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參數(shù)資料
| 型號： | PCM3060 |
| 元件分類： | Codec |
| 英文描述： | 24-BIT, 96/192-kHz ASYNCHRONOUS STEREO AUDIO CODEC |
| 中文描述： | 24位96/192-kHz異步立體聲音頻編解碼 |
| 文件頁數(shù)： | 23/45頁 |
| 文件大?。?/td> | 394K |
| 代理商： | PCM3060 |
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ANALOG INPUTS TO ADC
The PCM3060 has two independent input channels, V
L and V
R. These are single-ended (unbalanced)
inputs, each capable of 0.6-V
CC
Vpp input with 10-k
input resistance, typically.
ANALOG OUTPUTS FROM DAC
The PCM3060 has two independent output channels, V
L and V
R. These are differential, (balanced)
outputs, each capable of driving 0.8-V
CC
Vpp (1.6-Vpp in differential) typical with a 10-k
dc-coupled load. The
internal output amplifiers for V
OUT
L+, V
OUT
L– and V
OUT
R+, V
OUT
R– are biased to V
COM
, described as follows.
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 PCM3060 delta-sigma modulators.
The frequency response of this filter is shown in the typical performance curves. This filter is not enough to
attenuate the out-of-band noise to an acceptable level for many applications in general. An external low-pass
filter is used if further out-of-band noise rejection in required.
V
COM
OUTPUT
One unbuffered common voltage output pin, VCOM (pin 20) is brought out for decoupling purposes. This pin is
internally biased to a dc voltage level of 0.5 V
nominal, and is used as an internal common voltage and
reference voltage for the ADC and DAC. This pin can be used to bias an external circuit, but the load impedance
must be high enough for operation with the output resistance of this pin, which is 12.5 k
, typically.
OVERSAMPLING RATE CONTROL
The ove-sampling rate of ADC of PCM3060 is fixed at 64 f
S
, but the oversampling rate of DAC of PCM3060 is
one of 64 f
S
, 32 f
S
or 16 f
S
, and this is automatically selected by the ratio of system clock frequency and
sampling frequency. And it can be also set to double rate, i.e., one of 128 f
S
, 64 f
S
or 32 f
S
, through serial
control.
ZERO FLAGS
Zero-Detect Condition
Zero-Flag Outputs
PCM3060
SLAS533–MARCH 2007
V
OUT
X+, V
OUT
X– configuration can be changed to single-ended (unbalanced) output via a MODE pin setting or
serial mode control, and V
OUT
X+ is assigned as an output pin in single-ended mode.
For each DAC channel, the PCM3060 has a zero-detect circuit that recognizes zero detection when 1024
consecutive zeros have been sampled on DIN.
There are two zero-flag outputs, ZEROL and ZEROR. These pins can be used to operate external mute circuits,
or used as status indicators for a microcontroller, audio signal processor, etc. These pins can be programmed in
following two modes using the serial control port as described in the MODE CONTROL section.
DESCRIPTION
AZRO
ZEROL
ZEROR
0 (default)
1
L-ch zero detection
L-ch and R-ch zero detection
R-ch zero detection
L-ch and R-ch zero detection
For zero detection, these pins are set to HIGH (1) by default, but the polarity of the zero-flag outputs can be
inverted through the serial control port.
ZREV
0 (default)
1
DESCRIPTION
HIGH for zero detection
LOW for zero detection
23
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| PCM3060PW | 功能描述:接口—CODEC 24B 96/192kHz Asynchronous Stereo RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉換速率: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 安裝風格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel |
| PCM3060PW | 制造商:Texas Instruments 功能描述:LEADED PROCESS COMPATIBLE:YES |
| PCM3060PWG4 | 功能描述:接口—CODEC 24bit 96/192kHz Asynch St Aud Codec RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉換速率: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 安裝風格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel |
| PCM3060PWR | 功能描述:接口—CODEC 24B 96/192kHz Asynchronous Stereo RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉換速率: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 安裝風格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel |
| PCM3060PWRG4 | 功能描述:接口—CODEC 24bit 96/192kHz Asynch St Aud Codec RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉換速率: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 安裝風格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel |
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