Analog Devices Inc. LTC6655LNBHMS8-5#TRPBF

Overview

LTC6655LNBHMS8-5#TRPBF from Analog Devices is a precision 5V low-noise bandgap voltage reference in an 8-lead MSOP package, featuring 0.12ppm_P-P (0.1Hz–10Hz) noise with NR pin, ±0.025% initial accuracy, and 2ppm/°C max drift over –40°C to 125°C - deployed in high-resolution ADCs for test equipment and industrial data acquisition systems.

For engineers reviewing the LTC6655LNBHMS8-5#TRPBF datasheet, LTC6655LNBHMS8-5#TRPBF pinout, LTC6655LNBHMS8-5#TRPBF application, or LTC6655LNBHMS8-5#TRPBF equivalent, key selection criteria include verified low-frequency noise performance with external NR capacitor, load regulation ≤14ppm/mA (sourcing), shutdown current <20µA, and compatibility with 2.7µF–100µF output capacitance for stable operation in metrology-grade designs.

Technical Context

The LTC6655LNBHMS8-5#TRPBF implements advanced curvature-compensated bandgap architecture with dual-output force/sense topology in standard variants-but this LN variant replaces VOUT_S with NR (Noise Reduction) pin to enable wideband noise filtering via external capacitor. Its internal buffer delivers ±5mA sourcing/sinking capability while maintaining sub-ppm noise integrity when CNR ≥10µF is applied.

Operating from VIN = VOUT + 0.5V (5.5V min) up to 13.2V, it achieves 5ppm/V line regulation and supports shutdown via active-low SHDN pin with internal pull-up. The device is fully characterized across –40°C to 125°C and 100% tested at temperature extremes, ensuring robustness in automotive and industrial environments where thermal hysteresis (30ppm over –40°C to 85°C) and long-term drift (20ppm/√kHr in LS8, not applicable here) are critical.

Key Specifications

Pinout & Package

Package: 8-lead plastic MSOP (3mm × 3mm, 0.65mm pitch), moisture sensitivity level 1, RoHS-compliant, rated for –40°C to 125°C operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADR4550BRZ and REF5050AIDR, the LTC6655LNBHMS8-5#TRPBF delivers superior low-frequency noise control via its dedicated NR pin, tighter drift spec, and integrated shutdown-making it optimal for metrology and battery-powered precision instruments where every nanovolt matters.

Availability

LTC6655LNBHMS8-5#TRPBF is available at Aetrix Electronics and suitable for high-resolution data acquisition systems, precision battery monitors, weigh scale metrology, and automotive ADAS calibration equipment requiring stable component supply across extended temperature ranges.

Supply support for LTC6655LNBHMS8-5#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 for industrial, automotive, communications, and healthcare applications.

The LTC6655 family was designed specifically for metrology-grade voltage reference needs in instrumentation, test equipment, and high-accuracy sensing - emphasizing ultra-low noise, minimal drift, and guaranteed operation across –40°C to 125°C.

FAQ

What is the minimum input voltage required for stable operation of the LTC6655LNBHMS8-5#TRPBF?

The LTC6655LNBHMS8-5#TRPBF requires a minimum input voltage of 5.5V (VOUT + 0.5V) for stable operation with ≤0.1% output error under sourcing load. This 500mV dropout enables use with low-headroom supplies such as post-LDO rails or partially discharged batteries, while maintaining full specification compliance across –40°C to 125°C.

How does the NR pin on the LTC6655LNBHMS8-5#TRPBF reduce output noise?

The NR pin on the LTC6655LNBHMS8-5#TRPBF connects to an external capacitor (10µF–100µF) to form a low-pass filter that attenuates wideband noise above ~10Hz. With 100µF, it achieves 0.12ppm_P-P (0.1–10Hz), reducing total integrated noise to <1.5µV_RMS. Leakage current into NR is <1nA, preventing measurable VOUT offset shift.

Can the LTC6655LNBHMS8-5#TRPBF drive a 5mA load while maintaining specified accuracy?

Yes - the LTC6655LNBHMS8-5#TRPBF sources and sinks ±5mA while maintaining ≤14ppm/mA load regulation (sourcing) and ≤35ppm/mA (sinking). At 5mA sourcing, this equates to ≤70ppm (350µV) deviation from nominal 5V, well within the ±0.025% (±1.25mV) initial accuracy spec when combined with drift and noise contributions.

Is the LTC6655LNBHMS8-5#TRPBF qualified for automotive applications?

Yes - the LTC6655LNBHMS8-5#TRPBF is fully specified and 100% tested over –40°C to 125°C, meeting AEC-Q100 stress test requirements for temperature cycling, HTOL, and ESD. Its 2ppm/°C drift, low hysteresis, and robust PSRR make it suitable for battery monitoring, ADAS calibration, and engine control reference circuits in automotive systems.

What output capacitor value is recommended for optimal stability and noise performance with the LTC6655LNBHMS8-5#TRPBF?

An output capacitor of 2.7µF to 100µF is required for stability. For lowest noise, 10µF–100µF X7R or film capacitors (e.g., polypropylene) are recommended - with ESR ≤0.1Ω at 100kHz. Values ≥10µF also improve transient response and reduce noise peaking; 2.7µF is minimum for stability but increases integrated noise by ~2×.