LLSD103A-7 Datasheet, PDF (1/18 Pages) Texas Instruments – LM20 2.4V, 10μA, SC70, DSBGA Temperature Sensor

LM20
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SNIS106P – DECEMBER 1999 – REVISED FEBRUARY 2013
LM20 2.4V, 10µA, SC70, DSBGA Temperature Sensor
Check for Samples: LM20
FEATURES
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•2 Rated for full −55°C to +130°C range
• Available in an SC70 and DSBGA package
• Predictable Curvature Error
• Suitable for Remote Applications
APPLICATIONS
• Cellular Phones
• Computers
• Power Supply Modules
• Battery Management
• FAX Machines
• Printers
• HVAC
• Disk Drives
• Appliances
KEY SPECIFICATIONS
• Accuracy at 30°C ±1.5 to ±4 °C (max)
• Accuracy at 130°C and −55°C ±2.5 to ±5 °C
(max)
• Power Supply Voltage Range 2.4 to 5.5 V
• Current Drain 10 μA (max)
• Nonlinearity ±0.4% (typ)
• Output Impedance 160 Ω (max)
• Load Regulation
0 μA < I_L< 16 μA −2.5 mV (max)
DESCRIPTION
The LM20 is a precision analog output CMOS
integrated-circuit temperature sensor that operates
over a −55°C to 130°C temperature range. The
power supply operating range is 2.4 V to 5.5 V. The
transfer function of LM20 is predominately linear, yet
has a slight predictable parabolic curvature. The
accuracy of the LM20 when specified to a parabolic
transfer function is ±1.5°C at an ambient temperature
of 30°C. The temperature error increases linearly and
reaches a maximum of ±2.5°C at the temperature
range extremes. The temperature range is affected
by the power supply voltage. At a power supply
voltage of 2.7 V to 5.5 V the temperature range
extremes are 130°C and −55°C. Decreasing the
power supply voltage to 2.4 V changes the negative
extreme to −30°C, while the positive remains at
130°C.
The LM20 quiescent current is less than 10 μA.
Therefore, self-heating is less than 0.02°C in still air.
Shutdown capability for the LM20 is intrinsic because
its inherent low power consumption allows it to be
powered directly from the output of many logic gates
or does not necessitate shutdown at all.
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2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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