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Analog Devices Inc. LT6654AMPS6-3.3#TRPBF
- Part No.:
- LT6654AMPS6-3.3#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
LT6654AMPS6-3.3#TRPBF.pdf
- Description:
- IC VREF SERIES 0.05% TSOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:3,253
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Product details
Overview
LT6654AMPS6-3.3#TRPBF from Analog Devices is a precision 3.3V voltage reference IC with ±0.05% initial accuracy, 10ppm/°C max temperature drift, and ±10mA output drive capability in a 6-lead TSOT-23 package. It operates from –55°C to 125°C and supports high-resolution data acquisition, industrial sensing, and automotive control systems requiring stable low-noise reference voltage.
For engineers reviewing the LT6654AMPS6-3.3#TRPBF datasheet, LT6654AMPS6-3.3#TRPBF pinout, LT6654AMPS6-3.3#TRPBF application, or LT6654AMPS6-3.3#TRPBF equivalent, key selection criteria include guaranteed operation over extended temperature range (–55°C to 125°C), 1.6ppmP-P (0.1Hz–10Hz) noise performance, and ability to both source and sink current while maintaining load regulation ≤8ppm/mA.
Technical Context
The LT6654AMPS6-3.3#TRPBF employs curvature-compensated bandgap architecture with internal buffering to deliver precise, low-drift output. Its design enables operation up to 36V input while maintaining low dropout (≤100mV at 10mA source) and high line regulation (≤5ppm/V).
It features dual-output pins (VOUT on Pins 5 & 6) for improved load regulation, dedicated ground star-point connection (Pin 4), and internally connected DNC pins that must remain unconnected. The device supports bidirectional current flow-sourcing and sinking ±10mA-enabling use as a precision negative reference when configured appropriately.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.3V nominal; provides stable reference for ADC/DAC biasing and precision regulator feedback loops. |
| Initial Accuracy | ±0.05% max; ensures system calibration accuracy without post-manufacture trimming. |
| Temp Coefficient | 10ppm/°C max (A-grade); guarantees ≤±1.3ppm total drift over –55°C to 125°C span. |
| Output Noise | 1.7ppmP-P (0.1Hz–10Hz); minimizes measurement uncertainty in 24-bit data acquisition systems. |
| Supply Range | Up to 36V; allows direct connection to industrial 24V rails without external regulators. |
| Load Regulation | 8ppm/mA max (source); maintains reference stability under varying sensor or DAC load conditions. |
| Operating Temp | –55°C to 125°C (MP-grade); qualified for under-hood automotive and downhole industrial environments. |
Pinout & Package
Package: 6-lead Plastic TSOT-23 (1mm profile), RoHS-compliant, tape-and-reel (#TRPBF).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 2) | Primary Device Ground | Star-ground connection point for load and internal circuitry; must be tied directly to system ground plane. |
| VIN (Pin 4) | Power Supply Input | Accepts 3.8V to 36V; requires ≥0.1µF bypass capacitor to GND for stability and transient immunity. |
| VOUT (Pin 5) | Main Output Terminal | Delivers regulated 3.3V; requires ≥1µF output capacitor for stability and low-noise performance. |
| VOUT (Pin 6) | Secondary Output Terminal | Internally tied to Pin 5; must be connected externally to improve load regulation and reduce output impedance. |
| DNC (Pin 1) | Do Not Connect | Internally connected; external connection risks leakage current and accuracy degradation. |
| NC (Pin 3) | Not Connected | No internal connection; may be left floating or tied to GND/VIN/VOUT per layout requirements. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional Output Drive | ±10mA sourcing/sinking enables use as positive or negative reference without external components. |
| Extended Temperature Range | –55°C to 125°C operation supports automotive engine control units and oilfield electronics. |
| Low Thermal Hysteresis | 50ppm max over –55°C ↔ 125°C cycle; preserves calibration integrity after thermal cycling. |
| Low Dropout Voltage | 100mV max at 10mA source; allows operation from supply rails as low as 3.4V for 3.3V output. |
| AEC-Q100 Qualified | Qualified for automotive applications per AEC-Q100 Rev G stress testing standards. |
Applications
| Automotive Engine Control Unit | High-Resolution Data Acquisition |
|---|---|
Use Scenario: Reference for analog front-end of knock sensor signal conditioning and cylinder pressure monitoring. IC Role / Device Role / Timing Role: Precision 3.3V reference for 16-bit ADC sampling of piezoelectric sensor outputs. Use Value: 10ppm/°C drift and 1.7ppmP-P noise ensure <±0.01% measurement error across full engine operating temperature range. | Use Scenario: Calibration reference in portable multichannel DAQ for structural health monitoring. IC Role / Device Role / Timing Role: Stable excitation and reference source for 24-bit sigma-delta ADCs measuring strain gauges and thermocouples. Use Value: ±0.05% initial accuracy and long-term drift of 60ppm/√kHr enable field recalibration intervals >2 years. |
| Industrial Process Controller | Medical Patient Monitoring |
Use Scenario: Reference for 4–20mA loop transmitter and isolated analog output stage in PLC I/O modules. IC Role / Device Role / Timing Role: High-stability 3.3V reference for DAC-based current loop control and sensor excitation. Use Value: 36V supply tolerance and ±10mA drive simplify power architecture and eliminate need for auxiliary LDOs. | Use Scenario: Reference for ECG/EEG analog signal chain in battery-powered patient monitors. IC Role / Device Role / Timing Role: Low-noise, low-power 3.3V reference for instrumentation amplifiers and ADCs in Class II medical devices. Use Value: 350µA typical supply current and 1.7ppmP-P noise support >72-hour battery life and sub-microvolt signal 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 |
|---|---|---|---|
| REF5033IDR | 3.3V, ±0.05% initial accuracy, 3ppm/°C drift, SOIC-8 package, 1.2mA supply current | Lower drift but higher power and larger footprint; not rated below –40°C | Prefer for lab-grade instrumentation where ultra-low drift outweighs size/power constraints. |
| ADR4533BRZ | 3.3V, ±0.02% initial accuracy, 2ppm/°C drift, SOIC-8, 950µA supply current, 1.5ppmP-P noise | Higher accuracy and lower noise, but only rated to 125°C (not –55°C); no sink capability | Choose for high-end test equipment needing best-in-class specs, with relaxed environmental requirements. |
Compared with REF5033IDR and ADR4533BRZ, the LT6654AMPS6-3.3#TRPBF offers unique combination of extended temperature range (–55°C to 125°C), bidirectional current capability, and compact TSOT-23 packaging-making it the only option suitable for space-constrained, wide-temperature automotive or industrial embedded designs requiring both sourcing and sinking.
