REF1933AIDDCT Part Information
Details for REF1933AIDDCT by Texas Instruments
Electronic & Electrical Components > Semiconductors - ICs > Power Management
Part Description
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.
Part Downloads
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Part Features
- 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
Part Specifications
| 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 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