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參數(shù)資料
| 型號： | WM8722 |
| 廠商： | Wolfson Microelectronics |
| 英文描述： | Stereo DAC with Integrated Tone Generator and Line/Variable Level Outputs |
| 中文描述： | 立體聲DAC，具有集成的音調(diào)發(fā)生器和線/變平輸出 |
| 文件頁數(shù)： | 22/23頁 |
| 文件大?。?/td> | 438K |
| 代理商： | WM8722 |
WM8722
Advanced Information
WOLFSON MICROELECTRONICS LTD
AI Rev 1.5 May 2000
22
RECOMMENDED EXTERNAL COMPONENTS
2
DVDD
DGND
MC
AGND
AVDD
CAP
C
12
C
11
AGND
6
16
SPI or 2-wire
Interface
WM8722
NOTES:
1. AGND and DGND should be connected as close to the WM8722 as possible.
2. C
2
, C
3
, C
9
, C
10
and C
11
should be positioned as close to the WM8722 as possible.
3. Capacitor types should be carefully chosen. Capacitors with very low ESR are
recommended for optimum performance.
C
3
C
4
C
2
DVDD
C
1
3
MD
4
LATCH
VAROUTR
12
C
5
VAROUTL
C
6
AC-Coupled
Variable Outputs
to External LPF
9
AVDD
1
TCLK
17
DIN
18
LRCIN
20
SCKI
Audio Serial Data I/F
DGND
AGND
LINEOUTR
13
C
7
LINEOUTL
C
8
AC-Coupled
Line Level outputs
to External LPF
8
5
BUSY
19
BCKIN
11
10
+
+
+
+
+
15
+
+
7
MIXINR
14
MIXINL
C
9
C
10
2-wire Interface
SPI Interface
DVDD
DGND
R1
Figure 11. External Components Diagram
RECOMMENDED EXTERNAL COMPONENTS VALUES
COMPONENT
REFERENCE
C1 and C4
C2 and C3
C5, C6, C7 and C8
C11
C12
R1
C9,C10
SUGGESTED
VALUE
10
μ
F
0.1
μ
F
10
μ
F
0.1
μ
F
10
μ
F
10k
1
μ
F
DESCRIPTION
De-coupling for DVDD and AVDD.
De-coupling for DVDD and AVDD.
Output AC coupling caps to remove midrail DC level from outputs.
Reference de-coupling capacitors for CAP pin.
AC coupling capacitors for setting DC inputs level of analogue
Table 11. External Components Description
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| WM8722_01 | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:Stereo DAC with Integrated Tone Generator and Line/Variable Level Outputs |
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