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Texas Instruments REF35300YBHR
- Part No.:
- REF35300YBHR
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- 4-XFBGA, DSBGA
- Datasheet:
-
REF35300YBHR.pdf
- Description:
- 650-NA QUIESCENT CURRENT, 12-PPM
- Quantity:
- Payment:
- Shipping:
Inventory:2,332
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Product details
Overview
REF35300YBHR from Texas Instruments is a nanopower, high-precision series voltage reference delivering 3.0V 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 bridge sensors and low-power ADCs in battery-operated industrial monitoring systems.
For engineers reviewing the REF35300YBHR datasheet, REF35300YBHR pinout, REF35300YBHR application, or REF35300YBHR equivalent, this page provides verified electrical specifications, thermal hysteresis data, noise performance (3.3ppmP-P, 0.1Hz–10Hz), long-term stability (40ppm at 1k hour), and WCSP package layout guidance - all critical for sensor signal chain design in flow transmitters and optical modules.
Technical Context
The REF35300YBHR 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 is specified over −40°C to +85°C, distinct from the 12ppm/°C rating of SOT-23 variants, reflecting package-specific trimming and thermal behavior.
It features 20ppm/mA load regulation (source), 40ppm/mA load regulation (sink), 40ppm/V line regulation, and operates from VREF + VDO (120mV @ 5mA) up to 6V input. The 4-pin WCSP eliminates internal GND pin redundancy present in the 6-pin SOT-23 variant, optimizing board area for space-constrained portable instrumentation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output voltage | 3.0V nominal; enables direct interface with 3V ADC references and low-voltage microcontroller analog peripherals without level-shifting. |
| Initial accuracy | ±0.05% max at 25°C; reduces calibration burden in high-resolution (16-bit+) data acquisition systems. |
| Tempco | 10ppm/°C max (−40°C to +85°C); ensures <±85ppm total drift across industrial ambient range, critical for uncalibrated field deployments. |
| Quiescent current | 0.65µA typical active, 0.1µA shutdown; supports >10-year battery life in wireless fault indicators and portable analyzers. |
| Low-frequency noise | 3.3ppmP-P (0.1Hz–10Hz, VREF < 2.5V); confirmed for 3.0V output per Section 6.6 - enables sub-16-bit effective resolution in precision sensor front-ends. |
| Long-term stability | 40ppm at 1000 hours; quantifies baseline aging drift for reliability modeling in medical devices like blood glucose monitors. |
| Thermal hysteresis | 70ppm (cycle 1, −40°C to +125°C to 25°C); defines repeatability error after thermal cycling in outdoor process analytics enclosures. |
Pinout & Package
REF35300YBHR uses a 4-pin Wafer Chip Scale Package (WCSP) with 1.05mm × 0.84mm body size and solder-ball terminations. Pin assignment follows TI's YBH footprint: A1 = VREF, A2 = VIN, B1 = GND, B2 = EN.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VREF (A1) | Reference output | 3.0V precision voltage source; requires 0.1–10µF output capacitor (ESR ≤ 400mΩ) for stability and noise filtering. |
| VIN (A2) | Power input | Accepts 3.12V–6V supply; dropout voltage is 120mV @ 5mA, enabling use with weak LDOs or partially discharged batteries. |
| GND (B1) | Ground reference | Single ground connection; internal die substrate tie - no separate NR or second GND required in WCSP variant. |
| EN (B2) | Enable control | Active-high logic input; pulls device into 0.1µA shutdown when driven <0.3×VIN; floats to enable by default. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low IQ | 650nA typical active current enables multi-year operation from coin cells in remote fault indicators. |
| EN pin control | Reduces system-level standby power by disabling reference during MCU sleep cycles without external FETs. |
| WCSP footprint | 1.05mm × 0.84mm area saves >70% board space vs. SOT-23, critical for optical module PCB real estate constraints. |
| 10ppm/°C tempco | Guaranteed over −40°C to +85°C (not extended range) - matches industrial ambient specs without derating. |
| 40ppm long-term drift | Quantifies 1000-hour aging in standard FR4 PCBs, supporting MTBF calculations for medical-grade analyzers. |
Applications
| Flow Transmitter | Blood Glucose Monitor |
|---|---|
Use Scenario: Provides excitation voltage for differential pressure sensor bridges in smart water/gas meters operating on primary lithium batteries. IC Role / Device Role / Timing Role: Precision voltage reference for ratiometric bridge measurement, directly setting full-scale ADC input range. Use Value: ±0.05% initial accuracy and 10ppm/°C tempco maintain <0.1% total measurement error across -25°C to +70°C field temperatures without recalibration. | Use Scenario: Supplies stable bias to electrochemical sensor amplifiers and 16-bit SAR ADCs in handheld diagnostic devices. IC Role / Device Role / Timing Role: Low-noise (3.3ppmP-P) reference for analog front-end, ensuring accurate glucose concentration calculation from current-to-voltage conversion. Use Value: 650nA quiescent current extends single-CR2032 battery life beyond 2000 tests, meeting IEC 60601-2-61 usability requirements. |
| Servo Drive Control Module | Optical Module |
Use Scenario: References current-sense amplifiers monitoring motor phase currents in compact industrial servo drives with tight thermal envelopes. IC Role / Device Role / Timing Role: High-stability reference for bidirectional current sensing, rejecting supply ripple via 90dB PSRR at 1kHz. Use Value: 70ppm thermal hysteresis ensures repeatable torque feedback after thermal cycling during continuous duty cycles. | Use Scenario: Sets DAC output range for laser diode bias control in SFP+ transceivers where PCB area is constrained by mechanical form factor. IC Role / Device Role / Timing Role: Compact 3.0V reference enabling direct interface with 3.3V-tolerant DACs while minimizing trace inductance in RF-sensitive zones. Use Value: 1.05mm × 0.84mm WCSP footprint allows placement within 2mm of DAC, reducing noise pickup and meeting SFF-8472 compliance margins. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3430DBVR | 3.0V, ±0.05% accuracy, 12ppm/°C tempco (−40°C to +125°C), 850nA IQ, SOT-23-6 package | Wider temp range but higher tempco and IQ; requires larger PCB area | Select for extended temperature operation where WCSP assembly capability is unavailable. |
| ADR3430ARJZ-R7 | 3.0V, ±0.1% accuracy, 10ppm/°C tempco, 3.5µA IQ, SOT-23-5 package | Looser initial accuracy and 5.4× higher IQ; no EN pin | Select when ultra-low power is not required and cost sensitivity outweighs long-term stability needs. |
Compared with REF35300YBHR, REF3430DBVR offers broader temperature coverage but sacrifices 38% higher quiescent current and larger footprint, while ADR3430ARJZ-R7 trades 0.05% accuracy and 5.4× higher IQ for lower unit cost - making REF35300YBHR optimal for space- and battery-limited industrial sensors requiring guaranteed 10ppm/°C performance over −40°C to +85°C.
