LTC2990CMS View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LTC2990CMS' PDF : 24 Pages View PDF
Applications Information
Table 9. Conversion Formats
VOLTAGE FORMATS
SIGN
Single-Ended
0
LSB = 305.18µV
0
0
0
1
Differential
0
LSB = 19.42µV
0
0
0
1
1
1
VCC = Result + 2.5V
0
LSB = 305.18µV
0
0
TEMPERATURE FORMATS
Temperature Internal, TR1 or TR2
LSB = 0.0625 Degrees
FORMAT
Celsius
Celsius
Celsius
Celsius
Kelvin
Kelvin
Kelvin
BINARY VALUE D[13:0]
11111111111111
10110011001101
01111111111111
00000000000000
11110000101001
11111111111111
10110011001101
10000000000000
00000000000000
10000000000000
00001110101000
10000000000000
10110011001101
10000000000000
00001010001111
BINARY VALUE D[12:0]
0011111010000
0000110010001
0000110010000
1110110000000
1100011100010
1000100010010
0111010010010
Table 10. Recommended Transistors to Be Used as Temperature
Sensors
MANUFACTURER
PART NUMBER
PACKAGE
Fairchild Semiconductor
MMBT3904
SOT-23
Central Semiconductor
CMPT3904
SOT-23
Diodes, Inc.
MMBT3904
SOT-23
On Semiconductor
MMBT3904LT1
SOT-23
NXP
MMBT3904
SOT-23
Infineon
MMBT3904
SOT-23
Rohm
UMT3904
SC-70
LTC2990
VOLTAGE
>5
3.500
2.500
0.000
–0.300
>0.318
+0.300
+0.159
0.000
–0.159
–0.300
<–0.318
VCC = 6V
VCC = 5V
VCC = 2.7V
TEMPERATURE
+125.0000
+25.0625
+25.0000
–40.0000
398.1250
273.1250
233.1250
2990f
17
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