- 您现在的位置：买卖IC网 > PDF目录10957 > PCM3168APAPR (Texas Instruments)IC 24-BIT AUDIO CODEC 64-HTQFP PDF资料下载
参数资料
| 型号： | PCM3168APAPR |
| 厂商： | Texas Instruments |
| 文件页数： | 22/68页 |
| 文件大小： | 0K |
| 描述： | IC 24-BIT AUDIO CODEC 64-HTQFP |
| 标准包装： | 1,000 |
| 类型： | 音频编解码器 |
| 数据接口： | 串行 |
| 分辨率（位）： | 24 b |
| ADC / DAC 数量： | 6 / 8 |
| 三角积分调变： | 是 |
| S/N 比，标准 ADC / DAC (db)： | 107 / 112（差分），104 / 112（单端） |
| 动态范围，标准 ADC / DAC (db)： | 107 / 112（差分），104 / 112（单端） |
| 电压 - 电源，模拟： | 4.5 V ~ 5.5 V |
| 电压 - 电源，数字： | 3 V ~ 3.6 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 64-TQFP 裸露焊盘 |
| 供应商设备封装： | 64-HTQFP（10x10） |
| 包装： | 带卷 (TR) |
| 其它名称： | 296-31710-2 PCM3168APAPR-ND |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页当前第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页
SYNCHRONIZATION WITH THE DIGITAL AUDIO SYSTEM
Stateof
Synchronization
Synchronous
Normal
ZERO
Normal
Synchronous
Asynchronous
DAC
VOUTX±
ADC
DOUTX
VCOMDA
(0.5VCCDA1)
Within1/f
S
t
ADCDLY3
t
DACDLY3
UndefinedData
HIGH-PASS FILTER (HPF)
www.ti.com ......................................................................................................................................................................................... SBAS452 – SEPTEMBER 2008
The PCM3168A and PCM3168A-Q1 operate under the system clock (SCKI) and the audio sampling rate
(LRCKAD/DA). Therefore, SCKI and LRCKAD/DA must have a specific relationship in slave mode. The
PCM3168A and PCM3168A-Q1 do not need a specific phase relationship between the audio interface clocks
(LRCKAD/DA, BCKAD/DA) and the system clock (SCKI), but does require a specific frequency relationship
(ratiometric) between LRCKAD/DA, BCKAD/DA, and SCKI.
If the relationship between SCKI and LRCKDA changes more than ±2 BCKDA clocks because of jitter, sampling
frequency change, etc., the DAC internal operation halts within 1/fS, and the analog output is forced into
VCOMDA (0.5 VCCDA1) until re-synchronization between SCKI, LRCKDA, and BCKDA is completed and then
tDACDLY3 passes. If the relationship between SCKI and LRCKAD changes more than ±2 BCKADs because of
jitter, sampling frequency change, etc., the ADC internal operation halts within 1/fS, and the digital output is
forced into a '0' code until re-synchronization between SCKI, LRCKAD, and BCKAD is completed and then
tADCDLY3 passes. In the event the change is less than ±2 BCKAD/DAs, re-synchronization does not occur, and
this analog/digital output control and discontinuity do not occur.
Figure 46 shows the DAC analog output and ADC digital output for loss of synchronization. During undefined
data periods, some noise may be generated in the audio signal. Also, the transition of normal to undefined data
and undefined (or zero) data to normal data creates a discontinuity of data on the analog and digital outputs,
which then may generate some noise in the audio signal.
Both ADC outputs (DOUTx) and DAC outputs (VOUTx) hold the previous state if the system clock halts, but the
asynchronous and re-synchronization processes would occur after the system clock resumes. Figure 46 shows
DAC outputs and ADC outputs for loss of synchronization.
Figure 46. DAC Outputs and ADC Outputs for Loss of Synchronization
Timing Requirements for Figure 46
SYMBOL
DESCRIPTION
SINGLE
DUAL
QUAD
UNIT
Period of
tDACDLY3
DAC delay synchronization detect to normal data
38
29
LRCKDA
Period of
tADCDLY3
ADC delay synchronization detect to normal data
60
N/A
LRCKAD
The PCM3168A and PCM3168A-Q1 include a high-pass filter (HPF) for all ADC channels in order to remove the
dc component of the digitized input signal. The filter is located at the output of the digital decimation filter. The –3
dB corner frequency for the HPF scales with the output sampling rate, where f–3 dB = 0.020 × fS/1000. When fS =
48 kHz, f–3 dB is 0.96 Hz. The HPF function can be disabled (bypassed) by the BYP bits in two channels.
Copyright 2008, Texas Instruments Incorporated
29
Product Folder Link(s): PCM3168A PCM3168A-Q1
相关PDF资料 |
PDF描述 |
|---|---|
| VE-B5L-IW-B1 | CONVERTER MOD DC/DC 28V 100W |
| VE-B54-IX-B1 | CONVERTER MOD DC/DC 48V 75W |
| VE-254-CU-S | CONVERTER MOD DC/DC 48V 200W |
| VE-24K-CU-S | CONVERTER MOD DC/DC 40V 200W |
| VI-BT0-IW-B1 | CONVERTER MOD DC/DC 5V 100W |
相关代理商/技术参数 |
参数描述 |
|---|---|
| PCM3168APAPRG4 | 功能描述:接口—CODEC 24B,96/192kHz,6ch-in 8ch-out Aud CODEC RoHS:否 制造商:Texas Instruments 类型: 分辨率: 转换速率:48 kSPs 接口类型:I2C ADC 数量:2 DAC 数量:4 工作电源电压:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:DSBGA-81 封装:Reel |
| PCM3168A-Q1 | 制造商:TI 制造商全称:Texas Instruments 功能描述:24-Bit, 96-kHz/192-kHz, 6-In/8-Out Audio Codec with Differential Input/Output |
| PCM3168ATPAPQ1 | 功能描述:接口—CODEC 24B,6-In/8-Out Audio CODEC RoHS:否 制造商:Texas Instruments 类型: 分辨率: 转换速率:48 kSPs 接口类型:I2C ADC 数量:2 DAC 数量:4 工作电源电压:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:DSBGA-81 封装:Reel |
| PCM3168ATPAPRQ1 | 功能描述:接口—CODEC 24B,6-In/8-Out Audio CODEC RoHS:否 制造商:Texas Instruments 类型: 分辨率: 转换速率:48 kSPs 接口类型:I2C ADC 数量:2 DAC 数量:4 工作电源电压:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:DSBGA-81 封装:Reel |
| PCM3168ATPAPRQ1G4 | 功能描述:接口—CODEC 24B,6-In/8-Out Audio CODEC RoHS:否 制造商:Texas Instruments 类型: 分辨率: 转换速率:48 kSPs 接口类型:I2C ADC 数量:2 DAC 数量:4 工作电源电压:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:DSBGA-81 封装:Reel |
发布紧急采购，3分钟左右您将得到回复。