參數(shù)資料
型號(hào): TLV320AIC25I
廠商: Texas Instruments, Inc.
英文描述: Layout and Grounding Guidelines for TLV320AIC2x
中文描述: 為TLV320AIC2x布局和接地指南
文件頁(yè)數(shù): 22/46頁(yè)
文件大?。?/td> 452K
代理商: TLV320AIC25I
SLAS428 AUGUST 2004
www.ti.com
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PO Output Power mW
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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)
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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
TLV320AIC11PFB Labels; External Height:0.275"; External Width:1"; Label Material:Metalized Polyester
TLV320AIC27PFB STEREO AUDIO CODEC
TMPR28051-3-SL5 Paired Cable; Number of Conductors:12; Conductor Size AWG:24; No. Strands x Strand Size:7 x 32; Jacket Material:Polyolefin; Number of Pairs:6; Impedance:100ohm; Voltage Nom.:300V RoHS Compliant: Yes
TMPR28051 TMPR28051 STS-1/AU-3 (STM-0) Mapper Device Advisory for Version 5 of the Device
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