參數(shù)資料
型號(hào)： PCM4222_07
英文描述： High-Performance, Two-Channel, 24-Bit, 216kHz Sampling Multi-Bit Delta-Sigma Analog-to-Digital Converter
中文描述： 高性能，雙通道，24位，216kHz的采樣多位Δ-Σ模擬到數(shù)字轉(zhuǎn)換器
文件頁(yè)數(shù)： 26/40頁(yè)
文件大小： 609K
代理商： PCM4222_07
www.ti.com
Left
Left
Right
DSD
Engine
DSDCLK
DSDL
DSDEN
DSDMODE
DSDR
Right
Multi-Bit
Delta-Signma
Modulator
Digital
Decimation
Filter
(Down by 2)
6-bits/ch
128f
S
6-bits/ch
64f
S
MULTI-BIT MODULATOR (MBM) OUTPUT OPERATION
The PCM4222 supports direct data output from the multi-bit delta sigma modulators. This mode allows the use
of external, user-defined digital filtering and/or processing.
Figure 47
illustrates the functional concept for the
multi-bit modulator (or MBM) output mode, as well as the output data format.
PCM4222
SBAS399A–OCTOBER 2006–REVISED MARCH 2007
Table 9. DSD Output Rate Selection
DSDMODE (pin 24)
LO
HI
DSD OUTPUT RATE
64x Oversampled Data
128x Oversampled Data
When driving capacitive loads greater than 30pF with the DSD data and clock outputs, it is recommended that
external buffers be utilized to ensure data and clock integrity at the receiving device(s).
Details regarding dynamic performance for the DSD output are shown in the
Electrical Characteristics
table of
this datasheet.
Figure 3
and the
Electrical Characteristics
: Audio Interface Timing table detail the timing
parameters for the DSD output.
Figure 46. Simplified Block Diagram for DSD Mode Operation
The MBM output mode is enabled or disabled using the MODEN input (pin 23).
Table 10
summarizes the
operation of the MODEN pin. When MBM mode is enabled, both the PCM and DSD output modes are disabled,
and multiple pins are re-mapped.
Table 11
summarizes the pin mapping for MBM mode, compared to the PCM
and DSD output modes. The PCMEN input (pin 16) must be forced high when the multi-bit output is enabled;
forcing this input high enables both the left and right channel multi-bit output data.
26
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PCM4222EVM 功能描述:音頻 IC 開發(fā)工具 PCM4222 Evaluation Module RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評(píng)估:TAS5614L 工作電源電壓:12 V to 38 V
PCM4222EVM 制造商:Texas Instruments 功能描述:DEVELOPMENT TOOL
PCM4222PFB 功能描述:音頻模/數(shù)轉(zhuǎn)換器 IC 24-Bit/216kHz 124dB RoHS:否 制造商:Wolfson Microelectronics 轉(zhuǎn)換速率: 分辨率: ADC 輸入端數(shù)量: 工作電源電壓: 最大工作溫度: 最小工作溫度: 安裝風(fēng)格: 封裝 / 箱體: 封裝:
PCM4222PFBG4 功能描述:音頻模/數(shù)轉(zhuǎn)換器 IC 24B/216kHz 124dB Stereo Audio ADC RoHS:否 制造商:Wolfson Microelectronics 轉(zhuǎn)換速率: 分辨率: ADC 輸入端數(shù)量: 工作電源電壓: 最大工作溫度: 最小工作溫度: 安裝風(fēng)格: 封裝 / 箱體: 封裝:
PCM4222PFBR 功能描述:音頻模/數(shù)轉(zhuǎn)換器 IC 24-Bit/216kHz 124dB RoHS:否 制造商:Wolfson Microelectronics 轉(zhuǎn)換速率: 分辨率: ADC 輸入端數(shù)量: 工作電源電壓: 最大工作溫度: 最小工作溫度: 安裝風(fēng)格: 封裝 / 箱體: 封裝:
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