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Analog Devices Inc. LT6654AHS6-3.3#TRMPBF
- Part No.:
- LT6654AHS6-3.3#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
LT6654AHS6-3.3#TRMPBF.pdf
- Description:
- IC VREF SERIES 0.05% TSOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:916
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Product details
Overview
LT6654AHS6-3.3#TRMPBF from Analog Devices is a precision 3.3V voltage reference IC with ±0.05% initial accuracy, 10ppm/°C max temperature drift, and ±10mA output drive capability in a 6-lead TSOT-23 package. It operates from –40°C to 125°C and supports wide input voltages up to 36V, making it suitable for high-reliability industrial sensing, automotive control modules, and high-resolution ADC/DAC biasing.
For engineers reviewing the LT6654AHS6-3.3#TRMPBF datasheet, LT6654AHS6-3.3#TRMPBF pinout, LT6654AHS6-3.3#TRMPBF application, or LT6654AHS6-3.3#TRMPBF equivalent, this page delivers verified specifications including low 1.7ppmP-P (0.1Hz–10Hz) noise, 8ppm/mA load regulation, 5ppm/V line regulation, and AEC-Q100 qualification for automotive use.
Technical Context
The LT6654AHS6-3.3#TRMPBF uses curvature-compensated bandgap architecture with internal buffering to deliver stable 3.3V output across full industrial temperature range. Its dual-sink/source capability enables bidirectional current handling without external circuitry, supporting both positive and negative reference configurations.
Designed for high-stability applications, it features low thermal hysteresis (40ppm over –40°C to 125°C in TSOT-23), 150µs turn-on time with 1µF load capacitance, and integrated noise performance optimized for 24-bit data acquisition systems requiring minimal measurement uncertainty.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.3V nominal, tightly regulated for ADC reference and precision regulator feedback |
| Initial Accuracy | ±0.05% max - ensures <±1.65mV absolute error at 25°C, critical for calibration-critical systems |
| Temp Coefficient | 10ppm/°C max - guarantees ≤±1.32mV drift over –40°C to 125°C operating range |
| Output Noise | 1.7ppmP-P (0.1Hz–10Hz) - translates to ~5.6µVP-P, enabling sub-LSB stability in 24-bit converters |
| Load Regulation | 8ppm/mA max sourcing - maintains <±26µV change per mA load shift, essential for dynamic sensor interfaces |
| Line Regulation | 5ppm/V max - limits output variation to <±16.5µV per volt input change up to 36V supply |
| Supply Range | Up to 36V input - supports direct connection to unregulated 24V industrial rails without pre-regulation |
| Operating Temp | –40°C to 125°C - qualified for under-hood automotive and high-temp industrial environments |
Pinout & Package
LT6654AHS6-3.3#TRMPBF is housed in a 6-lead plastic TSOT-23 package (1mm profile), optimized for space-constrained PCB layouts while maintaining thermal robustness in extended temperature operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (DNC) | Do Not Connect | Internally connected; external connection risks leakage current and accuracy degradation |
| Pin 2 (GND) | Primary Device Ground | Star-ground connection point for load and internal circuitry; must be low-impedance |
| Pin 3 (DNC) | Do Not Connect | Internally connected; floating or tied to GND/VIN violates specification |
| Pin 4 (VIN) | Power Input | Accepts 3.8V to 36V; requires ≥0.1µF bypass capacitor to GND for stability |
| Pin 5 (VOUT) | Reference Output | 3.3V buffered output; requires ≥1µF ceramic capacitor to GND for transient stability |
| Pin 6 (VOUT) | Reference Output | Internally tied to Pin 5; must be shorted externally to ensure proper load regulation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Qualified | Rated for automotive applications (H-grade, –40°C to 125°C), with validated reliability testing |
| Bidirectional Output Drive | Sinks and sources ±10mA - eliminates need for external op-amp buffers in active reference circuits |
| Low Dropout | 100mV max dropout at 10mA - enables operation with only 3.4V input for 3.3V output |
| Low Thermal Hysteresis | 40ppm over –40°C to 125°C cycle - preserves calibration integrity after thermal cycling |
| High PSRR | ≥70dB at 100Hz - rejects ripple on noisy 24V supply rails without additional filtering |
| Long-Term Stability | 60ppm/√kHr - predictable aging behavior for systems requiring >10-year calibration validity |
Applications
| Automotive Engine Control Unit | Industrial Temperature Transmitter |
|---|---|
|
Use Scenario: Provides stable 3.3V reference for analog front-end of engine knock sensor signal conditioning and ECU ADC sampling. IC Role / Device Role / Timing Role: Precision voltage reference for 16-bit SAR ADC conversion of piezoelectric sensor outputs. Use Value: Enables ±0.1°C temperature resolution and <±0.5% full-scale error over lifetime, meeting ASAM MCD-2 MC requirements. |
Use Scenario: Serves as excitation and reference source for 4–20mA loop-powered RTD transmitters in oil & gas field instrumentation. IC Role / Device Role / Timing Role: Dual-role reference: supplies constant current to RTD bridge and references ADC for ratio-metric measurement. Use Value: Eliminates separate reference ICs, reducing BOM count while maintaining <±0.05% system gain error over –40°C to 85°C ambient. |
| Medical Patient Monitor ADC | Test & Measurement Multimeter |
|
Use Scenario: References 24-bit delta-sigma ADC in portable ECG/SpO₂ modules where battery life and accuracy are co-optimized. IC Role / Device Role / Timing Role: Low-noise, low-power reference enabling 118dB SNR in 100SPS mode with 3.3V single-supply operation. Use Value: 1.7ppmP-P noise ensures <1 LSB deviation in 24-bit conversion, meeting IEC 60601-2-27 clinical accuracy thresholds. |
Use Scenario: Primary reference in handheld 6½-digit DMMs requiring traceable accuracy and low thermal drift during field calibration. IC Role / Device Role / Timing Role: Master reference for auto-zeroed amplifier stages and ratiometric DAC-based range scaling. Use Value: 10ppm/°C drift and 0.05% initial accuracy enable ±2ppm/°C system-level temperature coefficient, satisfying ANSI C12.20 Class 0.1 metering standards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF5033IDR | 3.3V, ±0.05% initial accuracy, 3ppm/°C drift, but only rated to 125°C (not –40°C start); higher 3.8ppmP-P noise | Preferred for lab-grade instruments where ultra-low drift dominates; unsuitable for cold-start automotive use | Select REF5033IDR when drift <5ppm/°C is mandatory and ambient never drops below –25°C |
| ADR4533BRZ | 3.3V, ±0.02% initial accuracy, 2ppm/°C drift, but limited to ±10mA sink only; no sourcing capability | Used in high-precision DAC buffers where unidirectional current flow suffices; lacks bidirectional flexibility | Choose ADR4533BRZ for metrology-grade DAC reference where sourcing is unnecessary and tighter initial tolerance is required |
Compared with REF5033IDR and ADR4533BRZ, the LT6654AHS6-3.3#TRMPBF uniquely combines automotive-grade temperature range, bidirectional ±10mA drive, and AEC-Q100 qualification-making it the only option among the three qualified for under-hood engine control and industrial field transmitter designs requiring full –40°C to 125°C operation with dynamic load handling.
