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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Reference

Analog Devices Inc. LTC6655LNCHMS8-5#TRPBF

Name: LTC6655LNCHMS8-5#TRPBF
Brand: Analog Devices Inc.
SKU: LTC6655LNCHMS8-5#TRPBF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: LTC6655LNCHMS8-5#TRPBF

Manufacturer:: Analog Devices Inc.

Category:: Voltage Reference

Package:: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)

Datasheet:: LTC6655LNCHMS8-5#TRPBF.pdf

Description:: IC VREF SERIES 0.05% 8MSOP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

LTC6655LNCHMS8-5#TRPBF from Analog Devices is a precision 5V bandgap voltage reference IC with ultra-low noise (0.12ppm_P-P, 0.1Hz–10Hz), <2ppm/°C max drift, ±0.025% initial accuracy, and MSOP-8 packaging-designed for high-resolution data acquisition in test equipment and industrial instrumentation.

For engineers reviewing the LTC6655LNCHMS8-5#TRPBF datasheet, LTC6655LNCHMS8-5#TRPBF pinout, LTC6655LNCHMS8-5#TRPBF application, or LTC6655LNCHMS8-5#TRPBF equivalent, key selection criteria include low-frequency noise performance, thermal hysteresis (30ppm over –40°C to 85°C), NR pin functionality for external noise filtering, and guaranteed operation across –40°C to 125°C.

Technical Context

The LTC6655LNCHMS8-5#TRPBF implements advanced curvature-compensated bandgap architecture with dedicated Noise Reduction (NR) pin enabling configurable wideband noise suppression via external capacitor. Its dual-output topology (VOUT_F force/sense separation in non-LN variants) is simplified in this LN variant to single VOUT_F output with integrated NR path.

It operates from VIN = VOUT + 0.5V (5.5V min) up to 13.2V, delivers ±5mA load current with <14ppm/mA sourcing load regulation (–40°C to 125°C), and achieves 120dB PSRR at DC while maintaining <20µA shutdown current. The device is fully characterized at –40°C, 25°C, and 125°C per production test flow.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	5.000V ±0.025% (±1.25mV) - enables 16-bit+ ADC biasing without calibration.
Temp Coefficient	≤2ppm/°C max - ensures <250ppm total drift over –40°C to 125°C span.
Low-Freq Noise	0.12ppm_P-P (0.1Hz–10Hz) - supports sub-20-bit resolution in precision weigh scales.
Load Regulation	14ppm/mA max (sourcing) - maintains stability under dynamic sensor excitation loads.
Dropout Voltage	500mV - allows operation from 5.5V supply in 5V-rail systems with margin.
Shutdown Current	<20µA - enables battery-powered portable instrumentation with long sleep cycles.
Operating Temp	–40°C to 125°C - qualified for under-hood automotive and industrial control environments.

Pinout & Package

Package: 8-lead plastic MSOP (3mm × 3mm), RoHS-compliant, moisture sensitivity level 1.

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	Power input	Accepts 5.5V–13.2V; requires ≥0.1µF ceramic bypass to GND for PSRR optimization.
3, 5, 8 - GND	Ground terminals	All must be connected to low-impedance ground plane; star-ground at Pin 4 recommended.
4 - GND	Main ground reference	Primary ground connection point; all other GND pins tie here for minimal noise coupling.
6 - NR	Noise reduction input	Connect external capacitor (e.g., 10µF) to GND to attenuate wideband noise above 10Hz.
7 - VOUT_F	Regulated output	Sources/sinks ±5mA; requires 2.7µF–100µF low-ESR output capacitor for stability.

Key Features

Feature	Design Value
Ultra-low 0.1Hz–10Hz noise	0.12ppm_P-P enables <1µV RMS noise floor in 24-bit delta-sigma ADC front-ends.
Dedicated NR pin	External capacitor programmability allows trade-off between bandwidth and noise without redesign.
Guaranteed temp range	Full –40°C to 125°C characterization eliminates derating assumptions in harsh environments.
High sink/source capability	±5mA drive supports direct excitation of RTDs, strain gauges, and precision DAC references.
Low thermal hysteresis	30ppm (–40°C to 85°C) ensures repeatable calibration after thermal cycling in lab equipment.

