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Analog Devices Inc. LT6654AHLS8-2.048
- Part No.:
- LT6654AHLS8-2.048
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- 8-CLCC
- Datasheet:
-
LT6654AHLS8-2.048.pdf
- Description:
- IC VREF SERIES 0.05% 8LCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,859
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Product details
Overview
LT6654AHLS8-2.048 from Analog Devices is a precision 2.048V voltage reference IC in an 8-lead ceramic LCC (5mm × 5mm) hermetic package, rated for –40°C to 125°C operation. It delivers ±0.05% initial accuracy, 10ppm/°C max temperature drift, 1.6ppmP-P (0.1Hz–10Hz) low noise, ±10mA output drive, and 100mV max dropout - enabling high-resolution ADC/DAC biasing in automotive sensor modules and industrial data acquisition systems.
For engineers reviewing the LT6654AHLS8-2.048 datasheet, LT6654AHLS8-2.048 pinout, LT6654AHLS8-2.048 application, or LT6654AHLS8-2.048 equivalent, this page provides verified specifications, LS8 package terminal mapping, real-world use cases in precision regulation and ATE, and validated alternative options with documented functional trade-offs.
Technical Context
The LT6654AHLS8-2.048 integrates a curvature-compensated bandgap core with a buffered output stage, enabling simultaneous sourcing and sinking of ±10mA while maintaining load regulation ≤8ppm/mA. Its LS8 hermetic ceramic package reduces thermal hysteresis to 15ppm over –40°C to 125°C and long-term drift to 15ppm/√kHr.
It operates across a 2.548V to 36V input range (VIN ≥ VOUT + 0.5V), supports stable operation with ≥1µF output capacitance, and achieves 150µs turn-on time to 0.1% settling. The device meets AEC-Q100 Grade H requirements for automotive applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.048V ±0.05% - matches common 12-bit DAC/ADC full-scale reference points without scaling. |
| Initial Accuracy | ±0.05% max - eliminates need for system-level trimming in factory calibration workflows. |
| Temp Coefficient | 10ppm/°C max - ensures ≤1.25 LSB error over –40°C to 125°C in 16-bit systems (2.048V, 65536 steps). |
| Output Noise | 1.6ppmP-P (0.1Hz–10Hz) - contributes <0.33 LSB peak-to-peak noise in 16-bit 2.048V systems. |
| Load Regulation | 8ppm/mA max (source), 20ppm/mA max (sink) - maintains stability under dynamic sensor excitation loads. |
| Dropout Voltage | 100mV max at 10mA - enables operation from low-headroom supplies like 2.15V battery rails. |
| Supply Range | 2.548V to 36V - supports direct connection to unregulated 3.3V, 5V, 12V, or 24V industrial buses. |
Pinout & Package
Package: 8-lead ceramic leadless chip carrier (LS8), 5mm × 5mm surface-mount hermetic package with gold-plated terminations. Designed for high-stability, low-hysteresis operation in harsh thermal environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Internal function ground | Must be connected to system ground near Pin 2; forms internal bias reference node. |
| GND (Pin 2) | Primary device ground | Star-ground connection point for load return and external decoupling; lowest impedance GND path. |
| DNC (Pin 3) | Do Not Connect | No internal connection; floating or leakage to VIN/GND degrades accuracy and noise performance. |
| VIN (Pin 4) | Power supply input | Requires ≥0.1µF ceramic bypass to Pin 2 GND; supports up to 36V with 100mV dropout headroom. |
| DNC (Pin 5) | Do Not Connect | Internally tied; external connection causes parametric shift and increased hysteresis. |
| VOUT (Pin 6) | Reference output | Main 2.048V source/sink node; requires ≥1µF output capacitor for stability and low-noise operation. |
| VOUT (Pin 7) | Reference output | Parallel output terminal tied internally to Pin 6; must be connected to Pin 6 for optimal load regulation. |
