參數(shù)資料
型號(hào)： 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(yè)數(shù)： 18/23頁(yè)
文件大?。?/td> 165K
代理商： DS2450
DS2450
091598 18/23
INITIALIZATION PROCEDURE “RESET AND PRESENCE PLUSES”
Figure 10
t
RSTH
t
RSTL
t
R
V
V
PULPULLUP
IH MIN
V
IL MAX
Regular Speed
480
μ
s < t
RSTL
<
480
μ
s < t
RSTH
<
15
μ
s < t
PDH
< 60
μ
s
60
μ
s < t
PDL
< 240
μ
s
*
**
t
PDH
t
PDL
MASTER RX “PRESENCE PULSE”
MASTER TX “RESET PULSE”
RESISTOR
MASTER
DS2450
Overdrive Speed
48
μ
s < t
RSTL
< 80
μ
s
48
μ
s < t
RSTH
<
2
μ
s < t
PDH
< 6
μ
s
8
μ
s < t
PDL
< 24
μ
s
**
*IN ORDER NOT TO MASK INTERRUPT SIGNALING BY OTHER DEVICES ON THE 1–WIRE BUS, t
RSTL
+t
R
SHOULD ALWAYS BE LESS THAN 960
μ
s
**INCLUDES RECOVERY TIME
READ/WRITE TIME SLOTS
The definitions of write and read time slots are illustrated
in Figure 11. All time slots are initiated by the master
driving the data line low. The falling edge of the data line
synchronizes the DS2450 to the master by triggering a
delay circuit in the DS2450. During write time slots, the
delay circuit determines when the DS2450 will sample
the data line. For a read data time slot, if a “0” is to be
transmitted, the delay circuit determines how long the
DS2450 will hold the data line low overriding the 1 gen-
erated by the master. If the data bit is a “1”, the device
will leave the read data time slot unchanged.
READ/WRITE TIME DIAGRAM
Figure 11
Write–one Time Slot
60
μ
s
t
REC
t
LOW1
V
PULLUP
V
PULLUP MIN
IH MIN
V
IL MAX
0V
Regular Speed
60
μ
s < t
SLOT
< 120
μ
s
1
μ
s < t
LOW1
< 15
μ
s
1
μ
s < t
REC
<
15
μ
s
DS2450
SAMPLING WINDOW
t
SLOT
Overdrive Speed
6
μ
s < t
SLOT
< 16
μ
s
1
μ
s < t
LOW1
< 2
μ
s
1
μ
s < t
REC
<
(OD: 2
μ
s)
(OD: 6
μ
s)
RESISTOR
MASTER
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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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