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Analog Devices Inc. LT6654BHS6-1.25#TRMPBF
- Part No.:
- LT6654BHS6-1.25#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
LT6654BHS6-1.25#TRMPBF.pdf
- Description:
- IC VREF SERIES 0.1% TSOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:3,422
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Product details
Overview
LT6654BHS6-1.25#TRMPBF from Analog Devices is a precision 1.25V voltage reference IC with ±0.10% initial accuracy, 20ppm/°C max temperature drift, and ±10mA output drive capability in a 6-lead SOT-23 package. It operates from 2.4V to 36V input, delivers 1.6ppmP-P (0.1Hz–10Hz) low-noise output, and is fully specified over –40°C to 125°C for high-reliability industrial and automotive sensing systems.
For engineers reviewing the LT6654BHS6-1.25#TRMPBF datasheet, LT6654BHS6-1.25#TRMPBF pinout, LT6654BHS6-1.25#TRMPBF application, or LT6654BHS6-1.25#TRMPBF equivalent, this page provides verified specifications, thermal stability data, load regulation behavior at ±10mA, and validated alternatives for high-accuracy ADC/DAC biasing and precision regulator feedback loops.
Technical Context
The LT6654BHS6-1.25#TRMPBF uses curvature-compensated bandgap architecture with internal buffering to achieve low output impedance (<1Ω at DC) and precise load regulation (≤8ppm/mA sourcing, ≤20ppm/mA sinking). Its dropout voltage is ≤100mV at ±10mA, enabling operation with minimal headroom above VOUT.
It supports bidirectional current flow (source/sink), allowing use as a precision negative reference when configured with external circuitry. Thermal hysteresis is 40ppm over –40°C to 125°C, and long-term drift is 60ppm/√kHr - critical for systems requiring calibration stability over years of field operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.25V ±0.10% (±1.25mV) initial tolerance - sets absolute accuracy floor for 12-bit+ data acquisition systems. |
| Temp Coefficient | 20ppm/°C max over –40°C to 125°C - contributes ≤2.5mV error across full automotive temperature range. |
| Output Noise | 1.6ppmP-P (0.1Hz–10Hz) = 2.0µVP-P - enables <16-bit effective resolution in low-frequency precision measurements. |
| Line Regulation | 5ppm/V max (2.4V–36V input) - ensures <0.63mV output shift over full supply range, critical for unregulated battery inputs. |
| Load Regulation | 8ppm/mA max sourcing, 20ppm/mA max sinking - guarantees ≤0.1mV shift at 10mA load, supporting active filter and op-amp biasing. |
| Supply Range | 2.4V to 36V - allows direct connection to 3.3V, 5V, 12V, or 24V rails without LDO pre-regulation. |
| Operating Temp | –40°C to 125°C - qualified for under-hood automotive and high-temperature industrial control environments. |
Pinout & Package
Package: 6-lead Plastic TSOT-23 (1mm height), RoHS-compliant, tape-and-reel (500 pcs).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 2) | Primary Device Ground | Mandatory star-ground connection point for load return and bypass capacitor; defines reference potential for all internal circuitry. |
| VIN (Pin 4) | Power Supply Input | Accepts 2.4V–36V; requires ≥0.1µF ceramic bypass to Pin 2 to suppress supply noise and ensure stability. |
| VOUT (Pin 6) | Reference Output | Delivers regulated 1.25V; requires ≥1µF output capacitor to ground for transient stability and low-noise performance. |
| DNC (Pin 1) | Do Not Connect | Internally connected; external connection risks leakage current injection and output inaccuracy. |
| NC (Pin 3) | No Internal Connection | May be left floating or tied to GND/VIN/VOUT; no functional impact but avoids floating node in PCB layout. |
| DNC (Pin 5) | Do Not Connect | Internally connected; must remain unconnected to prevent parasitic coupling into sensitive bandgap core. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional ±10mA Drive | Enables use as positive or negative reference without external amplification - reduces BOM count in dual-supply instrumentation. |
