The LM94021 is a precision analog output CMOS integrated-circuit temperature sensor that operates at a supply voltage as low as 1.5V. While operating over the wide temperature range of −50°C to +150°C, the LM94021 delivers an output voltage that is inversely proportional to measured temperature. The LM94021's low supply current makes it ideal for battery-powered systems as well as general temperature sensing applications.
Two logic inputs, Gain Select 1 (GS1) and Gain Select 0 (GS0), select the gain of the temperature-to-voltage output transfer function. Four slopes are selectable: −5.5 mV/°C, −8.2 mV/°C, −10.9 mV/°C, and −13.6 mV/°C. In the lowest gain configuration (GS1 and GS0 both tied low), the LM94021 can operate with a 1
| LM94021 | |
| Supply Voltage (Min) (V) | 1.5 |
| Supply Voltage (Max) (V) | 5.5 |
| Iq (Typ) (uA) | 12 |
| Sensor Type | Local |
| Sensor Gain (mV/Deg C) | -5.5 to -13.6 |
| Local Sensor Accuracy (Max) (+/- C) | 1.5 |
| Output Impedance (Ohm) | 8 |
| Pin/Package | 5SOT |
| Approx. Price (US$) | 0.35 | 1ku |
| Rating | Catalog |