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Analog Devices Inc. LT6654AHS6-2.5#TRMPBF
- Part No.:
- LT6654AHS6-2.5#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
LT6654AHS6-2.5#TRMPBF.pdf
- Description:
- IC VREF SERIES 0.05% TSOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,345
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Product details
Overview
LT6654AHS6-2.5#TRMPBF from Analog Devices is a precision 2.5V voltage reference IC with ±0.05% initial accuracy, 10ppm/°C max temperature drift, and 1.6ppmP-P (0.1Hz–10Hz) low-noise output. It delivers ±10mA output drive in a 6-lead TSOT-23 package, operating from –40°C to 125°C supply range up to 36V. It is used in high-resolution data acquisition systems requiring stable excitation for precision ADCs.
For engineers reviewing the LT6654AHS6-2.5#TRMPBF datasheet, LT6654AHS6-2.5#TRMPBF pinout, LT6654AHS6-2.5#TRMPBF application, or LT6654AHS6-2.5#TRMPBF equivalent, key selection criteria include guaranteed A-grade accuracy over extended temperature, low dropout (100mV max), load regulation ≤8ppm/mA, and compatibility with 1µF output capacitance for stability in portable and automotive sensor interfaces.
Technical Context
The LT6654AHS6-2.5#TRMPBF employs curvature-compensated bandgap architecture with internal buffer to achieve low thermal hysteresis (40ppm over –40°C to 125°C in TSOT-23) and precise load regulation. Its dual-sourcing/sinking capability enables bidirectional current handling without external components.
It features low line regulation (5ppm/V max), 350µA typical supply current, and 150µs turn-on time with 1µF load capacitor - optimized for fast-settling, low-drift applications in industrial control loops and automotive engine management sensors where long-term stability (60ppm/√kHr) is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.5V ±0.05% (±1.25mV absolute error at 25°C) |
| Temp Coefficient | 10ppm/°C max (±1.25mV total drift over –40°C to 125°C) |
| Output Noise | 1.6ppmP-P (0.1Hz–10Hz), enabling <18-bit effective resolution in 24-bit ADC systems |
| Load Regulation | 8ppm/mA max sourcing (±80ppm error over ±10mA load swing) |
| Dropout Voltage | 100mV max at 10mA source (supports operation with VIN as low as 2.6V) |
| Supply Range | 2.6V to 36V (enables direct use from unregulated 3.3V, 5V, 12V, or 24V rails) |
| Operating Temp | –40°C to 125°C (H-grade qualification for under-hood automotive use) |
Pinout & Package
LT6654AHS6-2.5#TRMPBF uses a 6-lead Plastic TSOT-23 package (1mm height), RoHS-compliant and halogen-free, with thermal resistance θJA = 192°C/W.
| 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 path to system ground |
| VIN (Pin 4) | Power Supply Input | Accepts 2.6V–36V; requires ≥0.1µF bypass capacitor to GND for noise immunity |
| VOUT (Pin 6) | Reference Output | 2.5V buffered output; requires ≥1µF ceramic capacitor to GND for stability and low-noise performance |
| DNC (Pin 1) | Do Not Connect | Internally connected; external connection risks leakage current and accuracy degradation |
| NC (Pin 3) | No Internal Connection | May be left floating or tied to GND/VIN/VOUT; no functional impact |
| DNC (Pin 5) | Do Not Connect | Internally connected; must remain unconnected per datasheet to avoid parametric shift |
Key Features
| Feature | Design Value |
|---|---|
| High Accuracy Grade | A-grade ±0.05% initial tolerance enables single-point calibration in factory test without trimming |
| Extended Temperature Range | –40°C to 125°C operation supports placement near hot ECU components in automotive powertrain modules |
| Bidirectional Output Drive | ±10mA sourcing/sinking eliminates need for external op-amp buffers in ratiometric sensor excitation circuits |
| Low Long-Term Drift | 60ppm/√kHr ensures <100ppm total drift after 10,000 hours - critical for medical device lifetime validation |
| Low Dropout Operation | 100mV dropout at full 10mA load allows use with low-headroom supplies like LiFePO4 battery stacks (2.8V–3.6V) |
Applications
| Automotive Engine Control Unit | Industrial Pressure Transmitter |
|---|---|
Use Scenario: Reference for 24-bit sigma-delta ADC measuring cylinder pressure in diesel common-rail injection systems. IC Role / Device Role / Timing Role: Precision 2.5V excitation and ADC reference, rejecting supply ripple and thermal gradients across wide ambient range. Use Value: 10ppm/°C drift and 1.6ppmP-P noise ensure <±0.02% full-scale measurement error over –40°C to 125°C without recalibration. | Use Scenario: Bridge excitation and ADC reference in 4–20mA loop-powered pressure transmitters deployed in oil & gas refineries. IC Role / Device Role / Timing Role: Dual-role reference providing stable bridge bias and conversion reference under varying loop supply (12–42V). Use Value: 36V max input and 100mV dropout enable direct connection to loop supply; ±10mA drive powers Wheatstone bridge without external amplifier. |
| Portable Medical Glucose Meter | Test & Measurement Calibration Source |
Use Scenario: Reference for analog front-end in handheld glucose meters using electrochemical biosensors. IC Role / Device Role / Timing Role: Low-noise, low-power 2.5V reference powering sensor bias and ADC during battery-operated 10-second measurement cycles. Use Value: 350µA supply current and 1.6ppmP-P noise support >16-bit ENOB while extending CR2032 battery life beyond 500 tests. | Use Scenario: Primary reference in benchtop multimeters and automated calibration systems requiring traceable 2.5V standards. IC Role / Device Role / Timing Role: High-stability, low-hysteresis reference replacing bulkier buried-zener modules in metrology-grade equipment. Use Value: 40ppm thermal hysteresis (–40°C ↔ 125°C) and 60ppm/√kHr long-term drift meet ANSI/NCSL Z540-1 calibration uncertainty budgets. |
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%, 3ppm/°C max, SOIC-8, 1.2mA supply current | Lower drift but higher quiescent current and larger footprint; not qualified for 125°C operation | Preferred when ultra-low drift (<3ppm/°C) is prioritized over power and temperature range |
| ADR4525BRZ | 2.5V, ±0.02%, 2ppm/°C max, SOIC-8, 950µA supply current, AEC-Q100 Grade 1 | Higher initial accuracy and lower drift, but only rated to 125°C junction (not ambient), and no sink capability | Selected for highest-accuracy lab instrumentation where sink current and extended ambient range are not required |
Compared with REF5025IDR and ADR4525BRZ, the LT6654AHS6-2.5#TRMPBF offers unique bidirectional ±10mA drive, 125°C ambient rating, and 350µA supply current - making it optimal for space-constrained, high-temp, low-power sensor nodes where bufferless excitation and ADC referencing are needed in one device.
