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參數(shù)資料
| 型號(hào)： | ADC10664CIWM |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | ADC |
| 英文描述： | 10-Bit 360 ns A/D Converter with Input Multiplexer and Sample/Hold |
| 中文描述： | 4-CH 10-BIT FLASH/SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO28 |
| 封裝： | SO-28 |
| 文件頁數(shù)： | 8/14頁 |
| 文件大?。?/td> | 274K |
| 代理商： | ADC10664CIWM |
Timing Diagrams
Functional Description
The ADC10662 and ADC10664 digitize an analog input sig-
nal to 10 bits accuracy by performing two lower-resolution
“flash” conversions. The first flash conversion provides the
six most significant bits (MSBs) of data, and the second flash
conversion provides the four least significant bits LSBs).
Figure 3 is a simplified block diagram of the converter. Near
the center of the diagram is a string of resistors. At the bot-
tom of the string of resistors are 16 resistors, each of which
has a value 1/1024 the resistance of the whole resistor
string. These lower 16 resistors (the
LSB Ladder
) therefore
have a voltage drop of 16/1024, or 1/64 of the total reference
voltage (V
V
) across them. The remainder of the
resistor string is made up of eight groups of eight resistors
connected in series. These comprise the
MSB Ladder
. Each
section of the MSB Ladder has
1
8
of the total reference volt-
age across it, and each of the LSB resistors has 1/64 of the
total reference voltage across it. Tap points across these re-
sistors can be connected, in groups of sixteen, to the sixteen
comparators at the right of the diagram.
DS011192-7
FIGURE 1. Mode 1. The conversion time (t
CONV
) is set by the internal timer.
DS011192-8
FIGURE 2. Mode 2 (RD Mode). The conversion time (t
) includes the
sampling time and is determined by the internal timer.
www.national.com
8
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADC10664CIWM/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 |
| ADC10664CIWM/NOPB | 制造商:Texas Instruments 功能描述:A/D Converter (A-D) IC |
| ADC10664CIWM-NOPB | 制造商:TI 制造商全稱:Texas Instruments 功能描述:ADC10662/ADC10664 10-Bit 360 ns A/D Converter with Input Multiplexer and Sample/Hold |
| ADC10664CIWMX | 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 |
| ADC10664CIWMX/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 |
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