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TMP411-Q1 Datasheet(PDF) 18 Page - Texas Instruments

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Part # TMP411-Q1
Description  짹1째C Remote and Local Temperature Sensor With N-Factor and Series Resistance Correction
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TMP411-Q1 Datasheet(HTML) 18 Page - Texas Instruments

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TMP411-Q1
SBOS527F – DECEMBER 2010 – REVISED NOVEMBER 2013
www.ti.com
RESOLUTION REGISTER
CONVERSION RATE REGISTER
The RES1 and RES0 bits (resolution bits 1 and 0) of
The Conversion Rate Register controls the rate at
the Resolution Register set the resolution of the local
which temperature conversions are performed. This
temperature
measurement
channel.
Remote
register adjusts the idle time between conversions but
temperature measurement channel resolution is not
not the conversion timing itself, thereby allowing the
affected. Changing the local channel resolution also
TMP411-Q1 power dissipation to be balanced with
affects the conversion time and rate of the TMP411-
the temperature register update rate. Table 8 shows
Q1. The Resolution Register is set by writing to
the
conversion
rate
options
and
corresponding
pointer address 1Ah and is read by reading from
current consumption.
pointer address 1Ah. Table 7 shows the resolution
bits for the Resolution Register.
ONE-SHOT CONVERSION
When the TMP411-Q1 is in shutdown mode (SD = 1
Table 7. Resolution Register: Local Channel
in the Configuration Register), a single conversion on
Programmable Resolution
both channels is started by writing any value to the
RESOLUTION REGISTER (Read = 1Ah, Write = 1Ah, POR =
One-Shot Start Register, pointer address 0Fh. This
1Ch)
write operation starts one conversion; the TMP411-
CONVERSION
Q1 returns to shutdown mode when that conversion
RES1
RES0
RESOLUTION
TIME
completes. The value of the data sent in the write
(Typical)
command is irrelevant and is not stored by the
0
0
9 bits (0.5°C)
12.5 ms
TMP411-Q1. When the TMP411-Q1 is in shutdown
10 bits
mode, an initial 200
μs is required before a one-shot
0
1
25 ms
(0.25°C)
command can be given. (NOTE: When a shutdown
11 bits
command is issued, the TMP411-Q1 completes the
1
0
50 ms
(0.125°C)
current conversion before shutting down.) This wait
12 bits
100 ms
time only applies to the 200
μs immediately following
1
1
(0.0625°C)
shutdown.
One-shot
commands
can
be
issued
without delay thereafter.
Bits 2 through 4 of the Resolution Register must
always be set to 1. Bits 5 through 7 of the Resolution
Register must always be set to 0. The power-on-reset
value of this register is 1Ch.
Table 8. Conversion Rate Register
CONVERSION RATE REGISTER (Read = 04h, Write = 0Ah, POR = 08h)
AVERAGE IQ (TYP) (
μA)
CONVERSION/SE
R7
R6
R5
R4
R3
R2
R1
R0
C
VS = 2.7V
VS = 5.5V
0
0
0
0
0
0
0
0
0.0625
11
32
0
0
0
0
0
0
0
1
0.125
17
38
0
0
0
0
0
0
1
0
0.25
28
49
0
0
0
0
0
0
1
1
0.5
47
69
0
0
0
0
0
1
0
0
1
80
103
0
0
0
0
0
1
0
1
2
128
155
0
0
0
0
0
1
1
0
4
190
220
07h to 0Fh
8
373
413
18
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Product Folder Links: TMP411-Q1


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