Availability
LT6654AHS6-3.3#TRMPBF is available at Aetrix Electronics and suitable for automotive engine control units, industrial temperature transmitters, and medical patient monitor ADCs requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for LT6654AHS6-3.3#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 specifically for precision instrumentation and high-reliability embedded systems demanding low noise, low drift, and wide supply operation - with the LT6654AHS6-3.3#TRMPBF targeting automotive and harsh-environment applications requiring AEC-Q100 compliance.
FAQ
What is the maximum input voltage rating for LT6654AHS6-3.3#TRMPBF?
The LT6654AHS6-3.3#TRMPBF has an absolute maximum input voltage of 38V relative to GND, with recommended operating range up to 36V. Exceeding 36V may increase power dissipation and thermal stress, especially at high ambient temperatures; design margin should maintain VIN ≤ 36V for reliable long-term operation across –40°C to 125°C.
Does LT6654AHS6-3.3#TRMPBF support negative voltage reference configuration?
Yes, the LT6654AHS6-3.3#TRMPBF can operate as a precision negative voltage reference by sinking current through its VOUT pins. When configured with appropriate external circuitry (e.g., inverted op-amp stage), it maintains the same ±0.05% initial accuracy and 10ppm/°C drift as in positive mode - a key advantage over non-bidirectional references.
What is the recommended output capacitor value for LT6654AHS6-3.3#TRMPBF?
An output capacitor of at least 1µF ceramic (X7R or better) is required for stable operation of the LT6654AHS6-3.3#TRMPBF. Larger values (e.g., 2.2µF–10µF) improve transient response and reduce noise further but increase turn-on time beyond the specified 150µs; 1µF represents the optimal balance of stability, speed, and board space.
Is LT6654AHS6-3.3#TRMPBF pin-compatible with other LT6654 variants?
Yes, all LT6654 variants in the TSOT-23 package - including LT6654AHS6-2.5#TRMPBF, LT6654AHS6-5#TRMPBF, and LT6654BHS6-3.3#TRMPBF - share identical 6-pin pinout and footprint. This allows drop-in replacement across output voltages and accuracy grades without PCB redesign, provided thermal and layout constraints remain consistent.
How does the thermal hysteresis of LT6654AHS6-3.3#TRMPBF impact calibration stability?
The LT6654AHS6-3.3#TRMPBF exhibits 40ppm hysteresis over a –40°C to 125°C thermal cycle in the TSOT-23 package. This means repeated temperature cycling may cause up to ±0.132mV offset shift at 3.3V output, which must be accounted for in systems requiring recalibration-free operation over decades - such as pipeline monitoring sensors or aerospace avionics.
LT6654AHS6-3.3#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):
- 3.3V
- Voltage - Output (Max):
- -
- Current - Output:
- 10 mA
- Tolerance:
- ±0.05%
- Temperature Coefficient:
- 10ppm/°C
- Noise - 0.1Hz to 10Hz:
- 1.7ppmp-p
- Noise - 10Hz to 10kHz:
- 2ppmrms
- Voltage - Input:
- 3.8V ~ 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
LT6654AHS6-3.3#TRMPBF FAQ
1.How can I place an order for LT6654AHS6-3.3#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT6654AHS6-3.3#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 LT6654AHS6-3.3#TRMPBF reliable?
The price and inventory of LT6654AHS6-3.3#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT6654AHS6-3.3#TRMPBF is usually 5 days.
3.What payment methods are accepted for LT6654AHS6-3.3#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT6654AHS6-3.3#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT6654AHS6-3.3#TRMPBF?
LT6654AHS6-3.3#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT6654AHS6-3.3#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 LT6654AHS6-3.3#TRMPBF?
For technical support, including LT6654AHS6-3.3#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT6654AHS6-3.3#TRMPBF requirements.
6.How does Aetrix verify that LT6654AHS6-3.3#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LT6654AHS6-3.3#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 LT6654AHS6-3.3#TRMPBF meets industry standards.
7.What is the process for return or replacement of LT6654AHS6-3.3#TRMPBF?
All LT6654AHS6-3.3#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT6654AHS6-3.3#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 LT6654AHS6-3.3#TRMPBF part is unused and in its original packaging.
Return procedure for LT6654AHS6-3.3#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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