Applications

High-Resolution Data Acquisition	Precision Battery Monitoring
Use Scenario: 24-bit sigma-delta ADC system measuring thermocouple or RTD signals in automated test equipment. IC Role / Device Role / Timing Role: Primary voltage reference establishing absolute scale for analog-to-digital conversion. Use Value: 0.12ppm_P-P low-frequency noise directly limits effective resolution to >23.5 ENOB at 10SPS.	Use Scenario: Multi-cell Li-ion battery pack monitoring in EV BMS requiring ±1mV cell voltage accuracy. IC Role / Device Role / Timing Role: Stable 5V reference for ADC and comparator thresholds across temperature extremes. Use Value: ≤2ppm/°C drift ensures <±250µV error over full automotive temperature range (–40°C to 125°C).
Weigh Scales	Medical Instrumentation
Use Scenario: Platform scale with 10,000:1 dynamic range using 20-bit ADC and load cell bridge. IC Role / Device Role / Timing Role: Excitation and reference source for ratiometric measurement architecture. Use Value: 0.12ppm_P-P noise translates to <10nV RMS, supporting sub-gram resolution at full scale.	Use Scenario: Portable ECG monitor requiring stable 5V rail for analog front-end and ADC in clinical settings. IC Role / Device Role / Timing Role: Precision reference for signal conditioning and digitization of microvolt-level biopotentials. Use Value: Guaranteed –40°C to 125°C operation supports sterilization cycles and extended field deployment.

High-Resolution Data Acquisition

Precision Battery Monitoring

Use Scenario: 24-bit sigma-delta ADC system measuring thermocouple or RTD signals in automated test equipment.

IC Role / Device Role / Timing Role: Primary voltage reference establishing absolute scale for analog-to-digital conversion.

Use Value: 0.12ppm_P-P low-frequency noise directly limits effective resolution to >23.5 ENOB at 10SPS.

Use Scenario: Multi-cell Li-ion battery pack monitoring in EV BMS requiring ±1mV cell voltage accuracy.

IC Role / Device Role / Timing Role: Stable 5V reference for ADC and comparator thresholds across temperature extremes.

Use Value: ≤2ppm/°C drift ensures <±250µV error over full automotive temperature range (–40°C to 125°C).

Weigh Scales

Medical Instrumentation

Use Scenario: Platform scale with 10,000:1 dynamic range using 20-bit ADC and load cell bridge.

IC Role / Device Role / Timing Role: Excitation and reference source for ratiometric measurement architecture.

Use Value: 0.12ppm_P-P noise translates to <10nV RMS, supporting sub-gram resolution at full scale.

Use Scenario: Portable ECG monitor requiring stable 5V rail for analog front-end and ADC in clinical settings.

IC Role / Device Role / Timing Role: Precision reference for signal conditioning and digitization of microvolt-level biopotentials.

Use Value: Guaranteed –40°C to 125°C operation supports sterilization cycles and extended field deployment.

Equivalent & Alternatives

The following parts are listed as comparable options for similar precision voltage reference applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
REF5050IDR	Higher 0.25ppm_P-P (0.1–10Hz) noise; no NR pin; 3ppm/°C max drift; SOIC-8 package.	Lacks configurable noise filtering; less suitable for ultra-low-noise 24-bit DAQ where sub-0.2ppm noise is critical.	Choose REF5050IDR only when board space permits SOIC-8 and noise budget allows 2× higher LF noise.
ADR4550BRZ	0.2ppm_P-P (0.1–10Hz); no NR pin; 3ppm/°C max drift; SOIC-8; 10-year long-term drift spec (50ppm).	Higher long-term drift impacts recalibration interval in metrology-grade instruments.	Select ADR4550BRZ for cost-sensitive industrial sensors where 10-year stability is not required.

Compared with REF5050IDR and ADR4550BRZ, the LTC6655LNCHMS8-5#TRPBF provides the lowest broadband noise and unique NR pin flexibility-critical for applications demanding <0.15ppm_P-P noise and adaptive filtering-while maintaining tighter drift and hysteresis specs in MSOP-8 form factor.

Availability

LTC6655LNCHMS8-5#TRPBF is available at Aetrix Electronics and suitable for high-resolution data acquisition systems, precision battery monitors, weigh scales, and medical instrumentation requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for LTC6655LNCHMS8-5#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. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.

