Overview
The TMP235A4DCKR is a precision CMOS integrated-circuit linear analog temperature sensor produced by Texas Instruments. It is part of the TMP23x family, designed for multiple analog temperature-sensing applications. This device offers high accuracy and a wide operating temperature range, making it a cost-effective alternative to passive thermistors. The TMP235A4DCKR provides a positive slope output of 10 mV/°C over the full –40°C to +150°C temperature range and operates with a supply voltage range from 2.3 V to 5.5 V.
Key Specifications
| Parameter | Min | Typical | Max | Unit |
|---|---|---|---|---|
| Operating Temperature Range | –40°C | +150°C | °C | |
| Supply Voltage Range | 2.3 V | 5.5 V | V | |
| Operating Current (at 25°C, VDD = 2.3 V) | 9 µA | 9 µA | 14.5 µA | µA |
| Temperature Accuracy (–40°C to +150°C) | –2.5°C | ±0.5°C (typical at 0°C to 70°C) | +2.5°C | °C |
| Sensor Gain | 10 mV/°C | mV/°C | ||
| Output Voltage Offset at 0°C | 500 mV | mV | ||
| Output Current | 500 µA | µA | ||
| Output Impedance (at 100 µA, 100 Hz) | 20 Ω | Ω | ||
| Package Options | 5-pin SC70 (DCK), 3-pin SOT-23 (DBZ) |
Key Features
- Tight accuracy across a wide temperature range: ±2.5°C (maximum) from –40°C to +150°C.
- Positive slope sensor gain: 10 mV/°C, with an output voltage offset of 500 mV at 0°C.
- Wide operating supply voltage range: 2.3 V to 5.5 V.
- Short-circuit protected output.
- Low power consumption: 9 µA (typical).
- Strong output for driving loads up to 1000 pF.
- Available in 5-pin SC70 (DCK) and 3-pin SOT-23 (DBZ) surface mount packages, footprint compatible with industry-standard LMT8x-Q1 and LM20 temperature sensors.
Applications
- Grid infrastructure.
- Wireless and telecom infrastructure.
- Automotive infotainment.
- Factory automation and control.
- Test and measurement.
Q & A
- What is the operating temperature range of the TMP235A4DCKR? The operating temperature range is from –40°C to +150°C.
- What is the supply voltage range for the TMP235A4DCKR? The supply voltage range is from 2.3 V to 5.5 V.
- What is the typical operating current of the TMP235A4DCKR at 25°C? The typical operating current is 9 µA at 25°C with a supply voltage of 2.3 V.
- What is the temperature accuracy of the TMP235A4DCKR? The temperature accuracy is ±2.5°C (maximum) from –40°C to +150°C, with a typical accuracy of ±0.5°C from 0°C to 70°C.
- What is the sensor gain of the TMP235A4DCKR? The sensor gain is 10 mV/°C.
- What is the output voltage offset at 0°C for the TMP235A4DCKR? The output voltage offset at 0°C is 500 mV.
- Can the TMP235A4DCKR drive capacitive loads? Yes, it can drive capacitive loads up to 1000 pF with a maximum output current of 500 µA.
- What are the available package options for the TMP235A4DCKR? The available package options are 5-pin SC70 (DCK) and 3-pin SOT-23 (DBZ) surface mount packages.
- Is the TMP235A4DCKR footprint compatible with other temperature sensors? Yes, it is footprint compatible with industry-standard LMT8x-Q1 and LM20 temperature sensors.
- What are some typical applications of the TMP235A4DCKR? Typical applications include grid infrastructure, wireless and telecom infrastructure, automotive infotainment, factory automation and control, and test and measurement.
