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參數(shù)資料
| 型號(hào)： | DS2450S |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 12/25頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC CONVERTER A/D QUAD 1-W 8-SOIC |
| 標(biāo)準(zhǔn)包裝： | 88 |
| 位數(shù)： | 16 |
| 采樣率（每秒）： | 1k |
| 數(shù)據(jù)接口： | 串行 |
| 轉(zhuǎn)換器數(shù)目： | 1 |
| 功率耗散（最大）： | 2.5mW |
| 電壓電源： | 單電源 |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-SOIC（0.209"，5.30mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 8-SOIC |
| 包裝： | 管件 |
| 輸入數(shù)目和類型： | 4 個(gè)單端，單極 |
DS2450
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the comparison. Each A/D conversion is initiated by the bus master. A channel not used as analog input
can serve as a digital open-drain output. After disabling the input the bus master can directly switch on or
off the open-drain transistor at the selected channel. All device settings are stored in SRAM and kept
non-volatile while the device gets power either through the 1-Wire bus or through its VCC pin. After
powering up, a power-on reset flag signals the bus master the need to restore the device settings before
the regular operation can resume. All device registers and conversion read-out registers are organized as
three 8-byte memory pages similar to the Status Memory of a DS2505/6 device. An on-chip CRC16
generator protects the communication against transmission errors when reading through the end of a
memory page as well as when writing individual bytes.
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 identification for the device itself but also is a means to locate and address the device in order
to exercise its control functions.
The device gets its power either from the 1-Wire bus or through its VCC pin. Without a VCC 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, however, provides sufficient energy only for
communication. To perform an A/D conversion a strong pullup of the 1-Wire bus to 5V or a VCC supply
is required.
DS2450 BLOCK DIAGRAM Figure 1
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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 |
| DS2450S+T&R | 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 |
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