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Analog Devices Inc. LT6654AIS6-2.5#TRMPBF
- Part No.:
- LT6654AIS6-2.5#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
LT6654AIS6-2.5#TRMPBF.pdf
- Description:
- IC VREF SERIES 0.05% TSOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,239
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Product details
Overview
LT6654AIS6-2.5#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, operates from 2.6V to 36V input, and is fully specified over –40°C to +85°C for industrial sensing and high-resolution data acquisition systems.
For engineers reviewing the LT6654AIS6-2.5#TRMPBF datasheet, LT6654AIS6-2.5#TRMPBF pinout, LT6654AIS6-2.5#TRMPBF application, or LT6654AIS6-2.5#TRMPBF equivalent, this page provides verified specifications, SOT-23-6 package details, load regulation performance, thermal hysteresis data, and automotive-grade alternative options aligned with AEC-Q100 requirements.
Technical Context
The LT6654AIS6-2.5#TRMPBF integrates a curvature-compensated bandgap core with a buffered output stage, enabling precise sourcing and sinking of ±10mA while maintaining low output impedance and tight load regulation (≤8ppm/mA). Its architecture supports operation as both positive and negative voltage references due to bidirectional current capability.
Designed for wide-supply applications up to 36V, it features low dropout (100mV max at 10mA), 5ppm/V line regulation, and 150µs turn-on time with 1µF load capacitance. The device uses internal DNC pins and dual VOUT terminals to optimize stability and minimize ground path errors in precision measurement circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.500V ±0.05% (±1.25mV absolute tolerance at 25°C) |
| Temp Coefficient | 10ppm/°C max (±0.25mV drift over –40°C to +85°C) |
| Output Noise | 1.6ppmP-P (0.1Hz–10Hz), equivalent to 4nVP-P at 2.5V |
| Load Regulation | 8ppm/mA max (±0.02mV change per mA load shift) |
| Line Regulation | 5ppm/V max (±0.0125mV change per volt input variation) |
| Supply Range | 2.6V to 36V (VIN ≥ VOUT + 0.1V ensures regulation) |
| Operating Temp | –40°C to +85°C (I-grade, qualified for industrial environments) |
Pinout & Package
LT6654AIS6-2.5#TRMPBF is housed in a 6-lead Plastic TSOT-23 (S6) package, 1mm profile, RoHS-compliant and lead-free. Pin 1 and Pin 5 are DNC (Do Not Connect); Pin 2 is NC (Not Connected); Pins 3 and 4 are GND (star-ground connection required); Pin 6 is VOUT.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (DNC) | Internally connected, no external connection | Leakage current must be minimized; floating or tying to GND/VIN risks performance degradation |
| Pin 2 (NC) | Not internally connected | May be left floating, tied to GND, VIN, or VOUT without functional impact |
| Pin 3 (GND) | Internal function ground | Must be connected to system GND near Pin 4 to minimize ground loop error |
| Pin 4 (GND) | Primary device ground | Star-point for load ground and Pin 3; critical for load regulation accuracy |
| Pin 5 (VOUT) | Main output terminal | Requires ≥1µF output capacitor; connects to load and feedback paths |
| Pin 6 (VOUT) | Secondary output terminal | Tied directly to Pin 5 to ensure matched load regulation and reduce trace resistance effects |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional output drive | ±10mA sourcing/sinking enables use as positive or negative reference without external circuitry |
| Low thermal hysteresis | 30ppm max over –40°C to +85°C cycle (S6 package), ensuring repeatability after temperature excursions |
| Wide input range support | Operates down to 2.6V input (VOUT + 0.1V), eliminating need for pre-regulation in battery-powered systems |
| Stable with ceramic capacitors | Guaranteed stability with ≥1µF X7R/X5R output cap and ≥0.1µF input bypass-no ESR requirements |
| High PSRR | –70dB at 100Hz, reducing sensitivity to supply ripple in noisy industrial power rails |
Applications
| Automotive Sensor Signal Conditioning | Industrial PLC Analog Input Modules |
|---|---|
|
Use Scenario: High-accuracy temperature and pressure sensor front-ends in engine control units requiring stable excitation and ADC reference under wide ambient temperature swings. IC Role / Device Role / Timing Role: Precision 2.5V reference for ratiometric sensor excitation and SAR ADC conversion reference. Use Value: 10ppm/°C drift and 1.6ppmP-P noise ensure ≤16-bit effective resolution across –40°C to +125°C junction range. |
Use Scenario: Modular analog input cards in programmable logic controllers measuring 4–20mA, thermocouple, and RTD signals in factory automation cabinets. IC Role / Device Role / Timing Role: Primary reference for multi-channel 24-bit ΣΔ ADCs and precision DACs in isolated signal chains. Use Value: ±10mA drive supports multiple parallel ADC references; low hysteresis prevents calibration drift during daily thermal cycling. |
| Portable Medical Instrumentation | Test & Measurement Calibration Sources |
|
Use Scenario: Battery-powered handheld blood glucose meters and portable ECG monitors requiring ultra-low-noise, low-power reference for analog front-end amplifiers and ADCs. IC Role / Device Role / Timing Role: Low-noise 2.5V reference powering instrumentation amplifiers and 16-bit successive-approximation ADCs. Use Value: 350µA typical supply current extends battery life; 1.6ppmP-P noise enables sub-μV-level signal integrity in microvolt-range biosignal acquisition. |
Use Scenario: Benchtop multimeters and automated test equipment calibrators needing long-term stability and low thermal coefficient for DC voltage standards. IC Role / Device Role / Timing Role: Stable 2.5V reference source for self-calibration routines and metrology-grade voltage outputs. Use Value: 60ppm/√kHr long-term drift and 30ppm hysteresis enable <10ppm/year calibration interval extension in Class I lab equipment. |
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, 1.2ppmP-P noise, SOIC-8, 1.2mA supply current | Lower drift/noise but higher quiescent current and larger package; not rated for >85°C ambient | Select for lab-grade metrology where ultra-low drift outweighs power and size constraints |
| ADR4525BRZ | 2.5V, 0.02% initial accuracy, 2ppm/°C drift, 1.75ppmP-P noise, SOIC-8, 950µA supply current, AEC-Q100 Grade 1 | Higher accuracy and lower drift, but requires ≥10µF output cap and has slower 300µs turn-on time | Select when AEC-Q100 Grade 1 compliance and <2ppm/°C drift are mandatory, and layout allows larger output capacitance |
Compared with REF5025IDR and ADR4525BRZ, the LT6654AIS6-2.5#TRMPBF offers superior thermal hysteresis control (30ppm vs. 50–75ppm), smaller SOT-23 footprint, and bidirectional drive-making it optimal for space-constrained, thermally cycled industrial and automotive modules where ±10mA sourcing/sinking simplifies biasing of transducer bridges and op-amp inputs.
