參數(shù)資料
型號： ADT7318ARQ
廠商： ANALOG DEVICES INC
元件分類： 溫度/濕度傳感器
英文描述： Circular Connector; No. of Contacts:37; Series:LJT07R; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:15; Circular Contact Gender:Pin; Circular Shell Style:Jam Nut Receptacle; Insert Arrangement:15-35
中文描述： DIGITAL TEMP SENSOR-SERIAL, 8BIT(s), 5Cel, RECTANGULAR, SURFACE MOUNT
封裝： MO-137-AB, QSOP-16
文件頁數(shù)： 24/32頁
文件大小： 340K
代理商： ADT7318ARQ
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24
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REV. PrN
PRELIMINARY TECHNICAL DATA
ADT7316/7317/7318
C2:0
In single channel mode these bits select between
V
DD
, the internal temperature sensor and the
external temperature sensor for conversion. De-
fault is V
DD
.
000 = V
DD
001 = Internal Temperature Sensor.
010 = External Temperature Sensor
011 - 111 = RESERVED
C3
RESERVED
C4
Selects between single channel and Round Robin
conversion cycle. Default is Round Robin.
0 = Round Robin.
1 = Single Channel.
C5
Default condition is to average every measure-
ment on all channels 16 times. This bit disables
this averaging. Channels consist of temperature,
analog inputs and V
DD
.
0 = Enable averaging.
1 = Disable averaging.
C6
SMBus timeout on the serial clock puts a max
limit on the pulse width of the clock. Ensures
that a fault on the master SCL does not lock up
the SDA line.
0 = Disable SMBus Timeout.
1 = Enable SMBus Timeout.
C7
Software Reset. Setting this bit to a 1 causes a
software reset. All registers and DAC outputs
will reset to their default settings.
CONTROL CONFIGURATION 3 REGISTER (Read/
Write) [Add. = 1Ah]
This configuration register is an 8-bit read/write register
that is used to setup some of the operating modes of the
ADT7316/17/18.
Table 28. Control Configuration 3
D7
D6
D5
D4
D3
D2
D1
D0
C7
C6
C5
C4
C3
C2
C1
C0
0*
0*
0*
0*
0*
0*
0*
0*
*Default settings at Power-up.
Bit
Function
C0
Selects between fast and normal ADC conver-
sion speeds for all three monitoring channels.
0 = ADC clock at 1.4 KHz.
1 = ADC clock at 22.5 KHz.
C1
On the ADT7316 and ADT7317, this bit selects
between 8 bits and 10 bits DAC output resolu-
tion on the Thermal Voltage Output feature.
Default = 8 bits. This bit has no affect on the
ADT7318 output as this part has only an 8-bit
DAC. In the ADT7318 case, write 0 to this bit.
0 = 8 bits resolution.
1 = 10 bits resolution.
C2
RESERVED. Only write 0
’
s.
C3
0 =
puts.
1 = DAC Configration register and LDAC Con-
figuration register control updating of DAC
outputs.
pin controls updating of DAC out-
C4
RESERVED. Only write 0.
C5
Setting this bit selects DAC A voltage output to
be proportional to the internal temperature mea-
surement.
C6
Setting this bit selects DAC B voltage output to
be proportional to the external temperature mea-
surement.
C7
RESERVED. Only write 0.
DAC CONFIGURATION REGISTER (Read/Write)
[Add. = 1Bh]
This configuration register is an 8-bit read/write register
that is used to control the output ranges of all four DACs
and also to control the loading of the DAC registers if the
pin is disabled (bit C3 = 1, Control Configuration
3 register).
Table 29. DAC Configuration
D7
D6
D5
D4
D3
D2
D1
D0
D7
D6
D5
D4
D3
D2
D1
D0
0*
0*
0*
0*
0*
0*
0*
0*
*Default settings at Power-up.
Bit
Function
D0
Selects the output range of DAC A.
0 = 0 V to V
REF
.
1 = 0 V to 2V
REF
.
Selects the output range of DAC B.
0 = 0 V to V
REF
.
1 = 0 V to 2V
REF
.
Selects the output range of DAC C.
0 = 0 V to V
REF
.
1 = 0 V to 2V
REF
.
Selects the output range of DAC D.
0 = 0 V to V
REF
.
1 = 0 V to 2V
REF
.
00
MSB write to any DAC register generates
LDAC command which updates that
DAC only.
01
MSB write to DAC B or DAC D register
generates LDAC command which up-
dates DACs A, B or DACs C, D.
10
MSB write to DAC D register generates
LDAC command which updates all 4
DACs.
11
LDAC command generated from LDAC
register.
D1
D2
D3
D5:D4
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