austriamicrosystems Launches Low-Voltage Microprocessor Supervisory Circuits
austriamicrosystems has expanded its supervisory portfolio with the AS1907-09 family of microprocessor supervisory ICs. The new family is suitable for monitoring the supply voltages of 1.8 to 3.3V systems.
"These small, low-power microprocessor reset circuits require no external components and consume only 2.4µA of quiescent current which makes the AS1907-09 family ideal for portable and battery-powered equipment, computers, intelligent instruments, critical µP and µC power monitoring, controllers and automotive applications," said Walter Moshammer, Marketing Director Standard Linear at austriamicrosystems.
The AS1907-09 family devices monitor the supply voltage of digital systems and microprocessors and initiate a reset if the voltage decreases below a certain threshold. The reset threshold itself has an accuracy of ±0.9%. Reset thresholds from +1.6 to +2.5V are available in approximately 100mV increments. Each device is available with three minimum reset timeout period options of 1, 20, or 100ms.
The product family offers three devices with different output drivers. The AS1907 has a push-pull driver with an active low reset. The AS1908 uses the same output stage, but has an active high reset. The AS1909 has an open drain output with an active low reset. The AS1907-09 family works with a supply voltage range from 0.7 to 3.6V and the reset output itself is guaranteed to be valid down to 0.7V (AS1907/08) or 1.0V (AS1909).
The devices are available in a small 3-pin SOT23 package, suitable for operating environments ranging from -40 to +125°C which also makes these reset circuits suitable for industrial applications.