| VIN (Pin 8) | Power supply input | Second VIN terminal; connect directly to same supply rail as Pin 4 with low-inductance trace. |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic LS8 packaging | Enables 15ppm thermal hysteresis and 15ppm/√kHr long-term drift - critical for recalibration-interval extension in field-deployed instrumentation. |
| Bidirectional ±10mA drive | Supports active sensor biasing (e.g., RTD excitation) and sink-mode DAC reference termination without external op-amps. |
| Low 1.6ppmP-P noise | Minimizes quantization uncertainty in 16+ bit SAR and delta-sigma ADCs used in portable test equipment. |
| AEC-Q100 Grade H qualified | Validated for automotive under-hood applications including engine control unit (ECU) sensor signal conditioning and battery monitoring. |
| Wide 2.548V–36V supply range | Eliminates need for pre-regulation in multi-rail industrial PLC I/O modules powered from 24V DC bus. |
Applications
| Automotive Sensor Signal Conditioning | High-Resolution Data Acquisition |
|---|---|
Use Scenario: Providing stable 2.048V reference for analog front-end of exhaust gas oxygen (EGO) sensor interface in engine control units. IC Role / Device Role / Timing Role: Precision voltage reference for 16-bit ADC digitizing sensor output; sinks 2mA heater current while sourcing 1mA signal bias. Use Value: Enables <1.25 LSB total error over –40°C to 125°C, meeting ASAM MCD-2 MC calibration requirements for OBD-II compliance. | Use Scenario: Reference for 24-bit delta-sigma ADC in portable dissolved oxygen (DO) meter used in environmental water quality testing. IC Role / Device Role / Timing Role: Low-noise, low-drift reference ensuring <0.1ppm measurement resolution over 8-hour field deployments. Use Value: 1.6ppmP-P noise and 10ppm/°C drift prevent baseline drift during temperature-cycled measurements in uncontrolled ambient conditions. |
| Precision Industrial Regulators | Automated Test Equipment (ATE) |
Use Scenario: Setpoint reference in programmable 0–20mA loop calibrator used for field instrument verification in oil & gas refineries. IC Role / Device Role / Timing Role: Stable 2.048V reference for DAC-based current loop setpoint generation; operates from 3.3V LDO with 100mV headroom. Use Value: ±0.05% initial accuracy and 15ppm/√kHr long-term drift ensure calibration validity for 12 months between lab recalibrations. | Use Scenario: Reference source for multi-channel 16-bit DACs in semiconductor wafer prober test head controlling bias voltages for DUT characterization. IC Role / Device Role / Timing Role: High-drive, low-noise reference supplying 5mA per channel to 32 parallel DACs with shared VREF. Use Value: ±10mA sourcing capability and 8ppm/mA load regulation maintain <0.01% channel-to-channel matching across thermal gradients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT6654BHLS8-2.048 | ±0.10% initial accuracy, 20ppm/°C max drift - relaxed grade with identical LS8 package and drive capability. | Suitable for cost-sensitive industrial controls where 16-bit accuracy is sufficient but 12-month calibration intervals are acceptable. | Select when budget constraints outweigh need for highest-grade metrology performance; shares footprint and layout. |
| ADR4520BTRZ-EP | 2.048V, ±0.02% initial accuracy, 3ppm/°C max drift, 1.75ppmP-P noise, SOIC-8 package - higher accuracy but lower drive (±10mA not guaranteed; typical ±5mA). | Preferred for ultra-high-precision lab instruments requiring sub-LSB stability, but unsuitable for high-current sensor biasing. | Choose for metrology-grade systems where noise and drift dominate over drive; requires PCB redesign due to SOIC-8 footprint. |
Compared with LT6654BHLS8-2.048 and ADR4520BTRZ-EP, the LT6654AHLS8-2.048 uniquely balances A-grade accuracy, LS8 hermetic stability, and robust ±10mA bidirectional drive - making it optimal for automotive and industrial applications demanding both precision and load resilience without layout changes.
