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Texas Instruments REF35180YBHR
- Part No.:
- REF35180YBHR
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- 4-XFBGA, DSBGA
- Datasheet:
-
REF35180YBHR.pdf
- Description:
- IC VREF SERIES 1.8V 4XFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:12,000
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Product details
Overview
REF35180YBHR from Texas Instruments is a nanopower, high-precision series voltage reference delivering 1.8V output with ±0.05% initial accuracy, 10ppm/°C max temperature coefficient (−40°C to +85°C), and 650nA typical quiescent current. It operates across −55°C to +125°C and supports ±5mA sink/source load in a 4-pin WCSP package - ideal for ultra-low-power sensor biasing and portable data acquisition.
For engineers reviewing the REF35180YBHR datasheet, REF35180YBHR pinout, REF35180YBHR application, or REF35180YBHR equivalent, this page delivers verified electrical specs, WCSP package terminal mapping, real-world use cases in medical and industrial instrumentation, and two validated alternative parts with documented functional trade-offs.
Technical Context
The REF35180YBHR implements a bandgap-based series reference architecture with integrated enable (EN) and noise reduction (NR) terminals, enabling precise power management and low-noise operation in battery-constrained systems. Its 10ppm/°C tempco is specified over −40°C to +85°C - tighter than the SOT-23 variant's 12ppm/°C - and its 3.3ppmP-P (0.1Hz–10Hz) noise performance is confirmed for VREF < 2.5V configurations.
It features active-mode quiescent current of 0.65µA (typ), shutdown current of 0.1µA (typ), dropout voltage of 120mV at 5mA, and long-term stability of 40ppm at 1k hour - all measured under TI's standardized test conditions per SNAS809C Rev. September 2024.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.8V ±0.05% - enables accurate scaling for 12–16-bit ADCs with 1.8V reference rails. |
| Tempco (max) | 10ppm/°C (−40°C to +85°C) - ensures ≤±85ppm total drift over industrial ambient range. |
| Quiescent Current | 0.65µA (typ) - allows >10-year battery life in always-on IoT sensors drawing <1µA system current. |
| Noise (0.1–10Hz) | 3.3ppmP-P - contributes <0.006mVP-P error to 1.8V output, critical for µV-level precision measurements. |
| Load Regulation | 20ppm/mA (source), 40ppm/mA (sink) - maintains stability under dynamic sensor excitation loads up to ±5mA. |
| Long-Term Stability | 40ppm at 1000 hours - predicts minimal calibration drift in field-deployed medical or test equipment. |
| Operating Range | −55°C to +125°C - supports extended-temperature industrial and automotive under-hood applications. |
Pinout & Package
REF35180YBHR uses a 4-pin Wafer Chip Scale Package (WCSP) with nominal dimensions 1.05mm × 0.84mm. The package has no exposed thermal pad and requires standard reflow soldering per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VREF | Output | Stable 1.8V reference voltage node; connects directly to ADC REF+ or precision DAC reference input. |
| VIN | Power | Input supply (1.7V min for 1.8V output); must exceed VREF by ≥120mV at 5mA load to avoid dropout. |
| GND | Ground | Primary device ground; pin B1 in WCSP layout - must be tied to low-impedance system ground plane. |
| EN | Input | Enable control: logic-high (>0.7×VIN) activates reference; logic-low (<0.3×VIN) reduces IQ to 0.1µA (typ). |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low IQ mode | 650nA typical active current enables multi-year operation from coin cells in portable diagnostics. |
| EN-controlled shutdown | Reduces supply current to 100nA (typ), eliminating standby loss in duty-cycled sensor nodes. |
| WCSP footprint | 0.88mm² area (1.05mm × 0.84mm) saves >70% board space vs. 6-pin SOT-23 for space-constrained wearables. |
| Low thermal hysteresis | 70ppm max after −40°C/+85°C cycling - preserves calibration integrity in thermally cycled field instruments. |
| Stable with ceramic caps | Supports 0.1–10µF output capacitance (ESR ≤400mΩ), simplifying layout with common X7R/X5R MLCCs. |
Applications
| Blood Glucose Monitor | Flow Transmitter |
|---|---|
Use Scenario: Portable handheld glucose meter requiring stable 1.8V reference for electrochemical sensor signal conditioning and 16-bit ADC conversion. IC Role / Device Role / Timing Role: Precision voltage reference for analog front-end gain-setting and ADC reference rail. Use Value: 0.05% initial accuracy and 10ppm/°C tempco ensure <±0.1% measurement error across body-temperature variations. | Use Scenario: Loop-powered industrial flow transmitter with 4–20mA output, operating from 12–24V supply with ultra-low internal power budget. IC Role / Device Role / Timing Role: Low-drift, low-IQ reference for current-loop DAC and sensor bridge excitation. Use Value: 650nA quiescent current minimizes burden on loop power while maintaining 12-bit linearity over temperature. |
| Servo Drive Control Module | Optical Module |
Use Scenario: Compact servo amplifier PCB where space and thermal rise are constrained, requiring accurate current-sense reference for motor phase monitoring. IC Role / Device Role / Timing Role: Stable 1.8V reference for current-shunt amplifier biasing and isolated ADC reference. Use Value: WCSP package enables placement near shunt resistor; 40ppm long-term stability avoids recalibration during 10-year service life. | Use Scenario: Pluggable optical transceiver (SFP+/QSFP) needing low-noise, low-power reference for TIA bias and DAC-controlled laser driver. IC Role / Device Role / Timing Role: Low-noise 1.8V reference for analog control loops in high-speed optical PHY subsystems. Use Value: 3.3ppmP-P (0.1–10Hz) noise prevents baseline wander in photodiode current measurement circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3418RTET | Higher IQ (3.5µA typ), 2.5ppm/°C max tempco, 3mm × 3mm WSON-6 package | Better tempco and noise, but 5.4× larger footprint and 5× higher supply current | Choose when ultimate stability outweighs size/power constraints - e.g., lab-grade calibrators. |
| ADR3418ARJZ-R7 | 1.8V output, ±0.1% initial accuracy, 20ppm/°C tempco, SOT-23-5 package, 120nA IQ | Lower IQ but looser accuracy and higher tempco; no EN/NR pins | Choose for cost-sensitive, non-critical biasing where 0.1% error is acceptable and enable control is unnecessary. |
Compared with REF35180YBHR, REF3418RTET offers superior drift performance at the expense of size and power, while ADR3418ARJZ-R7 trades accuracy and feature set for ultra-low IQ and lower cost - making REF35180YBHR the optimal balance for space-constrained, battery-operated precision systems.
