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Analog Devices Inc. LT6654BHS6-3.3#TRMPBF
- Part No.:
- LT6654BHS6-3.3#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
LT6654BHS6-3.3#TRMPBF.pdf
- Description:
- IC VREF SERIES 0.1% TSOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:4,080
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Product details
Overview
LT6654BHS6-3.3#TRMPBF from Analog Devices is a precision 3.3V voltage reference IC with ±0.10% initial accuracy, 20ppm/°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 data acquisition systems where stable excitation or ADC reference voltage is critical.
For engineers reviewing the LT6654BHS6-3.3#TRMPBF datasheet, LT6654BHS6-3.3#TRMPBF pinout, LT6654BHS6-3.3#TRMPBF application, or LT6654BHS6-3.3#TRMPBF equivalent, key selection criteria include guaranteed performance across –40°C to 125°C, low 1.7ppmP-P (0.1Hz–10Hz) noise, 8ppm/mA load regulation (sourcing), and compatibility with standard 1µF output capacitance for stability.
Technical Context
The LT6654BHS6-3.3#TRMPBF employs curvature-compensated bandgap architecture with internal buffering to deliver precise, low-drift output while sourcing or sinking ±10mA. Its design integrates low thermal hysteresis (40ppm over –40°C to 125°C in TSOT-23) and 5ppm/V line regulation up to 36V, enabling robust operation in varying supply conditions.
Unlike basic references, it features dual-output pins (VOUT on Pins 5 and 6) for improved load regulation and includes dedicated GND pins (Pins 2 and 3) with star-grounding recommendation to minimize ground bounce and maintain accuracy under dynamic load conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.3V nominal; provides stable reference for 12-bit to 16-bit SAR and delta-sigma ADCs without external scaling. |
| Initial Accuracy | ±0.10% max at 25°C; ensures ≤±3.3mV absolute error at power-up before calibration. |
| Temp Coefficient | 20ppm/°C max over –40°C to 125°C; contributes ≤±825ppm (±2.72mV) drift across full range. |
| Output Noise | 1.7ppmP-P (0.1Hz–10Hz); enables <16-bit effective resolution in precision measurement front-ends. |
| Load Regulation | 8ppm/mA max (sourcing); maintains stability with 10mA load step, critical for multiplexed sensor excitation. |
| Dropout Voltage | 100mV max at 10mA source; allows operation with VIN as low as 3.4V, supporting low-headroom supplies. |
| Supply Range | Up to 36V input; accommodates unregulated 24V industrial rails with minimal external filtering. |
Pinout & Package
LT6654BHS6-3.3#TRMPBF uses a 6-lead ThinSOT™ (TSOT-23) plastic package (1mm height), RoHS-compliant and halogen-free, optimized for space-constrained PCB layouts in automotive and industrial modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 2) | Primary Device Ground | Main return path; must be star-connected to load ground and Pin 3 to minimize ground loop errors. |
| GND (Pin 3) | Internal Function Ground | Internal bias ground; requires low-inductance connection near Pin 2 to suppress substrate coupling. |
| VIN (Pin 4) | Power Supply Input | Accepts 3.4V to 36V; requires ≥0.1µF ceramic bypass capacitor to GND for PSRR optimization. |
| VOUT (Pin 5) | Main Output Terminal | Primary 3.3V reference output; connects to 1µF minimum output capacitor for stability and low noise. |
| VOUT (Pin 6) | Secondary Output Terminal | Internally tied to Pin 5; must be connected externally to ensure proper load regulation and current sharing. |
| DNC (Pin 1) | Do Not Connect | No internal connection; floating or grounded-must avoid routing traces or vias to prevent leakage-induced error. |
Key Features
| Feature | Design Value |
|---|---|
| Sinks and sources ±10mA | Enables direct driving of multiple op-amp bias networks or DAC reference inputs without external buffers. |
| AEC-Q100 qualified (H-grade) | Validated for automotive applications including engine control units and battery management systems. |
| Low 1.7ppmP-P noise (0.1Hz–10Hz) | Reduces quantization uncertainty in high-resolution weigh scales and medical instrumentation. |
| 150µs turn-on time (0.1% settling) | Supports fast wake-up sequences in battery-powered data loggers and portable test equipment. |
| Long-term drift: 60ppm/√kHr | Ensures <±120ppm (±0.4mV) drift over 10 years in continuously powered industrial controllers. |
Applications
| Automotive Engine Control Unit | Industrial Temperature Transmitter |
|---|---|
Use Scenario: Provides reference voltage for analog front-end conditioning of thermocouple and RTD signals in under-hood ECU modules. IC Role / Device Role / Timing Role: Precision 3.3V reference for 16-bit ADC and sensor excitation circuitry. Use Value: Maintains ±0.10% accuracy across –40°C to 125°C ambient, eliminating need for system-level recalibration during thermal cycling. | Use Scenario: Serves as stable reference for 4–20mA loop-powered temperature transmitters in oil & gas field instruments. IC Role / Device Role / Timing Role: Low-noise, high-stability reference for voltage-to-current conversion and ADC reference. Use Value: 1.7ppmP-P noise and 20ppm/°C drift enable <0.1°C measurement repeatability over full operating range. |
| Portable High-Resolution DMM | Medical Patient Monitor Analog Front-End |
Use Scenario: Reference source for autoranging multimeter ADCs requiring sub-10ppm linearity and low drift. IC Role / Device Role / Timing Role: Primary 3.3V reference for dual-slope and sigma-delta converters. Use Value: 150µs turn-on time and 5ppm/V line regulation allow fast range switching with minimal settling delay. | Use Scenario: Supplies reference voltage to ECG/EEG analog signal chains in battery-operated patient monitors. IC Role / Device Role / Timing Role: Low-noise, low-drift reference for instrumentation amplifiers and ADCs. Use Value: ±10mA drive capability powers multiple gain stages; 1.7ppmP-P noise preserves signal integrity for microvolt-level biopotential measurements. |
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 | Lower 3ppm/°C drift but only ±0.05% initial accuracy; 10mA max output; requires 1.2V headroom. | Preferred for ultra-low-drift automotive ADAS sensors; not rated for –40°C to 125°C full-range accuracy. | Select when long-term stability dominates over initial tolerance and supply headroom permits. |
| ADR4533BRZ | Higher 3.3V accuracy (±0.02%) but limited to –40°C to 125°C with derated specs; 10ppm/°C drift; no sink capability. | Better for lab-grade instrumentation needing tighter initial spec; unsuitable for bidirectional current loads. | Choose for metrology-grade bench equipment where sink current and wide-temp guaranteed specs are unnecessary. |
Compared with REF5033QPWRQ1 and ADR4533BRZ, the LT6654BHS6-3.3#TRMPBF uniquely combines guaranteed ±0.10% initial accuracy, 20ppm/°C drift, and ±10mA bidirectional drive across –40°C to 125°C - enabling single-part qualification for harsh-environment industrial and automotive designs without derating or external support circuitry.
