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Texas Instruments REF35102YBHR
- Part No.:
- REF35102YBHR
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- 4-XFBGA, DSBGA
- Datasheet:
-
REF35102YBHR.pdf
- Description:
- IC VREF SERIES 1.024V 4XFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:11,995
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Product details
Overview
REF35102YBHR from Texas Instruments is a nanopower, high-precision series voltage reference delivering 1.024V output with ±0.05% initial accuracy, 10ppm/°C max temperature coefficient (−40°C to +85°C), and 650nA typical quiescent current in a 4-pin WCSP package. It serves as a stable excitation source for precision 12–16-bit ADCs and low-power sensor signal chains in portable medical and industrial instrumentation.
For engineers reviewing the REF35102YBHR datasheet, REF35102YBHR pinout, REF35102YBHR application, or REF35102YBHR equivalent, this page delivers verified specifications, WCSP package terminal mapping, real-world use cases in flow transmitters and blood glucose monitors, and two validated alternative options with documented functional trade-offs.
Technical Context
The REF35102YBHR implements a bandgap-based series reference architecture with integrated enable (EN) and noise reduction (NR) terminals, supporting active mode operation down to 650nA and shutdown current of 0.1µA. Its 10ppm/°C tempco (−40°C to +85°C) and 40ppm long-term stability at 1k hour are specified for the YBH WCSP package variant.
It features 3.3ppmP-P (0.1Hz–10Hz) low-frequency noise, 20ppm/mA load regulation (source), and 120mV dropout at 5mA - enabling direct use with low-headroom supplies in battery-powered systems requiring sub-100ppm total error budgets over temperature and time.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.024V ±0.05% (max) - enables precise scaling for 10-bit full-scale ADC references and thermistor bridge excitation. |
| Tempco | 10ppm/°C max (−40°C to +85°C) - ensures ≤85ppm drift across industrial ambient range, critical for uncalibrated field instruments. |
| Quiescent Current | 0.65µA typical (active), 0.1µA (shutdown) - supports >10-year battery life in always-on IoT sensors with periodic wake-up. |
| Noise (0.1–10Hz) | 3.3ppmP-P - contributes <0.001% RMS error in 16-bit SAR ADC conversions with 10µF output capacitance. |
| Load Regulation | 20ppm/mA (source), 40ppm/mA (sink) - maintains stability under dynamic sensor biasing loads up to ±5mA. |
| Dropout Voltage | 120mV at 5mA - allows operation from 1.15V input, compatible with single-cell LiFePO₄ or dual alkaline supplies. |
| Package | 4-pin WCSP (1.05mm × 0.84mm) - provides smallest footprint in REF35 family for space-constrained wearable PCBs. |
Pinout & Package
REF35102YBHR uses a 4-pin Wafer Chip Scale Package (WCSP) with 1.05mm × 0.84mm body size and solder-ball terminations. The package is optimized for minimal board area and thermal performance in high-density layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VREF | Output | Stable 1.024V reference voltage node; requires 0.1–10µF ceramic output capacitor for stability and noise filtering. |
| VIN | Power | Input supply connection; minimum 1.7V (for 1.024V VREF), max 6V; must exceed VREF by ≥VDO (120mV @5mA). |
| GND | Ground | Device ground reference; WCSP pin B1; internal die substrate connection essential for noise and accuracy. |
| EN | Input | Enable control; logic-high (≥0.7×VIN) activates reference; logic-low (≤0.3×VIN) reduces IQ to 0.1µA for ultra-low-power sleep modes. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low IQ | 650nA typical active current enables multi-year operation on coin cells in portable diagnostics equipment. |
| EN pin control | Reduces shutdown current to 0.1µA, allowing microcontroller-gated power cycling without external FETs. |
| NR-capable output | Accepts external capacitor on NR pin (not present on YBH) - but VREF pin itself supports low-noise operation with 10µF COUT. |
| Thermal hysteresis | 70ppm max after −40°C/85°C cycling - ensures repeatable calibration in field-deployed analyzers subject to ambient swings. |
| Long-term stability | 40ppm drift at 1000 hours - supports 5+ year product warranties in medical devices without recalibration. |
Applications
| Flow Transmitter | Blood Glucose Monitor |
|---|---|
Use Scenario: Precision analog front-end for differential pressure sensing in smart water/gas meters with 0.1% flow accuracy requirement. IC Role / Device Role / Timing Role: Provides excitation voltage for Wheatstone bridge and reference for 16-bit delta-sigma ADC. Use Value: 10ppm/°C tempco and 3.3ppmP-P noise ensure <0.05% total error contribution across −25°C to +70°C operating range. |
Use Scenario: Handheld point-of-care device measuring electrochemical current from test-strip biosensors. IC Role / Device Role / Timing Role: Supplies stable bias to transimpedance amplifier and reference for 12-bit SAR ADC digitizing sensor output. Use Value: 650nA IQ extends single-CR2032 battery life beyond 500 tests; WCSP package enables compact 50mm² PCB layout. |
| Servo Drive Control Module | Power Quality Analyzer |
Use Scenario: Closed-loop current sensing in industrial servo inverters using shunt resistors and isolated amplifiers. IC Role / Device Role / Timing Role: Reference for isolated ΣΔ modulator and auxiliary ADC monitoring DC bus voltage and temperature. Use Value: 40ppm long-term stability prevents gain drift-induced torque error accumulation over 10,000-hour service intervals. |
Use Scenario: Portable grid-monitoring tool capturing harmonics and transients with 16-bit resolution at 100kS/s. IC Role / Device Role / Timing Role: Primary reference for simultaneous sampling of voltage and current channels in metrology-grade ADCs. Use Value: 0.05% initial accuracy eliminates need for per-unit factory calibration; EN pin enables synchronized reference activation with sampling trigger. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF34102QDBVR | Higher IQ (3.5µA typ), SOT-23-6 package, 12ppm/°C tempco (−40°C to +105°C), no EN pin. | Requires external enable circuitry; better suited for higher-temp industrial environments where 105°C operation is mandatory. | Select when extended temperature range outweighs battery-life penalty and board area constraints are relaxed. |
| ADR3410ARJZ-R7 | 1.024V output, ±0.1% initial accuracy, 12ppm/°C tempco, 4.5µA IQ, SOT-23-5 package, no EN pin. | Lacks shutdown mode; higher noise (5.5ppmP-P); wider initial tolerance increases post-calibration burden. | Choose for cost-sensitive industrial controls where 0.1% accuracy is acceptable and continuous operation is required. |
Compared with REF35102YBHR, REF34102QDBVR trades 3× higher quiescent current and larger SOT-23 footprint for guaranteed 105°C operation, while ADR3410ARJZ-R7 offers lower cost but sacrifices 0.05% accuracy, 6× higher IQ, and zero power-gating capability - making REF35102YBHR optimal for ultra-low-power, high-accuracy portable instrumentation.
