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參數(shù)資料
| 型號： | DS2450 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | 1-Wire Quad A/D Converter(1線串行四路A/D轉(zhuǎn)換器) |
| 中文描述： | 四路、1-Wire A/D轉(zhuǎn)換器 |
| 文件頁數(shù)： | 2/23頁 |
| 文件大小： | 165K |
| 代理商： | DS2450 |
DS2450
091598 2/23
OVERVIEW
The block diagram in Figure 1 shows the major function
blocks of the device. The DS2450 contains a factory–
lasered registration number that includes a unique
48–bit serial number, an 8–bit CRC, and an 8–bit family
code (20H). The 64–bit ROM portion of the DS2450 not
only creates an absolutely unique electronic identifica-
tion for the device itself but also is a means to locate and
address the device in order to exercise its control func-
tions.
The device gets its power either from the 1–Wire bus or
through its V
CC
pin. Without a V
CC
supply the device
stores energy on an internal capacitor during periods
where the signal line is high and continues to operate off
of this “parasite” power source during the low times of
the 1–Wire line until it returns to high to replenish the
parasite (capacitor) supply. This provides sufficient
energy for communication and for a single device to per-
form an A/D conversion. For multiple DS2450 convert-
ing simultaneously a strong pull–up of the 1–Wire bus to
5V or a V
CC
supply is required.
DS2450 BLOCK DIAGRAM
Figure 1
PARASITE POWER
INT. V
DD
CONVERSION
64–BIT LASERED
ROM
1–WIRE FUNCTION
CONTROL
REGISTER ACCESS
AND CONVERSION
CONTROL
16–BIT CRC–
GENERATOR
A/D CONVERTER
CHANNEL CONTROL
AND REGISTERS
4 TO 1 ANALOG
MULTIPLEXER
AIN–A
AIN–B
AIN–C
AIN–D
V
CC
1–WIRE BUS
DATA
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS2450S | 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 |
| DS2450S/T&R | 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 |
| DS2450S+ | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC Quad 1-Wire 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 |
| DS2450S+ | 制造商:Maxim Integrated Products 功能描述:SEMICONDUCTOR ((NW)) |
| DS2450S+T&R | 制造商:Maxim Integrated Products 功能描述:IC CONVERTER A/D QUAD 1-W 8-SOIC |
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