MOSFET transistor addresses high temperature sensor interfaces
An 80V small signal transistor has been launched to address high temperature sensor interfaces such as piezoelectric sensors or to implement a guard amplifier.
Cissoid's 'Mercury' mosfet transistor is part of its Planet range of high temperature transistors and switches. According to Cissoid, the 80V small signal N-channel device has an operating temperature range from -55 to +225°C. The device has an input capacitance of 32pF and its gate leakage is limited to 5.6µA at 225°C.
Referenced as CHT-SNMOS80, Mercury features logic level mosfet sinks up to 230mA at 225°C and can also be used to switch medium or high resistances, for example to convert a 3.3/5V logic signal to a high voltage open drain output with turn on/off times lower than 5ns.
With the gate tied to the source, Cissoid says that Mercury can be used as an 80V small current diode for high reliability at high temperature.
