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Analog Devices Inc. LT6654BHLS8-2.5
- Part No.:
- LT6654BHLS8-2.5
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- 8-CLCC
- Datasheet:
-
LT6654BHLS8-2.5.pdf
- Description:
- IC VREF SERIES 0.1% 8LCC
- Quantity:
- Payment:
- Shipping:
Inventory:3,141
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Product details
Overview
LT6654BHLS8-2.5 from Analog Devices is a precision 2.5V voltage reference IC in an 8-lead ceramic LCC (5mm × 5mm) hermetic package, rated for operation from –40°C to 125°C. It delivers ±0.10% initial accuracy, 20ppm/°C max temperature drift, 1.6ppmP-P (0.1Hz–10Hz) low noise, ±10mA output drive, and 100mV max dropout - enabling high-resolution data acquisition and automotive sensor conditioning.
For engineers reviewing the LT6654BHLS8-2.5 datasheet, LT6654BHLS8-2.5 pinout, LT6654BHLS8-2.5 application, or LT6654BHLS8-2.5 equivalent, key selection criteria include guaranteed performance over extended temperature range, low thermal hysteresis (15ppm for LS8), long-term stability (15ppm/√kHr), and AEC-Q100-compliant variants for automotive use.
Technical Context
The LT6654BHLS8-2.5 integrates a curvature-compensated bandgap core with a buffered output stage, enabling bidirectional ±10mA current sourcing/sinking while maintaining precise load regulation (≤8ppm/mA sourcing, ≤20ppm/mA sinking). Its architecture supports stable operation with ≥1µF output capacitance and tolerates input voltages up to 36V.
Designed for high-stability applications, it features low thermal hysteresis (15ppm over –40°C to 125°C), 5ppm/V line regulation, and 15ppm/√kHr long-term drift - all validated in the hermetic LS8 package, which provides superior environmental stability versus plastic SOT-23 variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.5V nominal; fixed, factory-trimmed value with no external adjustment required. |
| Initial Accuracy | ±0.10% max at 25°C; ensures absolute ADC reference error ≤2.5mV before calibration. |
| Temp Coefficient | 20ppm/°C max (B-grade); contributes ≤50ppm (0.125mV) error across –40°C to 125°C span. |
| Output Noise | 1.6ppmP-P (0.1Hz–10Hz); adds <1.6µVP-P uncertainty in precision 24-bit DAQ systems. |
| Load Regulation | 8ppm/mA max (sourcing); maintains stability under dynamic load changes up to ±10mA. |
| Dropout Voltage | 100mV max at 10mA; allows operation with VIN as low as 2.6V for 2.5V output. |
| Supply Range | Up to 36V; enables direct connection to unregulated industrial rails without pre-regulation. |
Pinout & Package
LT6654BHLS8-2.5 uses an 8-pin leadless chip carrier (LS8) package: 5mm × 5mm surface-mount, hermetically sealed ceramic construction optimized for long-term stability and low thermal hysteresis.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Internal ground reference | Must be connected to system ground near Pin 2; not for external bypassing. |
| GND (Pin 2) | Primary device ground | Star-ground connection point for load and internal GND pins; critical for low-noise performance. |
| DNC (Pin 3) | Do Not Connect | Internally connected; external connection risks leakage-induced error or damage. |
| VIN (Pin 4) | Power supply input | Accepts 2.6V to 36V; requires ≥0.1µF bypass capacitor to GND for stability. |
| DNC (Pin 5) | Do Not Connect | Internally connected; floating or routing to other nodes degrades accuracy. |
| VOUT (Pin 6) | Reference output | Delivers 2.5V ±0.10%; requires ≥1µF output capacitor for transient stability. |
| VOUT (Pin 7) | Reference output (tied to Pin 6) | Parallel output path; must be shorted to Pin 6 to ensure proper load regulation. |
| VIN (Pin 8) | Power supply input (redundant) | Second VIN terminal; connect to same rail as Pin 4 to reduce trace impedance effects. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional ±10mA drive | Enables active load compensation and negative reference configuration without external circuitry. |
| Hermetic LS8 package | Provides 15ppm thermal hysteresis and 15ppm/√kHr long-term drift - 2× better than plastic SOT-23 variants. |
| Low 1.6ppmP-P noise | Minimizes quantization uncertainty in 24-bit sigma-delta ADCs used in precision instrumentation. |
| Wide 2.6V–36V supply range | Eliminates need for dedicated LDO pre-regulator in battery-powered or industrial 24V systems. |
| AEC-Q100 qualified (H-grade) | Validated for automotive engine control, ADAS sensors, and infotainment power management. |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Temperature Transmitter |
|---|---|
Use Scenario: Providing stable 2.5V reference for analog front-end of pressure and knock sensors in under-hood ECU modules. IC Role / Device Role / Timing Role: Precision voltage reference for ADC conversion of sensor signals in harsh thermal environments. Use Value: Maintains ±0.10% accuracy and 20ppm/°C drift over –40°C to 125°C, ensuring consistent sensor calibration across operating life. | Use Scenario: Reference source for 4–20mA loop-powered RTD/thermocouple transmitters in oil & gas field instruments. IC Role / Device Role / Timing Role: Primary reference for signal conditioning and DAC output in isolated analog output stages. Use Value: Hermetic LS8 package ensures <15ppm thermal hysteresis and <15ppm/√kHr aging - critical for field-deployed devices requiring 10+ year calibration stability. |
| High-Resolution Data Acquisition System | Medical Patient Monitoring Equipment |
Use Scenario: Reference for 24-bit delta-sigma ADC in portable EEG or ECG recorders requiring ultra-low noise performance. IC Role / Device Role / Timing Role: Low-noise, low-drift reference enabling sub-µV resolution in battery-operated medical devices. Use Value: 1.6ppmP-P (0.1Hz–10Hz) noise and ±10mA drive support clean signal acquisition without external buffering. | Use Scenario: Reference for analog signal chain in bedside vital signs monitors (SpO₂, NIBP, ECG) requiring clinical-grade accuracy. IC Role / Device Role / Timing Role: Stable 2.5V reference for precision gain-setting and ADC/DAC biasing in safety-critical analog subsystems. Use Value: AEC-Q100 H-grade qualification and full –40°C to 125°C specification provide design margin for extended reliability validation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT6654AHLS8-2.5 | Higher grade: ±0.05% initial accuracy and 10ppm/°C max drift vs. B-grade's ±0.10% and 20ppm/°C. | Suitable where tighter initial tolerance is required (e.g., factory-calibrated test equipment). | Select when absolute accuracy at power-up outweighs cost sensitivity; same LS8 package and pinout. |
| REF5025IDR | TI part: ±0.05% initial accuracy, 3ppm/°C drift, but only rated to 125°C (not –40°C start) and no AEC-Q100 qualification. | Better drift spec but lacks guaranteed low-temp operation and automotive qualification. | Prefer for lab-grade instrumentation where ambient temp stays >–20°C; avoid for automotive or wide-temperature industrial use. |
Compared with LT6654AHLS8-2.5, the LT6654BHLS8-2.5 trades 0.05% initial accuracy and 10ppm/°C drift for lower cost and sufficient performance in production automotive and industrial systems; versus REF5025IDR, it offers guaranteed –40°C operation and AEC-Q100 compliance at the expense of slightly higher drift.
