Texas Instruments REF2940AIDBZR, Series Voltage Reference, Fixed 4.096 V Output, ±2% Tolerance, 25 mA Output, SOT-23-3 Package, -40°C to 125°C.
| Parameter | Value |
|---|---|
| Output type | Fixed |
| Mounting | Surface Mount |
| Reference type | Series |
| Voltage - input | 4.146V ~ 5.5V |
| Voltage - output (Min (Fixed)) | 4.096V |
| Output current | 25 mA |
| Current - supply | 59µA |
| Operating temperature | -40°C ~ 125°C (TA) |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| Tolerance | ±2% |
| Case | TO-236-3, SC-59, SOT-23-3 |
| Noise - 0.1Hz to 10Hz | 45µVp-p |
| Noise - 10Hz to 10kHz | 128µVrms |
| Temperature coefficient | 100ppm/°C |
The Texas Instruments REF2940AIDBZR is a series voltage reference with a fixed 4.096 V output, ±2% initial tolerance, and 25 mA output current capability. It operates from a 4.146 V to 5.5 V input rail and draws 59 µA quiescent supply current.
The 25 mA output current is the maximum the reference can source.
The REF2940AIDBZR and REF2940AIDBZT share the same electrical specifications and SOT-23-3 package. The difference is the shipping medium — Tape & Reel vs. Cut Tape. Electrically they are identical, so the BZR variant can replace the BZT in the same design.
The LM4132AMF-4.1/NOPB is a higher-precision series reference with ±0.05% tolerance and 20 ppm/°C drift, compared to the REF2940AIDBZR's ±2% and 100 ppm/°C. Both are 4.096 V fixed outputs in SOT-23-3 packages, but the LM4132 is a tighter-grade part for applications requiring better accuracy. The REF2940AIDBZR is the cost-optimized option for designs that can tolerate ±2% initial error.