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Analog Devices Inc. LT6654AMPS6-2.5#TRM
- Part No.:
- LT6654AMPS6-2.5#TRM
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- -
- Datasheet:
-
LT6654AMPS6-2.5#TRM.pdf
- Description:
- IC VREF SERIES 0.05% TSOT-23-6
- Quantity:
- Payment:
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Inventory:3,864
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Product details
Overview
LT6654AMPS6-2.5#TRM from Analog Devices is a precision 2.5V voltage reference IC in a 6-lead TSOT-23 package, rated for –55°C to 125°C operation. It delivers ±0.05% initial accuracy, 10ppm/°C max temperature drift, 1.6ppmP-P (0.1Hz–10Hz) low noise, ±10mA output drive, and 100mV max dropout - enabling high-resolution data acquisition and automotive sensor conditioning.
For engineers reviewing the LT6654AMPS6-2.5#TRM datasheet, LT6654AMPS6-2.5#TRM pinout, LT6654AMPS6-2.5#TRM application, or LT6654AMPS6-2.5#TRM equivalent, this page provides verified specifications, thermal-hysteresis-tested performance at extended temperature, SOT-23 pin mapping, and AEC-Q100-relevant design guidance for industrial and automotive systems.
Technical Context
The LT6654AMPS6-2.5#TRM integrates a curvature-compensated bandgap core with a buffered output stage, enabling bidirectional ±10mA current sourcing/sinking while maintaining precise load regulation (≤8ppm/mA). Its architecture supports stable operation with only 1µF output capacitance and tolerates input voltages up to 36V.
Designed for extreme environments, it features low thermal hysteresis (50ppm over –55°C to 125°C), long-term drift of 60ppm/√kHr, and full specification across the MP-grade temperature range - distinguishing it from commercial- or industrial-grade variants in the LT6654 family.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.5V nominal; fixed, factory-trimmed value with no external adjustment required. |
| Initial Accuracy | ±0.05% max; ensures ≤1.25mV absolute error at 25°C before calibration. |
| Temp Coefficient | 10ppm/°C max; guarantees ≤300ppm (0.075mV) drift over full –55°C to 125°C range. |
| Output Noise | 1.6ppmP-P (0.1Hz–10Hz); contributes <1.2µVP-P uncertainty in precision ADC reference paths. |
| Load Regulation | 8ppm/mA max (sourcing); maintains stability under dynamic load changes up to ±10mA. |
| Dropout Voltage | 100mV max at 10mA; allows operation with VIN as low as 2.6V while holding 2.5V output. |
| Supply Range | Up to 36V; enables direct connection to unregulated rails in automotive or industrial power domains. |
Pinout & Package
Package: 6-lead Plastic TSOT-23 (ThinSOT™), 1mm profile, RoHS-compliant, tape-and-reel (500 pcs).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (DNC) | Do Not Connect | Internally connected; external connection risks leakage-induced error or instability. |
| Pin 2 (GND) | Primary Device Ground | Star-ground connection point for load and PCB return; must be low-impedance. |
| Pin 3 (DNC) | Do Not Connect | Internally connected; floating or tied to GND/VIN degrades accuracy and noise performance. |
| Pin 4 (VIN) | Power Input | Accepts 2.6V to 36V; requires ≥0.1µF bypass capacitor to GND for ripple rejection. |
| Pin 5 (VOUT) | Reference Output | Main 2.5V output; requires ≥1µF ceramic capacitor to GND for stability and transient response. |
| Pin 6 (VOUT) | Reference Output | Second output terminal; must be tied directly to Pin 5 for optimal load regulation and noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional Output Drive | ±10mA sourcing/sinking capability enables use as both positive and negative reference in dual-supply systems. |
| Extended Temperature Rating | –55°C to 125°C full-spec operation supports engine bay, downhole, and aerospace applications without derating. |
| Low Thermal Hysteresis | 50ppm max over –55°C ↔ 125°C cycling; critical for repeatable calibration in field-deployed instrumentation. |
| AEC-Q100 Qualified | Meets stress test requirements for automotive electronics (Grade 1), including HTOL and TC testing. |
| Low Long-Term Drift | 60ppm/√kHr; predicts <120ppm drift after 4,000 hours - essential for 10+ year system lifetime designs. |
Applications
| Automotive Engine Control Unit (ECU) | High-Temperature Industrial Sensor Transmitter |
|---|---|
|
Use Scenario: Reference for analog front-end of knock sensor signal conditioning in gasoline direct injection engines. IC Role / Device Role / Timing Role: Provides stable 2.5V reference for 16-bit SAR ADC sampling crankshaft position and combustion pressure signals. Use Value: 10ppm/°C drift and 50ppm hysteresis ensure <±0.01% measurement repeatability across –40°C cold start to 125°C under-hood operation. |
Use Scenario: Precision reference in 4–20mA loop-powered temperature transmitter deployed in oil refinery process lines. IC Role / Device Role / Timing Role: Supplies excitation and ADC reference for RTD bridge circuit operating continuously at 110°C ambient. Use Value: –55°C to 125°C rating and 60ppm/√kHr long-term drift eliminate recalibration needs over 15-year service life. |
| Medical Patient Monitor Analog Front-End | Portable High-Resolution Data Logger |
|
Use Scenario: Reference for ECG/EEG analog signal chain in battery-powered bedside monitor requiring FDA Class II compliance. IC Role / Device Role / Timing Role: Low-noise 2.5V source for 24-bit delta-sigma ADC digitizing microvolt-level bio-potentials. Use Value: 1.6ppmP-P noise and ±0.05% accuracy directly enable <1µV input-referred noise floor and <±0.5% total system gain error. |
Use Scenario: Reference in handheld environmental logger measuring air quality (NO₂, CO) via electrochemical sensors. IC Role / Device Role / Timing Role: Stable excitation and ADC reference for low-power, battery-operated 18-bit successive approximation converter. Use Value: 100mV dropout and 350µA supply current extend battery life >12 months while maintaining 0.01% measurement fidelity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF5025QPWRQ1 | 2.5V, ±0.05%, 3ppm/°C max, 0.8ppmP-P noise, SOIC-8, AEC-Q100 Grade 0 (–40°C to 150°C) | Lower drift and noise, but larger SOIC-8 footprint and higher 950µA quiescent current | Preferred when ultra-low drift dominates over board space and power; not drop-in due to package and pinout mismatch. |
| ADR4525BKSZ-R2 | 2.5V, ±0.02%, 2ppm/°C max, 1.2ppmP-P noise, SOT-23-6, –40°C to 125°C | Higher initial accuracy and lower drift, but rated only to –40°C and lacks MP-grade hysteresis spec | Valid for industrial control where extended low-temp operation is unnecessary; requires validation for automotive thermal cycling. |
Compared with REF5025QPWRQ1 and ADR4525BKSZ-R2, the LT6654AMPS6-2.5#TRM uniquely balances MP-grade temperature coverage, low noise, and compact SOT-23 packaging - making it optimal for space-constrained, high-reliability applications requiring validated –55°C startup and long-term stability without SOIC-8 layout overhead.
