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Texas Instruments REF2025QDDCRQ1
- Part No.:
- REF2025QDDCRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
REF2025QDDCRQ1.pdf
- Description:
- IC VREF SERIES 0.05% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:7,038
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Product details
Overview
REF2025QDDCRQ1 from Texas Instruments is an AEC-Q100 Grade 1 qualified dual-output voltage reference IC delivering precise VREF = 2.5 V and VBIAS = 1.25 V outputs for automotive signal conditioning. It features ±0.05% initial accuracy, 8 ppm/°C max temperature drift over –40°C to +125°C, 7 ppm/°C max VREF–VBIAS tracking, ±20 mA output current capability, and 10 mV dropout-enabling high-precision ADC biasing in battery management systems and motor control.
For engineers reviewing the REF2025QDDCRQ1 datasheet, REF2025QDDCRQ1 pinout, REF2025QDDCRQ1 application, or REF2025QDDCRQ1 equivalent, this page delivers verified specifications, SOT23-5 package details, automotive-grade thermal and ESD performance data, and real-world functional safety design support-not generic timing or power references.
Technical Context
The REF2025QDDCRQ1 implements a band-gap core with e-Trim™ package-level calibration to achieve simultaneous high initial accuracy and low drift on both outputs. Its dual-buffer architecture derives VBIAS = VREF / 2 from the same reference node, enabling tight 7 ppm/°C tracking across temperature.
It operates in active mode (EN ≥ VIN – 0.7 V) with 360 µA quiescent current and enters shutdown (≤5 µA) when EN is low. The device supports bidirectional ±20 mA loading on both outputs while maintaining 3 ppm/V line regulation and 8 ppm/mA load regulation-critical for stable ADC reference and biasing under varying supply and load conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VREF Output | 2.5 V ±0.05% - provides primary ADC reference voltage with guaranteed accuracy at power-up |
| VBIAS Output | 1.25 V ±0.05% - exact half of VREF, used to bias bipolar analog inputs in single-supply ADC systems |
| Temp Drift (VREF/VBIAS) | ±8 ppm/°C max (–40°C to +125°C) - ensures < ±0.01% total error over full automotive ambient range |
| VREF–VBIAS Tracking | ±7 ppm/°C max - guarantees matched thermal behavior, preserving mid-scale bias point accuracy |
| Output Current | ±20 mA per output - supports direct driving of ADC reference inputs and op-amp bias networks without external buffers |
| Dropout Voltage | 10 mV at 20 mA - enables operation from supplies as low as 2.51 V, critical for low-voltage battery monitoring |
| Quiescent Current | 360 µA typical - minimizes system standby power in always-on telematics and gateway modules |
Pinout & Package
SOT23-5 (DDC) package: 2.90 mm × 1.60 mm body, surface-mount, thermally enhanced plastic case with exposed pad not present.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VBIAS | Output | Provides 1.25 V reference voltage (VREF / 2); sinks/sources ±20 mA; matches VREF drift within 7 ppm/°C |
| 2 - GND | Reference | Analog ground return for both outputs; must be low-impedance connection to minimize noise coupling |
| 3 - EN | Digital Input | Active-high enable: device enabled when EN ≥ VIN – 0.7 V; pulls outputs to high-Z and reduces ICC to ≤5 µA when low |
| 4 - VIN | Power Input | Supply input (2.52 V min to 5.5 V max); powers internal band-gap and buffers; dropout only 10 mV at full load |
| 5 - VREF | Output | Primary 2.5 V reference output; identical accuracy, drift, and regulation specs as VBIAS; drives ADC REF+ pins directly |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation, HBM ±2.5 kV, CDM ±1.5 kV - meets automotive reliability requirements |
| e-Trim™ calibration | Package-level trimming after molding corrects for die stress and transistor mismatch - achieves ±0.05% initial accuracy and 8 ppm/°C drift |
| Dual-output tracking architecture | VBIAS derived from same band-gap node as VREF via precision resistor divider - enables 7 ppm/°C matching without external components |
