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Analog Devices Inc. LTC6655LNBHMS8-2.5#TRPBF
- Part No.:
- LTC6655LNBHMS8-2.5#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC6655LNBHMS8-2.5#TRPBF.pdf
- Description:
- IC VREF SERIES 0.025% 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,895
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Product details
Overview
LTC6655LNBHMS8-2.5#TRPBF from Analog Devices is a low-noise, precision bandgap voltage reference delivering 2.5V output with ±0.025% initial accuracy, 2ppm/°C max temperature coefficient, and 0.12ppmP-P (0.1Hz–10Hz) noise when using a 100µF NR capacitor. It operates from 3V to 13.2V supply, sinks/sources ±5mA, and targets high-resolution data acquisition, instrumentation, and precision battery monitoring systems.
For engineers reviewing the LTC6655LNBHMS8-2.5#TRPBF datasheet, LTC6655LNBHMS8-2.5#TRPBF pinout, LTC6655LNBHMS8-2.5#TRPBF application, or LTC6655LNBHMS8-2.5#TRPBF equivalent, key selection criteria include its dedicated NR pin for wideband noise reduction, MSOP-8 package compatibility, –40°C to 125°C operation, and verified load regulation of ≤20ppm/mA (sourcing) and ≤35ppm/mA (sinking).
Technical Context
The LTC6655LNBHMS8-2.5#TRPBF implements advanced curvature-compensated bandgap architecture with a dedicated Noise Reduction (NR) pin that enables external capacitor filtering to suppress wideband noise. Its dual-output configuration-VOUT_F (force) and NR-decouples output drive from noise-sensitive feedback paths.
It features active shutdown (<20µA), 500mV dropout, and full specification across –40°C to 125°C. Load regulation is separately characterized for sourcing and sinking conditions, and line rejection exceeds 90dB at DC, maintaining stability under varying input and load conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.5V ±0.025% (±625µV) - ensures minimal calibration burden in 24-bit ADC systems |
| Temp Coefficient | ≤2ppm/°C - guarantees <±250µV drift over –40°C to 125°C ambient range |
| Low-Freq Noise | 0.12ppmP-P (0.1Hz–10Hz) with 100µF NR cap - enables sub-1µVP-P noise floor in precision weigh scales |
| Load Regulation | ≤20ppm/mA (source), ≤35ppm/mA (sink) - supports dynamic loads up to ±5mA without >50µV error |
| Dropout Voltage | 500mV - allows operation from 3.0V supply while maintaining 2.5V output |
| Shutdown Current | <20µA - enables ultra-low-power sleep modes in portable medical devices |
| Supply Range | 3V to 13.2V - compatible with industrial 3.3V, 5V, and 12V rails without LDO pre-regulation |
Pinout & Package
Package: 8-lead plastic MSOP (3mm × 3mm, 0.65mm pitch), RoHS-compliant, rated for –40°C to 125°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - SHDN | Active-low shutdown control | Pull to GND for <20µA quiescent mode; internal pull-up ensures default ON if floating |
| 2 - VIN | Positive power supply input | Requires ≥0.1µF ceramic bypass to GND; accepts 3V–13.2V with 500mV headroom over VOUT |
| 3, 4, 5, 8 - GND | Ground terminals | Star-ground connection at Pin 4 required; multiple GND pins reduce ground impedance and improve PSRR |
| 6 - NR | Noise reduction filter node | Connect 100µF capacitor to GND to reduce wideband noise; leakage <1nA avoids VOUT shift |
| 7 - VOUT_F | Force output driver | Sources/sinks ±5mA; requires 2.7µF–100µF output capacitor for stability and transient response |
Key Features
| Feature | Design Value |
|---|---|
| Dedicated NR pin with 100µF optimization | Reduces 0.1Hz–10Hz noise to 0.12ppmP-P, enabling 24+ bit measurement fidelity without post-filtering |
| Curvature-compensated bandgap core | Delivers predictable 2ppm/°C drift and ±0.025% accuracy across full –40°C to 125°C range |
| Separate force/sense architecture (VOUT_F only) | VOUT_F drives load directly; eliminates trace-resistance-induced errors common in remote-sense references |
| Full-temp-range tested | 100% tested at –40°C, 25°C, and 125°C - ensures guaranteed performance without derating |
