參數(shù)資料
型號(hào)： ADC10158CIN
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： ADC
英文描述： 10-Bit Plus Sign 4 レs ADCs with 4- or 8-Channel MUX, Track/Hold and Reference
中文描述： 8-CH 10-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDIP28
封裝： DIP-28
文件頁(yè)數(shù)： 19/23頁(yè)
文件大?。?/td> 439K
代理商： ADC10158CIN
2.0 Applications Information
(Continued)
The minimum value of V
(V
= V
REF+
V
REF
) can be
quite small (see Typical Performance Characteristics) to al-
low direct conversion of transducer outputs providing less
than a 5V output span. Particular care must be taken with re-
gard to noise pickup, circuit layout and system error voltage
sources when operating with a reduced span due to the in-
creased sensitivity of the converter (1 LSB equals V
REF
/2
n
).
2.3 THE ANALOG INPUTS
Due to the sampling nature of the analog inputs, at the clock
edges short duration spikes of current will be seen on the se-
lected assigned negative input. Input bypass capacitors
should not be used if the source resistance is greater than
1 k
since they will average the AC current and cause an ef-
fective DC current to flow through the analog input source re-
sistance. An op amp RC active lowpass filter can provide
both impedance buffering and noise filtering should a high
impedance signal source be required. Bypass capacitors
may be used when the source impedance is very low without
any degradation in performance.
In a true differential input stage, a signal that is common to
both “+” and “” inputs is cancelled. For the ADC10154 and
ADC10158, the positive input of a selected channel pair is
only sampled once before the start of a conversion during
the acquisition time (t
). The negative input needs to be
stable during the complete conversion sequence because it
is sampled before each decision in the SAR sequence.
Therefore, anyAC common-mode signal present on the ana-
log inputs will not be completely cancelled and will cause
some conversion errors. For a sinusoid common-mode sig-
nal this error is:
V
error
(Max) = V
PEAK
(2
π
f
CM
)(t
C
)
where f
is the frequency of the common-mode signal,
V
is its peak voltage value, and t
is theA/D’s maximum
conversion time (t
= 22/f
for 10-bit plus sign resolution).
For example, for a 60 Hz common-mode signal to generate
a
1
4
LSB error (1.24 mV) with a 4.5 μs conversion time, its
peak value would have to be approximately 731 mV.
2.4 OPTIONAL ADJUSTMENTS
2.4.1 Zero Error
The zero error of the A/D converter relates to the location of
the first riser of the transfer function (see Figure 1) and can
be measured by grounding the minus input and applying a
small magnitude positive or negative voltage to the plus in-
put. Zero error is the difference between actual DC input
voltage which is necessary to just cause an output digital
DS011225-21
a. Ratiometric Using the Internal Reference
DS011225-22
b. Absolute Using a 4.096V Span
FIGURE 5. Different Reference Configurations
A
www.national.com
19
相關(guān)PDF資料
PDF描述
ADC1021 10-BIT uP COMPATIBLKE A/D CONVERTERS
ADC1021CCJ 10-BIT uP COMPATIBLKE A/D CONVERTERS
ADC1021CCJ-1 10-BIT uP COMPATIBLKE A/D CONVERTERS
ADC10221CIVT 10-Bit, 15 MSPS, 98 mW A/D Converter with Internal Sample and Hold
ADC10221 10-Bit, 15 MSPS, 98 mW A/D Converter with Internal Sample and Hold
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ADC10158CIN/NOPB 功能描述:IC ADC 10BIT W/4-8 CH MX 28-DIP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 位數(shù):12 采樣率（每秒）:3M 數(shù)據(jù)接口:- 轉(zhuǎn)換器數(shù)目:- 功率耗散（最大）:- 電壓電源:- 工作溫度:- 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 供應(yīng)商設(shè)備封裝:SOT-23-6 包裝:帶卷 (TR) 輸入數(shù)目和類型:-
ADC10158CIN/NOPB 制造商:Texas Instruments 功能描述:A/D Converter (A-D) IC
ADC10158CIWM 功能描述:模數(shù)轉(zhuǎn)換器 - 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
ADC10158CIWM/48 制造商:Rochester Electronics LLC 功能描述: 制造商:Texas Instruments 功能描述:
ADC10158CIWM/NOPB 功能描述:模數(shù)轉(zhuǎn)換器 - 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
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*