參數(shù)資料
型號： STLC7549
廠商： 意法半導(dǎo)體
元件分類： Codec
英文描述： Stereo Audio/MODEM/Telephony Codec(立體聲音頻/調(diào)制解調(diào)器/電話編解碼器)
中文描述： 立體聲音頻/調(diào)制解調(diào)器/語音編解碼器（立體聲音頻/調(diào)制解調(diào)器/電話編解碼器）
文件頁數(shù)： 6/35頁
文件大?。?/td> 335K
代理商： STLC7549
Pin N
°
STEREO AUDIO CODEC (17 pins)
Symbol
Type
Function
Voltage Reference
18
V
REFPA
O
Stereo AudioDAC and ADCPositiveReference VoltageOutput. This pinprovides the
Positive Reference Voltage used by the 16-bit stereo audioconverters. The reference
voltage, V
REFA
, is the voltage difference between the V
REFPA
and V
REFNA
outputs.
V
REFPA
should be externally decoupled with respectto V
CMA
(see Figure 17).
V
REFA
= V
REFPA
- V
REFNA
.
Stereo Audio DAC and ADC Negative Reference Voltage Output. This pin provides
the NegativeReference Voltage usedby the16-bitstereoaudioconverters,and should
be externally decoupled with respect to V
CMA
(see Figure 17).
Audio Common Mode Voltage Output. This output pin is the common mode voltage
(AV
-AGNDA)/2.
This
output
must
(see Figure 17).
19
V
REFNA
O
10
V
CMA
O
be decoupled with respect to AGNDA
Analog Inputs
15
L1
I
Left LineInput #1.Left analoginput#1.Fullscaleinput, withnogain,is1V
RMS
,centered
at V
CMA
.
Left LineInput #2.Left analoginput#2.Fullscaleinput, withnogain,is1V
RMS
,centered
at V
CMA
.
Left LineInput #3.Left analoginput#3.Fullscaleinput, withnogain,is1V
RMS
,centered
at V
CMA
.
Left Microphone Input. Microphone input for the left MIC channel, centered at V
CMA
.
This signalcan be either 1V
RMS
or 0.1V
RMS
depending on the preamp gain.
Right Line Input #1. Right analog input #1. Full scale input, with no gain, is 1V
RMS
,
centered at V
CMA
.
Right Line Input #2. Right analog input #2. Full scale input, with no gain, is 1V
RMS
,
centered at V
CMA
.
Right Line Input #3. Right analog input #3. Full scale input, with no gain, is 1V
RMS
,
centered at V
CMA
.
Right Microphone Input.Microphone input for theright MIC channel,centered atV
CMA
.
This signalcan be either 1V
RMS
or 0.1V
RMS
depending on the preamp gain.
Monophonic input , centered at V
. This signal can be 1V
. This is a general
purpose mono analog inputthat isnormally used to mix the typical ”beeper” signal on
most computers into the audiosystem.
16
L2
I
17
L3
I
14
MICL
I
12
R1
I
11
R2
I
7
R3
I
13
MICR
I
6
MONO_IN
I
Analog Outputs
1
LOUT1
O
Left Channel Output #1. Left channel analog output. Maximum signal is 1V
RMS
centered at V
CMA
.
Left Channel Output #2. Left channel analog output. Maximum signal is 1V
RMS
centered at V
CMA
.
Right Channel Output #1. Right channel analog output. Maximum signal is 1V
RMS
centered at V
CMA
.
Right Channel Output #2. Right channel analog output. Maximum signal is 1V
RMS
centered at V
CMA
.
Mono Output. This outputis asummed analogoutput fromthe leftand right andMono
input channels. Maximum signal is 1V
RMS
centered at V
CMA
.
MODEM AND TELEPHONY CODEC (13 pins)
20
V
REFNM
O
Modem and Telephony DAC and ADC Negative Reference Voltage Output. This pin
provides the Negative Reference Voltage used by the 16-bit modem converters and the
16-bits telephony converters, and should be externally decoupled with respect to V
CMM
.
(seeFigure17)
21
V
REFPM
O
Modem and Telephony DAC and ADC Positive Reference Voltage Output. This pin
provides the PositiveReference Voltage used by the16-bit modem convertersand the
16-bits telephony converters. The reference voltage, V
, is the voltage difference
between the V
REFPM
and V
REFNM
outputs. V
REFPM
should beexternally decoupled with
respect to V
CMM
REFM
= V
REFPM
- V
REFNM
23
V
CMM
O
Modem andTelephony Common Mode VoltageOutput.This outputpinis the common
mode voltage(AV
DDM
-AGNDM)/2. Thisoutputmust bedecoupled withrespect toGND
(see Figure 17).
2
LOUT2
O
3
ROUT1
O
4
ROUT2
O
5
MONO_OUT
O
7
PIN DESCRIPTION
(continued)
STLC7549
6/35
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參數(shù)描述
STLC7550 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:LOW POWER LOW VOLTAGE ANALOG FRONT END
STLC7550TQF7 功能描述:電信線路管理 IC Lo-V Analg Front-End RoHS:否 制造商:STMicroelectronics 產(chǎn)品:PHY 接口類型:UART 電源電壓-最大:18 V 電源電壓-最小:8 V 電源電流:30 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray
STLC7550TQF7TR 功能描述:電信線路管理 IC Lo-V Analg Front-End RoHS:否 制造商:STMicroelectronics 產(chǎn)品:PHY 接口類型:UART 電源電壓-最大:18 V 電源電壓-最小:8 V 電源電流:30 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray
STLC7550TQFP 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:LOW POWER LOW VOLTAGE ANALOG FRONT END
STLC75C53TQFP 制造商:未知廠家 制造商全稱:未知廠家 功能描述:MODEM
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