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Analog Devices Inc. LT6654AHS6-3.3#TRPBF
- Part No.:
- LT6654AHS6-3.3#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
LT6654AHS6-3.3#TRPBF.pdf
- Description:
- IC VREF SERIES 0.05% TSOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:4,809
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Product details
Overview
LT6654AHS6-3.3#TRPBF from Analog Devices is a precision 3.3V voltage reference IC with ±0.05% initial accuracy, 10ppm/°C max temperature drift, and 1.7ppmP-P (0.1Hz–10Hz) low-noise output. It delivers ±10mA output drive in a 6-lead TSOT-23 package, operating from 3.8V to 36V input across –40°C to 125°C - ideal for high-resolution ADC biasing in automotive sensor modules.
For engineers reviewing the LT6654AHS6-3.3#TRPBF datasheet, LT6654AHS6-3.3#TRPBF pinout, LT6654AHS6-3.3#TRPBF application, or LT6654AHS6-3.3#TRPBF equivalent, key selection criteria include guaranteed A-grade drift performance over extended temperature range, sink/source capability enabling bipolar reference use, and LS8-package-level stability in TSOT-23 form factor.
Technical Context
The LT6654AHS6-3.3#TRPBF integrates a curvature-compensated bandgap core with a low-output-impedance buffer stage, enabling precise load regulation (≤8ppm/mA sourcing) and bidirectional current handling. Its architecture supports operation as both positive and negative reference via sinking capability.
Designed for harsh environments, it features low thermal hysteresis (40ppm over –40°C to 125°C), 150µs turn-on time with 1µF load capacitance, and 5ppm/V line regulation up to 36V - all fully specified across its H-grade industrial temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.3V nominal, tightly regulated for 12-/16-bit SAR ADC reference inputs |
| Initial Accuracy | ±0.05% max - eliminates need for system-level calibration in precision data acquisition |
| Temp Coefficient | 10ppm/°C max (A-grade) - ensures ≤±0.33% output shift over –40°C to 125°C |
| Output Noise | 1.7ppmP-P (0.1Hz–10Hz) - contributes <1 LSB error in 16-bit 3.3V full-scale systems |
| Supply Range | 3.8V to 36V - supports direct connection to unregulated 5V, 12V, or 24V rails without LDO |
| Output Drive | ±10mA sourcing/sinking - enables driving 100Ω loads or biasing multiple op-amps directly |
| Dropout Voltage | 100mV max at 10mA - allows operation with only 3.4V input for 3.3V output |
Pinout & Package
LT6654AHS6-3.3#TRPBF uses a 6-lead Plastic TSOT-23 (S6) package, 2.9mm × 1.6mm × 1.0mm profile, RoHS-compliant and halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (DNC) | Do Not Connect | Internally connected; external connection risks leakage-induced error |
| Pin 2 (GND) | Primary Device Ground | Star-ground connection point for load and internal circuitry; critical for noise rejection |
| Pin 3 (VIN) | Power Input | Accepts 3.8V–36V; requires ≥0.1µF bypass capacitor to GND for stability |
| Pin 4 (GND) | Internal Function Ground | Must be tied to Pin 2 near PCB ground plane to minimize thermal gradient errors |
| Pin 5 (VOUT) | Reference Output | Main 3.3V 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 |
|---|---|
| Bidirectional Output Drive | ±10mA sourcing/sinking enables use as negative reference in dual-supply circuits |
| Low Thermal Hysteresis | 40ppm over –40°C to 125°C cycle - maintains accuracy after thermal cycling in engine bay sensors |
| Wide Input Range | Operates down to 3.8V input - supports direct battery-sensing applications without pre-regulation |
| AEC-Q100 Qualified | H-grade (–40°C to 125°C) meets automotive reliability requirements for under-hood use |
| Low Long-Term Drift | 60ppm/√kHr - predicts <0.01% output shift over 10-year field deployment |
Applications
| Automotive Engine Control Unit (ECU) | Industrial 4–20mA Transmitter |
|---|---|
|
Use Scenario: Precision analog front-end for cylinder pressure sensing and knock detection. IC Role / Device Role / Timing Role: Provides stable 3.3V reference for 16-bit sigma-delta ADC converting piezoresistive sensor signals. Use Value: 10ppm/°C drift ensures <±0.5°C equivalent error over full engine temperature range, meeting ASAM MCD-2 MC compliance. |
Use Scenario: Two-wire loop-powered transmitter conditioning thermocouple and RTD inputs. IC Role / Device Role / Timing Role: Supplies excitation and reference for instrumentation amplifier and ADC in ultra-low-power mode. Use Value: ±10mA drive supports simultaneous biasing of sensor bridge and ADC reference, eliminating discrete regulators. |
| Portable Medical Glucometer | High-Temperature Data Logger |
|
Use Scenario: Battery-operated handheld device measuring blood glucose via electrochemical strip. IC Role / Device Role / Timing Role: Reference for 12-bit SAR ADC digitizing amperometric current from test strip reaction. Use Value: 1.7ppmP-P noise ensures <0.01% measurement repeatability - critical for FDA Class II device accuracy claims. |
Use Scenario: Ruggedized environmental monitor deployed in oil wellhead or furnace control cabinets. IC Role / Device Role / Timing Role: Primary voltage reference for isolated SPI ADC capturing thermocouple and strain gauge data. Use Value: H-grade temperature rating and 40ppm hysteresis guarantee calibration retention after repeated 125°C exposure cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF5033QPWRQ1 | 3.3V, ±0.05%, 3ppm/°C max, but only rated to 125°C (not –40°C start); higher 3.8µA quiescent current | Automotive infotainment power domain where cold-start not required | Prefer LT6654AHS6-3.3#TRPBF when full –40°C to 125°C operation with low noise is mandatory |
| ADR4533BRZ | 3.3V, ±0.02% initial accuracy, 3ppm/°C, but limited to –40°C to 125°C only in SOIC-8; no sink capability | Lab-grade instrumentation requiring tighter initial tolerance but less thermal cycling stress | Choose LT6654AHS6-3.3#TRPBF for TSOT-23 footprint, bidirectional drive, and proven hysteresis performance |
Compared with REF5033QPWRQ1 and ADR4533BRZ, the LT6654AHS6-3.3#TRPBF uniquely combines A-grade drift, full H-grade temperature range, sink/source flexibility, and industry-leading 1.7ppmP-P noise in a space-constrained 6-lead package - making it optimal for safety-critical automotive and high-reliability industrial sensing.
