Description:The VRE3025 series of low cost, zener-based precision Integrated Circuits provides ultra-stable +2.5V output with ±0.25mV (.01%) initial accuracy. This improvement in accuracy is made possible by a unique, proprietary multipoint laser compensation technique. The device also features a buried zener for low noise and excellent long-term stability. Temperature coefficients are as low as 0.6 ppm/°C over the full industrial (0°C to +70°C) or hi-reliability industrial (-40°C to +85°C) temperature range depending
Apex Microtechnology recommends a 4-layer PCB with a solid ground plane, and thermal vias under the device to dissipate heat. A minimum of 2 oz copper thickness is recommended for the top and bottom layers. Additionally, a heat sink or thermal pad can be used to further improve thermal management.
To ensure proper biasing, follow the recommended biasing circuit in the datasheet, and ensure the input voltage is within the specified range. Additionally, use a low-noise, high-PSRR voltage regulator to power the device, and decouple the power supply lines with high-quality capacitors.
The maximum SOA for the VRE3025BD is specified in the datasheet. To prevent overheating, ensure the device is operated within the recommended temperature range, and use a heat sink or thermal pad to dissipate heat. Monitor the device temperature using a thermocouple or thermal sensor, and implement over-temperature protection if necessary.
To minimize EMI and RFI, use a shielded enclosure, and ensure the PCB is properly grounded. Use EMI filters or common-mode chokes on the input and output lines, and keep the device away from high-frequency sources. Additionally, use a low-pass filter or ferrite bead on the power supply lines to reduce high-frequency noise.
Store the device in a dry, cool place, away from direct sunlight and moisture. Handle the device by the body, not the leads, and avoid bending or flexing the leads. Use anti-static packaging and handling procedures to prevent electrostatic discharge (ESD) damage.
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VRE3025BD Overview
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