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Analog Devices Inc. LT6654AHS6-2.048#WTRPBF
- Part No.:
- LT6654AHS6-2.048#WTRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
LT6654AHS6-2.048#WTRPBF.pdf
- Description:
- IC VREF SERIES 0.05% TSOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:3,667
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Product details
Overview
LT6654AHS6-2.048#WTRPBF from Analog Devices is a precision 2.048V voltage reference IC with ±0.05% initial accuracy, 10ppm/°C max temperature drift, and 1.6ppmP-P (0.1Hz–10Hz) low-noise output. It delivers ±10mA output drive in a 6-lead TSOT-23 package, fully specified from –40°C to 125°C, and is AEC-Q100 qualified for automotive sensor signal conditioning and high-resolution ADC biasing.
For engineers reviewing the LT6654AHS6-2.048#WTRPBF datasheet, LT6654AHS6-2.048#WTRPBF pinout, LT6654AHS6-2.048#WTRPBF application, or LT6654AHS6-2.048#WTRPBF equivalent, key selection criteria include automotive-grade thermal stability, low dropout (100mV max), load regulation (8ppm/mA max sourcing), and compatibility with 1µF output capacitance for stable operation in harsh-environment data acquisition systems.
Technical Context
The LT6654AHS6-2.048#WTRPBF integrates a curvature-compensated bandgap core with a buffered output stage, enabling bidirectional ±10mA current capability-supporting both sourcing and sinking configurations without performance degradation. Its architecture ensures precise load regulation and low thermal hysteresis (40ppm over –40°C to 125°C in TSOT-23).
Designed for wide-supply operation up to 36V with only 100mV dropout, it maintains 5ppm/V line regulation and achieves 1.6ppmP-P noise in the 0.1Hz–10Hz band-critical for 16-bit+ SAR and delta-sigma ADC references where measurement uncertainty must be minimized.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.048V ±0.05% - matches common 12-bit DAC/ADC full-scale scaling (e.g., 2.048V = 1 LSB × 4096) |
| Initial Accuracy | ±0.05% max - eliminates need for system-level calibration in factory-trimmed industrial sensors |
| Temp Coefficient | 10ppm/°C max - ensures ≤1.23mV drift over –40°C to 125°C ambient range |
| Output Noise | 1.6ppmP-P (0.1Hz–10Hz) - contributes <3.3µVP-P error to 2.048V output, preserving ENOB in precision DAQ |
| Load Regulation | 8ppm/mA max (sourcing) - holds output within ±80ppm under 10mA load change, critical for multiplexed sensor front-ends |
| Dropout Voltage | 100mV max - enables operation from 2.148V supply, supporting low-voltage battery-powered instrumentation |
| Supply Range | 2.148V to 36V - accommodates wide-input industrial power rails and automotive 12V/24V systems |
Pinout & Package
LT6654AHS6-2.048#WTRPBF uses a 6-lead ThinSOT™ (TSOT-23) package (1.6mm × 2.9mm × 1.1mm), optimized for space-constrained automotive and industrial PCBs. Pin 1 and Pin 5 are DNC (Do Not Connect); Pin 2 is NC (Not Connected); Pins 3 and 4 are GND (star-ground connection required); Pin 6 is VOUT.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | DNC | Internally connected; external connection risks leakage-induced error or instability |
| Pin 2 | NC | No internal connection; may be floated, tied to GND, VIN, or VOUT per layout needs |
| Pin 3 | GND | Internal function ground; must connect near Pin 4 to minimize ground loop errors |
| Pin 4 | GND | Primary device ground; star-point for load and internal GND connections |
| Pin 5 | VOUT | Main output; requires ≥1µF ceramic capacitor to GND for stability and noise filtering |
| Pin 6 | VOUT | Secondary output; must be tied directly to Pin 5 for optimal load regulation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Qualified | Validated for automotive applications including engine control modules and ADAS sensor interfaces |
| Bidirectional Output Drive | ±10mA capability enables use as positive or negative reference without external circuitry |
| Low Thermal Hysteresis | 40ppm over –40°C to 125°C cycle - minimizes repeatability error in thermally cycled environments |
| Wide Supply Tolerance | Operates from 2.148V to 36V - supports direct connection to unregulated 12V/24V rails with minimal LDO overhead |
| Fast Turn-On Time | 150µs to 0.1% settling - enables power-gated operation in low-duty-cycle portable instrumentation |
Applications
| Automotive Engine Control Unit (ECU) | Industrial 4–20mA Transmitter |
|---|---|
Use Scenario: Providing stable 2.048V reference for analog-to-digital conversion of crankshaft position and oxygen sensor signals in under-hood ECU modules. IC Role / Device Role / Timing Role: Precision voltage reference for 12-bit/16-bit SAR ADCs sampling at ≤100kSPS in AEC-Q100-compliant signal chains. Use Value: 10ppm/°C drift and ±0.05% accuracy ensure <±2 LSB error over full automotive temperature range, eliminating recalibration during vehicle life. | Use Scenario: Biasing the DAC and op-amp stages in loop-powered 4–20mA current transmitters used in process control field instruments. IC Role / Device Role / Timing Role: Primary reference for 16-bit DAC generating precise current setpoints, operating from 12–36V loop supply. Use Value: 100mV dropout and 36V max input allow direct use of raw loop voltage; ±10mA drive supports active I/V conversion without buffer amplifiers. |
| Portable Medical Glucose Meter | High-Resolution Weigh Scale ADC |