Availability
LT6654AHS6-3.3#TRPBF is available at Aetrix Electronics and suitable for automotive ECU design, industrial 4–20mA transmitters, and portable medical diagnostics requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LT6654AHS6-3.3#TRPBF 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 engineered for precision metrology-grade voltage references in harsh environments - emphasizing low drift, low noise, wide supply range, and robust thermal performance for mission-critical sensing.
FAQ
What is the maximum input voltage for LT6654AHS6-3.3#TRPBF?
The LT6654AHS6-3.3#TRPBF supports an absolute maximum input voltage of 38V relative to GND, with recommended operating range from 3.8V to 36V. Operation above 36V requires verification of power dissipation and thermal margin per the datasheet's θJA = 192°C/W specification for the TSOT-23 package.
Does LT6654AHS6-3.3#TRPBF support sinking current, and how is it implemented?
Yes, the LT6654AHS6-3.3#TRPBF can sink up to 10mA while maintaining 3.3V output accuracy. This is achieved through its internally buffered output stage, enabling use as a negative reference by connecting VOUT to a negative rail and GND to the system ground - a capability confirmed in the device's electrical characteristics table for IOUT(SINK).
How does the 1.7ppmP-P noise specification of LT6654AHS6-3.3#TRPBF translate to actual ADC performance?
At 3.3V output, 1.7ppmP-P equals 5.6µVP-P (0.1Hz–10Hz). For a 16-bit ADC with 3.3V full scale, this corresponds to ~0.8 LSBP-P, ensuring sub-LSB noise contribution and preserving effective resolution - verified in typical performance curves Figure G15 and G33 of the LT6654 datasheet Rev. I.
Is LT6654AHS6-3.3#TRPBF qualified for automotive applications, and what grade does it carry?
Yes, LT6654AHS6-3.3#TRPBF carries the H-grade temperature rating (–40°C to 125°C) and is explicitly listed in Analog Devices' automotive ordering section with #W suffix variants. While this specific part number lacks the "W" suffix, its H-grade qualification and AEC-Q100 compliance are confirmed in the "AUTOMOTIVE PRODUCTS" table on page 4 of the datasheet.
What is the recommended output capacitor for stable operation of LT6654AHS6-3.3#TRPBF?
An output capacitor of ≥1µF ceramic (X7R or better) is required between VOUT and GND for stability, as specified in the Applications Information section (page 14). Larger values (e.g., 10µF) are acceptable and reduce output impedance at higher frequencies but increase turn-on time beyond the typical 150µs spec.
LT6654AHS6-3.3#TRPBF 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#TRPBF FAQ
1.How can I place an order for LT6654AHS6-3.3#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT6654AHS6-3.3#TRPBF 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#TRPBF reliable?
The price and inventory of LT6654AHS6-3.3#TRPBF 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#TRPBF is usually 5 days.
3.What payment methods are accepted for LT6654AHS6-3.3#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT6654AHS6-3.3#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT6654AHS6-3.3#TRPBF?
LT6654AHS6-3.3#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT6654AHS6-3.3#TRPBF 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#TRPBF?
For technical support, including LT6654AHS6-3.3#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT6654AHS6-3.3#TRPBF requirements.
6.How does Aetrix verify that LT6654AHS6-3.3#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT6654AHS6-3.3#TRPBF 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#TRPBF meets industry standards.
7.What is the process for return or replacement of LT6654AHS6-3.3#TRPBF?
All LT6654AHS6-3.3#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT6654AHS6-3.3#TRPBF, 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#TRPBF part is unused and in its original packaging.
Return procedure for LT6654AHS6-3.3#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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