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參數(shù)資料
| 型號(hào)： | PCM1726 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | Stereo Audio Digital-To-Analog Converter 16 Bits, 96kHz Sampling(16位96kHz采樣率立體聲音頻D\A轉(zhuǎn)換器) |
| 中文描述： | 立體聲音頻數(shù)字模擬轉(zhuǎn)換器16位，96kHz采樣（16位96kHz的采樣率立體聲音頻?\\阿轉(zhuǎn)換器） |
| 文件頁(yè)數(shù)： | 8/9頁(yè) |
| 文件大?。?/td> | 172K |
| 代理商： | PCM1726 |
8
PCM1726
1.0
0.5
0
–0.5
–1.0
d
20
Frequency (Hz)
100
1k
10k
24k
INTERNAL ANALOG FILTER FREQUENCY RESPONSE
(20Hz~24kHz, Expanded Scale)
10
5
0
–5
–10
–15
–20
–25
–30
–35
–40
–45
–50
–55
–60
10
100
1k
10k
100k
1M
10M
Frequency (Hz)
d
INTERNAL ANALOG FILTER FREQUENCY RESPONSE
(10Hz~10MHz)
FIGURE 7. Low Pass Filter Frequency Response.
FIGURE 8. Low Pass Filter Wideband Frequency Response.
FIGURE 9. 3rd-Order LPF.
The performance of the internal low pass filter from DC to
24kHz is shown in Figure 7. The higher frequency rolloff of
the filter is shown in Figure 8. If the user’s application has
the PCM1726 driving a wideband amplifier, it is recom-
mended to use an external low pass filter. A simple 3rd-
order filter is shown in Figure 9. For some applications, a
passive RC filter or 2nd-order filter may be adequate.
POWER SUPPLY
CONNECTIONS
PCM1726 has two power supply connections: digital (V
DD
)
and analog (V
CC
). Each connection also has a separate
ground. If the power supplies turn on at different times, there
is a possibility of a latch-up condition. To avoid this condi-
tion, it is recommended to have a common connection
between the digital and analog power supplies. If separate
supplies are used without a common connection, the delta
between the two supplies during ramp-up time must be less
than 0.6V.
An application circuit to avoid a latch-up condition is shown
in Figure 10.
DGND
AGND
V
DD
V
CC
Digital
Power Supply
Analog
Power Supply
FIGURE 10. Latch-up Prevention Circuit.
BYPASSING POWER SUPPLIES
The power supplies should be bypassed as close as possible
to the unit. It is also recommended to include a 0.1
μ
F ceramic
capacitor in parallel with the 10
μ
F tantalum bypass capacitor.
10k
10k
680pF
10k
1500pF
100pF
+
V
SIN
–
90
0
–90
–180
–270
–360
100
1k
10k
100k
1M
GAIN vs FREQUENCY
Frequency (Hz)
P
6
–14
–34
–54
–74
–94
G
Gain
Phase
OPA134
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PCM1726E | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| PCM1727 | 制造商:BB 制造商全稱:BB 功能描述:Stereo Audio DIGITAL-TO-ANALOG CONVERTER WITH PROGRAMMABLE DUAL PLL TM |
| PCM1727E | 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC Stereo DAC w/Prog Dual PLL RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量: 分辨率:16 bit 接口類型:I2S, UBS 轉(zhuǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-32 封裝:Reel |
| PCM1727E/2K | 功能描述:數(shù)模轉(zhuǎn)換器- DAC Stereo DAC w/Prog Dual PLL RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時(shí)間:1 us 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
| PCM1727E/2KG4 | 功能描述:數(shù)模轉(zhuǎn)換器- DAC Stereo DAC w/Prog Dual PLL RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時(shí)間:1 us 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
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