"TI-LM20.pdf Product Folder Sample"
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收藏 1.25MB PDF 举报 The document TI-LM20.pdf provides detailed information about the LM20 product folder sample from Texas Instruments. This product folder sample includes a variety of technical specifications, features, and benefits of the LM20 device.
The LM20 is a high-performance temperature sensor that offers accurate measurements with a resolution of 0.125°C. It has a wide operating temperature range of -55°C to 150°C, making it suitable for various applications in industries such as automotive, consumer electronics, and industrial automation. The LM20 is designed with a single-wire digital interface for easy integration with microcontrollers and other digital systems.
The document discusses the key features of the LM20, including its low power consumption, high accuracy, and compact size. It also provides an overview of the device's performance characteristics, such as its response time, operating voltage range, and communication protocol. Additionally, the document includes information on the physical dimensions and pin configurations of the LM20, as well as recommended operating conditions and application circuit examples.
Overall, the TI-LM20.pdf document serves as a comprehensive guide for engineers and designers who are interested in incorporating the LM20 temperature sensor into their projects. With its detailed technical information and practical examples, this document helps users understand the capabilities and advantages of the LM20 and how it can be utilized in various temperature sensing applications.
LM20
www.ti.com
SNIS106Q –DECEMBER 1999–REVISED JANUARY 2015
Electrical Characteristics: LM20B (continued)
Unless otherwise noted, these specifications apply for V
+
= 2.7 V
DC
. All limits T
A
= T
J
= T
MIN
to T
MAX
, unless otherwise noted.
PARAMETER TEST CONDITIONS MIN
(1)
TYP
(2)
MAX
(1)
UNIT
Non-linearity
(4)
–20°C ≤ T
A
≤ 80°C ±0.4%
Sensor Gain (Temperature Sensitivity or
Average Slope) to equation:
–30°C ≤ T
A
≤ 100°C –12.2 –11.77 –11.4 mV/°C
V
O
=−11.77 mV / °C×T+1.860 V
Output Impedance Sourcing I
L
0 μA to 16 μA
(5)(6)
160 Ω
Load Regulation
(7)
Sourcing I
L
0 μA to 16 μA
(3)(6)
–2.5 mV
2.4 V ≤ V
+
≤ 5.0 V 3.3 mV/V
Line Regulation
(8)
5.0 V ≤ V
+
≤ 5.5 V 11 mV
2.4 V ≤ V
+
≤ 5.0 V; T
A
= 25°C 4.5 7 μA
Quiescent Current 5.0 V ≤ V
+
≤ 5.5 V; T
A
= 25°C 4.5 9 μA
2.4 V ≤ V
+
≤ 5.0 V 4.5 10 μA
Change of Quiescent Current 2.4 V ≤ V
+
≤ 5.5 V 0.7 μA
Temperature Coefficient of Quiescent
–11 nA/°C
Current
Shutdown Current V
+
≤ 0.8 V 0.02 μA
(4) Non-linearity is defined as the deviation of the calculated output-voltage-versus-temperature curve from the best-fit straight line, over the
temperature range specified.
(5) The LM20 can at most sink 1 μA and source 16 μA.
(6) Load regulation or output impedance specifications apply over the supply voltage range of 2.4 V to 5.5 V.
(7) Regulation is measured at constant junction temperature, using pulse testing with a low duty cycle. Changes in output due to heating
effects can be computed by multiplying the internal dissipation by the thermal resistance.
(8) Line regulation is calculated by subtracting the output voltage at the highest supply input voltage from the output voltage at the lowest
supply input voltage.
6.6 Electrical Characteristics: LM20C
Unless otherwise noted, these specifications apply for V
+
= 2.7 V
DC
. All limits T
A
= T
J
= T
MIN
to T
MAX
, unless otherwise noted.
PARAMETER TEST CONDITIONS MIN
(1)
TYP
(2)
MAX
(1)
UNIT
T
A
= 25°C to 30°C –4 5 °C
T
A
= 130°C –5 5 °C
T
A
= 125°C –5 5 °C
T
A
= 100°C –4.7 4.7 °C
Temperature to Voltage Error
T
A
= 85°C –4.6 4.6 °C
V
O
= (−3.88×10
−6
× T
2
) + (−1.15×10
−2
×
T
A
= 80°C –4.5 4.5 °C
T) + 1.8639 V
(3)
T
A
= 0°C –4.4 4.4 °C
T
A
= –30°C –4.7 4.7 °C
T
A
= –40°C –4.8 4.8 °C
T
A
= –55°C –5.0 5.0 °C
Output Voltage at 0°C 1.8639 V
Variance from Curve ±1.0 °C
Non-Linearity
(4)
–20°C ≤ T
A
≤ 80°C ±0.4%
Sensor Gain (Temperature Sensitivity or
Average Slope) to equation:
–30°C ≤ T
A
≤ 100°C –12.6 –11.77 –11.0 mV/°C
V
O
=−11.77 mV / °C×T+1.860 V
Output Impedance Sourcing I
L
0 μA to 16 μA
(5)(6)
160 Ω
(1) Limits are ensured to TI's AOQL (Average Outgoing Quality Level).
(2) Typicals are at T
J
= T
A
= 25°C and represent most likely parametric norm.
(3) Accuracy is defined as the error between the measured and calculated output voltage at the specified conditions of voltage, current, and
temperature (expressed in °C).
(4) Non-linearity is defined as the deviation of the calculated output-voltage-versus-temperature curve from the best-fit straight line, over the
temperature range specified.
(5) The LM20 can at most sink 1 μA and source 16 μA.
(6) Load regulation or output impedance specifications apply over the supply voltage range of 2.4 V to 5.5 V.
Copyright © 1999–2015, Texas Instruments Incorporated Submit Documentation Feedback 5
Product Folder Links: LM20
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