FEATURES
• Rated for Full −55°C to +130°C Range
• Available in a TO-92 Package
• Predictable Curvature Error
• Suitable for Remote Applications
• UL Recognized Component

APPLICATIONS
• Cellular Phones
• Computers
• Power Supply Modules
• Battery Management
• FAX Machines
• Printers
• HVAC
• Disk Drives
• Appliances

KEY SPECIFICATIONS
• Accuracy at +30°C ±2.5 °C (max)
• Accuracy at +130°C & −55°C ±3.5 to ±3.8 °C
(max)
• Power Supply Voltage Range +2.4V to +5.5V
• Current Drain 10 μA (max)
• Nonlinearity ±0.4 % (typ)
• Output Impedance 160 Ω (max)
• Load Regulation
– 0μA < IL< +16 μA

DESCRIPTION
The LM19 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 LM19 is predominately linear,
yet has a slight predictable parabolic curvature. The accuracy of the LM19 when specified to a parabolic
transfer function is ±2.5°C at an ambient temperature
of +30°C. The temperature error increases linearly
and reaches a maximum of ±3.8°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 LM19's quiescent current is less than 10 μA.
Therefore, self-heating is less than 0.02°C in still air.
Shutdown capability for the LM19 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.