LTC2990
2
Quad I C Voltage, Current
and Temperature Monitor
Fea T Descrip T
n
Measures Voltage, Current and Temperature The LTC 2990 is used to monitor system temperatures,
2
n
Measures Two Remote Diode Temperatures voltages and currents. Through the I C serial interface,
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0.5C Accuracy, 0.06C Resolution (Typ) the device can be configured to measure many combi-
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1C Internal Temperature Sensor (Typ) nations of internal temperature, remote temperature,
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14-Bit ADC Measures Voltage/Current remote voltage, remote current and internal V . The
CC
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3V to 5.5V Supply Operating Voltage internal 10ppm/C reference minimizes the number of
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Four Selectable Addresses supporting components and area required. Selectable
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Internal 10ppm/C Voltage Reference address and configurable functionality give the LTC2990
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10-Lead MSOP Package flexibility to be incorporated in various systems needing
temperature, voltage or current data. The LTC2990 fits
well in systems needing sub-millivolt voltage resolution,
a T
1% current measurement and 1C temperature accuracy
n or any combination of the three.
Temperature Measurement
n
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and Easy
Supply Voltage Monitoring
Drive is a trademark of Linear Technology Corporation. All other trademarks are the property of
n
Current Measurement
their respective owners.
n
Remote Data Acquisition
n
Environmental Monitoring
Typical a T
Voltage, Current, Temperature Monitor Temperature Total Unadjusted Error
R 1.0
SENSE
2.5V
I
LOAD
5V
0.5
V T
CC V1 V2
REMOTE
SDA V3
SCL 0
LTC2990
T
REMOTE
ADR0
ADR1 V4
2990 TA01a
0.5
GND
T
INTERNAL
1.0
MEASURES: TWO SUPPLY VOLTAGES,
50 25 0 25 50 75 100 125
SUPPLY CURRENT, INTERNAL AND
T (C)
AMB
REMOTE TEMPERATURES
2990 TA01b
2990fe
1
For more information www.linear.com/LTC2990
TUE (C)
ion pplica
ions pplica
ion uresLTC2990
a Te Maxi Mu M r a T p in c F T
(Note 1)
TOP VIEW
Supply Voltage V ................................... 0.3V to 6.0V
CC
V1 1 10 V
CC
Input Voltages V1, V2, V3, V4, SDA, SCL,
V2 2 9 ADR1
V3 3 8 ADR0
ADR1, ADR2 ..................................0.3V to (V + 0.3V)
CC
V4 4 7 SCL
Operating Temperature Range
GND 5 6 SDA
LTC2990C ................................................ 0C to 70C MS PACKAGE
10-LEAD PLASTIC MSOP
LTC2990I .............................................40C to 85C
T = 125C, = 150C/W
JMAX JA
Storage Temperature Range .................. 65C to 150C
Lead Temperature (Soldering, 10 sec) ...................300C
o r Der i n F Ma T