The LTC6655 family was engineered specifically for metrology-grade voltage reference applications-prioritizing ultra-low noise, minimal thermal hysteresis, and guaranteed high-temperature operation in compact packages like MSOP-8 and hermetic LS8.

FAQ

What is the minimum input voltage required for stable operation of the LTC6655LNCHMS8-5#TRPBF?

The LTC6655LNCHMS8-5#TRPBF requires a minimum input voltage of VOUT + 0.5V = 5.5V for stable operation across its full –40°C to 125°C temperature range. This dropout specification ensures consistent regulation even under worst-case load and temperature conditions, and is verified during production testing at all three temperature extremes.

How does the NR pin on the LTC6655LNCHMS8-5#TRPBF reduce output noise?

The NR pin on the LTC6655LNCHMS8-5#TRPBF connects to an internal noise-reduction circuit that forms a low-pass filter with an external capacitor. When a 10µF capacitor is placed between NR and GND, it reduces 0.1Hz–10Hz peak-to-peak noise from 0.25ppm to 0.12ppm, as confirmed in the LTC6655LN datasheet Figure G34 and Electrical Characteristics table.

Is the LTC6655LNCHMS8-5#TRPBF pin-compatible with standard LTC6655-5V variants?

No-the LTC6655LNCHMS8-5#TRPBF uses Pin 6 as NR (Noise Reduction), whereas standard LTC6655-5V MSOP variants use Pin 6 as VOUT_S (sense). This functional pin difference means PCB layout changes are required; the LTC6655LNCHMS8-5#TRPBF is not a drop-in replacement for non-LN versions despite identical package and pin count.

What is the long-term drift specification for the LTC6655LNCHMS8-5#TRPBF?

The LTC6655LNCHMS8-5#TRPBF does not specify long-term drift separately in the provided datasheet revision J. Long-term drift data is published only for MSOP and LS8 packages of the base LTC6655 (60ppm/√kHr for MSOP, 20ppm/√kHr for LS8), but no value is given for the LTC6655LN variant in either package-making this parameter undefined for LTC6655LNCHMS8-5#TRPBF per official documentation.

Can the LTC6655LNCHMS8-5#TRPBF drive a 5mA load while maintaining specified accuracy?

Yes-the LTC6655LNCHMS8-5#TRPBF is fully specified to source and sink ±5mA with ≤14ppm/mA load regulation error over –40°C to 125°C. This performance is validated in the Electrical Characteristics table (Load Regulation row for LTC6655LNMS8) and supports direct driving of precision DACs, op-amp bias networks, and sensor excitation circuits without external buffering.

LTC6655LNCHMS8-5#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):: 5V

Voltage - Output (Max):: -

Current - Output:: 5 mA

Tolerance:: ±0.05%

Temperature Coefficient:: 5ppm/°C

Noise - 0.1Hz to 10Hz:: 0.25ppmp-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

LTC6655LNCHMS8-5#TRPBF FAQ

1.How can I place an order for LTC6655LNCHMS8-5#TRPBF through Aetrix?

Please submit a Request for Quotation (RFQ) for LTC6655LNCHMS8-5#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 LTC6655LNCHMS8-5#TRPBF reliable?

The price and inventory of LTC6655LNCHMS8-5#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6655LNCHMS8-5#TRPBF is usually 5 days.

3.What payment methods are accepted for LTC6655LNCHMS8-5#TRPBF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6655LNCHMS8-5#TRPBF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for LTC6655LNCHMS8-5#TRPBF?

LTC6655LNCHMS8-5#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your LTC6655LNCHMS8-5#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 LTC6655LNCHMS8-5#TRPBF?

For technical support, including LTC6655LNCHMS8-5#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6655LNCHMS8-5#TRPBF requirements.

6.How does Aetrix verify that LTC6655LNCHMS8-5#TRPBF is sourced from the original manufacturer or authorized distributors?

All LTC6655LNCHMS8-5#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 LTC6655LNCHMS8-5#TRPBF meets industry standards.

7.What is the process for return or replacement of LTC6655LNCHMS8-5#TRPBF?

All LTC6655LNCHMS8-5#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6655LNCHMS8-5#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 LTC6655LNCHMS8-5#TRPBF part is unused and in its original packaging.

Return procedure for LTC6655LNCHMS8-5#TRPBF:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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