| Low 1.6ppmP-P Noise | Minimizes quantization uncertainty in 24-bit delta-sigma ADCs; eliminates need for external noise filtering in high-resolution sensor front-ends. |
| 20ppm/°C Drift (B-Grade) | Meets AEC-Q100 Grade 0 requirements for automotive cabin and powertrain modules operating up to 125°C ambient. |
| 100mV Max Dropout | Permits operation from 1.35V input - supports ultra-low-voltage battery-powered IoT sensors with single-cell LiFePO4 or coin-cell sources. |
| –40°C to 125°C Specified Range | Eliminates derating calculations for industrial PLC I/O modules and motor drive feedback circuits exposed to wide ambient swings. |
Applications
| Automotive Cabin Sensors | High-Temp Industrial PLC I/O |
|---|---|
|
Use Scenario: Cabin temperature, humidity, and CO₂ sensing modules in HVAC control units. IC Role / Device Role / Timing Role: Provides stable 1.25V reference for 16-bit SAR ADCs digitizing analog sensor outputs. Use Value: 20ppm/°C drift ensures <±2.5mV error over –40°C to 85°C cabin range, maintaining ±0.5°C temperature measurement accuracy. |
Use Scenario: Analog input modules in programmable logic controllers deployed near motors or furnaces. IC Role / Device Role / Timing Role: Supplies reference voltage for isolated 24-bit sigma-delta ADCs measuring 4–20mA loop signals. Use Value: 1.6ppmP-P noise enables true 22-bit ENOB at 10SPS, meeting IEC 61000-6-2 immunity requirements for factory-floor noise. |
| Portable Medical Instrumentation | Test & Measurement Calibration Sources |
|
Use Scenario: Battery-powered blood glucose meters and portable ECG monitors. IC Role / Device Role / Timing Role: Reference for low-power 12-bit ADCs sampling electrochemical or biopotential signals. Use Value: ±10mA drive supports on-chip PGA biasing; 350µA supply current extends single AAA battery life to >12 months. |
Use Scenario: Benchtop multimeters and automated test equipment requiring traceable voltage standards. IC Role / Device Role / Timing Role: Primary reference in 7½-digit DMM front-end, cascaded with chopper-stabilized amplifiers. Use Value: 60ppm/√kHr long-term drift limits annual recalibration drift to <0.075mV - meets ANSI C12.10 Class 0.1 accuracy class. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF5012IDR | 1.2V output, 3ppm/°C max drift, 0.05% initial accuracy, SOIC-8 package | Lower drift but fixed 1.2V output; requires level-shifting for 1.25V system compatibility | Select for ultra-stable lab-grade instruments where 0.05V output mismatch can be accommodated via gain adjustment. |
| ADR4512BARMZ | 1.2V output, 12ppm/°C max drift, 0.06% initial accuracy, MSOP-8 package | Higher supply current (950µA), no sink capability, narrower temp range (–40°C to 125°C same) | Choose when board space permits MSOP-8 and system design tolerates 1.2V nominal output with tighter drift budget. |
Compared with REF5012IDR and ADR4512BARMZ, the LT6654BHS6-1.25#TRMPBF offers exact 1.25V output matching legacy 1.25V-based designs (e.g., LM4040 derivatives), bidirectional current capability for flexible topology use, and SOT-23 footprint for space-constrained portable devices - making it the optimal drop-in upgrade for existing 1.25V reference nodes.
Availability
LT6654BHS6-1.25#TRMPBF is available at Aetrix Electronics and suitable for automotive cabin sensors, high-temperature industrial PLC I/O modules, and portable medical instrumentation requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for LT6654BHS6-1.25#TRMPBF 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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets since 1965.
The LT6654 family was designed for precision voltage reference applications demanding low drift, low noise, and wide supply range - specifically targeting high-resolution data acquisition, sensor signal conditioning, and automotive subsystems where accuracy must be maintained across extreme temperatures.
FAQ
What is the maximum input voltage for LT6654BHS6-1.25#TRMPBF?
