- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄378017 > MSM7544 (OKI SEMICONDUCTOR CO., LTD.) Single Rail CODEC PDF資料下載
參數(shù)資料
| 型號： | MSM7544 |
| 廠商： | OKI SEMICONDUCTOR CO., LTD. |
| 元件分類： | Codec |
| 英文描述： | Single Rail CODEC |
| 中文描述： | 單鐵編解碼器 |
| 文件頁數(shù)： | 4/19頁 |
| 文件大小： | 159K |
| 代理商： | MSM7544 |
Semiconductor
MSM7543/7544
4/19
PIN AND FUNCTIONAL DESCRIPTIONS
AIN+, AIN–, GSX
Transmit analog input and transmit level adjustment.
AIN+ is a non-inverting input to the op-amp; AIN– is an inverting input to the op-amp; GSX is
connected to the output of the op-amp and is used to adjust the level, as shown below.
When not using AIN– and AIN+, connect AIN– to GSX and AIN+ to SG. During power saving
and power down modes, the GSX output is at AG voltage.
AG
Analog signal ground.
VFRO
Receive filter output.
The output signal has an amplitude of 2.4 V
PP
above and below the signal ground voltage (SG)
when the digital signal of +3 dBmO is input to PCMIN and can drive a load of 20 k
W
or more.
For driving a load of 20 k
W
or less, connect a resistor of 20 k
W
or more between the pins VFRO
and PWI.
When adding the frequency characteristics to the receive signal, refer to the application example.
During power saving or power down mode, the output of VFRO is at the voltage level of AG.
–
+
AIN–
AIN+
SG
C1
Analog input
1) Inverting input type
R1 : variable
R2 > 20 k
W
C1 > 1/(2
￥
3.14
￥
30
￥
R1)
Gain = R2/R1
￡
10
R2
GSX
+
–
AIN+
AIN–
GSX
2) Non inverting input type
R3 > 20 k
W
R4 > 20 k
W
R5 > 50 k
W
C2 > 1/ (2
￥
3.14
￥
30
￥
R5)
Gain = 1 + R4 / R3
￡
10
R4
SG
C2
Analog input
R3
R5
R1
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MSM7545 | LSI |
| MSM7557 | Single Chip MSK Modem with Compandor for Cordless Telephone |
| MSM7564-01 | CONNECTOR ACCESSORY |
| MSM7570-01 | Multi-Function ADPCM CODEC(多功能ADPCM編碼譯碼器) |
| MSM7575 | Multi-Function ADPCM CODEC(多功能ADPCM(自適應(yīng)差分脈沖編碼調(diào)制）編碼譯碼器) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MSM7545 | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:LSI |
| MSM7547 | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:Voice Signal Level Control LSI |
| MSM7547MS-K | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:Voice Signal Level Control LSI |
| MSM7557 | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:Single Chip MSK Modem with Compandor for Cordless Telephone |
| MSM7560 | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:Single Rail ADPCM CODEC |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。