Dallas, Tex. Texas Instruments Inc. (TI) has introduced a family of low-power (5 uA) voltage references that feature high accuracy (+/-0.15 percent max) and low temperature drift (30 ppm/C maximum) in a SC70-3 package. 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 (28 uVpp/V output) and an output drive of +/-5 mA enable precision, low-power ADC (such as ADS1000 and ADS7866) and MSP430 applications. The low temperature drift minimizes system error over temperature, said TI, and the low dropout voltage of 110 mV (typ, 25°C) supports precision spot voltage regulation for battery-powered applications.
The REF33xx family offers six output voltages: 1.25 V (REF3312), 1.8 V (REF3318), 2.048 V (REF3320), 2.5 V (REF3325), 3.0 V (REF3330) and 3.3 V (REF3333). The devices can operate at a supply voltage 110 mV above the output voltage under specified load conditions, except the REF3312, which requires a minimum supply voltage of 1.8 V. All models in this family are designed to operate over the industrial temperature range of -40°C to 125°C.
Pricing: $0.85 in quantities of 1,000 (suggested resale pricing).
Availability: The six versions of the REF33xx family are available now in SOT23-3 and SC70-3 packages from TI and its authorized distributors.
Product information: REF33xx family and analog design support
Texas Instruments Inc., 1-800-477-892, www.ti.com