STMicroelectronics Delivers Extra Micropower Choices for Analog Designers

The new device, the TS331, is among ST’s Micropower analog devices, and offers typical current consumption of only 20 microamps, thereby minimizing drain on the battery. In addition, the TS331 can operate from a supply voltage as low as 1.6V, allowing its use in systems designed to operate from low voltages to save overall system power consumption. The device’s rail-to-rail inputs make the chip capable of accepting voltages up to the supply voltage. This capability allows designers to best use the limited dynamic range imposed by low operating voltages, which can otherwise restrict the performance of portable systems.

Further features of the TS331, which come in packages as small as 2.1x2.0x1.0mm, include an extended operating temperature range, from –40°C to +125°C, allowing the device to perform reliably in a wide range of environments and applications including industrial computing equipment and mobile communications infrastructure. The high maximum temperature also allows use in highly miniaturized products where densely populated boards and small sealed fan-less enclosures can cause operating temperatures to rise quickly.

Major features of the TS331:

* 20-microamp current consumption
* 1.6V to 5V supply voltage range
* Rail-to-rail inputs
* Propagation delay of 200ns typical
* Open-drain output
* High ESD tolerance: 2kV HBM / 200V MM
* Surface-mount SC70-5 (2.1x2.0x1.0mm) or SOT23-5 (3.1x3.2x3.45mm) package