| High PSRR & low ESR sensitivity | PSRR >90dB at DC and stable with 0.1Ω ESR output caps - simplifies layout in noisy industrial environments |
Applications
| Instrumentation Calibration | High-Resolution DAQ |
|---|---|
Use Scenario: Benchtop multimeters and automated test equipment requiring traceable voltage standards. IC Role / Device Role / Timing Role: Primary 2.5V reference for 24-bit SAR ADCs and DACs, providing stable excitation for ratiometric measurements. Use Value: 0.12ppmP-P noise and 2ppm/°C drift eliminate recalibration cycles during thermal soak testing. | Use Scenario: Seismic sensor arrays and strain-gauge bridge readouts demanding ultra-low noise floors. IC Role / Device Role / Timing Role: Reference source for delta-sigma ADC front-ends, where noise directly limits effective resolution. Use Value: NR pin + 100µF cap achieves sub-1µVP-P integrated noise (0.1Hz–10Hz), enabling true 24-bit ENOB. |
| Weigh Scale Systems | Precision Battery Monitoring |
Use Scenario: Legal-for-trade platform scales and pharmaceutical dispensers requiring NIST-traceable accuracy. IC Role / Device Role / Timing Role: Excitation reference for 350Ω load cells in Wheatstone bridges, rejecting common-mode supply variations. Use Value: 500mV dropout and 3V min supply allow direct use with single-cell Li-ion (3.0–4.2V) without pre-regulator loss. | Use Scenario: Medical infusion pumps and portable diagnostic devices monitoring multi-cell Li-ion packs. IC Role / Device Role / Timing Role: Stable 2.5V reference for fuel-gauge ICs and coulomb counters, minimizing SOC estimation drift. Use Value: Long-term drift of 60ppm/√kHr (MSOP) ensures <±100µV error after 1 year of continuous operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF5025IDR | Higher 3ppm/°C max drift; no NR pin; 0.25ppmP-P noise (0.1–10Hz); SOIC-8 package | Lacks noise-reduction capability; less suitable for sub-20-bit systems requiring lowest noise | Select when cost sensitivity outweighs ultra-low-noise requirement and SOIC footprint is preferred |
| ADR4525BRZ | Lower 1.5ppm/°C max drift; 0.23ppmP-P noise; SOIC-8; no NR pin; higher 10mA output current | Better drift but higher noise than LTC6655LN; no external noise filtering option | Choose for highest stability-critical applications (e.g., metrology calibrators) where noise is secondary to long-term drift |
Compared with REF5025IDR and ADR4525BRZ, the LTC6655LNBHMS8-2.5#TRPBF uniquely combines the lowest measurable noise (0.12ppmP-P) with an adjustable NR pin, making it the only option among the three capable of achieving sub-1µVP-P noise in production systems without custom filtering.
Availability
LTC6655LNBHMS8-2.5#TRPBF is available at Aetrix Electronics and suitable for instrumentation calibration, high-resolution data acquisition, and precision battery monitoring requiring stable component supply across automotive (-40°C to 125°C), industrial, and medical end equipment.
Supply support for LTC6655LNBHMS8-2.5#TRPBF 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
Analog Devices, Inc. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, communications, automotive, and healthcare markets.
The LTC6655 family was designed specifically for metrology-grade voltage references - emphasizing ultra-low noise, low thermal hysteresis, and guaranteed full-temperature-range performance in harsh environments.
FAQ
What is the function of the NR pin on the LTC6655LNBHMS8-2.5#TRPBF?
The NR (Noise Reduction) pin on the LTC6655LNBHMS8-2.5#TRPBF is a dedicated filter node that, when connected to ground via a capacitor (typically 100µF), attenuates wideband noise - reducing 0.1Hz–10Hz output noise to 0.12ppmP-P. This pin is exclusive to the LTC6655LN variant and is not present on standard LTC6655 versions. The LTC6655LNBHMS8-2.5#TRPBF uses this pin to achieve its industry-leading low-noise performance without requiring external op-amp filtering stages.
