參數(shù)資料
型號： CDB4270
廠商： Cirrus Logic, Inc.
元件分類： Codec
英文描述： 24-Bit, 192 kHz Stereo Audio CODEC
中文描述： 24位192千赫立體聲音頻CODEC
文件頁數(shù)： 30/48頁
文件大?。?/td> 730K
代理商： CDB4270
30
DS686A1
CS4270
designer to achieve idle channel noise/signal-to-noise ratios which are only limited by the external mute
circuit. The MUTE pins are active-low. See
Figure 15
for a suggested active-low mute circuit.
5.6
Synchronization of Multiple Devices
In systems where multiple ADCs are required, care must be taken to achieve simultaneous sampling. To
ensure synchronous sampling, the MCLK and LRCK must be the same for all of the CS4270’s in the sys-
tem. If only one MCLK source is needed, one solution is to place one CS4270 in Master Mode, and slave
all of the other CS4270’s to the one master. If multiple MCLK sources are needed, a possible solution
would be to supply all clocks from the same external source and time the CS4270 reset with the inactive
edge of MCLK. This will ensure that all converters begin sampling on the same clock edge.
5.7
Grounding and Power Supply Decoupling
As with any high resolution converter, the CS4270 requires careful attention to power supply and ground-
ing arrangements if its potential performance is to be realized.
Figure 10
shows the recommended power
arrangements, with VA and VD connected to clean supplies. VD, which powers the digital filter, may be
run from the system digital supply (VD) or may be powered from the analog supply (VA) via a resistor. In
this case, no additional devices should be powered from VD. Power supply decoupling capacitors should
be as near to the CS4270 as possible, with the low value ceramic capacitor being the nearest. All signals,
especially clocks, should be kept away from the VREF and VCOM pins in order to avoid unwanted cou-
pling into the modulators. The VREF and VCOM decoupling capacitors, particularly the 0.1 μF, must be
positioned to minimize the electrical path from VREF and AGND. The CDB4270 evaluation board dem-
onstrates the optimum layout and power supply arrangements. To minimize digital noise, connect the
CS4270 digital outputs only to CMOS inputs.
LPF
+V
EE
-V
EE
560
Audio
Out
2 k
10 k
-V
EE
+V
A
MMUN2111LT1
AOUTx
MUTEx
CS4270
AC
Couple
47 k
Figure 15. Suggested Active-Low Mute Circuit
相關PDF資料
PDF描述
CDB4271 24-Bit, 192 kHz Stereo Audio CODEC
CDB4272 24-Bit, 192 kHz Stereo Audio CODEC
CDB42L51 Silver Mica Capacitor; Capacitance:120pF; Capacitance Tolerance:+/- 5%; Series:CDV16; Voltage Rating:1000VDC; Capacitor Dielectric Material:Mica; Termination:Radial Leaded; Lead Pitch:5.94mm; Leaded Process Compatible:Yes RoHS Compliant: Yes
CDB42L50 Silver Mica Capacitor; Capacitance:100pF; Capacitance Tolerance:+/- 5%; Series:CDS; Voltage Rating:300VDC; Capacitor Dielectric Material:Mica; Termination:Radial Leaded; Lead Pitch:3mm; Leaded Process Compatible:No RoHS Compliant: No
CDB43122 122dB, 24-Bit, 192kHz DAC for Digital Audio
相關代理商/技術參數(shù)
參數(shù)描述
CDB4271 功能描述:音頻 IC 開發(fā)工具 Eval Bd CS4271 RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評估:TAS5614L 工作電源電壓:12 V to 38 V
CDB4272 功能描述:音頻 IC 開發(fā)工具 Eval Bd CS4272 RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評估:TAS5614L 工作電源電壓:12 V to 38 V
CDB4299 功能描述:音頻 IC 開發(fā)工具 Eval Bd AC’97 CODEC w/SRC RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評估:TAS5614L 工作電源電壓:12 V to 38 V
CDB42L50 制造商:CIRRUS 制造商全稱:Cirrus Logic 功能描述:Low Voltage, Stereo CODEC with headphone Amp
CDB42L51 功能描述:音頻 IC 開發(fā)工具 Eval Bd Low-volt CODEC RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評估:TAS5614L 工作電源電壓:12 V to 38 V
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