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Analog Devices Inc. LT6654BHS6-2.5#TRMPBF
- Part No.:
- LT6654BHS6-2.5#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
LT6654BHS6-2.5#TRMPBF.pdf
- Description:
- IC VREF SERIES 0.1% TSOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:3,202
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Product details
Overview
LT6654BHS6-2.5#TRMPBF from Analog Devices is a precision 2.5V voltage reference IC in SOT-23-6 package, featuring ±0.10% initial accuracy, 20ppm/°C max temperature drift, 1.6ppmP-P (0.1Hz–10Hz) low noise, ±10mA output drive, and operation from –40°C to 125°C. It serves as a stable reference for high-resolution ADCs and DACs in automotive sensor signal conditioning.
For engineers reviewing the LT6654BHS6-2.5#TRMPBF datasheet, LT6654BHS6-2.5#TRMPBF pinout, LT6654BHS6-2.5#TRMPBF application, or LT6654BHS6-2.5#TRMPBF equivalent, key selection criteria include guaranteed performance over extended temperature range, sink/source capability for bidirectional biasing, and low thermal hysteresis in TSOT-23 packaging.
Technical Context
The LT6654BHS6-2.5#TRMPBF employs curvature-compensated bandgap architecture with internal buffered output stage, enabling precise load regulation and low output impedance. Its design supports both sourcing and sinking up to ±10mA while maintaining 8ppm/mA max load regulation (source) and 20ppm/mA max (sink) across –40°C to 125°C.
It operates from input voltages as low as (VOUT + 0.5V) up to 36V, with 100mV max dropout at 10mA source current. Line regulation is specified at 5ppm/V (max) for VIN from 3.0V to 36V, and long-term drift is 60ppm/√kHr in the TSOT-23 package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.5V nominal, tightly regulated for 16-bit+ data converter reference rails |
| Initial Accuracy | ±0.10% max - ensures ≤2.5mV absolute error at room temperature |
| Temp Coefficient | 20ppm/°C max - limits drift to ±250µV over –40°C to 125°C span |
| Output Noise | 1.6ppmP-P (0.1Hz–10Hz) - contributes <4µVP-P uncertainty in precision measurements |
| Supply Range | 2.95V to 36V - supports wide-input industrial and automotive power rails |
| Output Drive | ±10mA - enables direct driving of ADC reference inputs and op-amp bias networks |
| Operating Temp | –40°C to 125°C - qualified for under-hood automotive and high-temp industrial use |
Pinout & Package
LT6654BHS6-2.5#TRMPBF uses a 6-lead Plastic TSOT-23 (S6) package, 1mm profile, RoHS-compliant, tape-and-reel (500 pcs).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 2) | Primary Device Ground | Star-ground connection point for load and internal circuitry; must be low-impedance |
| VIN (Pin 4) | Power Supply Input | Accepts 2.95V–36V; requires ≥0.1µF bypass capacitor to GND |
| VOUT (Pin 5) | Reference Output | 2.5V buffered output; requires ≥1µF load capacitor for stability |
| VOUT (Pin 6) | Reference Output | Internally tied to Pin 5; must be connected externally for optimal load regulation |
| DNC (Pin 1) | Do Not Connect | Internally connected; external connection risks leakage and accuracy degradation |
| DNC (Pin 3) | Do Not Connect | Internally connected; floating or grounding may impair thermal performance |
Key Features
| Feature | Design Value |
|---|---|
| Sink & source capability | ±10mA bidirectional drive eliminates need for external buffer in many biasing circuits |
| Low thermal hysteresis | 40ppm max over –40°C ↔ 125°C cycle - critical for repeatable calibration in field-deployed instruments |
| Wide supply range | Operates down to (VOUT + 0.5V) - allows use with low-headroom supplies like 3.3V LDOs |
| AEC-Q100 qualified | H-grade (–40°C to 125°C) version meets automotive reliability requirements for engine control modules |
| Low long-term drift | 60ppm/√kHr - ensures <±120ppm total drift after 4000 hours, supporting 10+ year system lifetime |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Temperature Transmitter |
|---|---|
Use Scenario: Reference for 24-bit sigma-delta ADC measuring thermocouple or RTD signals in exhaust gas recirculation (EGR) valve position feedback. IC Role / Device Role / Timing Role: Precision 2.5V reference for ADC conversion, providing absolute voltage基准 for cold-junction compensation and linearization. Use Value: 20ppm/°C drift and 40ppm hysteresis ensure ≤0.05% full-scale error over vehicle lifetime, meeting ASAM MCD-2 MC functional safety constraints. | Use Scenario: Reference for 16-bit SAR ADC in 4–20mA loop-powered temperature transmitter operating in boiler rooms (up to 125°C ambient). IC Role / Device Role / Timing Role: Stable excitation and reference source for ratiometric bridge measurement and analog output DAC. Use Value: ±10mA drive supports simultaneous ADC reference and DAC reference loading without gain error; 36V max input accommodates 24V loop supply with margin. |
| Portable High-Resolution DMM | Medical Patient Monitor Front-End |
Use Scenario: Primary reference in handheld 6½-digit digital multimeter using auto-ranging and dual-slope integration. IC Role / Device Role / Timing Role: Low-noise 2.5V reference for integrator and comparator thresholds in precision DC voltage measurement path. Use Value: 1.6ppmP-P noise ensures sub-µV baseline stability during 10-second integration windows, enabling true 22-bit ENOB. | Use Scenario: Reference for ECG analog front-end ADC and programmable gain amplifier in battery-powered bedside monitor. IC Role / Device Role / Timing Role: Low-power, high-stability reference for biopotential signal digitization with >100dB SNR requirement. Use Value: 350µA typical supply current extends battery life; ±10mA sink capability allows active filtering of reference node in noisy mixed-signal PCB layouts. |
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 | 2.5V, ±0.05% initial accuracy, 3ppm/°C drift, SOIC-8, 1.2mA supply current | Higher accuracy and lower drift, but larger package and higher power - suited for lab-grade instrumentation, not space-constrained automotive modules | Select REF5025IDR when ultra-low drift dominates over size and power; avoid if board area or quiescent current is constrained. |
| ADR4525BRZ | 2.5V, ±0.02% initial accuracy, 2ppm/°C drift, SOIC-8, 950µA supply current, AEC-Q100 Grade 1 | Superior accuracy and drift specs, automotive-qualified, but no sink capability and higher cost | Choose ADR4525BRZ for mission-critical automotive ADAS sensors where 2ppm/°C drift is mandatory; retain LT6654BHS6-2.5#TRMPBF when bidirectional drive or cost sensitivity applies. |
Compared with REF5025IDR and ADR4525BRZ, the LT6654BHS6-2.5#TRMPBF trades minor accuracy and drift for integrated sink/source capability, compact TSOT-23 footprint, and lower quiescent current - making it optimal for space- and power-constrained embedded systems requiring robustness across wide temperature excursions.