Availability
LT6654AIS6-2.5#TRMPBF is available at Aetrix Electronics and suitable for industrial PLC analog input modules, automotive sensor signal conditioning, and portable medical instrumentation requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for LT6654AIS6-2.5#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 since 1965.
The LT6654 family was designed for precision instrumentation and high-reliability embedded systems, emphasizing low noise, wide supply operation, and robust thermal performance in compact packages like TSOT-23 and LS8.
FAQ
What is the maximum input voltage rating for LT6654AIS6-2.5#TRMPBF?
The absolute maximum input voltage for LT6654AIS6-2.5#TRMPBF is 38V relative to GND. However, the recommended operating range is 2.6V to 36V. Exceeding 36V may trigger internal protection mechanisms or degrade long-term reliability, especially at elevated temperatures. Always use a 0.1µF input bypass capacitor to suppress transients.
Can LT6654AIS6-2.5#TRMPBF sink current, and how does that affect its use as a negative reference?
Yes, LT6654AIS6-2.5#TRMPBF can sink up to –10mA, enabling direct use as a precision negative reference by connecting VOUT to system ground and GND to a negative rail. This configuration maintains the same 10ppm/°C drift and 0.05% accuracy as the positive mode, eliminating need for external inversion circuitry in bipolar signal chains.
What output capacitor value is required for stable operation of LT6654AIS6-2.5#TRMPBF?
LT6654AIS6-2.5#TRMPBF requires a minimum 1µF ceramic (X7R or X5R) output capacitor connected between VOUT and GND for guaranteed stability across all loads and temperatures. Larger values (e.g., 10µF) further reduce noise and improve transient response but increase turn-on time beyond the specified 150µs.
How does the dual-VOUT pin configuration (Pins 5 and 6) improve performance in LT6654AIS6-2.5#TRMPBF?
Pins 5 and 6 are both VOUT terminals and must be tied together externally. This dual-pin design reduces effective output trace resistance and inductance, minimizing voltage drop and phase shift under dynamic load conditions. It improves load regulation accuracy (≤8ppm/mA) and enhances stability when driving remote ADC reference inputs or multiple parallel loads.
Is LT6654AIS6-2.5#TRMPBF qualified for automotive applications?
No-LT6654AIS6-2.5#TRMPBF is an I-grade part rated for –40°C to +85°C and is not AEC-Q100 qualified. For automotive use, select the automotive-grade variant LT6654AHS6-2.5#WTRMPBF (H-grade, –40°C to +125°C, AEC-Q100 qualified), which shares identical electrical specs but undergoes controlled manufacturing and additional reliability testing.
LT6654AIS6-2.5#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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-6
LT6654AIS6-2.5#TRMPBF FAQ
1.How can I place an order for LT6654AIS6-2.5#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT6654AIS6-2.5#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 LT6654AIS6-2.5#TRMPBF reliable?
The price and inventory of LT6654AIS6-2.5#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT6654AIS6-2.5#TRMPBF is usually 5 days.
3.What payment methods are accepted for LT6654AIS6-2.5#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT6654AIS6-2.5#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT6654AIS6-2.5#TRMPBF?
LT6654AIS6-2.5#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT6654AIS6-2.5#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 LT6654AIS6-2.5#TRMPBF?
For technical support, including LT6654AIS6-2.5#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT6654AIS6-2.5#TRMPBF requirements.
6.How does Aetrix verify that LT6654AIS6-2.5#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LT6654AIS6-2.5#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 LT6654AIS6-2.5#TRMPBF meets industry standards.
7.What is the process for return or replacement of LT6654AIS6-2.5#TRMPBF?
All LT6654AIS6-2.5#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT6654AIS6-2.5#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 LT6654AIS6-2.5#TRMPBF part is unused and in its original packaging.
Return procedure for LT6654AIS6-2.5#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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