Linear thermistors offer linearity and consistent sensitivity across temperature to enable simple and accurate methods for temperature conversion. Low power consumption and a small thermal mass minimize the impact of self-heating. With built-in failsafe behavior at high temperatures and powerful immunity to environmental variation, these devices are designed for a long lifetime of high performance. The small size of the TMP6 series also allows for close placement to heat sources and quick response times. Take advantage of benefits over NTC thermistors such as no extra linearization circuitry, minimized or no calibration altogether, less resistance tolerance variation, and simplified conversion methods to save time and memory in the MCU.

The two TMP63 are directly excited by the programmable current source module inside the SCE, enabling very small form factor, ultra low-cost temperature measurement solution.

The TMP63 silicon linear thermistor has a linear positive temperature coefficient (PTC) that results in a uniform and consistent temperature coefficient resistance (TCR) across a wide operating temperature range. TI uses a special silicon process where the doping level and active region areas devices control the key characteristics (the temperature coefficient resistance (TCR) and nominal resistance (R25)) . The device has an active area and a substrate due to the polarized terminals. Connect the positive terminal to the highest voltage potential. Connect the negative terminal to the lowest voltage potential. Unlike an NTC, which is a purely resistive device, the TMP63 resistance is affected by the current across the device and the resistance changes when the temperature changes.

The TMP63 is a cost-effective, small size replacement precision NTC and PTC thermistors with accuracy specified as:

• ±1% maximum (0 °C to 70 °C)
• 0.3% typical long term sensor drift

TMP63 delivers multiple benefits over NTC thermistors such as no extra linearization circuitry, minimized calibration, less resistance tolerance variation, and simplified conversion methods to save time and memory in the microcontroller.

The TMP63 is currently available in a 0402 footprint-compatible X1SON package, which makes it an ideal solution for sub-metering applications such as HCAs.

TLV2333 Dual, 350-kHz, Low-Noise, RRIO, CMOS Operational Amplifier for Cost-Sensitive Systems

The TLVx333 series of CMOS operational amplifiers offer precision performance at a competitive price. These devices are members of the zero-drift family of amplifiers that uses a proprietary auto calibration technique to simultaneously provide low offset voltage (15μV, max) and near-zero drift over time and temperature at only 28μA (max) of quiescent current. The TLVx333 family features rail to-rail input and output in addition to near-flat 1/f noise, making this amplifier ideal for many applications and much easier to design into a system. These devices are optimized for low-voltage operation as low as 1.8V (±0.9V) and up to 5.5V (±2.75V). The TLV333 (single version) is available in the SC70 5, SOT23-5, and SOIC-8 packages. The TLV2333 (dual version) is offered in VSSOP-8 and SOIC-8 packages. The TLV4333 is offered in the standard SOIC-14 and TSSOP-14 packages. All versions are specified for operation from–40°C to +125°C.