參數(shù)資料
型號: ADC08060
廠商: National Semiconductor Corporation
英文描述: 8-Bit, 20 MSPS to 60 MSPS, 1.3 mW/MSPS A/D Converter
中文描述: 8位,20 MSPS的60 MSPS的,1.3毫瓦/ MSPS的A / D轉(zhuǎn)換
文件頁數(shù): 14/19頁
文件大?。?/td> 539K
代理商: ADC08060
Applications Information
(Continued)
The reference bias circuit of
Figure 2
is very simple and the
performance is adequate for many applications. However,
circuit tolerances will lead to a wide reference voltage range.
Superior performance can generally be achieved by driving
the reference pins with a low impedance source.
The circuit of
Figure 3
will allow a more accurate setting of
the reference voltages. The lower amplifier must have bipo-
lar supplies as its output voltage must go negative to force
V
to any voltage below the V
of the PNP transistor. Of
course, the divider resistors at the amplifier input could be
changed to suit your reference voltage needs, or the divider
can be replaced with potentiometers for precise settings.
The bottom of the ladder (V
) may simply be returned to
ground if the minimum input signal excursion is 0V. Be sure
that the driving sources can source sufficient current into the
V
pin and sink enough current from the V
RB
pin to keep
these pins stable.
The LMC662 amplifier shown was chosen for its low offset
voltage and low cost.
20006232
FIGURE 2. Simple, low component count reference biasing. Because of the ladder and external resistor tolerances,
the reference voltage can vary too much for some applications.
A
www.national.com
14
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ADC08060_08 制造商:NSC 制造商全稱:National Semiconductor 功能描述:8-Bit, 20 MSPS to 60 MSPS, 1.3 mW/MSPS A/D Converter with Internal Sample-and-Hold
ADC08060CIMT 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
ADC08060CIMT/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
ADC08060CIMT/NOPB 制造商:Texas Instruments 功能描述:A/D Converter (A-D) IC
ADC08060CIMTX 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