My Inquiry
My Account
Analog Devices Inc. LTC6655CHMS8-3.3#TRPBF
- Part No.:
- LTC6655CHMS8-3.3#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC6655CHMS8-3.3#TRPBF.pdf
- Description:
- IC VREF SERIES 0.05% 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,956
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC6655CHMS8-3.3#TRPBF from Analog Devices is a precision bandgap voltage reference delivering 3.3V output with ±0.05% initial accuracy, 2ppm/°C max temperature coefficient, and 0.25ppmP-P (0.1Hz–10Hz) low-frequency noise. It operates from VIN = VOUT + 0.5V (≥3.8V) to 13.2V, supports ±5mA load current, and is fully specified over –40°C to 125°C - enabling use in high-resolution data acquisition, industrial sensor front-ends, and automotive-grade instrumentation.
For engineers reviewing the LTC6655CHMS8-3.3#TRPBF datasheet, LTC6655CHMS8-3.3#TRPBF pinout, LTC6655CHMS8-3.3#TRPBF application, or LTC6655CHMS8-3.3#TRPBF equivalent, key selection criteria include its guaranteed 2ppm/°C drift over full temperature range, MSOP-8 package compatibility with space-constrained PCBs, low dropout (500mV), and absence of noise reduction (NR) pin - distinguishing it from LTC6655LN variants.
Technical Context
This is a non-LN (Low Noise) variant of the LTC6655 family: it lacks the NR pin and associated wideband noise filtering capability, but retains the same core bandgap architecture with advanced curvature compensation. Its dual-output configuration (VOUT_F and VOUT_S) enables Kelvin sensing for high-accuracy load regulation correction.
It features active shutdown (SHDN pin), source/sink capability (±5mA), and superior line/load regulation (<10ppm/mA typical). The device uses internal ground-star topology at Pin 4 and requires external 0.1µF input and 2.7–100µF output capacitors for stability and performance compliance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.3V ±0.05% (±1.65mV) at 25°C - enables direct interface with 3.3V ADC references without trimming. |
| Tempco | ≤2ppm/°C over –40°C to 125°C - ensures <±264ppm total drift across full range, critical for uncalibrated systems. |
| Low-Freq Noise | 0.25ppmP-P (0.1Hz–10Hz) - translates to 825nVP-P, supporting 24-bit+ SAR and delta-sigma ADCs. |
| Load Regulation | <10ppm/mA - limits output error to <±33µV per mA load change, essential for dynamic sensor excitation. |
| Dropout Voltage | 500mV - allows operation from 3.8V supply, compatible with 4.0V LDO outputs or battery-powered systems. |
| Supply Range | 3.8V to 13.2V - supports wide-input industrial rails and avoids need for dedicated 5V bias supply. |
| Shutdown Current | <20µA - enables µA-level power budgeting in wake-on-event sensor nodes. |
Pinout & Package
Package: 8-lead plastic MSOP (MS8), 3mm × 3mm, 0.65mm pitch, exposed pad not connected. Thermal resistance θJA = 300°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SHDN) | Active-low shutdown control | Pull to GND to reduce supply current to <20µA; internal pull-up ensures default ON if floating. |
| 2 (VIN) | Power supply input | Requires ≥0.1µF ceramic bypass to GND; minimum 3.8V for 3.3V output. |
| 3, 5, 8 (GND) | Ground terminals | All must be connected to low-impedance ground plane; star grounding at Pin 4 required. |
| 4 (GND) | Main ground reference | Star connection point for all GND pins; critical for minimizing ground bounce and load regulation error. |
| 6 (VOUT_S) | Sense input for load regulation correction | Connect directly at load to cancel trace IR drop; sinks 2mA sense current. |
| 7 (VOUT_F) | Force output driver | Sources/sinks ±5mA; requires 2.7–100µF output capacitor for stability and noise performance. |
Key Features
| Feature | Design Value |
|---|---|
| Kelvin sensing architecture | VOUT_S/VOUT_F separation reduces load regulation error to <10ppm/mA even with 100mΩ PCB trace resistance. |
| Full-temperature grade | 100% tested at –40°C, 25°C, and 125°C - eliminates need for system-level burn-in or derating in automotive/industrial deployments. |