Availability
LT6654BHS6-3.3#TRMPBF is available at Aetrix Electronics and suitable for automotive engine control units, industrial temperature transmitters, and portable high-resolution digital multimeters requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for LT6654BHS6-3.3#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, 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 designed for precision voltage reference applications demanding low noise, low drift, and wide supply operation - particularly in harsh environments such as automotive under-hood systems and high-temperature industrial process control.
FAQ
What is the guaranteed initial accuracy of the LT6654BHS6-3.3#TRMPBF over temperature?
The LT6654BHS6-3.3#TRMPBF guarantees ±0.10% initial accuracy at 25°C, with performance fully specified from –40°C to 125°C. Unlike grade-A variants, the 'B' grade trades tighter initial tolerance for cost-effective high-temperature reliability - making LT6654BHS6-3.3#TRMPBF ideal for automotive and industrial applications where full-range drift behavior is more critical than room-temperature calibration offset.
Can the LT6654BHS6-3.3#TRMPBF sink current, and what is the maximum sink capability?
Yes, the LT6654BHS6-3.3#TRMPBF can both source and sink up to ±10mA. Its ability to sink current enables use as a negative reference or for active load regulation in precision current sources. The sink capability is fully characterized across –40°C to 125°C, with 30ppm/mA load regulation (sinking) and 120mV dropout at –10mA - confirmed in the official LT6654 datasheet Rev. I, page 6.
What output capacitor value is required for stable operation of the LT6654BHS6-3.3#TRMPBF?
The LT6654BHS6-3.3#TRMPBF requires a minimum 1µF ceramic output capacitor connected between VOUT (Pins 5 and 6) and GND for stable operation and optimal noise performance. Larger values (e.g., 10µF) further reduce high-frequency noise but increase turn-on time. This requirement is explicitly stated in the Applications Information section (page 14) and validated across all output voltage options in the LT6654 family.
Is the LT6654BHS6-3.3#TRMPBF qualified for automotive applications?
Yes, the LT6654BHS6-3.3#TRMPBF carries the 'H' temperature grade (–40°C to 125°C) and is explicitly listed in the Automotive Products section of the datasheet (page 4) as meeting AEC-Q100 requirements. Its qualification covers stress testing, reliability, and guaranteed parametric performance across the full automotive temperature range - making LT6654BHS6-3.3#TRMPBF suitable for engine control, battery monitoring, and ADAS subsystems.
How does the LT6654BHS6-3.3#TRMPBF achieve low noise performance?
The LT6654BHS6-3.3#TRMPBF achieves 1.7ppmP-P (0.1Hz–10Hz) noise through curvature-compensated bandgap core design, low-noise internal amplification, and optimized die layout minimizing 1/f noise contributors. Its buffered output stage isolates the reference core from load-induced noise, and the mandatory 1µF output capacitor forms a low-pass filter that attenuates higher-frequency components - all verified in the Typical Performance Characteristics (page 9, Figure G15).
LT6654BHS6-3.3#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:
- ±0.1%
- Temperature Coefficient:
- 20ppm/°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
LT6654BHS6-3.3#TRMPBF FAQ
1.How can I place an order for LT6654BHS6-3.3#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT6654BHS6-3.3#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 LT6654BHS6-3.3#TRMPBF reliable?
The price and inventory of LT6654BHS6-3.3#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT6654BHS6-3.3#TRMPBF is usually 5 days.
3.What payment methods are accepted for LT6654BHS6-3.3#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT6654BHS6-3.3#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT6654BHS6-3.3#TRMPBF?
LT6654BHS6-3.3#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT6654BHS6-3.3#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 LT6654BHS6-3.3#TRMPBF?
For technical support, including LT6654BHS6-3.3#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT6654BHS6-3.3#TRMPBF requirements.
6.How does Aetrix verify that LT6654BHS6-3.3#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LT6654BHS6-3.3#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 LT6654BHS6-3.3#TRMPBF meets industry standards.
7.What is the process for return or replacement of LT6654BHS6-3.3#TRMPBF?
All LT6654BHS6-3.3#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT6654BHS6-3.3#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 LT6654BHS6-3.3#TRMPBF part is unused and in its original packaging.
Return procedure for LT6654BHS6-3.3#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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