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Devices offer high accuracy and excellent low temperature drift
Texas Instruments Incorporated today introduced a family of low-power series voltage references featuring high accuracy (+/-0.15 percent max) and low temperature drift (30ppm/°C max) in a SC70-3 package – 40% smaller than a SOT23. The combination of micro-size packaging and low current consumption make the REF33xx family suitable for portable and battery-powered consumer applications, and its high accuracy and low temperature drift make it a good choice for medical equipment, handheld instrumentation, test equipment and data acquisition systems.
High initial accuracy, low noise (28uVpp/V output) and a robust output drive of +/-5mA enable precision, low power ADC (such as ADS1000 and ADS7866) and MSP430 applications. The low temperature drift minimizes system error over temperature. Additionally, the low dropout voltage of 110mV (typ, 25°C) supports precision spot voltage regulation for battery-powered applications.
The REF33xx family offers six output voltages: 1.25V (REF3312), 1.8V (REF3318), 2.048V (REF3320), 2.5V (REF3325), 3.0V (REF3330) and 3.3V (REF3333). The devices can operate at a supply voltage 110mV above the output voltage under specified load conditions, except the REF3312 which requires a minimum supply voltage of 1.8V. All models in this family are designed for the wide industrial temperature range of -40°C to 125°C.
The six versions of the REF33xx family are available now in SOT23-3 and SC70-3 packages from TI and its authorized distributors. The devices are priced at US$0.85 in 1,000-piece quantities.
TI offers analog engineers a wide-ranging support infrastructure that includes training and seminars, design tools and utilities, technical documentation, evaluation modules, an online KnowledgeBase, a product information hotline and a comprehensive offering of samples that ship within 24 hours of request.
ABOUT TEXAS INSTRUMENTS
Texas Instruments Incorporated provides innovative DSP and analog technologies to meet our customers’ real world signal processing requirements. In addition to Semiconductor, the company includes the educational and productivity solutions business. TI is headquartered in Dallas, Texas, and has manufacturing, design or sales operations in more than 25 countries.
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