| High sink/source capability | ±5mA drive supports direct excitation of resistive bridges, RTDs, and current-mode DACs without external buffers. |
| Low long-term drift | 60ppm/√kHr (MSOP) - predicts only ~190ppm drift after 10 years, enabling decade-long calibration intervals. |
| Robust supply rejection | 40ppm/V line regulation - maintains output accuracy despite ±10% rail variation in noisy industrial environments. |
Applications
| High-Resolution Data Acquisition | Automotive Battery Monitoring |
|---|---|
Use Scenario: 24-bit delta-sigma ADC system measuring thermocouple or strain gauge signals in portable test equipment. IC Role / Device Role / Timing Role: Precision voltage reference for ADC's analog input scaling and digital-to-analog conversion reference. Use Value: 0.25ppmP-P noise and 2ppm/°C drift ensure ≤1LSB error over temperature and time, eliminating recalibration during field use. | Use Scenario: Real-time monitoring of 12V lead-acid or 48V Li-ion battery packs in EV charging infrastructure. IC Role / Device Role / Timing Role: Stable 3.3V reference for multiplexed voltage dividers feeding ADC inputs. Use Value: ±0.05% initial accuracy and –40°C to 125°C operation guarantee consistent SOC estimation across ambient extremes. |
| Industrial Weigh Scales | Medical Patient Monitor Front-End |
Use Scenario: Load cell signal conditioning in Class III legal-for-trade weighing systems requiring NTEP certification. IC Role / Device Role / Timing Role: Primary reference for instrumentation amplifier gain-setting and ADC reference voltage. Use Value: 30ppm thermal hysteresis (MSOP) and 60ppm/√kHr long-term drift meet metrology-grade stability requirements. | Use Scenario: ECG/EEG analog front-end where microvolt-level signal integrity is critical. IC Role / Device Role / Timing Role: Reference for programmable gain amplifier (PGA) and 24-bit medical-grade ADC. Use Value: Low 1/f noise and absence of piezoelectric coupling (vs. X7R caps) preserve signal fidelity in vibration-prone clinical environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC6655BHMS8-3.3#TRPBF | Higher initial accuracy (±0.025% vs. ±0.05%) and lower tempco (1ppm/°C vs. 2ppm/°C); otherwise identical pinout, specs, and package. | Better suited for metrology-grade calibrators or lab instruments requiring tighter initial tolerance. | Select when absolute initial accuracy dominates cost and long-term drift is secondary. |
| REF5033QPWRQ1 | Lower noise (0.1ppmP-P), AEC-Q100 qualified, but higher tempco (3ppm/°C) and no Kelvin sensing (single VOUT). | Targeted at automotive ECUs needing qualification, but less suitable for high-dynamic-range industrial DAQ. | Choose for automotive production where AEC-Q100 compliance is mandatory and Kelvin sensing is unnecessary. |
Compared with LTC6655BHMS8-3.3#TRPBF, this C-grade part trades 0.025% initial accuracy for lower cost while retaining identical temperature stability, noise, and load regulation - making it optimal for volume industrial systems. Versus REF5033QPWRQ1, it offers superior load regulation and Kelvin sensing but lacks automotive qualification.
Availability
LTC6655CHMS8-3.3#TRPBF is available at Aetrix Electronics and suitable for high-resolution data acquisition, automotive battery monitoring, and industrial weigh scale applications requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for LTC6655CHMS8-3.3#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, automotive, communications, and healthcare markets.
The LTC6655 product line was designed specifically for metrology-grade voltage references demanding ultra-low noise, sub-3ppm/°C drift, and full-temperature-range validation - targeting applications where calibration overhead must be minimized.
FAQ
What is the maximum input voltage for LTC6655CHMS8-3.3#TRPBF?
The absolute maximum input voltage for LTC6655CHMS8-3.3#TRPBF is 13.2V relative to GND. Operation above this level risks permanent damage. For reliable performance, VIN should remain between 3.8V (VOUT + 0.5V) and 13.2V, with recommended bypassing using ≥0.1µF ceramic capacitor close to Pin 2 (VIN) and GND.