Availability
REF35102YBHR is available at Aetrix Electronics and suitable for flow transmitter calibration, blood glucose monitor production, and power quality analyzer design requiring stable component supply with guaranteed long-term availability and TI-authorized traceability.
Supply support for REF35102YBHR 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 expertise in precision voltage references and low-power signal chain solutions.
The REF35 family was designed specifically for nanopower, high-accuracy applications in portable medical devices, battery-operated sensors, and industrial IoT endpoints where sub-1µA operation and ppm-level stability are mandatory.
FAQ
What is the maximum operating temperature range for REF35102YBHR?
The REF35102YBHR is fully specified from −40°C to +85°C with 10ppm/°C temperature coefficient. It remains functional up to +125°C, though tempco and accuracy degrade outside the rated range. For designs requiring guaranteed 105°C operation, TI recommends the SOT-23 variant REF35102QDBVR instead of REF35102YBHR.
Does REF35102YBHR include a noise reduction (NR) pin?
No, the REF35102YBHR in the YBH WCSP package does not include an NR pin. That feature is only available on the 6-pin SOT-23 variants (e.g., REF35102QDBVR). However, REF35102YBHR achieves 3.3ppmP-P (0.1–10Hz) noise using its optimized die design and recommended 10µF ceramic output capacitor - eliminating need for external NR filtering in most portable applications.
What is the minimum input voltage required for REF35102YBHR?
The minimum input voltage for REF35102YBHR is 1.7V, as specified for VREF = 1.024V outputs. This is higher than the nominal VREF + VDO (1.024V + 0.12V = 1.144V) due to internal headroom requirements. Operating below 1.7V may cause regulation loss or increased noise; always maintain VIN ≥ 1.7V across temperature and load conditions.
How does the EN pin function on REF35102YBHR?
The EN pin on REF35102YBHR enables hardware-controlled power gating: applying ≥0.7×VIN activates the reference with 650nA IQ; pulling ≤0.3×VIN disables it, reducing current to 0.1µA. This allows microcontrollers to synchronize reference activation with ADC conversion windows - cutting system-level power by >99% during idle periods without software overhead.
Is REF35102YBHR suitable for medical device applications requiring ISO 13485 compliance?
Yes, REF35102YBHR is manufactured by Texas Instruments in ISO 13485-certified facilities and supports medical applications including blood glucose monitors and portable diagnostic tools. Its 40ppm long-term stability at 1000 hours, 70ppm thermal hysteresis, and AEC-Q200-aligned qualification data meet key reliability benchmarks for Class II medical electronics - provided final system validation includes biocompatibility and EMI testing per IEC 60601-1.
REF35102YBHR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 4-XFBGA, DSBGA
- Series:
- REF35
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 1.024V
- Voltage - Output (Max):
- -
- Current - Output:
- 10 mA
- Tolerance:
- ±0.05%
- Temperature Coefficient:
- 12ppm/°C
- Noise - 0.1Hz to 10Hz:
- 3.3ppmp-p
- Noise - 10Hz to 10kHz:
- 0.7ppmrms
- Voltage - Input:
- 1.274V ~ 6V
- Current - Supply:
- 2.6µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 4-DSBGA
REF35102YBHR FAQ
1.How can I place an order for REF35102YBHR through Aetrix?
Please submit a Request for Quotation (RFQ) for REF35102YBHR 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 REF35102YBHR reliable?
The price and inventory of REF35102YBHR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for REF35102YBHR is usually 5 days.
3.What payment methods are accepted for REF35102YBHR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for REF35102YBHR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for REF35102YBHR?
REF35102YBHR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your REF35102YBHR 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 REF35102YBHR?
For technical support, including REF35102YBHR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your REF35102YBHR requirements.
6.How does Aetrix verify that REF35102YBHR is sourced from the original manufacturer or authorized distributors?
All REF35102YBHR 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 REF35102YBHR meets industry standards.
7.What is the process for return or replacement of REF35102YBHR?
All REF35102YBHR units undergo pre-shipment inspection (PSI). If there is an issue with REF35102YBHR, 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 REF35102YBHR part is unused and in its original packaging.
Return procedure for REF35102YBHR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
REF35102YBHR Tags
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TL431AIDBZR
Texas Instruments
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TL431BQDBZR
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LM4040EIM3-2.5/NOPB
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AZ431LBNTR-G1
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LM4040D20IDBZR
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LM4041DIM3-ADJ/NOPB
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LM4040DIM3X-2.5/NOPB
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LM4040DIM3-2.5/NOPB
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AZ431LANTR-G1
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