參數(shù)資料
型號(hào)： PCM3794ARHBT
元件分類(lèi)： Codec
英文描述： 16-Bit, Low-Power Stereo Audio CODEC With Microphone Bias, Headphone, and Digital Speaker Amplifier
中文描述： 16位，低功耗立體聲音頻編解碼器麥克風(fēng)偏置，耳機(jī)，揚(yáng)聲器放大器和數(shù)字
文件頁(yè)數(shù)： 22/68頁(yè)
文件大小： 982K
代理商： PCM3794ARHBT
www.ti.com
Power-Supply Current
PCM3793A
PCM3794A
SLAS529A–JANUARY 2007–REVISED FEBRUARY 2007
Table 4. Recommended Power-Off Sequence
REGISTER
SETTINGS
447Fh
457Fh
5132h
5811h
49FCh
5200h
5A00h
4A00h
–
49E0h
4800h
4900h
–
STEP
NOTE
1
2
3
4
5
6
7
8
9
DAC L-ch digital soft-mute enable
(1)
DAC R-ch digital soft-mute enable
(1)
ADC L-ch/R-ch digital soft-mute enable, ADC audio interface format (left-justified)
(2)
Analog mixer input (SW2, SW5) select
Headphone amplifier (HPL, HPR, HPC) power up
(3)(4)
Analog front end (ADL, ADR, D2S, MCB, PG1, 2, 5, 6) power down
PG1, PG2 gain control (0 dB)
V
COM
power down
Wait time (750 ms)
(5)
Headphone amplifier (HPL, HPR, HPC) power down, speaker amplifier (SPL, SPR) power down
Analog mixer (MXL, MXR) power down
DAC (DAL, DAR) and analog bias power down
Turn off all power supplies.
(6)
10
11
12
13
(1)
(2)
(3)
(4)
(5)
Any level is acceptable for volume or attenuation.
Audio interface format should be set to match the DSP or decoder in the application.
The PCM3794A has no speaker amplifier.
The headphone amplifier must be operating during the power-off sequence.
PCM3793A requires time for V
to reach the ground level from the common level. The wait time allowed depends on the settings of
register 125 PTM[1:0], RES[4:0]. The default setting is 750 ms for V
= 4.7 μF.
Power supply sequencing is not required. It is recommended to turn off all power supplies after setting the registers with the system
clock input.
(6)
The current consumption of the PCM3793A/94A depends on power up/down status of each circuit module. In
order to reduce the power consumption, disabling each module is recommended when it is not used in an
application or operation.
Table 5
shows the current consumption in some states.
22
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PCM3794ARHBTG4 功能描述:接口—CODEC 16B Low Pwr Stereo Audio CODEC RoHS:否 制造商:Texas Instruments 類(lèi)型: 分辨率: 轉(zhuǎn)換速率:48 kSPs 接口類(lèi)型:I2C ADC 數(shù)量:2 DAC 數(shù)量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel
PCM3794RHB 制造商:Texas Instruments 功能描述:
PCM3794RHBR 功能描述:接口—CODEC Very Low-Pwr Stereo CODEC RoHS:否 制造商:Texas Instruments 類(lèi)型: 分辨率: 轉(zhuǎn)換速率:48 kSPs 接口類(lèi)型:I2C ADC 數(shù)量:2 DAC 數(shù)量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel
PCM3794RHBRG4 功能描述:接口—CODEC Very Low-Pwr Stereo CODEC RoHS:否 制造商:Texas Instruments 類(lèi)型: 分辨率: 轉(zhuǎn)換速率:48 kSPs 接口類(lèi)型:I2C ADC 數(shù)量:2 DAC 數(shù)量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel
PCM3794RHBT 功能描述:接口—CODEC Very Low-Pwr Stereo CODEC RoHS:否 制造商:Texas Instruments 類(lèi)型: 分辨率: 轉(zhuǎn)換速率:48 kSPs 接口類(lèi)型:I2C ADC 數(shù)量:2 DAC 數(shù)量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel
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