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參數(shù)資料
| 型號： | DF1704E |
| 英文描述： | Stereo, 24-Bit, 96kHz 8X Oversampling Digital Interpolation Filter DIGITAL-TO-ANALOG CONVERTER |
| 中文描述： | 立體聲，24位，96kHz的8倍過采樣數(shù)字插值濾波器的數(shù)字模擬轉(zhuǎn)換器 |
| 文件頁數(shù)： | 12/16頁 |
| 文件大小： | 222K |
| 代理商： | DF1704E |
12
DF1704
MODE2 Register
The MODE2 register is used to program various functions:
MUT
Soft Mute Function.
When MUT = 0, Soft Mute is ON for both Left
and Right channels.
When MUT = 1, Soft Mute is OFF for both Left
and Right channels.
DEM
Digital De-Emphasis Function.
When DEM = 0, de-emphasis is OFF.
When DEM = 1, de-emphasis is ON.
IW[1:0]
Input Data Format and Word Length.
I
2
S
IW1
IW0
0
0
0
Description
16-Bit Data, Standard
Format (MSB-First,
Right-Justified)
20-Bit Data, Standard
Format
24-Bit Data, Standard
Format
24-Bit Data, MSB-First,
Left-Justified
16-Bit Data, I
2
S Format
24-Bit Data, I
2
S format
Reserved
Reserved
0
0
1
0
1
0
0
1
1
1
1
1
1
Output Data Word Length.
OW1 OW0
0
0
0
1
1
0
1
1
MODE3 Register
The MODE3 register is used to program various functions.
I
2
S
Input Data Format.
When I
2
S = 0, standard or left-justified formats
are enabled.
When I
2
S = 1, the I
2
S formats are enabled.
LRP
LRCIN Polarity Selection.
When LRP = 0, Left channel is HIGH and Right
channel is LOW.
When LRP = 1, Left channel is LOW and Right
channel is HIGH.
0
0
1
1
0
1
0
1
OW[1:0]
Description
16-Bit Data, MSB-First
18-Bit Data, MSB-First
20-Bit Data, MSB-First
24-Bit Data, MSB-First
ATC
Attenuator Control.
This bit is used to determine whether the Left
and Right channel attenuators operate with inde-
pendent data, or use common data (the Left
channel data in bits AL[7:0] of register MODE0).
When ATC = 0, the Left and Right channel
attenuator data is independent.
When ATC = 1, the Left and Right channel
attenuators use common data.
Digital Filter Roll-Off Selection.
When SRO = 0, sharp roll-off is selected.
When SRO = 1, slow roll-off is selected.
CLKO Output Frequency Selection.
When CKO = 0, the CLKO frequency is the
same as the clock at the XTI input.
When CKO =1, the CLKO frequency is half of
the XTI input clock frequency.
Sampling Frequency Selection for the De-Em-
phasis Function.
SF1 SF0
0
0
44.1 kHz
0
1
Reserved
1
0
48 kHz
1
1
32 kHz
SRO
CKO
SF[1:0]
Description
APPLICATIONS INFORMATION
PCB LAYOUT GUIDELINES
In order to obtain the specified performance from the DF1704
and its associated D/A converters, proper printed circuit
board layout is essential. Figure 11 shows two approaches
for obtaining the best audio performance.
Figure 11(a) shows a standard, mixed signal layout scheme.
The board is divided into digital and analog sections, each
with its own ground. The ground areas should be put on a
split-plane, separate from the routing and power layers. The
DF1704 and all digital circuitry should be placed over the
digital section, while the audio DACs and analog circuitry
should be located over the analog section of the board. A
common connection between the digital and analog grounds
is required and is done at a single point as shown.
For Figure 11(a), digital signals should be routed from the
DF1704 to the audio DACs using short, direct connections
to reduce the amount of radiated high-frequency energy. If
necessary, series resistors may be placed in the clock and
data signal paths to reduce or eliminate any overshoot or
undershoot present on these signals. A value of 50
to 100
is recommended as a starting point, but the designer should
experiment with the resistor values in order to obtain the best
results.
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相關代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DF1704E/2K | 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC 8X Oversampling Filter RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量: 分辨率:16 bit 接口類型:I2S, UBS 轉(zhuǎn)換速率: 信噪比:98 dB 工作電源電壓:5 V DAC 輸出端數(shù)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 |
| DF1704E/2KG4 | 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC 8X Oversampling Filter RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量: 分辨率:16 bit 接口類型:I2S, UBS 轉(zhuǎn)換速率: 信噪比:98 dB 工作電源電壓:5 V DAC 輸出端數(shù)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 |
| DF1704EG4 | 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC 8X Oversampling Filter RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量: 分辨率:16 bit 接口類型:I2S, UBS 轉(zhuǎn)換速率: 信噪比:98 dB 工作電源電壓:5 V DAC 輸出端數(shù)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 |
| DF1706 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Stereo, 24-Bit, 192kHz 8x Oversampling Digital Interpolation Filter |
| DF1706E | 功能描述:有源濾波器 8X Oversampling Digi Interpolation Filter RoHS:否 制造商:Maxim Integrated 通道數(shù)量:1 截止頻率:150 KHz 電源電壓-最大:11 V 電源電壓-最小:4.74 V 最大工作溫度:+ 85 C 安裝風格:Through Hole 封裝 / 箱體:PDIP N 封裝:Tube |
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