The LT6654BHS6-1.25#TRMPBF supports an absolute maximum input voltage of 38V, with recommended operating range from 2.4V to 36V. At VIN = 36V, line regulation remains ≤5ppm/V, ensuring stable 1.25V output even under unregulated industrial power conditions. Exceeding 38V risks permanent damage per Absolute Maximum Ratings.
Can LT6654BHS6-1.25#TRMPBF sink current, and how much?
Yes, the LT6654BHS6-1.25#TRMPBF can sink up to –10mA while maintaining output accuracy within specification. Its bidirectional output stage allows use as a negative reference when the output is grounded and VIN is applied to what becomes the "output" node. Load regulation under sinking is ≤20ppm/mA, verified over –40°C to 125°C.
What output capacitor value is required for stable operation of LT6654BHS6-1.25#TRMPBF?
A minimum 1µF ceramic capacitor is required between VOUT (Pin 6) and GND (Pin 2) for stable operation and optimal noise performance. Larger values (e.g., 10µF) further reduce high-frequency noise but increase turn-on time (150µs typical with 1µF). The capacitor must be placed adjacent to the device with short, low-inductance traces to prevent oscillation.
Is LT6654BHS6-1.25#TRMPBF qualified for automotive applications?
Yes, the LT6654BHS6-1.25#TRMPBF is rated for operation from –40°C to 125°C and is part of Analog Devices' automotive-grade portfolio. While not marked with a #W suffix (which denotes AEC-Q100 certified variants), its H-grade temperature rating, 40ppm thermal hysteresis, and robust construction meet functional requirements for non-safety-critical automotive cabin and body electronics.
How does the 1.6ppmP-P noise of LT6654BHS6-1.25#TRMPBF translate to µV in a 1.25V system?
The 1.6ppmP-P noise specification corresponds to 2.0µVP-P (1.25V × 1.6 × 10−6) over 0.1Hz–10Hz bandwidth. This low noise floor directly enables 16-bit effective resolution in precision ADC applications without additional filtering, and contributes <0.00016% of full-scale error - critical for metrology-grade instrumentation using the LT6654BHS6-1.25#TRMPBF.
LT6654BHS6-1.25#TRMPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- SOT-23-6 Thin, TSOT-23-6
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 1.25V
- Voltage - Output (Max):
- -
- Current - Output:
- 10 mA
- Tolerance:
- ±0.1%
- Temperature Coefficient:
- 20ppm/°C
- Noise - 0.1Hz to 10Hz:
- 0.8ppmp-p
- Noise - 10Hz to 10kHz:
- 2ppmrms
- Voltage - Input:
- 2.4V ~ 36V
- Current - Supply:
- 600µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-6
LT6654BHS6-1.25#TRMPBF FAQ
1.How can I place an order for LT6654BHS6-1.25#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT6654BHS6-1.25#TRMPBF 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 LT6654BHS6-1.25#TRMPBF reliable?
The price and inventory of LT6654BHS6-1.25#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT6654BHS6-1.25#TRMPBF is usually 5 days.
3.What payment methods are accepted for LT6654BHS6-1.25#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT6654BHS6-1.25#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT6654BHS6-1.25#TRMPBF?
LT6654BHS6-1.25#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT6654BHS6-1.25#TRMPBF 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 LT6654BHS6-1.25#TRMPBF?
For technical support, including LT6654BHS6-1.25#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT6654BHS6-1.25#TRMPBF requirements.
6.How does Aetrix verify that LT6654BHS6-1.25#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LT6654BHS6-1.25#TRMPBF 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 LT6654BHS6-1.25#TRMPBF meets industry standards.
7.What is the process for return or replacement of LT6654BHS6-1.25#TRMPBF?
All LT6654BHS6-1.25#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT6654BHS6-1.25#TRMPBF, 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 LT6654BHS6-1.25#TRMPBF part is unused and in its original packaging.
Return procedure for LT6654BHS6-1.25#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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