- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄367828 > PCM3052A 24-BIT, 96-kHz STEREO AUDIO CODEC WITH MICROPHONE AMPLIFIER, BIAS, MUXTIPLEXER, AND PGA PDF資料下載
參數(shù)資料
| 型號： | PCM3052A |
| 元件分類： | Codec |
| 英文描述： | 24-BIT, 96-kHz STEREO AUDIO CODEC WITH MICROPHONE AMPLIFIER, BIAS, MUXTIPLEXER, AND PGA |
| 中文描述： | 24位，96千赫立體聲音頻編解碼器麥克風(fēng)放大器，偏見，MUXTIPLEXER，和PGA |
| 文件頁數(shù)： | 29/45頁 |
| 文件大?。?/td> | 583K |
| 代理商： | PCM3052A |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁當(dāng)前第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁
www.ti.com
MULTIPLEXER AND PGA
The PCM3052A has built-in analog front-end circuit which is shown in
Figure 50
. Multiplexer input and PGA gain
are selected by mode control via the serial port, as shown in the
Serial Control Port for Mode Control
section.
The full-scale input voltage range is 0.1 Vrms to 1.5 Vrms, and it can be adjusted to an adequate level for
following the ADC sections.
V
IN
L and V
IN
R input resistance is maintained above 22 k
for all PGA gains. The input resistance value for each
gain can be calculated by
Equation 1
.
R
IN
(k , typical)
286
1
10
(PGAGain 20)
(1)
LIN+
S0125-01
V
IN
L
L-ch
1
PGA (4 dB to 20 dB)
R
R
LIN
2-ch MUX
RIN+
V
IN
R
R-ch
1
PGA (4 dB to 20 dB)
R
R
RIN
Mic Amp
ANALOG OUTPUTS FROM DAC
The PCM3052A has two independent output channels, V
L and V
R. These are unbalanced outputs, each
capable of driving 4 Vp-p (typical) into a 5-k
ac-coupled load. The internal output amplifiers for V
OUT
L and
V
OUT
R are biased to the dc common-mode (or bipolar zero) voltage, equal to 0.5 V
CC
2
The output amplifiers include an RC continuous-time filter, which helps to reduce the out-of-band noise energy
present at the DAC outputs due to the noise-shaping characteristics of the PCM3052A delta-sigma modulators.
The frequency response of this filter is shown in the typical performance curves. By itself, this filter is not
adequate to attenuate the out-of-band noise to an acceptable level for many applications. An external low-pass
filter is required to provide sufficient out-of-band noise rejection. Further discussion of DAC post-filter circuits is
provided in the PCM1742 data sheet (
SBAS176
).
VCOM OUTPUT FOR DAC
One unbuffered common-mode voltage output pin, V
COM
(pin 26), is brought out for decoupling purposes. This
pin is nominally biased to a dc voltage level equal to 0.5 V
CC
2. This pin can be used to bias external circuits.
Output resistance of this pin is 21 k
(typical).
DIGITAL AUDIO INTERFACE TRANSMITTER (DIT)
The PCM3052A employs S/PDIF output from DOUTS (pin 14). The data (I
2
S format only) from DAC digital data
input (DIN, pin 12) is encoded to S/PDIF format with preambles according to IEC958. S/PDIF output is controlled
through the serial control port. The output data type (linear PCM or AC-3) can be also selected through the serial
control port. For the output data type of AC-3, the word length is limited to 16 bits in the PCM3052A. Therefore,
bits 17 to 24 in the I
2
S format data must be set to LOW.
PCM3052A
SLES160–NOVEMBER 2005
Figure 50. Multiplexer and PGA
29
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PCM3052ARTF | 24-BIT, 96-kHz STEREO AUDIO CODEC WITH MICROPHONE AMPLIFIER, BIAS, MUXTIPLEXER, AND PGA |
| PCM3052ARTFG4 | 24-BIT, 96-kHz STEREO AUDIO CODEC WITH MICROPHONE AMPLIFIER, BIAS, MUXTIPLEXER, AND PGA |
| PCM3052ARTFR | 24-BIT, 96-kHz STEREO AUDIO CODEC WITH MICROPHONE AMPLIFIER, BIAS, MUXTIPLEXER, AND PGA |
| PCM3052ARTFRG4 | 24-BIT, 96-kHz STEREO AUDIO CODEC WITH MICROPHONE AMPLIFIER, BIAS, MUXTIPLEXER, AND PGA |
| PCM3501 | Low Voltage, Low Power, 16-Bit, Mono VOICE/MODEM CODEC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PCM3052ARTF | 功能描述:接口—CODEC 24B Stereo Audo Codec RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉(zhuǎn)換速率:48 kSPs 接口類型: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 |
| PCM3052ARTFG4 | 功能描述:接口—CODEC 24B Stereo Audo Codec RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉(zhuǎn)換速率:48 kSPs 接口類型: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 |
| PCM3052ARTFR | 功能描述:接口—CODEC 24B Stereo Audo Codec RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉(zhuǎn)換速率:48 kSPs 接口類型: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 |
| PCM3052ARTFRG4 | 功能描述:接口—CODEC 24B Stereo Audo Codec RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉(zhuǎn)換速率:48 kSPs 接口類型: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 |
| PCM3052RTFR | 制造商:Texas Instruments 功能描述: |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。