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參數(shù)資料
| 型號： | DAC7614UB |
| 英文描述： | DB9 F/F SERIAL CABLE 10FT. |
| 中文描述： | 四，串行輸入，12位電壓輸出數(shù)字模擬轉(zhuǎn)換器 |
| 文件頁數(shù)： | 12/12頁 |
| 文件大?。?/td> | 483K |
| 代理商： | DAC7614UB |
12
DAC7614
LAYOUT
A precision analog component requires careful layout, ad-
equate bypassing, and clean, well-regulated power supplies.
As the DAC7614 offers single-supply operation, it will often
be used in close proximity with digital logic, microcontrollers,
microprocessors, and digital signal processors. The more
digital logic present in the design and the higher the switch-
ing speed, the more difficult it will be to achieve good
performance from the converter.
Because the DAC7614 has a single ground pin, all return
currents, including digital and analog return currents, must
flow through the GND pin. Ideally, GND would be con-
nected directly to an analog ground plane. This plane would
be separate from the ground connection for the digital
components until they were connected at the power entry
point of the system (see Figure 4).
The power applied to V
DD
(as well as V
SS
, if not grounded)
should be well regulated and low noise. Switching power
supplies and DC/DC converters will often have high-fre-
quency glitches or spikes riding on the output voltage. In
addition, digital components can create similar high-fre-
quency spikes as their internal logic switches states. This
noise can easily couple into the DAC output voltage through
various paths between the power connections and analog
output.
As with the GND connection, V
DD
should be connected to
a +5V power supply plane or trace that is separate from the
connection for digital logic until they are connected at the
power entry point. In addition, the 1
μ
F to 10
μ
F and 0.1
μ
F
capacitors shown in Figure 4 are strongly recommended. In
some situations, additional bypassing may be required, such
as a 100
μ
F electrolytic capacitor or even a “Pi” filter made
up of inductors and capacitors—all designed to essentially
lowpass filter the +5V supply, removing the high frequency
noise (see Figure 4).
FIGURE 4. Suggested Power and Ground Connections for a DAC7614 Sharing a +5V Supply with a Digital System.
+5V
Power Supply
Optional
Digital Circuits
DAC7614
V
DD
Other
Analog
Components
+5V
100μF
1μF to
10μF
Ground
+5V
Ground
GND
0.1μF
+
+
相關(guān)PDF資料 |
PDF描述 |
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| DAC7614EB | Quad, Serial Input, 12-Bit, Voltage Output DIGITAL-TO-ANALOG CONVERTER |
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| DAC7614E | Single Supply RS232C Line Driver/Receiver(?????μ?o?RS232C ?o?????????¨???2???2??????) |
| DAC7614P | Single Supply RS232C Line Driver/Receiver(?????μ?o?RS232C ?o?????????¨???2???2??????) |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DAC7614UB | 制造商:Texas Instruments 功能描述:IC 12BIT DAC QUAD 89KHZ 16SOIC 制造商:Texas Instruments 功能描述:IC, 12BIT DAC, QUAD, 89KHZ, 16SOIC 制造商:Texas Instruments 功能描述:IC, 12BIT DAC, QUAD, 89KHZ, 16SOIC; Resolution (Bits):12bit; Sampling Rate:89kSPS; Input Channel Type:Serial; Supply Voltage Range: 4.75V to 5.25V; Digital IC Case Style:SOIC; No. of Pins:16; Data Interface:Serial, SPI; Supply ;RoHS Compliant: Yes |
| DAC7614UB/1K | 功能描述:數(shù)模轉(zhuǎn)換器- DAC Quad Ser In 12-Bit Voltage Output 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 |
| DAC7614UB/1KG4 | 功能描述:數(shù)模轉(zhuǎn)換器- DAC Quad Ser In 12-Bit Voltage Output 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 |
| DAC7614UBG4 | 功能描述:數(shù)模轉(zhuǎn)換器- DAC Quad Ser Input 12B Vltg Output DAC 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 |
| DAC7614UG4 | 功能描述:數(shù)模轉(zhuǎn)換器- DAC Quad Ser In 12-Bit Voltage Output 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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