REF1933AIDDCT Part Information
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.
- Excellent Temperature Drift Performance: u2013 25 ppm/u00b0C (max) from u201340u00b0C to 125u00b0C
- High Initial Accuracy: u00b10.1% (max)
- High Output Current: u00b120 mA
- Line Regulation: 3 ppm/V
- Load Regulation: 8 ppm/mA
- Low Dropout Voltage: 10 mV
- Low Quiescent Current: 360 u03bcA
- Microsize Package: SOT23-5
- Two Outputs, VREF and VREF / 2, for Convenient Use in Single-Supply Systems
- VREF and VBIAS Tracking over Temperature: u2013 6 ppm/u00b0C (max) from u201340u00b0C to 85u00b0C u2013 7 ppm/u00b0C (max) from u201340u00b0C to 125u00b0C
|Voltage Reference Type||Series - Fixed|
|Product Range||REF1933 Series|
|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|
Alternative Part Descriptions
- VOLTAGE REF, SERIES, 3.3V, SOT-23-5; 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 RoHS Compliant: Yes | Newark Electronics
- 3.3-V Vref, dual-output Vref & Vref/2 voltage reference | Texas Instruments
Frequently Asked Questions
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The REF1933AIDDCT is listed under Electronic & Electrical Components > Semiconductors - ICs > Power Management.
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Is the REF1933AIDDCT RoHS compliant?
Yes. This part has been flagged as RoHS Compliant by Farnell.
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Authorised distributors including Newark Electronics and Texas Instruments have stock available or on a lead time for REF1933AIDDCT.
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