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| 型號(hào)： | CDB391A |
| 廠商： | Cirrus Logic, Inc. |
| 英文描述： | 24-BIT, 192 kHz STEREO DAC WITH VOLUME CONTROL |
| 中文描述： | 24位192千赫立體聲DAC控制音量 |
| 文件頁(yè)數(shù)： | 33/40頁(yè) |
| 文件大?。?/td> | 748K |
| 代理商： | CDB391A |
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CS4391A
DS600PP3
33
7. APPLICATIONS
7.1
Recommended Power-up
Sequence for Hardware Mode
1) Hold
RST
low until the power supplies, master,
and left/right clocks are stable.
2) Bring
RST
high.
7.2
Recommended Power-up
Sequence and Access to Control
Port Mode
1) Hold
RST
low until the power supply, master,
and left/right clocks are stable. In this state, the
control port is reset to its default settings and
CMOUT will remain low.
2) Bring
RST
high. The device will remain in a
low power state with CMOUT low and the con-
trol port is accessible.
3) Write 30h to register 5 within 10 ms cycles fol-
lowing the release of RST.
4) The desired register settings can be loaded
while keeping the PDN bit set to 1.
5) Set the PDN bit to 0 which will initiate the pow-
er-up sequence which requires approximately
10 μS.
7.3
The application note “Design Notes for a 2-Pole
Filter with Differential Input” discusses the second-
order
Butterworth filter and differential to single-
ended converter which was implemented on the
CS4391A evaluation board, CDB4391A. The
CS4391A filter, as seen in Figure 14, is a linear
phase design and does not include phase or ampli-
tude compensation for an external filter. Therefore,
the DAC system phase and amplitude response will
be dependent on the external analog circuitry.
Analog Output and Filtering
AMUTEC
AOUTA+
GND
C43
10UF
GND
GND
GND
1.18K
R17
NC
4
3
2
1
CON_RCA_RA
J3
2
3
1
2SC2878
Q1
2K
R25
3
1
2
Q3
MMUN2111LT1
1
2
H
H
AOUTA
VA+3/+5
R20
560
3
1
2
Q4
MMUN2211LT1
R24
5.62K
R5
47K
R28
5.62K
1.18K
R18
5.62K
R15
5.62K
R26
C49
.1UF
V-
V+
+
-
4
8
1
2
3
U11
MC33078D
C48
.1UF
GND
GND
GND
GND
GND
GND
C42
10UF
COG
C7
COG
560PF
C6
C5
COG
COG
C14
VCC
VEE
AOUTA-
Figure 15. CS4391A Output Filter
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