參數(shù)資料
型號： PCM1792DB
廠商： Texas Instruments
文件頁數(shù)： 9/61頁
文件大?。?/td> 0K
描述： IC 24BIT AUDIO STEREO DAC 28SSOP
產(chǎn)品培訓(xùn)模塊： Data Converter Basics
標(biāo)準(zhǔn)包裝： 47
位數(shù)： 24
數(shù)據(jù)接口： I²C，串行，SPI?
轉(zhuǎn)換器數(shù)目： 2
電壓電源： 模擬和數(shù)字
工作溫度： -25°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 28-SSOP（0.209"，5.30mm 寬）
供應(yīng)商設(shè)備封裝： 28-SSOP
包裝： 管件
輸出數(shù)目和類型： 2 電壓，單極
采樣率（每秒）： 200k
產(chǎn)品目錄頁面： 903 (CN2011-ZH PDF)
其它名稱： 296-15313-5
PCM1792
SLES069B MARCH 2003 REVISED NOVEMBER 2006
www.ti.com
17
AUDIO DATA INTERFACE
Audio Serial Interface
The audio interface port is a 3-wire serial port. It includes LRCK (pin 4), BCK (pin 6), and DATA (pin 5). BCK is the
serial audio bit clock, and it is used to clock the serial data present on DATA into the serial shift register of the audio
interface. Serial data is clocked into the PCM1792 on the rising edge of BCK. LRCK is the serial audio left/right word
clock.
The PCM1792 requires the synchronization of LRCK and system clock, but does not need a specific phase relation
between LRCK and system clock.
If the relationship between LRCK and system clock changes more than
±6 BCK, internal operation is initialized within
1/fS and analog outputs are forced to the bipolar zero level until resynchronization between LRCK and system clock
is completed.
PCM Audio Data Formats and Timing
The PCM1792 supports industry-standard audio data formats, including standard right-justified, I2S, and
left-justified. The data formats are shown in Figure 28. Data formats are selected using the format bits, FMT[2:0],
in control register 18. The default data format is 24-bit I2S. All formats require binary 2s complement, MSB-first audio
data. Figure 27 shows a detailed timing diagram for the serial audio interface.
DATA
t(BCH)
50% of VDD
BCK
LRCK
t(BCL)
t(LB)
t(BCY)
t(DS)
t(DH)
50% of VDD
t(BL)
PARAMETERS
MIN
MAX
UNITS
t(BCY)
BCK pulse cycle time
70
ns
t(BCL)
BCK pulse duration, LOW
30
ns
t(BCH)
BCK pulse duration, HIGH
30
ns
t(BL)
BCK rising edge to LRCK edge
10
ns
t(LB)
LRCK edge to BCK rising edge
10
ns
t(DS)
DATA setup time
10
ns
t(DH)
DATA hold time
10
ns
—
LRCK clock duty
50%
± 2 bit clocks
Figure 27. Timing of Audio Interface
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PCM1792DB 制造商:Texas Instruments 功能描述:24BIT AUDIO DAC SMD 1792 SSOP28
PCM1792DBG4 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC 24-Bit 192kHz Smplng Adv Stg Stereo DAC RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量: 分辨率:16 bit 接口類型:I2S, UBS 轉(zhuǎn)換速率: 信噪比:98 dB 工作電源電壓:5 V DAC 輸出端數(shù)量:2 工作溫度范圍:- 25 C to + 85 C 電源電流:23 mA 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-32 封裝:Reel
PCM1792DBR 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC 24-Bit 192kHz Smplng Adv Stg Stereo DAC RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量: 分辨率:16 bit 接口類型:I2S, UBS 轉(zhuǎn)換速率: 信噪比:98 dB 工作電源電壓:5 V DAC 輸出端數(shù)量:2 工作溫度范圍:- 25 C to + 85 C 電源電流:23 mA 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-32 封裝:Reel
PCM1792DBRG4 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC 24-Bit 192kHz Smplng Adv Stg Stereo DAC RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量: 分辨率:16 bit 接口類型:I2S, UBS 轉(zhuǎn)換速率: 信噪比:98 dB 工作電源電壓:5 V DAC 輸出端數(shù)量:2 工作溫度范圍:- 25 C to + 85 C 電源電流:23 mA 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-32 封裝:Reel
PCM1793 制造商:TI 制造商全稱:Texas Instruments 功能描述:24 BIT 192KHZ SAMPLING ADVANCED SEGMENT AUDIO STEREO DIGITAL TO ANALOG CONVERTER
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