參數(shù)資料
型號： CDB42L51
廠商： Cirrus Logic, Inc.
英文描述： 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
中文描述： 低功耗，立體聲耳機放大器編解碼器
文件頁數(shù)： 30/83頁
文件大?。?/td> 1348K
代理商： CDB42L51
30
DS679A2
CS42L51
The MICBIAS series resistor must be selected based on the requirements of the particular microphone
used. The MICBIAS output pin is selected using the MICBIAS_SEL bit.
4.3.5
Analog Input Multiplexer
A stereo 4-to-1 analog input multiplexer selects between a line-level input source, or a mic-level input
source, depending on the PDN_PGAx and AINx_MUX[1:0] bit settings. Signals may be routed to or by-
passed around the PGA. To conserve power, the PGA’s may be powered down allowing the user to select
from multiple line-level sources and route the stereo signal directly to the ADC. When using the MIC pre-
amp, however, the PGA must be powered up.
Analog input channel B may also be used as an output for the MIC bias voltage. The MICBIAS_SEL bit
routes the bias voltage to either of two pins. The multiplexer must then select from the remainder of the
two input channels.
The ADC, PGA and MIC pre-amplifier each has an associated input resistance. When selecting between
these paths, the input resistance to the CODEC will change accordingly. Refer to the input resistance
characteristics in the
Characteristic and Specification Tables
for the input resistance of each path.
Software
Controls:
“Interface Control (Address 04h)” on page 49
,
“MIC Control (Address 05h)” on page 51
.
Software
Controls:
“Power Control 1 (Address 02h)” on page 47
,
“MIC Control (Address 05h)” on page 51
,
“ADCx
Input Select, Invert & Mute (Address 07h)” on page 53
.
MICIN1
MICIN2
Σ
+
+
MICBIAS
18
17
20
//
//
Figure 10. MIC Input Mix w/Common Mode Rejection
Full-Scale
Differential
Input Level (MICMIX=1)
= (AINxA - AINxB) = 3.6 V
PP
= 1.27 V
RMS
AINxA
AINxB
2.15 V
1.25 V
0.35 V
2.5 V
2.15 V
1.25 V
0.35 V
VA
Figure 11. Differential Input
相關(guān)PDF資料
PDF描述
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
CDB4327 Low Cost, 20-Bit, Stereo, Audio D/A Converter
CDB4328 18-Bit, Stereo D/A Converter for Digital Audio
CDB4329 20-Bit, Stereo D/A Converter for Digital Audio
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
CDB42L51/FAE 制造商:Cirrus Logic 功能描述:EVAL BOARD FOR THE CS42L51 PORTABLE STEREO CODEC - Bulk
CDB42L52 功能描述:音頻 IC 開發(fā)工具 Eval Bd LP CODEC w/classD Spkr Driver 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
CDB42L52/FAE 制造商:Cirrus Logic 功能描述:EVAL BD LOW-VOLTAGE STEREO CODEC - Bulk
CDB42L55 功能描述:音頻 IC 開發(fā)工具 Eval Bd Ultra Low PWR Stereo 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
CDB42L56 功能描述:音頻 IC 開發(fā)工具 Eval Bd 24Bit Ultra LP Ster CD w/clH HP 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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