Does the LTC6655LNBHMS8-2.5#TRPBF require an output capacitor, and what value is recommended?
Yes, the LTC6655LNBHMS8-2.5#TRPBF requires an output capacitor between 2.7µF and 100µF for stability, transient response, and noise control. A 10µF–22µF X7R ceramic capacitor is typical for general use; however, for ultra-low-noise applications, a 100µF film capacitor (e.g., polypropylene) is recommended to avoid piezoelectric noise artifacts. The LTC6655LNBHMS8-2.5#TRPBF's output buffer is optimized for ESR ≤0.1Ω, and capacitor selection directly impacts turn-on time and integrated noise.
How does the LTC6655LNBHMS8-2.5#TRPBF handle load current sourcing and sinking?
The LTC6655LNBHMS8-2.5#TRPBF sources and sinks up to ±5mA while maintaining specified accuracy. Load regulation is asymmetric: ≤20ppm/mA when sourcing and ≤35ppm/mA when sinking. This behavior is due to internal output stage design and must be accounted for in bidirectional load applications (e.g., driving ADC reference inputs with dynamic bias currents). The LTC6655LNBHMS8-2.5#TRPBF's VOUT_F pin delivers this capability without requiring external buffers in most precision designs.
What is the minimum supply voltage required for the LTC6655LNBHMS8-2.5#TRPBF to maintain 2.5V output accuracy?
The LTC6655LNBHMS8-2.5#TRPBF requires a minimum supply voltage of 3.0V - i.e., VIN ≥ VOUT + 0.5V - to maintain full 2.5V output accuracy and specified load regulation. Below 3.0V, output voltage droops nonlinearly and specifications such as noise, drift, and line regulation are no longer guaranteed. This 500mV dropout enables direct operation from single-cell Li-ion (3.0–4.2V) or regulated 3.3V supplies without additional LDO overhead - a key advantage of the LTC6655LNBHMS8-2.5#TRPBF in space-constrained portable systems.
Is the LTC6655LNBHMS8-2.5#TRPBF qualified for automotive applications?
Yes, the LTC6655LNBHMS8-2.5#TRPBF is fully specified and 100% tested over –40°C to 125°C, meeting AEC-Q200 stress requirements for temperature cycling, humidity, and long-term reliability. Its low thermal hysteresis (30ppm over –40°C to 85°C), robust PSRR (>90dB), and hermetic-grade stability make it suitable for engine control units, battery management systems, and ADAS sensor signal conditioning - where reference stability directly impacts functional safety compliance.
LTC6655LNBHMS8-2.5#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- 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:
- 5 mA
- Tolerance:
- ±0.025%
- Temperature Coefficient:
- 2ppm/°C
- Noise - 0.1Hz to 10Hz:
- 0.12ppmp-p
- Noise - 10Hz to 10kHz:
- 0.21ppmrms
- Voltage - Input:
- 13.2V
- Current - Supply:
- 7.5mA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP
LTC6655LNBHMS8-2.5#TRPBF FAQ
1.How can I place an order for LTC6655LNBHMS8-2.5#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6655LNBHMS8-2.5#TRPBF 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 LTC6655LNBHMS8-2.5#TRPBF reliable?
The price and inventory of LTC6655LNBHMS8-2.5#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6655LNBHMS8-2.5#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC6655LNBHMS8-2.5#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6655LNBHMS8-2.5#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6655LNBHMS8-2.5#TRPBF?
LTC6655LNBHMS8-2.5#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6655LNBHMS8-2.5#TRPBF 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 LTC6655LNBHMS8-2.5#TRPBF?
For technical support, including LTC6655LNBHMS8-2.5#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6655LNBHMS8-2.5#TRPBF requirements.
6.How does Aetrix verify that LTC6655LNBHMS8-2.5#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC6655LNBHMS8-2.5#TRPBF 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 LTC6655LNBHMS8-2.5#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC6655LNBHMS8-2.5#TRPBF?
All LTC6655LNBHMS8-2.5#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6655LNBHMS8-2.5#TRPBF, 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 LTC6655LNBHMS8-2.5#TRPBF part is unused and in its original packaging.
Return procedure for LTC6655LNBHMS8-2.5#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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