參數(shù)資料
型號(hào)： ADT7519ARQ-REEL
廠商： Analog Devices, Inc.
元件分類： 溫度/濕度傳感器
英文描述： SPI/I2C Compatible, Temperature Sensor, Four Channel ADC and Quad Voltage Output DAC
中文描述： SPI/I2C兼容，溫度傳感器，四通道ADC和四路電壓輸出DAC
文件頁(yè)數(shù)： 22/44頁(yè)
文件大小： 1350K
代理商： ADT7519ARQ-REEL
ADT7516/ADT7517/ADT7519
Rev. A | Page 22 of 44
BIAS
DIODE
INTERNAL
SENSE
TRANSISTOR
V
DD
TO ADC
V
OUT+
V
OUT–
I
N
×
I
I
BIAS
0
Figure 46. Top Level Structure of Internal Temperature Sensor
Table 7. Thermal Voltage Output (0 V to 2V
REF
)
O/P Voltage (V)
Default °C
0
–40
0.25
–26
0.5
+12
0.75
+3
1
+17
1.12
+23
1.47
+43
1.5
+45
2
+73
2.25
+88
2.5
+102
2.75
+116
3
UDB
3.25
UDB
3.5
UDB
3.75
UDB
4
UDB
4.25
UDB
4.5
UDB
Max °C
–128
–114
–100
–85
–71
–65
–45
–43
–15
0
+14
+28
+42
+56
+70
+85
+99
+113
+127
Sample °C
0
+14
+28
+43
+57
+63
+83
+85
+113
+127
UDB
UDB
UDB
UDB
UDB
UDB
UDB
UDB
UDB
Negative temperatures:
Register
Offset
( )
(
)
128
+
0
=
Temp
V
Code
where:
D7 of Offset Register Code is set to 1 for negative temperatures.
Example:
Offset
( )
(
)
58h
d
Code
Register
=
=
+
=
88
128
40
Since a negative temperature has been inserted into the
equation, DB7 (MSB) of the offset register code is set to 1.
Therefore 58h becomes D8h.
58h + DB7(1) = D8h
Positive temperatures:
Offset Register Code
(d) =
0 V Temp
Example:
Offset Register Code
(d) = 10d = 0Ah
The following equation is used to work out the various
temperatures for the corresponding 8-bit DAC output:
(
P
O
DAC
Temp
Bit
/
8
=
) (
+
)
Temp
V
LSB
0
1
÷
For example, if the output is 1.5 V, V
REF
-IN
= 2.25 V, 8-bit DAC
has an LSB size = 2.25 V/256 = 8.79 × 10
–3
, and 0 V temp is at
–128°C, then the resultant temperature is
(
)
+
=
+
×
÷
128
10
79
.
5
)
(
C
°
43
3
The following equation is used to work out the various
temperatures for the corresponding 10-bit DAC output:
10-Bit Temp
= ((
DAC O/P
÷ 1 LSB) × 0.25) + (
0 V Temp
)
For example, if the output is 0.4991 V, V
REF
-IN = 2.25 V, 10-bit
DAC has an LSB size = 2.25 V/1024 = 2.197 × 10
–3
, and 0 V
temp is at –40°C, then the resulting temperature is
(((0.4991 ÷ 2.197 × 10
–3
) × 0.25) + (–40) = +16.75°C
Figure 47 shows a graph of the DAC output versus temperature
for a V
REF
-IN = 2.25 V.
TEMPERATURE (
°
C)
D
0
–128–110 –90 –70 –50 –30 –10
0.15
10
30
50
70
90
110 127
0.30
0.45
0.60
0.75
0.90
1.05
1.20
1.35
1.50
1.65
1.80
1.95
2.10
2.25
0V = –128
°
C
0V = –40
°
C
0V = 0
°
C
0
Figure 47. DAC Output vs. Temperature V
REF
-IN = 2.25 V
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ADT7519ARQ-REEL7 制造商:Analog Devices 功能描述:Temp Sensor Digital Serial (4-Wire, SPI, I2C) 16-Pin QSOP T/R 制造商:Analog Devices 功能描述:TEMP SENSOR DGTL SERL (4-WIRE, SPI) 16QSOP - Tape and Reel
ADT7519ARQZ 功能描述:IC TEMP SNSR QUAD DAC 16-QSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 熱管理 系列:- 標(biāo)準(zhǔn)包裝:3,000 系列:- 功能:溫度開關(guān) 傳感器類型:內(nèi)部 感應(yīng)溫度:85°C 分界點(diǎn) 精確度:±6°C（最小值） 拓?fù)?ADC（三角積分型），比較器，寄存器庫(kù) 輸出類型:開路漏極 輸出警報(bào):是 輸出風(fēng)扇:是 電源電壓:2.7 V ~ 5.5 V 工作溫度:-55°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:SC-74A，SOT-753 供應(yīng)商設(shè)備封裝:SOT-23-5 包裝:帶卷 (TR) 其它名稱:ADT6501SRJZP085RL7-ND
ADT7519ARQZ1 制造商:AD 制造商全稱:Analog Devices 功能描述:SPI/I2C Compatible, Temperature Sensor, Four Channel ADC and Quad Voltage Output DAC
ADT7519ARQZ1-REEL 制造商:AD 制造商全稱:Analog Devices 功能描述:SPI/I2C Compatible, Temperature Sensor, Four Channel ADC and Quad Voltage Output DAC
ADT7519ARQZ1-REEL7 制造商:AD 制造商全稱:Analog Devices 功能描述:SPI/I2C Compatible, Temperature Sensor, Four Channel ADC and Quad Voltage Output DAC
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