Availability
LT6654BHS6-2.5#TRMPBF is available at Aetrix Electronics and suitable for automotive engine control units, industrial temperature transmitters, and portable high-resolution DMMs requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for LT6654BHS6-2.5#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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LT6654 family was designed for high-accuracy, low-drift, low-noise voltage referencing in harsh environments - specifically targeting automotive, industrial sensing, and portable precision instrumentation where long-term stability and wide-temperature operation are non-negotiable.
FAQ
What is the maximum input voltage rating for LT6654BHS6-2.5#TRMPBF?
The absolute maximum input voltage for LT6654BHS6-2.5#TRMPBF is 38V relative to GND. However, the recommended operating range is 2.95V to 36V. Exceeding 36V may degrade long-term reliability, and operation above 38V risks permanent damage per Absolute Maximum Ratings. Always use ≥0.1µF ceramic bypass capacitor on VIN to GND.
Does LT6654BHS6-2.5#TRMPBF support sinking current, and how much?
Yes, LT6654BHS6-2.5#TRMPBF supports sinking up to –10mA while maintaining specified accuracy. Its bidirectional output stage allows it to function as both a positive reference and a precision negative reference sink. At –10mA sink, load regulation is 20ppm/mA max, and dropout remains within specification. This enables active termination and biasing in ratiometric sensor interfaces.
What is the typical turn-on time for LT6654BHS6-2.5#TRMPBF?
The typical turn-on time for LT6654BHS6-2.5#TRMPBF is 150µs to 0.1% settling with CLOAD = 1µF and CIN = 0.1µF. This fast startup supports power-gated subsystems in automotive and portable applications. Turn-on time increases with larger load capacitance; for 10µF, expect ~1.2ms. No external enable pin is provided - device powers up whenever VIN exceeds minimum threshold.
Is LT6654BHS6-2.5#TRMPBF AEC-Q100 qualified?
Yes, LT6654BHS6-2.5#TRMPBF is AEC-Q100 qualified for automotive applications. It belongs to the H-grade variant (–40°C to 125°C), with full characterization and stress testing per AEC-Q100 Rev H. The part marking "LTFJY" and suffix "#TRMPBF" confirm its automotive-grade qualification. It is approved for use in engine control, transmission, and body electronics modules.
What output capacitor value is required for stable operation of LT6654BHS6-2.5#TRMPBF?
LT6654BHS6-2.5#TRMPBF requires a minimum 1µF ceramic output capacitor (X7R or better) connected directly between VOUT and GND for stability across all load conditions and temperatures. Larger values (e.g., 10µF) improve PSRR and transient response but increase turn-on time. Do not omit or reduce below 1µF - instability or oscillation may occur, degrading reference accuracy and noise performance.
LT6654BHS6-2.5#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):
- 2.5V
- Voltage - Output (Max):
- -
- Current - Output:
- 10 mA
- Tolerance:
- ±0.1%
- Temperature Coefficient:
- 20ppm/°C
- Noise - 0.1Hz to 10Hz:
- 1.5ppmp-p
- Noise - 10Hz to 10kHz:
- 2ppmrms
- Voltage - Input:
- 3V ~ 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
LT6654BHS6-2.5#TRMPBF FAQ
1.How can I place an order for LT6654BHS6-2.5#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT6654BHS6-2.5#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 LT6654BHS6-2.5#TRMPBF reliable?
The price and inventory of LT6654BHS6-2.5#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT6654BHS6-2.5#TRMPBF is usually 5 days.
3.What payment methods are accepted for LT6654BHS6-2.5#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT6654BHS6-2.5#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT6654BHS6-2.5#TRMPBF?
LT6654BHS6-2.5#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT6654BHS6-2.5#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 LT6654BHS6-2.5#TRMPBF?
For technical support, including LT6654BHS6-2.5#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT6654BHS6-2.5#TRMPBF requirements.
6.How does Aetrix verify that LT6654BHS6-2.5#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LT6654BHS6-2.5#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 LT6654BHS6-2.5#TRMPBF meets industry standards.
7.What is the process for return or replacement of LT6654BHS6-2.5#TRMPBF?
All LT6654BHS6-2.5#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT6654BHS6-2.5#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 LT6654BHS6-2.5#TRMPBF part is unused and in its original packaging.
Return procedure for LT6654BHS6-2.5#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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