Availability
LT6654AMPS6-2.5#TRM is available at Aetrix Electronics and suitable for automotive engine control units, high-temperature industrial transmitters, and portable medical data acquisition systems requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for LT6654AMPS6-2.5#TRM 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 product line delivers precision voltage references engineered for extreme environments - emphasizing low drift, low noise, wide supply tolerance, and extended temperature reliability in safety-critical and long-lifecycle applications.
FAQ
What is the maximum input voltage for LT6654AMPS6-2.5#TRM?
The LT6654AMPS6-2.5#TRM supports an absolute maximum input voltage of 38V, with continuous operation specified up to 36V. Operation above 30V requires an RC input filter (e.g., 10Ω + 1µF) to suppress transients during output short-circuit events, per Analog Devices' Applications Information section.
Does LT6654AMPS6-2.5#TRM support sinking current, and how much?
Yes, the LT6654AMPS6-2.5#TRM sinks up to –10mA while maintaining output accuracy within spec. Its bidirectional output stage enables use as a negative reference in dual-supply circuits, with sink load regulation specified at 30ppm/mA max over the full temperature range.
Is LT6654AMPS6-2.5#TRM qualified for automotive applications?
While the LT6654AMPS6-2.5#TRM itself is not AEC-Q100 certified, it belongs to the LT6654 family whose automotive-grade variants (e.g., LT6654AHS6-2.5#WTRMPBF) are explicitly qualified. The AMPS6 variant shares identical die and MP-grade temperature rating (–55°C to 125°C), but users requiring formal AEC-Q100 compliance must select the #W-suffixed automotive part numbers.
What output capacitor is required for stable operation of LT6654AMPS6-2.5#TRM?
A minimum 1µF ceramic capacitor is required between VOUT (Pins 5 & 6) and GND for stable operation and optimal transient response. Larger values (e.g., 10µF) further improve PSRR and load step recovery but increase turn-on time; 0.1µF input bypass on VIN is also mandatory.
How does thermal hysteresis affect LT6654AMPS6-2.5#TRM in field applications?
Thermal hysteresis for LT6654AMPS6-2.5#TRM is 50ppm over –55°C ↔ 125°C cycling. This means repeated thermal excursions may cause up to ±25ppm (±0.0625mV) reversible offset shift - critical for metrology-grade instruments where calibration traceability must account for thermal history, not just instantaneous temperature.
LT6654AMPS6-2.5#TRM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- -
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- -
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Current - Output:
- -
- Tolerance:
- -
- Temperature Coefficient:
- -
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
LT6654AMPS6-2.5#TRM FAQ
1.How can I place an order for LT6654AMPS6-2.5#TRM through Aetrix?
Please submit a Request for Quotation (RFQ) for LT6654AMPS6-2.5#TRM 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 LT6654AMPS6-2.5#TRM reliable?
The price and inventory of LT6654AMPS6-2.5#TRM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT6654AMPS6-2.5#TRM is usually 5 days.
3.What payment methods are accepted for LT6654AMPS6-2.5#TRM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT6654AMPS6-2.5#TRM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT6654AMPS6-2.5#TRM?
LT6654AMPS6-2.5#TRM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT6654AMPS6-2.5#TRM 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 LT6654AMPS6-2.5#TRM?
For technical support, including LT6654AMPS6-2.5#TRM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT6654AMPS6-2.5#TRM requirements.
6.How does Aetrix verify that LT6654AMPS6-2.5#TRM is sourced from the original manufacturer or authorized distributors?
All LT6654AMPS6-2.5#TRM 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 LT6654AMPS6-2.5#TRM meets industry standards.
7.What is the process for return or replacement of LT6654AMPS6-2.5#TRM?
All LT6654AMPS6-2.5#TRM units undergo pre-shipment inspection (PSI). If there is an issue with LT6654AMPS6-2.5#TRM, 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 LT6654AMPS6-2.5#TRM part is unused and in its original packaging.
Return procedure for LT6654AMPS6-2.5#TRM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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