REF1933AIDDCT Semiconductors - ICs by Texas Instruments


Status: Unknown
Series: REF1933 Series
RoHS: Unknown
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Applications with only a positive supply voltage often require an additional stable voltage in the middle of the analog-to-digital converter (ADC) input range to bias input bipolar signals. The REF19xx provides a reference voltage (VREF) for the ADC and a second highly-accurate voltage (VBIAS) that can be used to bias the input bipolar signals. The REF19xx offers excellent temperature drift (25 ppm/°C, max) and initial accuracy (0.1%) on both the VREF and VBIAS outputs while operating at a quiescent current less than 430 µA. In addition, the VREF and VBIAS outputs track each other with a precision of 6 ppm/°C (max) across the temperature range of –40°C to 85°C. All these features increase the precision of the signal chain and decrease board space, while reducing the cost of the system as compared to a discrete solution. Extremely low dropout voltage of only 10 mV allows operation from very low input voltages, which can be very useful in battery-operated systems. Both the VREF and VBIAS voltages have the same excellent specifications and can sink and source current equally well. Very good long-term stability and low noise levels make these devices ideally-suited for high-precision industrial applications.
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Voltage Reference Type Series - Fixed
Product Range REF1933 Series
Reference Voltage 3.3V
Initial Accuracy 0.1%
Temperature Coefficient ± 10ppm/°C
Voltage Reference Case Style SOT-23
No. of Pins 5Pins
Operating Temperature Min -40°C
Operating Temperature Max 125°C
Automotive Qualification Standard -
RoHS Phthalates Compliant Yes
MSL MSL 2 - 1 year
SVHC No SVHC (27-Jun-2018)
Input Voltage Max 5.5V
Input Voltage Min 3.32V
Reference Volts 3.3V

Alternative Descriptions

3.3-V Vref, dual-output Vref & Vref/2 voltage reference | Texas Instruments
Voltage Ref, Series, 3.3V, Sot-23-5 | Newark Electronics

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The REF1933AIDDCT is listed under Electronic & Electrical Components > Semiconductors - ICs > Power Management.

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