Availability
REF35300YBHR is available at Aetrix Electronics and suitable for flow transmitter calibration, blood glucose monitor production, and optical module manufacturing requiring stable component supply with consistent WCSP packaging and TI's long-term product commitment.
Supply support for REF35300YBHR 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 reference design and high-volume manufacturing.
The REF35 family was engineered specifically for ultra-low-power, high-accuracy applications in portable instrumentation and industrial sensors - prioritizing nanopower operation, minimal thermal drift, and miniature packaging without compromising initial tolerance.
FAQ
What is the maximum operating temperature range for REF35300YBHR?
The REF35300YBHR is functional from −55°C to +125°C, but its 10ppm/°C temperature coefficient specification is guaranteed only over −40°C to +85°C. For designs requiring full-range tempco validation, consult TI's characterization report SNAS809C Section 6.6 and consider derating or thermal margining.
Does REF35300YBHR require an external noise reduction capacitor?
No - the REF35300YBHR (YBH WCSP package) does not include an NR pin; that feature is exclusive to the 6-pin SOT-23 variants (e.g., REF35300QDBVR). Its 3.3ppmP-P low-frequency noise is achieved through internal design and requires only a 0.1–10µF output capacitor for stability.
Can REF35300YBHR drive a 10mA load continuously?
Yes - REF35300YBHR supports +10mA source and −5mA sink output current. However, at 10mA load, dropout voltage rises to 250mV, requiring VIN ≥ 3.25V. Thermal considerations also apply: RθJA = 178.9°C/W means ~1.8°C rise at 10mA with 3.0V output, well within safe limits.
How does the long-term stability of REF35300YBHR compare between WCSP and SOT-23 packages?
Both REF35300YBHR (WCSP) and REF35300QDBVR (SOT-23) specify 40ppm long-term stability at 1000 hours under identical test conditions (35°C oil bath, FR4 PCB). TI's Figure 6-37 confirms WCSP exhibits comparable aging behavior to SOT-23, validating interchangeability in reliability-critical medical and industrial applications.
Is REF35300YBHR pin-compatible with other REF35 variants?
No - REF35300YBHR uses a 4-pin WCSP (YBH) footprint, while SOT-23 variants (e.g., REF35300QDBVR) use a 6-pin DBV package with different pin count, arrangement, and inclusion of an NR pin. PCB layout must be redesigned when switching between these packages.
REF35300YBHR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 4-XFBGA, DSBGA
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 3V
- Voltage - Output (Max):
- -
- Current - Output:
- 10 mA
- Tolerance:
- ±0.05%
- Temperature Coefficient:
- 12ppm/°C
- Noise - 0.1Hz to 10Hz:
- 3.8ppmp-p
- Noise - 10Hz to 10kHz:
- 0.7ppmrms
- Voltage - Input:
- 3.25V ~ 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
REF35300YBHR FAQ
1.How can I place an order for REF35300YBHR through Aetrix?
Please submit a Request for Quotation (RFQ) for REF35300YBHR 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 REF35300YBHR reliable?
The price and inventory of REF35300YBHR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for REF35300YBHR is usually 5 days.
3.What payment methods are accepted for REF35300YBHR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for REF35300YBHR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for REF35300YBHR?
REF35300YBHR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your REF35300YBHR 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 REF35300YBHR?
For technical support, including REF35300YBHR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your REF35300YBHR requirements.
6.How does Aetrix verify that REF35300YBHR is sourced from the original manufacturer or authorized distributors?
All REF35300YBHR 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 REF35300YBHR meets industry standards.
7.What is the process for return or replacement of REF35300YBHR?
All REF35300YBHR units undergo pre-shipment inspection (PSI). If there is an issue with REF35300YBHR, 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 REF35300YBHR part is unused and in its original packaging.
Return procedure for REF35300YBHR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
REF35300YBHR Tags
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TL431AIDBZR
Texas Instruments
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TL431BQDBZR
Texas Instruments
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AN431AN-ATRG1
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LM4040CYM3-2.5-TR
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LM4040CYM3-4.1-TR
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LM4040EIM3-2.5/NOPB
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AZ431LBNTR-G1
Diodes Incorporated
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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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