Overview
The TMP20AIDCKR, produced by Texas Instruments, is a precision analog output temperature sensor. This device is available in a compact SOT-563 or SC70 package, making it ideal for applications where space is limited. The TMP20 operates over a wide temperature range of –55°C to +130°C and can be powered by a supply voltage of 2.7 V to 5.5 V, with the option to operate at as low as 1.8 V for temperatures between 15°C and 130°C. It features a low quiescent current of 4 µA, minimizing self-heating and power consumption. The device is designed for high accuracy, with a ±2.5°C accuracy across its entire specified temperature range.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (V+) | 1.8 | - | 5.5 | V |
| Operating Temperature Range | –55 | - | 130 | °C |
| Junction Temperature (TJ) | - | - | 150 | °C |
| Storage Temperature Range | –65 | - | 150 | °C |
| Quiescent Current (IQ) | - | 2.6 | 4 | µA |
| Shutdown Current (ISD) | - | 20 | - | nA |
| Output Voltage Slope | -11.79 | -11.77 | -11.67 | mV/°C |
| Output Voltage at 0°C | - | 1.8639 | - | V |
| Output Resistance | - | 10 | - | Ω |
| Maximum Capacitive Load | - | 1 | - | nF |
Key Features
- Precision analog output temperature sensor with ±2.5°C accuracy across the entire specified temperature range.
- Compact SOT-563 or SC70 package, reducing board space requirements.
- Low power consumption with a quiescent current of 4 µA (maximum) and shutdown current of less than 20 nA.
- Wide operating temperature range of –55°C to +130°C.
- Supply voltage range of 2.7 V to 5.5 V, with operation possible at 1.8 V for temperatures between 15°C and 130°C.
- Low self-heating due to minimal power consumption.
- High output drive capability, able to source and sink up to 600 µA.
Applications
- HVAC systems for thermal monitoring.
- Disk drives for temperature control.
- Appliances and white goods for temperature sensing.
- Automotive systems for engine and ambient temperature monitoring.
Q & A
- What is the operating temperature range of the TMP20AIDCKR? The TMP20AIDCKR operates over a temperature range of –55°C to +130°C.
- What is the supply voltage range for the TMP20AIDCKR? The device can be powered by a supply voltage of 2.7 V to 5.5 V, with optional operation at 1.8 V for temperatures between 15°C and 130°C.
- What is the quiescent current of the TMP20AIDCKR? The quiescent current is 4 µA (maximum).
- How accurate is the TMP20AIDCKR? The device has a ±2.5°C accuracy across its entire specified temperature range.
- What is the typical output voltage slope of the TMP20AIDCKR? The output voltage slope is typically –11.77 mV/°C.
- Can the TMP20AIDCKR drive capacitive loads? Yes, it can drive up to 1 nF of load capacitance while sourcing and sinking 600 µA.
- What is the recommended layout for the TMP20AIDCKR? The optimal layout involves connecting pin 2 (in the DCK package) to ground for thermal and electrical stability.
- How does the TMP20AIDCKR handle noisy environments? In noisy environments, adding a capacitor from the output to ground with a series resistor can help filter the output.
- What are some common applications of the TMP20AIDCKR? Common applications include HVAC systems, disk drives, appliances, and automotive systems.
- What is the shutdown current of the TMP20AIDCKR? The shutdown current is less than 20 nA when V+ is less than 0.5 V.