Does LTC6655CHMS8-3.3#TRPBF include a noise reduction (NR) pin?
No, LTC6655CHMS8-3.3#TRPBF does not have a noise reduction (NR) pin. It belongs to the standard LTC6655 series, not the LTC6655LN (Low Noise) variant. The NR pin is exclusive to LN versions (e.g., LTC6655LNCHMS8-3.3#TRPBF) and enables external capacitor-based wideband noise filtering - a feature absent in this C-grade non-LN part.
Can LTC6655CHMS8-3.3#TRPBF drive a 5mA load while maintaining specification?
Yes, LTC6655CHMS8-3.3#TRPBF is fully specified to source and sink ±5mA load current across –40°C to 125°C. Its load regulation is guaranteed ≤10ppm/mA, meaning output deviation remains within ±33µV per mA of load change - well within its ±0.05% (±1.65mV) initial accuracy band under full load.
What is the purpose of the VOUT_S pin on LTC6655CHMS8-3.3#TRPBF?
The VOUT_S (Pin 6) on LTC6655CHMS8-3.3#TRPBF is the sense input for Kelvin connection. It monitors voltage at the remote load to compensate for IR drop in PCB traces. Connected directly at the load, it enables the IC to adjust VOUT_F (Pin 7) to maintain precise 3.3V at the point of use - reducing load regulation error to <10ppm/mA even with significant trace resistance.
Is LTC6655CHMS8-3.3#TRPBF qualified for automotive applications?
LTC6655CHMS8-3.3#TRPBF is specified from –40°C to 125°C and 100% tested across that range, meeting the temperature requirements of many automotive subsystems. However, it is not AEC-Q100 qualified. For production automotive ECUs requiring formal qualification, consider alternatives like REF5033QPWRQ1 - whereas LTC6655CHMS8-3.3#TRPBF is ideal for industrial and test equipment where full temperature coverage is needed without formal automotive certification.
LTC6655CHMS8-3.3#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):
- 3.3V
- 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:
- 0.67ppmrms
- 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
LTC6655CHMS8-3.3#TRPBF FAQ
1.How can I place an order for LTC6655CHMS8-3.3#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6655CHMS8-3.3#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 LTC6655CHMS8-3.3#TRPBF reliable?
The price and inventory of LTC6655CHMS8-3.3#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6655CHMS8-3.3#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC6655CHMS8-3.3#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6655CHMS8-3.3#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6655CHMS8-3.3#TRPBF?
LTC6655CHMS8-3.3#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6655CHMS8-3.3#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 LTC6655CHMS8-3.3#TRPBF?
For technical support, including LTC6655CHMS8-3.3#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6655CHMS8-3.3#TRPBF requirements.
6.How does Aetrix verify that LTC6655CHMS8-3.3#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC6655CHMS8-3.3#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 LTC6655CHMS8-3.3#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC6655CHMS8-3.3#TRPBF?
All LTC6655CHMS8-3.3#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6655CHMS8-3.3#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 LTC6655CHMS8-3.3#TRPBF part is unused and in its original packaging.
Return procedure for LTC6655CHMS8-3.3#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC6655CHMS8-3.3#TRPBF Tags
-
TL431AIDBZR
Texas Instruments
-
TL431BQDBZR
Texas Instruments
-
AN431AN-ATRG1
Diodes Incorporated
-
LM4040CYM3-2.5-TR
Microchip Technology
-
LM4040CYM3-4.1-TR
Microchip Technology
-
LM4040EIM3-2.5/NOPB
Texas Instruments
-
AZ431LBNTR-G1
Diodes Incorporated
-
LM4040D20IDBZR
Texas Instruments
-
LM4041DIM3-ADJ/NOPB
Texas Instruments
-
LM4040DIM3X-2.5/NOPB
Texas Instruments
-
LM4040DIM3-2.5/NOPB
Texas Instruments
-
AZ431LANTR-G1
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
