Rev.1.2
_00
CMOS TEMPERATURE SENSOR IC
S-58LM20A Series
The S-58LM20A Series is a high-accuracy temperature sensor IC on a
single chip, provides output voltage which is linear against the
temperature change.
Each chip consists of a temperature sensor, a constant current circuit,
and an operational amplifier.
This IC is able to be used under the wide temperature range of –55°C to
130°C. This IC has much better linearity than other conventional
temperature sensors such as thermistor, it is possible to achieve the
extensive application for temperature control.
Features
•
Accuracy against temperature
•
Linear output voltage
±2.5°C
(−55 to
+130°C)
−11.77
mV/°C Typ.
Ta
= −30°C：
2.205 V Typ.
Ta
= +30°C：
1.515 V Typ.
Ta
= +130°C：
0.303 V Typ.
±0.4%
Typ. (−20 to
+80°C)
V
DD
=
2.4 to 5.5 V (−30 to
+130°C)
V
DD
=
2.7 to 5.5 V (−55 to
+130°C)
4.5
µA
Typ. (+25°C) 6.0
µA
Max. (−55 to
+130°C)
•
Nonlinearity
•
Operation in wide range of power supply voltage
•
•
•
•
•
Low current consumption
Built-in operational amplifier
Output voltage referred to V
SS
Small package
Lead-free product
SNT-4A, SC-82AB, WLP-4B
Applications
•
•
•
•
•
•
•
Compensation of high-frequency circuits such as cellular phones and radio equipment
Compensation of oscillation frequency in crystal oscillator
LCD contrast compensation
Compensation of amplifier gain
Compensation of auto focus circuits
Temperature detection in battery management
Overheating prevention for charged batteries or halogen lights
Package
Package Name
SC-82AB
SNT-4A
WLP-4B
Drawing Code
Package
NP004-A
PF004-A
HB004-B
Tape
NP004-A
PF004-A
HB004-B
Reel
NP004-A
PF004-A
HB004-B
Land
PF004-A
Seiko Instruments Inc.
1
CMOS TEMPERATURE SENSOR IC
S-58LM20A Series
Block Diagram
Rev.1.2
_00
VDD
VOUT
Temperature sensor
VSS
Figure 1
2
Seiko Instruments Inc.
Rev.1.2
_00
Product Name Structure
CMOS TEMPERATURE SENSOR IC
S-58LM20A Series
•
Users can select the product type in the S-58LM20A Series. Regarding the contents of the product name, refer to “1.
Product name”
and regarding details, refer to“2.
Product name list”.
1. Product name
(1) SC-82AB, SNT-4A package
S-58LM20A
-
xxxx
G
Package name (abbreviation) and packing specifications
N4T1 : SC-82AB, Tape
I4T1 : SNT-4A, Tape
Product name
*1.
Refer to the taping specifications.
*1
(2) WLP-4B package
S-58LM20A
-
xxxx
S
Package name (abbreviation) and packing specifications
*1
H4T1 : WLP-4B, Tape
Product name
*1.
Refer to the taping specifications.
2. Product name list
Table 1
Product Name
S-58LM20A-N4T1G
S-58LM20A-I4T1G
S-58LM20A-H4T1S
Temperature Accuracy
±2.5°C
±2.5°C
±2.5°C
Package
SC-82AB
SNT-4A
WLP-4B
Seiko Instruments Inc.
3
CMOS TEMPERATURE SENSOR IC
S-58LM20A Series
Pin Configuration
SC-82AB
Top view
4
3
Rev.1.2
_00
Table 2
Pin No.
1
2
3
4
Pin Name
VDD
VSS
NC
*1
VOUT
Description
Power supply pin
GND pin
No connection
Output voltage pin
*1.
The NC pin is electrically open.
The NC pin can be connected to VDD and VSS.
1
2
Figure 2
SNT-4A
Top view
1
2
4
3
Table 3
Pin No.
1
2
3
4
Pin Name
VSS
VDD
VOUT
NC
*1
Description
GND pin
Power supply pin
Output voltage pin
No connection
*1.
The NC pin is electrically open.
The NC pin can be connected to VDD and VSS.
Figure 3
WLP-4B
Top view
Pin No.
1
2
3
4
Table 4
Pin Name
VDD
VSS
*1
VSS
*1
VOUT
Description
Power supply pin
GND pin
GND pin
Output voltage pin
4
1
3
2
*1.
Connect both VSS pins to GND.
Figure 4
WLP-4B
Bottom view
1
4
2
3
Figure 5
4
Seiko Instruments Inc.
Rev.1.2
_00
Absolute Maximum Ratings
Table 5
CMOS TEMPERATURE SENSOR IC
S-58LM20A Series
Item
Power supply pin voltage
Output voltage
SC-82AB
Power dissipation
SNT-4A
WLP-4B
Operating ambient temperature
Storage temperature
T
opr
T
stg
P
D
V
DD
Symbol
V
OUT
(Ta = 25
°
C unless otherwise specified)
Absolute Maximum Rating
Unit
V
SS
– 0.3 to V
SS
+
6.5
V
SS
– 0.3 to V
DD
+
0.3
350
300
290
*1
*1
*1
V
V
mW
mW
mW
°
C
°
C
–55 to
+
130
–65 to
+
150
*1.
When mounted on board
[Mounted board]
(1) Board size: 114.3 mm
×
76.2 mm
×
t1.6 mm
(2) Board name: JEDEC STANDARD51-7
Caution The absolute maximum ratings are rated values exceeding which the product could suffer physical
damage. These values must therefore not be exceeded under any conditions.
Seiko Instruments Inc.
5
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