
B9
B8
B7
B6
B5
B4
B3
B2
B1
B0
Register 16
0
IDX6
IDX5
IDX4
IDX3
IDX2
IDX1
IDX0
AT17
AT16
AT15
AT14
AT13
AT12
AT11
AT10
Register 17
0
IDX6
IDX5
IDX4
IDX3
IDX2
IDX1
IDX0
AT27
AT26
AT25
AT24
AT23
AT22
AT21
AT20
ATx[7:0]
Digital Attenuation Level Setting
where x = 1 or 2, corresponding to the DAC output V
OUT
L (x = 1) and V
OUT
R (x = 2).
Default Value: 1111 1111
B
Each DAC channel (V
OUT
L and V
OUT
R) includes a digital attenuator function. The attenuation level may be
set from 0dB to –63dB, in 0.5dB steps. The attenuation data for each channel can be set individually.
The attenuation level may be set using the formula below.
Attenuation Level (dB) = 0.5 (ATx[7:0]
DEC
– 255)
where: ATx[7:0]
DEC
= 0 through 255
for: ATx[7:0]
DEC
= 0 through 128, the attenuator is set to infinite attenuation.
The following table shows attenuator levels for various settings.
ATx[7:0]
Decimal Value
Attenuator Level Setting
1111 1111
B
1111 1110
B
1111 1101
B
1000 0011
B
1000 0010
B
1000 0001
B
1000 0000
B
0000 0000
B
255
254
253
131
130
129
128
0
0dB, No Attenuation (default)
–0.5dB
–1.0dB
–62.0dB
–62.5dB
–63.0dB
Mute
Mute
B15
B14
B13
B12
B11
B10
B9
B8
B7
B6
B5
B4
B3
B2
B1
B0
Register 18
0
IDX6
IDX5
IDX4
IDX3
IDX2
IDX1
IDX0
RSV
OVER
RSV
RSV
RSV
RSV
MUT2
MUT1
MUTx
Soft Mute Control
Where x = 1 or 2, corresponding to the DAC output V
OUT
L (x = 1) and V
OUT
R (x = 2).
Default Value: 0
MUTx = 0
MUTx = 1
Mute Disabled (default)
Mute Enabled
The mute bits, MUT1 and MUT2, are used to enable or disable the Soft Mute function for the corresponding
DAC outputs, V
OUT
L and V
OUT
R. The Soft Mute function is incorporated into the digital attenuators. When
Mute is disabled (MUTx = 0), the attenuator and DAC operate normally. When Mute is enabled by setting
MUTx = 1, the digital attenuator for the corresponding output will be decreased from the current setting
to the infinite attenuation setting one attenuator step (0.5dB) at a time. This provides a quiet, “pop”-free
muting of the DAC output.
OVER
Oversampling Rate Control
Default Value: 0
OVER = 0
OVER = 1
64x Oversampling (default)
128x Oversampling
The OVER bit is used to control the oversampling rate of the delta-sigma DACs.
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相關代理商/技術參數
參數描述
PCM1748KE/2K 功能描述:音頻數/模轉換器 IC 24Bit/192kHz Smplg 6Ch Enh Mltl D-S DAC RoHS:否 制造商:Texas Instruments 轉換器數量: 分辨率:16 bit 接口類型:I2S, UBS 轉換速率: 信噪比:98 dB 工作電源電壓:5 V DAC 輸出端數量:2 工作溫度范圍:- 25 C to + 85 C 電源電流:23 mA 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-32 封裝:Reel
PCM1748KE/2KG4 功能描述:音頻數/模轉換器 IC 24Bit/192kHz Smplg 6Ch Enh Mltl D-S DAC RoHS:否 制造商:Texas Instruments 轉換器數量: 分辨率:16 bit 接口類型:I2S, UBS 轉換速率: 信噪比:98 dB 工作電源電壓:5 V DAC 輸出端數量:2 工作溫度范圍:- 25 C to + 85 C 電源電流:23 mA 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-32 封裝:Reel
PCM1748KEG4 功能描述:音頻數/模轉換器 IC 24Bit/192kHz Smplg 6Ch Enh Mltl D-S DAC RoHS:否 制造商:Texas Instruments 轉換器數量: 分辨率:16 bit 接口類型:I2S, UBS 轉換速率: 信噪比:98 dB 工作電源電壓:5 V DAC 輸出端數量:2 工作溫度范圍:- 25 C to + 85 C 電源電流:23 mA 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-32 封裝:Reel
PCM-175 功能描述:電線鑒定 Pre-Printed WM Card, Vinyl Cloth, .22" W RoHS:否 制造商:TE Connectivity / Q-Cees 產品:Labels and Signs 類型: 材料:Vinyl 顏色:Blue 寬度:0.625 in 長度:1 in
PCM175/100 G 制造商:Fibox 功能描述:Bulk
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