Availability
LT6654AHS6-2.5#TRMPBF is available at Aetrix Electronics and suitable for automotive engine control units, industrial pressure transmitters, portable medical diagnostics, and calibration equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LT6654AHS6-2.5#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 semiconductor leader specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision measurement and control.
The LT6654 family was designed for applications demanding ultra-stable voltage references in harsh environments - including automotive, industrial sensing, and medical instrumentation - where low noise, low drift, and wide supply range are non-negotiable.
FAQ
What is the maximum input voltage for LT6654AHS6-2.5#TRMPBF?
The LT6654AHS6-2.5#TRMPBF supports an absolute maximum input voltage of 38V, with continuous operation specified up to 36V. Its wide supply range enables direct use from 12V, 24V, or 36V industrial rails without external regulators - critical for robustness in automotive and factory automation systems where supply transients occur.
Does LT6654AHS6-2.5#TRMPBF support sinking current?
Yes, the LT6654AHS6-2.5#TRMPBF can sink up to 10mA while maintaining its 2.5V output accuracy and low noise. This bidirectional capability allows it to serve as both a positive reference and a precision negative reference in configurations such as current-sink DAC buffers or bipolar sensor interfaces - eliminating the need for additional op-amps in compact designs.
What output capacitor value is required for stable operation of LT6654AHS6-2.5#TRMPBF?
The LT6654AHS6-2.5#TRMPBF requires a minimum 1µF ceramic output capacitor connected directly between VOUT and GND for stability, low noise, and optimal transient response. Larger values (e.g., 2.2µF–10µF) further reduce noise and improve load step recovery but increase turn-on time; 1µF represents the design optimum balancing speed, stability, and board area.
Is LT6654AHS6-2.5#TRMPBF qualified for automotive applications?
Yes, the LT6654AHS6-2.5#TRMPBF carries H-grade temperature qualification (–40°C to 125°C) and is explicitly listed in Analog Devices' automotive product documentation. While not marked with a #W suffix (which denotes controlled manufacturing for AEC-Q100 Grade 0), its H-grade rating and tested reliability make it suitable for under-hood and cabin applications including engine control, battery monitoring, and ADAS sensor interfaces.
How does the long-term drift of LT6654AHS6-2.5#TRMPBF compare to competing references?
The LT6654AHS6-2.5#TRMPBF exhibits 60ppm/√kHr long-term drift in the TSOT-23 package - verified per Analog Devices' characterization data. This is competitive with premium references like REF5025 (65ppm/√kHr) and superior to standard bandgap references (>100ppm/√kHr), ensuring minimal calibration drift over 5+ years in field-deployed instrumentation and medical devices.
LT6654AHS6-2.5#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:
- ±0.05%
- Temperature Coefficient:
- 10ppm/°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
LT6654AHS6-2.5#TRMPBF FAQ
1.How can I place an order for LT6654AHS6-2.5#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT6654AHS6-2.5#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 LT6654AHS6-2.5#TRMPBF reliable?
The price and inventory of LT6654AHS6-2.5#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT6654AHS6-2.5#TRMPBF is usually 5 days.
3.What payment methods are accepted for LT6654AHS6-2.5#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT6654AHS6-2.5#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT6654AHS6-2.5#TRMPBF?
LT6654AHS6-2.5#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT6654AHS6-2.5#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 LT6654AHS6-2.5#TRMPBF?
For technical support, including LT6654AHS6-2.5#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT6654AHS6-2.5#TRMPBF requirements.
6.How does Aetrix verify that LT6654AHS6-2.5#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LT6654AHS6-2.5#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 LT6654AHS6-2.5#TRMPBF meets industry standards.
7.What is the process for return or replacement of LT6654AHS6-2.5#TRMPBF?
All LT6654AHS6-2.5#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT6654AHS6-2.5#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 LT6654AHS6-2.5#TRMPBF part is unused and in its original packaging.
Return procedure for LT6654AHS6-2.5#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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