ZR12D

PRECISION 1.25 VOLT MICROPOWER VOLTAGE REFERENCE ISSUE 3 - FEBRUARY 1998 DEVICE DESCRIPTION The ZR12D uses a bandgap circuit design to achieve a precision micropower voltage reference of 1.25 volts. The device is available in a small outline SOT23 surface mount package, ideal for applications where space saving is important. The ZR12D design provides a stable voltage without an external capacitor and is stable with capacitive loads. The ZR12D is recommended for operation between 50µA and 5mA and so is ideally suited to low power and battery powered applications. Excellent performance is maintained to an absolute maximum of 25mA, however the rugged design and 20 volt processing allows the reference to withstand transient effects and currents up to 200mA. Superior switching capability allows the device to reach stable operating conditions in only a few microseconds. ZR12D FEATURES Small outline SOT23 package No stabilising capacitor required Typical TC 30ppm/°C Typical slope resistance 0.65Ω ± 3% tolerance Industrial temperature range Operating current 50µA to 5mA Transient response, stable in less than 10µs Alternative package options and tolerances are available APPLICATIONS Battery powered and portable equipment. Metering and measurement systems. Instrumentation. Data acquisition systems. Precision power supplies. Test equipment. SCHEMATIC DIAGRAM V R G nd 4-150 ZR12D ABSOLUTE MAXIMUM RATING Reverse Current Forward Current Operating T...