Availability
LT6654BHLS8-2.5 is available at Aetrix Electronics and suitable for automotive engine control units, industrial temperature transmitters, and high-resolution data acquisition systems requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for LT6654BHLS8-2.5 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 semiconductor leader specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision measurement and control.
The LT6654 family was designed for applications demanding ultra-stable voltage references in harsh environments - including automotive, industrial sensing, and medical instrumentation - with emphasis on low noise, low drift, and hermetic packaging.
FAQ
What is the operating temperature range for the LT6654BHLS8-2.5?
The LT6654BHLS8-2.5 is fully specified from –40°C to 125°C. This H-grade rating is validated across all electrical parameters including initial accuracy, temperature coefficient, load regulation, and long-term drift - making it suitable for under-hood automotive and high-temperature industrial deployments where plastic-package alternatives fail.
Does the LT6654BHLS8-2.5 support sinking current, and how much?
Yes, the LT6654BHLS8-2.5 supports bidirectional current: it can both source and sink up to ±10mA. When sinking 10mA, its load regulation is specified at ≤20ppm/mA, and dropout remains ≤120mV - enabling use as a precision negative reference or active load compensation element without external components.
What output capacitor is required for stable operation of the LT6654BHLS8-2.5?
The LT6654BHLS8-2.5 requires a minimum 1µF output capacitor (X7R or better) connected directly between VOUT (Pins 6 & 7) and GND (Pin 2). Larger values improve transient response but increase turn-on time; 1µF achieves optimal balance of stability, settling (<150µs), and noise filtering per Analog Devices' validated design guidelines.
Is the LT6654BHLS8-2.5 AEC-Q100 qualified, and for which stress tests?
Yes, the LT6654BHLS8-2.5 is AEC-Q100 qualified for automotive applications. It meets Grade 1 requirements (–40°C to 125°C), including HTOL, TC, UHAST, and ESD testing per AEC-Q100 Rev H. This qualification covers the full LS8 package variant and applies specifically to the BHLS8-2.5 ordering option, not generic LT6654 family members.
How does the LS8 hermetic package improve long-term stability compared to SOT-23 versions?
The LS8 hermetic ceramic package reduces long-term drift to 15ppm/√kHr and thermal hysteresis to 15ppm (–40°C to 125°C), versus 60ppm/√kHr and 40–50ppm for plastic SOT-23 variants. This is achieved via moisture- and gas-impermeable sealing, minimizing die stress shifts and parameter drift over decades of field operation - critical for infrastructure and medical equipment.
LT6654BHLS8-2.5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 8-CLCC
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- -
- Current - Output:
- 10 mA
- Tolerance:
- ±0.1%
- Temperature Coefficient:
- 20ppm/°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 ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-CLCC (5x5)
LT6654BHLS8-2.5 FAQ
1.How can I place an order for LT6654BHLS8-2.5 through Aetrix?
Please submit a Request for Quotation (RFQ) for LT6654BHLS8-2.5 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 LT6654BHLS8-2.5 reliable?
The price and inventory of LT6654BHLS8-2.5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT6654BHLS8-2.5 is usually 5 days.
3.What payment methods are accepted for LT6654BHLS8-2.5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT6654BHLS8-2.5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT6654BHLS8-2.5?
LT6654BHLS8-2.5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT6654BHLS8-2.5 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 LT6654BHLS8-2.5?
For technical support, including LT6654BHLS8-2.5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT6654BHLS8-2.5 requirements.
6.How does Aetrix verify that LT6654BHLS8-2.5 is sourced from the original manufacturer or authorized distributors?
All LT6654BHLS8-2.5 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 LT6654BHLS8-2.5 meets industry standards.
7.What is the process for return or replacement of LT6654BHLS8-2.5?
All LT6654BHLS8-2.5 units undergo pre-shipment inspection (PSI). If there is an issue with LT6654BHLS8-2.5, 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 LT6654BHLS8-2.5 part is unused and in its original packaging.
Return procedure for LT6654BHLS8-2.5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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