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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)： | 23/23頁 |
| 文件大?。?/td> | 165K |
| 代理商： | DS2450 |
DS2450
091598 23/23
AC ELECTRICAL CHARACTERISTICS
OVERDRIVE SPEED
PARAMETER
(V
PUP
=4.0V to 6.0V; –40
°
C to +85
°
C)
TYP
MAX
SYMBOL
MIN
UNITS
NOTES
Time Slot
t
SLOT
t
LOW1
t
LOW0
t
LOWR
t
RDV
t
RELEASE
t
SU
t
REC
t
RSTH
t
RSTL
t
PDHIGH
t
PDLOW
60
16
μ
s
μ
s
μ
s
μ
s
μ
s
μ
s
μ
s
μ
s
μ
s
μ
s
μ
s
μ
s
Write 1 Low Time
1
2
Write 0 Low Time
60
16
Read Low Time
1
2
Read Data Valid
exactly 15
Release Time
0
1.5
4
Read Data Setup
1
5
Recovery Time
1
Reset Time High
48
4
Reset Time Low
48
80
Presence Detect High
2
6
Presence Detect Low
8
24
AC ELECTRICAL CHARACTERISTICS
PARAMETER
(V
PUP
or V
CC
=5V
±
10%; –40
°
C to +85
°
C)
TYP
MAX
SYMBOL
MIN
UNITS
NOTES
Sample & Hold Aperture
t
SH
20
μ
s
Equivalent Input Noise
V
INOISE
N
ERR
t.b.d.
μ
V RMS
Total Conversion Error
±
1/2
LSB
12
NOTES:
1. All voltages are referenced to ground.
2. V
PUP
= external pull–up voltage.
3. Input load is to ground.
4. An additional reset or communication sequence cannot begin until the reset high time has expired.
5. Read data setup time refers to the time the host must pull the 1–Wire bus low to read a bit. Data is guaranteed
to be valid within 1
μ
s of this falling edge.
6. Capacitance on the data pin could be 800 pF when power is first applied. If a 5 k
resistor is used to pull up the
data line to V
PUP
, 5
μ
s after power has been applied the parasite capacitance will not affect normal communica-
tions.
7. The reset low time (t
RSTL
) should be restricted to a maximum of 960
μ
s, to allow interrupt signaling, otherwise,
it could mask or conceal interrupt pulses.
8. V
IH
is a function of the external pull–up resistor and V
PUP
.
9. Under certain low voltage conditions V
ILMAX
may have to be reduced to as much as 0.5V to always guarantee a
presence pulse.
10.Measured with V
CC
= 5.0V supply and 1–Wire input open.
11. Measured with V
CC
= 5.0V supply, 1–Wire input open and analog circuitry inactive.
12.At 8–bit resolution regardless of range and temperature; includes offset, non–linearity and noise.
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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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