The Polaris CHT-BG3M high temperature voltage reference series from Cissoid offers a voltage reference range between 2.5V and 12V. These voltage references are compatible with high temperature environments with a typical operation temperature range from -55°C to +225°C. The CHT-BG3M series from Cissoid has a minimum dropout voltage of 1.5V with a load current lower than 1mA and 2.5V at 3mA load current (for CHT-BG3M-025, min dropout is 2V @ 1mA and 3V @ 3mA), with a total accuracy of ±2% and a maximum drift with temperature of 70ppm.

• High temperature voltage reference
• Voltage reference values of 2.5V, 3.3V, 5V, 9V, 10V and 12V
• Dropout voltage at 1mA is 1.5V to 15V (CHT-BG3M-025 min dropout is 2V)
• Dropout voltage at 3mA is 2.5V to 15V (CHT-BG3M-025 min dropout is 3V)
• Quiescent current consumption of 700µA
• Maximum output current of 3mA at 225°C
• Total accuracy of ±2%
• Typical operating temperature range −55°C to +225°C
• Maximum drift with temperature 70ppm
• Validated at +225°C for 30000 hours (and still on-going)
• Available in TO-39 package (other packages available on request)

Typical Applications for the CHT-BG3M series from Cissoid include:

• Well logging
• Automotive
• Aeronautics
• Aerospace

The below table gives the full specifications of the Cissoid CHT-BG3M series:

1. For CHT-BG3M-025, min dropout is 2V at 1mA and 3V at 3mA

2. Input voltage cannot exceed 25V

3. ppm are defined as [d(Vout)/d(T)]/Vout. For 5V mode, 70ppm corresponds to 350µV/°C

4. Defining “x” as the nominal voltage, the line regulation is better than x/5 mV/V

5. Defining “x” as the nominal voltage, the minimum power supply rejection ratio is 66-1.2x.db

6. Defining “x” as the nominal voltage, typical noise level is (x/5)*240µVRMS