參數(shù)資料
型號(hào)： 6PAIC3106IRGZRQ1
廠商： Texas Instruments
文件頁(yè)數(shù)： 46/103頁(yè)
文件大?。?/td> 0K
描述： IC AUDIO CODEC STEREO 48-QFN
標(biāo)準(zhǔn)包裝： 1
類型： 立體聲音頻
數(shù)據(jù)接口： 串行
分辨率（位）： 24 b
ADC / DAC 數(shù)量： 2 / 2
三角積分調(diào)變： 是
S/N 比，標(biāo)準(zhǔn) ADC / DAC (db)： 92 / 102（差分），92 / 95（單端）
動(dòng)態(tài)范圍，標(biāo)準(zhǔn) ADC / DAC (db)： 91 / 99（差分），91 / 92（單端）
電壓 - 電源，模擬： 2.7 V ~ 3.6 V
電壓 - 電源，數(shù)字： 1.1 V ~ 3.6 V
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 48-VFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝： 48-VQFN 裸露焊盤（7x7）
包裝： 標(biāo)準(zhǔn)包裝
產(chǎn)品目錄頁(yè)面： 1077 (CN2011-ZH PDF)
其它名稱： 296-25253-6
SLAS663B – AUGUST 2009 – REVISED OCTOBER 2012
When these output drivers are powered down, they can be placed into a variety of output conditions based on
register programming. If lowest power operation is desired, then the outputs can be placed into a 3-state
condition, and all power to the output stage is removed. However, this generally results in the output nodes
drifting to rest near the upper or lower analog supply, due to small leakage currents at the pins. This then results
in a longer delay requirement to avoid output artifacts during driver power-on. In order to reduce this required
power-on delay, the TLV320AIC3106 includes an option for the output pins of the drivers to be weakly driven to
the VCM level they would normally rest at when powered with no signal applied. This output VCM level is
determined by an internal bandgap voltage reference, and thus results in extra power dissipation when the
drivers are in powerdown. However, this option provides the fastest method for transitioning the drivers from
powerdown to full power operation without any output artifact introduced.
The device includes a further option that falls between the other two – while it requires less power drawn while
the output drivers are in powerdown, it also takes a slightly longer delay to power-up without artifact than if the
bandgap reference is kept alive. In this alternate mode, the powered-down output driver pin is weakly driven to a
voltage of approximately half the DRVDD1/2 supply level using an internal voltage divider. This voltage will not
match the actual VCM of a fully powered driver, but due to the output voltage being close to its final value, a
much shorter power-up delay time setting can be used and still avoid any audible output artifacts. These output
voltage options are controlled in Page-0/Reg-42.
The high power output drivers can also be programmed to power up first with the output level control in a highly
attenuated state, then the output driver will automatically slowly reduce the output attenuation to reach the
desired output level setting programmed. This capability is enabled by default but can be enabled in Page-0/Reg-
40.
SHORT CIRCUIT OUTPUT PROTECTION
The TLV320AIC3106 includes programmable short-circuit protection for the high power output drivers, for
maximum flexibility in a given application. By default, if these output drivers are shorted, they will automatically
limit the maximum amount of current that can be sourced to or sunk from a load, thereby protecting the device
from an over-current condition. In this mode, the user can read Page-0/Reg-95 to determine whether the part is
in short-circuit protection or not, and then decide whether to program the device to power down the output
drivers. However, the device includes further capability to automatically power down an output driver whenever it
does into short-circuit protection, without requiring intervention from the user. In this case, the output driver will
stay in a power down condition until the user specifically programs it to power down and then power back up
again, to clear the short-circuit flag.
JACK/HEADSET DETECTION
The TLV320AIC3106 includes extensive capability to monitor a headphone, microphone, or headset jack,
determine if a plug has been inserted into the jack, and then determine what type of headset/headphone is wired
to the plug. Figure 37 shows one configuration of the device that enables detection and determination of headset
type when a pseudo-differential (capless) stereo headphone output configuration is used. The registers used for
this function are page 0, registers 14, 96, 97, and 13. The type of headset detected can be read back from page
0, register 13. Note that for best results, it is recommended to select a MICBIAS value as high as possible, and
to program the output driver common-mode level at a 1.35-V or 1.5-V level.
Copyright 2009–2012, Texas Instruments Incorporated
47
Product Folder Links: TLV320AIC3106-Q1
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