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參數(shù)資料
| 型號： | ADS7800JU |
| 英文描述： | 12-Bit 3ms Sampling ANALOG-TO-DIGITAL CONVERTER |
| 中文描述： | 12位為3ms采樣模擬到數(shù)字轉(zhuǎn)換器 |
| 文件頁數(shù)： | 12/12頁 |
| 文件大小： | 122K |
| 代理商： | ADS7800JU |
ADS7800
12
INPUT VOLTAGE RANGE AND LSB VALUES
Input Voltage Range Defined As:
Analog Input Connected to Pin
Pin Connected to GND
One Least Significant Bit (LSB)
±
10V
1
2
20V/2
12
4.88mV
±
5V
2
1
10V/2
12
2.44mV
FSR/2
12
OUTPUT TRANSITION VALUES
FFE
H
to FFF
H
+Full Scale
+10V–3/2LSB
+9.9927V
0V–1/2LSB
–2.44mV
–10V+1/2LSB
–9.9976V
+5V–3/2LSB
+4.9963V
0V–1/2LSB
–1.22mV
–5V+1/2LSB
–4.9988V
7FF
H
to 800
H
Mid Scale
(Bipolar Zero)
–Full Scale
000
H
to 001
H
TABLE IV. Input Voltages, Transition Values, and LSB Values.
Next, although the data outputs are forced into a Hi-Z state
during conversion, fast bus transients can still be capaci-
tively coupled into the ADS7800. If the data bus experiences
fast transients during conversion, these transients can be
attenuated by adding a logic buffer to the data outputs. The
BUSY output can be used to enable the buffer.
Naturally, transients on the analog input signal are to be
avoided, especially at times within
±
20ns of R/C going
LOW, when they may be trapped as part of the charge on the
capacitor array. This requires careful layout of the circuit in
front of the ADS7800.
Finally, in multiplexed systems, the timing on when the
multiplexer is switched may affect the analog performance
of the system. In most applications, the multiplexer can be
switched as soon as R/C goes LOW (with appropriate
delays), but this may affect the conversion if the switched
signal shows glitches or significant ringing at the ADS7800
input. Whenever possible, it is safer to wait until the
conversion is completed before switching the multiplexer.
The extremely fast acquisition time and conversion time of
the ADS7800 make this practical in many applications.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADS7800JU/1K | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit 3us Sampling 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 |
| ADS7800JU/1KE4 | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit 3us Sampling 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 |
| ADS7800JU/1KG4 | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12B 3us Sampling ADC 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 |
| ADS7800JUE4 | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit 3us Sampling 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 |
| ADS7800JUG4 | 功能描述:IC 12BIT 333KHZ SMPL ADC 24SOIC 制造商:texas instruments 系列:- 包裝:管件 零件狀態(tài):在售 位數(shù):12 采樣率（每秒）:333k 輸入數(shù):1 輸入類型:單端 數(shù)據(jù)接口:并聯(lián) 配置:S/H-ADC 無線電 - S/H:ADC:1:1 A/D 轉(zhuǎn)換器數(shù):1 架構(gòu):SAR 參考類型:內(nèi)部 電壓 - 電源，模擬:5V，-11.4 V ~ 16.5 V 電壓 - 電源，數(shù)字:5V 特性:- 工作溫度:-40°C ~ 85°C 封裝/外殼:24-SOIC（0.295"，7.50mm 寬） 供應(yīng)商器件封裝:24-SOIC 基本零件編號:ADS7800 標(biāo)準(zhǔn)包裝:25 |
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