Availability
REF35180YBHR is available at Aetrix Electronics and suitable for blood glucose monitors, flow transmitters, servo drive control modules, and optical modules requiring stable component supply with guaranteed long-term manufacturability.
Supply support for REF35180YBHR 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 analog ICs and voltage references.
The REF35 family was designed specifically for ultra-low-power, high-accuracy applications including portable medical devices, industrial sensors, and battery-powered test equipment - prioritizing nanopower operation without sacrificing initial accuracy or long-term stability.
FAQ
What is the maximum operating temperature range for REF35180YBHR?
The REF35180YBHR is fully specified from −40°C to +85°C, with functional operation guaranteed from −55°C to +125°C per SNAS809C Rev. September 2024. Its 10ppm/°C temperature coefficient applies strictly within the −40°C to +85°C range, making it suitable for extended-temperature industrial environments where full spec compliance is required.
Does REF35180YBHR require an external capacitor on the NR pin?
No - the NR pin on REF35180YBHR may be left floating, but connecting a capacitor (typically 1µF to 10µF) between NR and GND reduces low-frequency noise. For the 1.8V variant, noise is specified as 3.3ppmP-P (0.1Hz–10Hz) with NR open; adding capacitance further lowers this value, improving performance in high-resolution measurement systems using REF35180YBHR.
Can REF35180YBHR drive a 10mA load?
No - REF35180YBHR is rated for +10mA source and −5mA sink current. Driving a full 10mA load is only supported in sourcing direction; sinking 10mA exceeds its −5mA limit and may cause output regulation failure. Designers must verify load polarity and magnitude - for bidirectional 10mA loads, consider a buffer amplifier or alternate reference like REF5018.
What is the dropout voltage of REF35180YBHR at 5mA load?
The dropout voltage of REF35180YBHR is 120mV (max) at 5mA load, meaning VIN must be ≥1.92V to maintain regulation. This value is confirmed in Section 6.6 (Electrical Characteristics YBH package) of the SNAS809C datasheet. At 10mA, dropout rises to 250mV, requiring VIN ≥2.05V - critical for low-voltage battery systems where headroom is constrained.
Is REF35180YBHR pin-compatible with other REF35 variants in WCSP?
Yes - all REF35 YBH-packaged variants (e.g., REF35250YBHR, REF35409YBHR) share identical 4-pin WCSP pinout: VREF (A1), VIN (A2), GND (B1), EN (B2). This allows drop-in replacement across output voltages without PCB redesign, provided input voltage, load, and thermal requirements remain compatible with the new VREF selection.
REF35180YBHR 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):
- 1.8V
- 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:
- 2.05V ~ 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
REF35180YBHR FAQ
1.How can I place an order for REF35180YBHR through Aetrix?
Please submit a Request for Quotation (RFQ) for REF35180YBHR 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 REF35180YBHR reliable?
The price and inventory of REF35180YBHR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for REF35180YBHR is usually 5 days.
3.What payment methods are accepted for REF35180YBHR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for REF35180YBHR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for REF35180YBHR?
REF35180YBHR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your REF35180YBHR 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 REF35180YBHR?
For technical support, including REF35180YBHR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your REF35180YBHR requirements.
6.How does Aetrix verify that REF35180YBHR is sourced from the original manufacturer or authorized distributors?
All REF35180YBHR 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 REF35180YBHR meets industry standards.
7.What is the process for return or replacement of REF35180YBHR?
All REF35180YBHR units undergo pre-shipment inspection (PSI). If there is an issue with REF35180YBHR, 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 REF35180YBHR part is unused and in its original packaging.
Return procedure for REF35180YBHR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
REF35180YBHR Tags
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TL431AIDBZR
Texas Instruments
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TL431BQDBZR
Texas Instruments
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LM4040CYM3-2.5-TR
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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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