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TMP421 Datenblatt(PDF) 7 Page - Burr-Brown (TI)

[Old version datasheet] Texas Instruments acquired Burr-Brown Corporation. Click here to check the latest version.
Teilenummer TMP421
Bauteilbeschribung  짹1째C Remote and Local TEMPERATURE SENSOR in SOT23-8
Download  26 Pages
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Hersteller  BURR-BROWN [Burr-Brown (TI)]
Direct Link  http://www.burr-brown.com
Logo BURR-BROWN - Burr-Brown (TI)

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APPLICATION INFORMATION
0.1 F
m
10kW
(typ)
10kW
(typ)
TMP421
DXP
DXN
V+
8
7
6
5
2
1
R
S
(2)
R
S
(2)
C
DIFF
(3)
C
DIFF
(3)
R
S
(2)
R
S
(2)
GND
SCL
SDA
+5V
SMBus
Controller
Diode-connectedconfiguration :
(1)
SeriesResistance
Transistor-connectedconfiguration:
(1)
(1)Diode-connectedconfigurationprovidesbettersettlingtime.
Transistor-connectedconfigurationprovidesbetterseriesresistancecancellation.
(2)R shouldbe<1.5kW inmostapplications.
S
(3)C
shouldbe<1000pFinmostapplications.
DIFF
NOTES:
A1
A0
4
3
TMP422
DX1
(4)
DX2
(4)
5
2
1
R
S
(2)
R
S
(2)
C
DIFF
(3)
C
DIFF
(3)
R
S
(2)
R
S
(2)
GND
Diode-connectedconfiguration :
(1)
SeriesResistance
Transistor-connectedconfiguration:
(1)
(1)Diode-connectedconfigurationprovidesbettersettlingtime.
Transistor-connectedconfigurationprovidesbetterseriesresistancecancellation.
(2)R shouldbe<1.5kW inmostapplications.
(3)C
shouldbe<1000pFinmostapplications.
(4)TMP422SMBusslaveaddressis
whenconnectedasshown.
1001100
S
DIFF
NOTES:
DX3
(4)
DX4
(4)
4
3
R
S
(2)
R
S
(2)
C
DIFF
(3)
0.1 F
m
10kW
(typ)
10kW
(typ)
V+
8
7
6
SCL
SDA
+5V
SMBus
Controller
DXP1
DXN1
DXP2
DXN2
TMP421
TMP422
SBOS398A – JULY 2007 – REVISED SEPTEMBER 2007
For proper remote temperature sensing operation, the
The
TMP421
(two-channel)
and
TMP422
TMP421
requires
only
a
transistor
connected
(three-channel) are digital temperature sensors that
between DXP and DXN; the TMP422 requires
combine
a
local
die
temperature
measurement
transistors connected between DX1 and DX2 and
channel and one or two remote junction temperature
between DX3 and DX4. . The SCL and SDA interface
measurement channels in a single SOT23-8 package.
pins
require
pull-up
resistors
as
part
of
the
The
TMP421/22
are
Two-Wire-
and
SMBus
communication bus. A 0.1
μF power-supply bypass
interface-compatible
and
are
specified
over
a
capacitor is recommended for good local bypassing.
temperature
range
of
–40
°C to +125°C. The
Figure 11 shows a typical configuration for the
TMP421/22 contain multiple registers for holding
TMP421, and Figure 12 for the TMP422.
configuration
information
and
temperature
measurement results.
Figure 11. TMP421 Basic Connections
Figure 12. TMP422 Basic Connections
Copyright © 2007, Texas Instruments Incorporated
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Product Folder Link(s): TMP421 TMP422


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