| Low-noise, high-stability outputs | 12 ppmPP (0.1–10 Hz), 0.25 ppm/√Hz noise density, and 25 ppm long-term stability (1000 hrs) - suitable for 16-bit+ precision systems |
| Robust load regulation | 8 ppm/mA sourcing/sinking - maintains voltage accuracy despite dynamic ADC input current transients up to ±20 mA |
Applications
| Battery Management Systems | Motor Control Inverters |
|---|---|
|
Use Scenario: Monitoring cell voltages and pack current in 48 V mild-hybrid BEV battery packs using single-supply SAR ADCs. IC Role / Device Role / Timing Role: REF2025QDDCRQ1 supplies 2.5 V reference and 1.25 V mid-rail bias to enable bipolar sensing of shunt-based current signals. Use Value: Tight 7 ppm/°C VREF–VBIAS tracking preserves ADC common-mode accuracy across under-hood temperature swings, reducing calibration frequency. |
Use Scenario: Providing reference and bias voltages for isolated gate-driver feedback and phase-current sensing in traction inverters. IC Role / Device Role / Timing Role: REF2025QDDCRQ1 delivers stable 2.5 V and 1.25 V to precision delta-sigma modulators and isolated amplifiers in high-noise power stages. Use Value: 10 mV dropout allows operation from auxiliary 3.3 V rails during start-stop events, ensuring uninterrupted current measurement during voltage sag. |
| Automotive Telematics Gateways | On-Board Chargers (OBC) |
|
Use Scenario: Conditioning analog sensor inputs (e.g., cabin pressure, humidity) in always-on LTE/GNSS gateways with strict power budgets. IC Role / Device Role / Timing Role: REF2025QDDCRQ1 operates in low-power active mode (360 µA) to supply reference/bias for multi-channel ADCs during sleep states. Use Value: 360 µA quiescent current and EN-controlled shutdown reduce system standby power by >98% versus discrete solutions. |
Use Scenario: Calibrating voltage and current feedback loops in bidirectional AC/DC OBCs where precision impacts charging efficiency and grid compliance. IC Role / Device Role / Timing Role: REF2025QDDCRQ1 serves as master reference for isolated voltage dividers and shunt amplifier gain-setting networks. Use Value: ±0.05% initial accuracy and 25 ppm long-term stability eliminate field recalibration needs over 10-year vehicle lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF2030QDDCRQ1 | VREF = 3.0 V, VBIAS = 1.5 V; otherwise identical specs (drift, accuracy, package, EN function) | Requires redesign of ADC reference input network and biasing resistors for 3 V full-scale systems | Select when system uses 3 V ADCs or higher headroom is needed for rail-to-rail input stages |
| ADR4525BRZ-R7 | Single-output 2.5 V reference only; no VBIAS; ±0.02% initial accuracy; 3 ppm/°C drift; SOIC-8 package | Requires external resistor divider and buffer to generate VBIAS, increasing board area, cost, and thermal drift error | Choose only if ultra-low drift (<3 ppm/°C) is mandatory and space/cost allow discrete VBIAS generation |
Compared with REF2030QDDCRQ1, REF2025QDDCRQ1 enables direct compatibility with 2.5 V ADCs without level-shifting; compared with ADR4525BRZ-R7, it eliminates external components and matching errors required to replicate VBIAS functionality-reducing BOM count and improving thermal tracking.
Availability
REF2025QDDCRQ1 is available at Aetrix Electronics and suitable for battery management systems, motor control inverters, and automotive telematics gateways requiring stable component supply with AEC-Q100 compliance and functional safety documentation support.
Supply support for REF2025QDDCRQ1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of automotive-grade product development and manufacturing expertise.
The REF20xx-Q1 product line was designed specifically for high-precision, single-supply automotive signal chains-delivering tightly tracked dual reference outputs to simplify ADC biasing while meeting AEC-Q100 Grade 1 and functional safety requirements.