Availability
LT6654AMPS6-3.3#TRPBF is available at Aetrix Electronics and suitable for automotive engine control, high-temperature industrial sensors, and portable medical instrumentation requiring stable component supply across extreme environmental conditions.
Supply support for LT6654AMPS6-3.3#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 for real-world signal conversion challenges.
The LT6654 family was designed specifically for precision voltage reference applications demanding low drift, low noise, and wide-temperature operation in harsh environments-including automotive, industrial, and medical systems.
FAQ
What is the maximum input voltage rating for LT6654AMPS6-3.3#TRPBF?
The absolute maximum input voltage for LT6654AMPS6-3.3#TRPBF is 38V relative to GND. However, the recommended operating range is (VOUT + 0.5V) to 36V - i.e., 3.8V to 36V - ensuring specified performance including line regulation ≤5ppm/V and dropout ≤100mV. Exceeding 36V may degrade long-term reliability even if within absolute limits.
Does LT6654AMPS6-3.3#TRPBF support negative reference configurations?
Yes, LT6654AMPS6-3.3#TRPBF can operate as a precision negative reference by sinking current. When the output is pulled below ground (e.g., via external resistor network), the device maintains regulation with same ±0.05% accuracy and 10ppm/°C drift as in positive mode - a feature enabled by its bidirectional output stage, unlike most unidirectional references.
What is the recommended output capacitance for stable operation of LT6654AMPS6-3.3#TRPBF?
The datasheet specifies a minimum 1µF ceramic output capacitor (X7R or better) placed as close as possible to Pins 5 and 6. Larger values (e.g., 10µF) further reduce noise and improve transient response but increase turn-on time (150µs typical with 1µF). Avoid tantalum or electrolytic capacitors due to ESR-related instability risks.
How does the LT6654AMPS6-3.3#TRPBF achieve 10ppm/°C temperature coefficient?
LT6654AMPS6-3.3#TRPBF achieves its 10ppm/°C max drift through curvature-compensated bandgap core combined with laser-trimmed thin-film resistors and advanced process matching. This architecture corrects second-order temperature effects inherent in standard bandgap references, verified across –55°C to 125°C in MP-grade qualification testing.
Is LT6654AMPS6-3.3#TRPBF pin-compatible with other LT6654 variants in SOT-23 package?
Yes, all LT6654 variants in the 6-lead TSOT-23 package - including LT6654AMPS6-3.3#TRPBF, LT6654BHS6-3.3#TRPBF, and LT6654AIS6-3.3#TRPBF - share identical pinout, footprint, and solder reflow profile. Only electrical specifications (accuracy, drift, temp range) differ; no PCB redesign is needed when upgrading between grades.
LT6654AMPS6-3.3#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:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-6
LT6654AMPS6-3.3#TRPBF FAQ
1.How can I place an order for LT6654AMPS6-3.3#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT6654AMPS6-3.3#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 LT6654AMPS6-3.3#TRPBF reliable?
The price and inventory of LT6654AMPS6-3.3#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT6654AMPS6-3.3#TRPBF is usually 5 days.
3.What payment methods are accepted for LT6654AMPS6-3.3#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT6654AMPS6-3.3#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT6654AMPS6-3.3#TRPBF?
LT6654AMPS6-3.3#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT6654AMPS6-3.3#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 LT6654AMPS6-3.3#TRPBF?
For technical support, including LT6654AMPS6-3.3#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT6654AMPS6-3.3#TRPBF requirements.
6.How does Aetrix verify that LT6654AMPS6-3.3#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT6654AMPS6-3.3#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 LT6654AMPS6-3.3#TRPBF meets industry standards.
7.What is the process for return or replacement of LT6654AMPS6-3.3#TRPBF?
All LT6654AMPS6-3.3#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT6654AMPS6-3.3#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 LT6654AMPS6-3.3#TRPBF part is unused and in its original packaging.
Return procedure for LT6654AMPS6-3.3#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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