Availability
LT6654AHLS8-2.048 is available at Aetrix Electronics and suitable for automotive sensor modules, high-resolution data acquisition systems, and precision industrial regulators requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LT6654AHLS8-2.048 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 specifically for applications demanding metrology-grade voltage references with wide supply range, low noise, and high output drive - targeting automotive sensing, portable instrumentation, and industrial process control.
FAQ
What is the maximum operating temperature range for the LT6654AHLS8-2.048?
The LT6654AHLS8-2.048 is fully specified from –40°C to 125°C. This Grade H temperature rating is confirmed in the official Analog Devices datasheet Rev. I, Order Information table, and Absolute Maximum Ratings section. The LS8 hermetic package ensures stable performance across this range, with thermal hysteresis limited to 15ppm.
Does the LT6654AHLS8-2.048 support sinking current, and if so, how much?
Yes, the LT6654AHLS8-2.048 supports bidirectional operation and can sink up to –10mA while maintaining specified accuracy and load regulation. This capability is explicitly stated in the "DESCRIPTION" section and verified in the Electrical Characteristics table under Load Regulation (IOUT(SINK) = 10mA), where worst-case drift is 20ppm/mA.
What output capacitor value is required for stable operation of the LT6654AHLS8-2.048?
A minimum 1µF ceramic output capacitor is required for stable operation of the LT6654AHLS8-2.048, as specified in the Applications Information section and Pin Functions description for Pin 6 (VOUT). Larger values improve low-frequency noise rejection but increase turn-on time beyond the typical 150µs specification.
Is the LT6654AHLS8-2.048 AEC-Q100 qualified, and for which grade?
Yes, the LT6654AHLS8-2.048 is AEC-Q100 qualified for Grade H (–40°C to 125°C), as documented in the "ORDER INFORMATION" section under "AUTOMOTIVE PRODUCTS**" and confirmed by its inclusion in the LS8 package automotive ordering table with #PBF suffix.
What is the long-term drift specification for the LT6654AHLS8-2.048, and how is it expressed?
The LT6654AHLS8-2.048 has a long-term drift of 15ppm/√kHr, as specified in the Electrical Characteristics table on page 7 of the datasheet Rev. I. This logarithmic stability metric reflects typical aging behavior in the LS8 hermetic package and is measured under controlled conditions per Note 7.
LT6654AHLS8-2.048 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):
- 2.048V
- Voltage - Output (Max):
- -
- Current - Output:
- 10 mA
- Tolerance:
- ±0.05%
- Temperature Coefficient:
- 20ppm/°C
- Noise - 0.1Hz to 10Hz:
- 1ppmp-p
- Noise - 10Hz to 10kHz:
- 2ppmrms
- Voltage - Input:
- 2.548V ~ 36V
- Current - Supply:
- 600µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-CLCC (5x5)
LT6654AHLS8-2.048 FAQ
1.How can I place an order for LT6654AHLS8-2.048 through Aetrix?
Please submit a Request for Quotation (RFQ) for LT6654AHLS8-2.048 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 LT6654AHLS8-2.048 reliable?
The price and inventory of LT6654AHLS8-2.048 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT6654AHLS8-2.048 is usually 5 days.
3.What payment methods are accepted for LT6654AHLS8-2.048?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT6654AHLS8-2.048 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT6654AHLS8-2.048?
LT6654AHLS8-2.048 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT6654AHLS8-2.048 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 LT6654AHLS8-2.048?
For technical support, including LT6654AHLS8-2.048 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT6654AHLS8-2.048 requirements.
6.How does Aetrix verify that LT6654AHLS8-2.048 is sourced from the original manufacturer or authorized distributors?
All LT6654AHLS8-2.048 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 LT6654AHLS8-2.048 meets industry standards.
7.What is the process for return or replacement of LT6654AHLS8-2.048?
All LT6654AHLS8-2.048 units undergo pre-shipment inspection (PSI). If there is an issue with LT6654AHLS8-2.048, 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 LT6654AHLS8-2.048 part is unused and in its original packaging.
Return procedure for LT6654AHLS8-2.048:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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