- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄375266 > ADS900E 10-Bit, 20MHz, #V Supply ANALOG-TO-DIGITAL CONVERTER PDF資料下載
參數(shù)資料
| 型號(hào)： | ADS900E |
| 英文描述： | 10-Bit, 20MHz, #V Supply ANALOG-TO-DIGITAL CONVERTER |
| 文件頁數(shù)： | 12/12頁 |
| 文件大?。?/td> | 219K |
| 代理商： | ADS900E |
12
ADS900
+V
S
1
13
14
GND
ADS900
0.1μF
+V
S
18
19
20
GND
0.1μF
+V
S
28
0.1μF
POWER-DOWN MODE
The ADS900’s low power consumption can be reduced even
further by initiating a power down mode. For this, the Power
Down Pin (Pin 17) must be tied to a logic “High” reducing
the current drawn from the supply by about 70%. In normal
operation the power-down mode is disabled by an internal
pull-down resistor (50k
).
During power-down the digital outputs are set in 3-state.
With the clock applied, the converter does not accurately
process the sampled signal. After removing the power-down
condition the output data from the following 5 clock cycles
is invalid (data latency).
DECOUPLING AND GROUNDING
CONSIDERATIONS
The ADS900 has several supply pins, one of which is
dedicated to only supply the output driver (LV
DD
). The
remaining supply pins are not divided into analog and digital
supply pins since they are internally connected on the chip.
For this reason it is recommended to treat the converter as an
analog component and to power it from the analog supply
only. Digital supply lines often carry high levels of noise
which can couple back into the converter and limit the
performance.
Because of its fast switching architecture, the converter also
generates high frequency transients and noise that are fed
back into the supply and reference lines. This requires that
the supply and reference pins be sufficiently bypassed.
Figure 9 shows the recommended decoupling scheme for the
analog supplies. In most cases 0.1
μ
F ceramic chip capacitors
are adequate to keep the impedance low over a wide fre-
quency range. Their effectiveness largely depends on the
proximity to the individual supply pin. Therefore they should
be located as close to the supply pins are possible.
FIGURE 8. Independent Supply Connection for Output
Stage.
+V
S
+LV
DD
ADS900
Digital
Output
Stage
FIGURE 9. Recommended Bypassing for Analog Supply
Pins.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ADS901 | 10-Bit, 20MHz, #V Supply ANALOG-TO-DIGITAL CONVERTER |
| ADS901E | 10-Bit, 20MHz, #V Supply ANALOG-TO-DIGITAL CONVERTER |
| ADS902 | 10-Bit, 30MHz Sampling ANALOG-TO-DIGITAL CONVERTER |
| ADS902E | 10-Bit, 30MHz Sampling ANALOG-TO-DIGITAL CONVERTER |
| ADS930 | 8-Bit, 30MHz Sampling ANALOG-TO-DIGITAL CONVERTER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADS900E/1K | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 10-Bit 20 MSPS SE/Diff Input RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| ADS900E/1KG4 | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 10-Bit 20 MSPS SE/Diff Input RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| ADS900EG4 | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 10-Bit 20 MSPS SE/Diff Input RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| ADS901 | 制造商:BB 制造商全稱:BB 功能描述:10-Bit, 20MHz, #V Supply ANALOG-TO-DIGITAL CONVERTER |
| ADS901E | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 10-Bit 20 MSPS SE/Diff Input RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。