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Product Detailed Parameters
- Description：IC VREF SERIES 0.1% SOT23-5
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Type：Fixed
- Voltage - Output (Min/Fixed)：2.5V
- Voltage - Output (Max)：-
- Current - Output：20 mA
- Operating Temperature：-40°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Package / Case：SOT-23-5 Thin, TSOT-23-5
- Supplier Device Package：SOT-23-THIN
- Grade：-
- Qualification：-
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Overview
The REF1925AIDDCR is a dual-output voltage reference from Texas Instruments, housed in a SOT-23-Thin-5 package. It provides fixed outputs of 1.25 V and 2.5 V with an initial accuracy of 0.1%. The device operates within a temperature range of -40°C to +125°C and features a temperature coefficient of 25 PPM/°C. Maximum input voltage is 5.5 V, with a maximum shunt current of 20 mA and a typical supply current of 360 uA.
Feature Summary
- Dual-output architecture delivering both full reference voltage and half-reference voltage simultaneously
- High precision performance with 0.1% initial accuracy specification
- Low power consumption design suitable for battery-operated applications
Applications
- Data acquisition systems requiring precise voltage references
- Industrial process control instrumentation
- Medical equipment signal conditioning circuits
- Portable test and measurement devices
Procurement Notes
Verify the specific suffix 'DDCR' indicates tape-and-reel packaging when ordering. Confirm that the 0.1% accuracy grade matches system requirements, as other grades may exist. Ensure input voltage does not exceed the 5.5 V maximum limit during operation. Check moisture sensitivity level handling requirements for surface mount assembly processes.
Selection Notes
Select this component when dual output voltages are needed without external resistors. Compare against REF2025 if higher accuracy (0.05%) or lower drift (8 ppm/°C) is required. Consider REF1941 if a single 4.096 V output is sufficient. Verify thermal management needs given the small SOT-23-Thin-5 footprint and operating temperature range up to 125°C.
Part Context
Part of the REF19xx family of low-power voltage references. Shares pinout and form factor with REF1930, REF1933, and REF1941 variants. Designed for space-constrained applications requiring stable reference voltages. Manufactured by Texas Instruments under the PMIC category.
Replacement Considerations
- REF1925AIDDCT (Cut Tape version of same electrical specifications)
- REF2025AIDDCR (Higher accuracy 0.05%, lower drift 8ppm/C)
- REF1930AIDDCR (Different output voltages: 1.5V/3.0V)
FAQ
What is the difference between REF1925AIDDCR and REF1925AIDDCT?
Both parts have identical electrical specifications. The suffix 'R' denotes tape-and-reel packaging, while 'T' denotes cut-tape packaging.
Can the REF1925AIDDCR operate with an input voltage below 2.5V?
No, the minimum input voltage must be sufficient to maintain regulation. The datasheet specifies a maximum input voltage of 5.5V, but the minimum dropout voltage determines the lowest usable input.
