- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄371186 > TLV320AC57DW (Texas Instruments, Inc.) 3-V VOICE-BAND AUDIO PROCESSORS VBAPE PDF資料下載
參數(shù)資料
| 型號： | TLV320AC57DW |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 3-V VOICE-BAND AUDIO PROCESSORS VBAPE |
| 中文描述： | 3伏的語音頻帶音頻處理器VBAPE |
| 文件頁數(shù)： | 22/46頁 |
| 文件大小： | 452K |
| 代理商： | TLV320AC57DW |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁當前第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁
SLAS428 AUGUST 2004
www.ti.com
22
100
90
80
70
60
50
40
30
20
10
0
0
50
100
PO Output Power mW
150
200
250
300
350
2 VPP
T
2.402 VPP
Figure 17. THD vs Output Power Delivered to an an 8- Load (25 C, AVDD = DRVDD = 3.3 V, DVDD = 1.8
V, DAC Output Swing Set to 2 V and 2.4V, and Short-Circuit Protection Disabled)
100
90
80
70
60
50
40
30
20
10
0
2.7
2.8
2.9
3
AVDD, DRVDD V
3.1
3.2
3.3
3.4
3.5
3.6
T
Figure 18. THD vs AVDD, DRVDD Supply Voltage (25 C When Driving a 1 dB, 1-kHz Sinewave From the
DAC Into an 8- Load, with DAC Output Swing Set to 2.4 V, and Short-Circuit Protection Disabled)
The ’DAC26 incorporates a programmable short-circuit detection/protection function with different modes of operation.
During the insertion or removal of a headphone plug from the jack, the output pins of the drivers may be accidentally shorted,
causing the part to potentially draw a huge current, which may cause the power supply voltages to dip. Bits D8D7 of
REG1DH/Page2 control how the short-circuit detection/protection operates in the ’DAC26. One option is to fully disable
short-circuit protection, which also enables the audio output drivers to deliver more power to a low-impedance load (such
as an 8-
speaker). However, care must be taken to prevent any short-circuit from occurring while the part is in this mode.
A second programmable configuration enables current-limiting in the audio output drivers, so that excessive currents
cannot be provided if the outputs are shorted. It also enables the internal short-circuit detection function, which can detect
excess current being drawn from the drivers and set a short-circuit detect flag (Page2, REG1DH, bit D6). This flag can
be read by the user to power down the drivers if desired. This flag is cleared only if the short-circuit condition is removed.
If the user does not monitor this flag and powers down the drivers when a short-circuit occurs, the current-limiting prevents
excessive currents from being drawn, but power dissipation is higher due to this limited current flowing through the short.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TLV320AIC24C | Layout and Grounding Guidelines for TLV320AIC2x |
| TLV320AIC24I | Layout and Grounding Guidelines for TLV320AIC2x |
| TLV320AIC24KC | Layout and Grounding Guidelines for TLV320AIC2x |
| TLV320AIC24KI | 8A,200V,GPP,INLINE BRIDGE RoHS Compliant: Yes |
| TLV320AIC25C | Layout and Grounding Guidelines for TLV320AIC2x |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TLV320AC57N | 制造商:TI 制造商全稱:Texas Instruments 功能描述:3-V VOICE-BAND AUDIO PROCESSORS VBAPE |
| TLV320AC57PT | 制造商:TI 制造商全稱:Texas Instruments 功能描述:3-V VOICE-BAND AUDIO PROCESSORS VBAPE |
| TLV320AD11A | 制造商:TI 制造商全稱:Texas Instruments 功能描述:3.3 V INTEGRATED ADSL OVER POTS CODEC |
| TLV320AD11APZ | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述: |
| TLV320AD12A | 制造商:TI 制造商全稱:Texas Instruments 功能描述:3.3-V INTEGRATED ADSL CODEC |
發(fā)布緊急采購，3分鐘左右您將得到回復。