1 Features

1• Calibrated Linear Scale Factor of 10 mV/°C

• Rated for Full Temperature Range (–30° to

100°C)

• Suitable for Remote Applications

• UL Recognized Component

• ±2°C or ±3°C Accuracy at 25°C (Maximum)

• ±3°C Accuracy for –25°C to 85°C (Maximum)

• ±4°C Accuracy for –30°C to 100°C (Maximum)

• 10 mV/°C Temperature Slope (Maximum)

• 2.7-V to 10-V Power Supply Voltage Range

• 125-μA Current Drain at 25°C (Maximum)

• ±0.8°C Nonlinearity (Maximum)

• 800-Ω Output Impedance (Maximum)

2 Applications

• Cellular Phones

• Computers

• Power Supply Modules

• Battery Management

• FAX Machines

• Printers

• HVAC

• Disk Drives

• Appliances

3 Description

The LM61 device is a precision, integrated-circuit

temperature sensor that can sense a –30°C to 100°C

temperature range while operating from a single

2.7‑V supply. The output voltage of the LM61 is

linearly proportional to temperature (10 mV/°C) and

has a DC offset of 600 mV. The offset allows reading

negative temperatures without the need for a

negative supply. The nominal output voltage of the

LM61 ranges from 300 mV to 1600 mV for a –30°C to

100°C temperature range. The LM61 is calibrated to

provide accuracies of ±2°C at room temperature and

±3°C over the full –25°C to 85°C temperature range.

The linear output of the LM61, 600-mV offset, and

factory calibration simplify external circuitry required

in a single supply environment where reading

negative temperatures is required. Because the

quiescent current is less than 125 μA, self-heating is

limited to a very low 0.2°C in still air. Shutdown

capability for the LM61 is intrinsic because its

inherent low power consumption allows it to be

powered directly from the output of many logic gates.