參數(shù)資料
型號： PCM1754DBQR
英文描述： 24-BIT, 192 kHz SAMPLING ENHANCED MULTI-LEVEL, DELTA-SIGMA, AUDIO DIGITAL-TO-ANALOG CONVERTER
中文描述： 24位192千赫采樣增強的多級Δ-Σ，音頻數(shù)字模擬轉(zhuǎn)換器
文件頁數(shù)： 16/33頁
文件大?。?/td> 309K
代理商： PCM1754DBQR
PCM1753
PCM1754
PCM1755
SLES092A – OCTOBER 2003 – REVISED AUGUST 2004
www.ti.com
16
ZERO FLAGS (PCM1753/55)
Zero-Detect Condition
Zero detection for either output channel is independent from the other channel. If the data for a given channel
remains at a 0 level for 1024 sample periods (or LRCK clock periods), a zero-detect condition exists for that
channel.
Zero Flag Outputs
If a zero-detect condition exists for one or more channels, the zero flag pins for those channels are set to a logic
1 state. There are zero flag pins for each channel, ZEROL (pin 12) and ZEROR (pin 11). These pins can be
used to operate external mute circuits, or used as status indicators for a microcontroller, audio signal processor,
or other digitally controlled function.
The active polarity of zero flag outputs can be inverted by setting the ZREV bit of control register 22 to 1. The
reset default is active-high output, or ZREV = 0.
The L-channel and R-channel common zero flag can be selected by setting the AZRO bit of control register
22 to 1. The reset default is independent zero flags for L-channel and R-channel, or AZRO = 0.
In the case of the PCM1755, ZEROL and ZEROR are open-drain outputs.
ZERO FLAG (PCM1754)
The PCM1754 has a ZERO flag pin, ZEROA (pin 11). ZEROA is the L-channel and R-channel common zero
flag pin. If the data for L-channel and R-channel remains at a 0 level for 1024 sampling periods (or LRCK clock
periods), ZEROA is set to a logic 1 state.
HARDWARE CONTROL (PCM1754)
The digital functions of the PCM1754 are capable of hardware control. Table 2 shows selectable formats,
Table 3 shows de-emphasis control, and Table 4 shows mute control.
Table 2. Data Format Select
FMT (PIN 15)
LOW
DATA FORMAT
16- to 24-bit, I
2
S format
HIGH
16-bit right-justified
Table 3. De-Emphasis Control
DEMP (PIN 13)
LOW
DE-EMPHASIS FUNCTION
44.1 kHz de-emphasis OFF
HIGH
44.1 kHz de-emphasis ON
Table 4. Mute Control
MUTE (PIN 14)
MUTE
LOW
Mute OFF
HIGH
Mute ON
OVERSAMPLING RATE CONTROL (PCM1754)
The PCM1754 automatically controls the oversampling rate of the delta-sigma D/A converters with the system
clock rate. The oversampling rate is set to 64
×
oversampling with every system clock and sampling frequency.
相關(guān)PDF資料
PDF描述
PCM1760 Multi-Bit Enhanced Noise Shaping 20-Bit ANALOG-TO-DIGITAL CONVERSION SYSTEM
PCM1760P Multi-Bit Enhanced Noise Shaping 20-Bit ANALOG-TO-DIGITAL CONVERSION SYSTEM
PCM1808 SINGLE-ENDED, ANALOG-INPUT 24-BIT, 96-kHz STEREO A/D CONVERTER
PCM1808PW SINGLE-ENDED, ANALOG-INPUT 24-BIT, 96-kHz STEREO A/D CONVERTER
PCM1808PWG4 SINGLE-ENDED, ANALOG-INPUT 24-BIT, 96-kHz STEREO A/D CONVERTER
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PCM1754DBQRG4 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC 24-Bit 192kHz Stereo Audio 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
PCM1754-Q1 制造商:TI 制造商全稱:Texas Instruments 功能描述:24-BIT 192-kHz SAMPLING ENHANCED MULTI-LEVEL DELTA-SIGMA AUDIO DIGITAL-TO-ANALOG CONVERTER
PCM1754TDBQRQ1 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC AC 106dB SNR 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
PCM1755 制造商:BB 制造商全稱:BB 功能描述:24-BIT, 192 kHz SAMPLING ENHANCED MULTI-LEVEL, DELTA-SIGMA, AUDIO DIGITAL-TO-ANALOG CONVERTER
PCM1755DBQ 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC PCM175x: 24-Bit Multi 192kHz Samp 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
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