- 您現在的位置：買賣IC網 > PDF目錄382384 > PCM1807PW Single-Ended, Analog-Input 24-Bit, 96-kHz Stereo A/D Converter PDF資料下載
參數資料
| 型號： | PCM1807PW |
| 英文描述： | Single-Ended, Analog-Input 24-Bit, 96-kHz Stereo A/D Converter |
| 中文描述： | 單端模擬輸入24位，96千赫立體聲A / D轉換器 |
| 文件頁數： | 11/29頁 |
| 文件大小： | 426K |
| 代理商： | PCM1807PW |
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頁當前第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頁第29頁
www.ti.com
SYSTEM CLOCK
The PCM1807 supports 256 f
S
, 384 f
S
and 512 f
S
as system clock, where f
S
is the audio sampling frequency. The
system clock must be supplied on SCKI (pin 6).
SCKI
0.8 V
SCKI
2 V
t
w(SCKL)
t
w(SCKH)
T0005B07
FADE-IN AND FADE-OUT FUNCTIONS
The PCM1807 has fade-in and fade-out functions on DOUT (pin 9) to avoid pop noise, and the functions come
into operation in some cases as described in several following sections. The level changes from 0 dB to mute or
mute to 0 dB are performed using calculated pseudo S-shaped characteristics with zero-cross detection.
Because of the zero-cross detection, the time needed for the fade in and fade out depends on the analog input
frequency (f
). It takes 48/f
until processing is completed. If there is no zero cross during 8192/f
, DOUT is
faded in or out by force during 48/f
S
(TIME OUT).
Figure 18
illustrates the fade-in and fade-out operation
processing.
PCM1807
SLES147–SEPTEMBER 2005
The PCM1807 has a system clock detection circuit which automatically senses if the system clock is operating at
256 f
S
, 384 f
S
, or 512 f
S
in slave mode. In master mode, the system clock frequency must be controlled through
the serial control port, which uses MD (pin 10), MC (pin 11), and MS (pin 12). The system clock is divided down
automatically to generate frequencies of 128 f
S
and 64 f
S
, which are used to operate the digital filter and the
delta-sigma modulator, respectively.
Table 1
shows some typical relationships between sampling frequency and system clock frequency, and
Figure 17
shows system clock timing.
Table 1. Sampling Frequency and System Clock Frequency
SAMPLING FREQUENCY (kHz)
SYSTEM CLOCK FREQUENCY (f
SCLK
) (MHz)
384 f
S
6.144
12.288
16.9344
18.432
24.576
33.8688
36.864
256 f
S
4.096
8.192
11.2896
12.288
16.384
22.5792
24.576
512 f
S
8.192
16.384
22.5792
24.576
32.768
45.1584
49.152
16
32
44.1
48
64
88.2
96
SYMBOL
t
w(SCKH)
t
w(SCKL)
PARAMETER
MIN
8
8
MAX
UNIT
ns
ns
System clock pulse duration, HIGH
System clock pulse duration, LOW
Figure 17. System Clock Timing
11
相關PDF資料 |
PDF描述 |
|---|---|
| PCM1807PWR | Single-Ended, Analog-Input 24-Bit, 96-kHz Stereo A/D Converter |
| PCM1807 | Single-Ended, Analog-Input 24-Bit, 96-kHz Stereo A/D Converter |
| PCM1851PJTR | 24-BIT, 96-kHz STEREO A/D CONVERTER WITH 6 X 2-CHANNEL MUX AND PGA |
| PCM1850PJT | 24-BIT, 96-kHz STEREO A/D CONVERTER WITH 6 X 2-CHANNEL MUX AND PGA |
| PCM1850PJTR | 24-BIT, 96-kHz STEREO A/D CONVERTER WITH 6 X 2-CHANNEL MUX AND PGA |
相關代理商/技術參數 |
參數描述 |
|---|---|
| PCM1807PW | 制造商:Texas Instruments 功能描述:IC ADC STER 24BIT 96KHZ 14-TSSOP 制造商:Texas Instruments 功能描述:IC, ADC STER 24BIT 96KHZ 14-TSSOP 制造商:Texas Instruments 功能描述:IC, ADC STER 24BIT 96KHZ 14-TSSOP; Resolution (Bits):24bit; Sampling Rate:96kSPS; Supply Voltage Type:Single; Supply Voltage Min:4.5V; Supply Voltage Max:5.5V; Supply Current:10.2mA; Digital IC Case Style:TSSOP; No. of Pins:14; Input;RoHS Compliant: Yes |
| PCM1807PWG4 | 功能描述:音頻模/數轉換器 IC 24-bit 96kHz Stereo Audio DAC RoHS:否 制造商:Wolfson Microelectronics 轉換速率: 分辨率: ADC 輸入端數量: 工作電源電壓: 最大工作溫度: 最小工作溫度: 安裝風格: 封裝 / 箱體: 封裝: |
| PCM1807PWR | 功能描述:音頻模/數轉換器 IC 24-bit 96kHz Stereo Audio DAC RoHS:否 制造商:Wolfson Microelectronics 轉換速率: 分辨率: ADC 輸入端數量: 工作電源電壓: 最大工作溫度: 最小工作溫度: 安裝風格: 封裝 / 箱體: 封裝: |
| PCM1807PWRG4 | 功能描述:音頻模/數轉換器 IC 24-bit 96kHz Stereo Audio DAC RoHS:否 制造商:Wolfson Microelectronics 轉換速率: 分辨率: ADC 輸入端數量: 工作電源電壓: 最大工作溫度: 最小工作溫度: 安裝風格: 封裝 / 箱體: 封裝: |
| PCM1808PW | 功能描述:音頻模/數轉換器 IC Sgl-ended Ana Input 24B 96kHz Stereo ADC RoHS:否 制造商:Wolfson Microelectronics 轉換速率: 分辨率: ADC 輸入端數量: 工作電源電壓: 最大工作溫度: 最小工作溫度: 安裝風格: 封裝 / 箱體: 封裝: |
發布緊急采購，3分鐘左右您將得到回復。