FAQ
What is the maximum operating temperature range for the REF2025QDDCRQ1?
The REF2025QDDCRQ1 is qualified per AEC-Q100 Grade 1 with an ambient operating temperature range of –40°C to +125°C. Its junction temperature must not exceed 150°C under any condition, and thermal design must account for its 193.6°C/W junction-to-ambient resistance in the SOT23-5 package.
Does the REF2025QDDCRQ1 require an external capacitor for stability?
No, the REF2025QDDCRQ1 is internally compensated and stable with output capacitors from 0 µF to 10 µF. Unlike many references, it does not require a minimum external capacitor-enabling direct connection to ADC reference inputs without added components or layout constraints.
How does the EN pin function on the REF2025QDDCRQ1?
The EN pin is an active-high digital input: the REF2025QDDCRQ1 operates normally when EN ≥ VIN – 0.7 V, and enters shutdown mode (ICC ≤ 5 µA, outputs high-Z) when EN is pulled below 0.7 V. No external pull-up is required, but logic-level compatibility with host MCU GPIO must be verified.
Can the REF2025QDDCRQ1 drive both VREF and VBIAS loads simultaneously at full current?
Yes-the REF2025QDDCRQ1 supports ±20 mA on each output independently. Both VREF and VBIAS can source or sink their full rated current simultaneously without degrading accuracy, drift, or regulation, as confirmed in Section 7.5 Electrical Characteristics of the datasheet.
Is functional safety documentation available for the REF2025QDDCRQ1?
Yes, Texas Instruments provides functional safety documentation-including FMEDA reports and safety manuals-for the REF2025QDDCRQ1 to support ISO 26262 ASIL-B system-level development. This documentation is accessible via TI's official product folder and requires registration on ti.com.
REF2025QDDCRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- -
- Current - Output:
- 20 mA
- Tolerance:
- ±0.05%
- Temperature Coefficient:
- 8ppm/°C
- Noise - 0.1Hz to 10Hz:
- 12ppmp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 2.23V ~ 5.5V
- Current - Supply:
- 460µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-THIN
REF2025QDDCRQ1 FAQ
1.How can I place an order for REF2025QDDCRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for REF2025QDDCRQ1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for REF2025QDDCRQ1 reliable?
The price and inventory of REF2025QDDCRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for REF2025QDDCRQ1 is usually 5 days.
3.What payment methods are accepted for REF2025QDDCRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for REF2025QDDCRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for REF2025QDDCRQ1?
REF2025QDDCRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your REF2025QDDCRQ1 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for REF2025QDDCRQ1?
For technical support, including REF2025QDDCRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your REF2025QDDCRQ1 requirements.
6.How does Aetrix verify that REF2025QDDCRQ1 is sourced from the original manufacturer or authorized distributors?
All REF2025QDDCRQ1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that REF2025QDDCRQ1 meets industry standards.
7.What is the process for return or replacement of REF2025QDDCRQ1?
All REF2025QDDCRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with REF2025QDDCRQ1, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The REF2025QDDCRQ1 part is unused and in its original packaging.
Return procedure for REF2025QDDCRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
REF2025QDDCRQ1 Tags
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TL431AIDBZR
Texas Instruments
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TL431BQDBZR
Texas Instruments
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AN431AN-ATRG1
Diodes Incorporated
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LM4040CYM3-2.5-TR
Microchip Technology
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LM4040CYM3-4.1-TR
Microchip Technology
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LM4040EIM3-2.5/NOPB
Texas Instruments
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AZ431LBNTR-G1
Diodes Incorporated
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LM4040D20IDBZR
Texas Instruments
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LM4041DIM3-ADJ/NOPB
Texas Instruments
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LM4040DIM3X-2.5/NOPB
Texas Instruments
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LM4040DIM3-2.5/NOPB
Texas Instruments
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AZ431LANTR-G1
Diodes Incorporated
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