- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄382383 > PCM1716 24-Bit, 96kHz Sampling CMOS Delta-Sigma Stereo Audio DIGITAL-TO-ANALOG CONVERTER PDF資料下載
參數(shù)資料
| 型號： | PCM1716 |
| 英文描述： | 24-Bit, 96kHz Sampling CMOS Delta-Sigma Stereo Audio DIGITAL-TO-ANALOG CONVERTER |
| 中文描述： | 24位，96kHz采樣的CMOSΔ-Σ立體聲音頻數(shù)字模擬轉換器 |
| 文件頁數(shù)： | 6/14頁 |
| 文件大?。?/td> | 222K |
| 代理商： | PCM1716 |
6
PCM1716
SYSTEM CLOCK
The system clock for PCM1716 must be either 256f
S
, 384f
S
,
512f
S
or 768f
S
, where f
S
is the audio sampling frequency
(typically 32kHz, 44.1kHz, 48kHz, or 96kHz). But 768f
S
at
96kHz is not accepted.
The system clock can be either a crystal oscillator placed
between XTI (pin 5) and XTO (pin 6), or an external clock
input to XTI. If an external system clock is used, XTO is
open (floating). Figure 1 illustrates the typical system clock
connections.
PCM1716 has a system clock detection circuit which auto-
matically senses if the system clock is operating at 256f
S
~
768f
S
. The system clock should be synchronized with LRCIN
(pin 1) clock. LRCIN (left-right clock) operates at the sam-
pling frequency f
S
. In the event these clocks are not synchro-
nized, PCM1716 can compensate for the phase difference
internally. If the phase difference between left-right and
system clocks is greater than 6-bit clocks (BCKIN), the
synchronization is performed internally. While the synchro-
nization is processing, the analog output is forced to a DC
level at bipolar zero. The synchronization typically occurs in
less than 1 cycle of LRCIN.
SYSTEM CLOCK FREQUENCY - MHz
SAMPLING RATE FREQUENCY (f
S
) - LRCIN
256f
S
384f
S
512f
S
768f
S
32kHz
8.1920
12.2880
16.3840
24.5760
44.1kHz
11.2896
16.9340
22.5792
33.8688
(1)
48kHz
12.2880
18.4320
24.5760
36.8640
(1)
96kHz
24.5760
36.8640
(1)
49.1520
(1)
—
NOTE: (1) The Internal Crystal oscillator frequency cannot be larger than 24.576MHz.
TABLE I. Typical System Clock Frequency.
Typical input system clock frequencies to the PCM1716 are
shown in Table I, also, external input clock timing require-
ments are shown in Figure 2.
FIGURE 1. System Clock Connection.
FIGURE 2. XTI Clock Timing.
t
SCKH
System Clock Pulse Width High t
SCKIH
: 7ns MIN
System Clock Pulse Width Low t
SCKIL
: 7ns MIN
t
SCKL
2.0V
0.8V
“H”
“L”
XTI
DATA INTERFACE FORMATS
Digital audio data is interfaced to PCM1716 on pins 1, 2,
and 3, LRCIN (left-right clock), DIN (data input) and
BCKIN (bit clock). PCM1716 can accept both standard, I
2
S,
and left justified data formats.
Figure 3 illustrates acceptable input data formats. Figure 4
shows required timing specification for digital audio data.
Reset
PCM1716 has both internal power-on reset circuit and the
RST pin (pin 22) which accepts an external forced reset by
RST = LOW. For internal power on reset, initialize (reset) is
done automatically at power on V
DD
>2.2V (typ). During
internal reset = LOW, the output of the DAC is invalid and
the analog outputs are forced to V
CC
/2. Figure 5 illustrates
the timing of the internal power on reset.
PCM1716 accepts an external forced reset when RST = L.
When RST = L, the output of the DAC is invalid and the
analog outputs are forced to V
CC
/2 after internal initialization
(1024 system clocks count after RST = H.) Figure 6 illustrates
the timing of the RST pin.
Zero Out (pin 21)
If the input data is continuously zero for 65536 cycles of
BCK, an internal FET is switched to “ON”. The drain of the
internal FET is the zero-pin, it will enable “wired-or” with
external circuit. This zero detect function is available in both
software mode and hardware mode.
System Clock
(256/384/
512/768f
S
)
Externl Clock Input
CLKO
XTI
XTO
4
5
6
PCM1716
System Clock
Buffer Out
Crystal Resonator Oscillation
CLKO
XTI
XTO
4
5
6
PCM1716
XTAL
C
1
C
2
C
1
C
2
: 10pF ~ 30pF
Buffer
相關PDF資料 |
PDF描述 |
|---|---|
| PCM1717 | Stereo Audio DIGITAL-TO-ANALOG CONVERTER |
| PCM1717E | Stereo Audio DIGITAL-TO-ANALOG CONVERTER |
| PCM1718 | Stereo Audio DIGITAL-TO-ANALOG CONVERTER |
| PCM1718E | Stereo Audio DIGITAL-TO-ANALOG CONVERTER |
| PCM1719 | Stereo Audio DIGITAL-TO-ANALOG CONVERTER |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| PCM1716E | 功能描述:音頻數(shù)/模轉換器 IC 24-Bit 96kHz Smplg CMOS D-S Stereo DAC RoHS:否 制造商:Texas Instruments 轉換器數(shù)量: 分辨率:16 bit 接口類型:I2S, UBS 轉換速率: 信噪比:98 dB 工作電源電壓:5 V DAC 輸出端數(shù)量:2 工作溫度范圍:- 25 C to + 85 C 電源電流:23 mA 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-32 封裝:Reel |
| PCM1716E | 制造商:Texas Instruments 功能描述:24BIT DAC CMOS STEREO SMD 1716 |
| PCM1716E/2K | 功能描述:音頻數(shù)/模轉換器 IC 24-Bit 96kHz Smplg CMOS D-S Stereo DAC RoHS:否 制造商:Texas Instruments 轉換器數(shù)量: 分辨率:16 bit 接口類型:I2S, UBS 轉換速率: 信噪比:98 dB 工作電源電壓:5 V DAC 輸出端數(shù)量:2 工作溫度范圍:- 25 C to + 85 C 電源電流:23 mA 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-32 封裝:Reel |
| PCM1716E/2KG4 | 功能描述:音頻數(shù)/模轉換器 IC 24-Bit 96kHz Smplg CMOS D-S Stereo DAC RoHS:否 制造商:Texas Instruments 轉換器數(shù)量: 分辨率:16 bit 接口類型:I2S, UBS 轉換速率: 信噪比:98 dB 工作電源電壓:5 V DAC 輸出端數(shù)量:2 工作溫度范圍:- 25 C to + 85 C 電源電流:23 mA 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-32 封裝:Reel |
| PCM1716E-3 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
發(fā)布緊急采購，3分鐘左右您將得到回復。