Use Scenario: Supplying reference voltage to low-power 16-bit delta-sigma ADC measuring electrochemical sensor output in battery-operated glucose meters. IC Role / Device Role / Timing Role: Low-noise (1.6ppmP-P) reference for 2.048V full-scale ADC input, enabling sub-1mg/dL resolution. Use Value: 1.6ppmP-P noise translates to <3.3µVP-P error on 2.048V rail, preserving effective number of bits (ENOB) in ultra-low-power, single-supply designs. | Use Scenario: Reference for 24-bit delta-sigma ADC in platform scales requiring ±0.01% linearity and long-term stability across warehouse temperature swings. IC Role / Device Role / Timing Role: High-stability reference for strain gauge bridge excitation and ADC conversion in Class III legal-for-trade weighing systems. Use Value: 40ppm thermal hysteresis and 15ppm/√kHr long-term drift meet OIML R76 metrology requirements for annual calibration intervals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF5020IDR | 2.048V, ±0.05% initial accuracy, 3ppm/°C drift, but only –40°C to 125°C operation and no AEC-Q100 qualification | Lower drift suits lab-grade instrumentation; lacks automotive reliability validation and sink capability | Select REF5020IDR when ultra-low drift dominates over automotive compliance and bidirectional drive |
| ADR4520BRZ | 2.048V, ±0.02% initial accuracy, 2ppm/°C drift, but limited to ±1mA output drive and 12V max supply | Higher accuracy for metrology; insufficient drive for 4–20mA transmitter loads and incompatible with 24V industrial rails | Choose ADR4520BRZ for benchtop calibration equipment where supply voltage and load current are constrained |
Compared with REF5020IDR and ADR4520BRZ, the LT6654AHS6-2.048#WTRPBF uniquely combines AEC-Q100 qualification, ±10mA bidirectional drive, and 36V supply tolerance-making it the only option suitable for automotive and industrial 4–20mA transmitters requiring both robustness and high output current.
Availability
LT6654AHS6-2.048#WTRPBF is available at Aetrix Electronics and suitable for automotive engine control units, industrial 4–20mA transmitters, and portable medical glucose meters requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LT6654AHS6-2.048#WTRPBF 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 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 in harsh environments-including automotive under-hood sensing and high-resolution industrial data acquisition.
FAQ
What is the maximum operating temperature range for the LT6654AHS6-2.048#WTRPBF?
The LT6654AHS6-2.048#WTRPBF is fully specified from –40°C to 125°C and qualified per AEC-Q100 Grade 1 standards. This makes it suitable for under-hood automotive applications and high-temperature industrial environments where sustained operation above 105°C is required. The part's 10ppm/°C max drift and 40ppm thermal hysteresis are guaranteed across this full range.
Does the LT6654AHS6-2.048#WTRPBF support sinking current, and what is its sink capability?
Yes, the LT6654AHS6-2.048#WTRPBF supports bidirectional current flow and can sink up to –10mA while maintaining specified accuracy and regulation. Its ability to sink current enables use as a negative reference in dual-supply systems or as a precision current sink in active filter and biasing circuits-without requiring external components or compromising noise or drift performance.
What output capacitor value is required for stable operation of the LT6654AHS6-2.048#WTRPBF?
The LT6654AHS6-2.048#WTRPBF 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) are acceptable and improve low-frequency PSRR but increase turn-on time. The 1µF value balances stability, noise suppression, and 150µs settling time for most high-speed data acquisition applications.
Is the LT6654AHS6-2.048#WTRPBF pin-compatible with other members of the LT6654 family?
Yes, all LT6654 variants in the 6-lead TSOT-23 package-including LT6654AHS6-2.048#WTRPBF, LT6654AHS6-2.5#WTRPBF, and LT6654BHS6-3.3#WTRPBF-share identical pinout, footprint, and thermal characteristics. This allows drop-in replacement across output voltages and grades without PCB redesign, simplifying BOM rationalization and design reuse in multi-voltage reference systems.
How does the LT6654AHS6-2.048#WTRPBF achieve low noise performance in the 0.1Hz to 10Hz band?
The LT6654AHS6-2.048#WTRPBF achieves 1.6ppmP-P noise (0.1Hz–10Hz) through a combination of curvature-compensated bandgap core design, low-noise buffered output stage, and internal filtering optimized for flicker noise suppression. This specification is measured with a 1-pole high-pass filter at 0.1Hz and 2-pole low-pass at 10Hz in a shielded, still-air environment-ensuring reproducible, real-world performance in precision measurement circuits.
LT6654AHS6-2.048#WTRPBF 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):
- 2.048V
- Voltage - Output (Max):
- -
- Current - Output:
- 10 mA
- Tolerance:
- ±0.05%
- Temperature Coefficient:
- 10ppm/°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 (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-6
LT6654AHS6-2.048#WTRPBF FAQ
1.How can I place an order for LT6654AHS6-2.048#WTRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT6654AHS6-2.048#WTRPBF 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 LT6654AHS6-2.048#WTRPBF reliable?
The price and inventory of LT6654AHS6-2.048#WTRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT6654AHS6-2.048#WTRPBF is usually 5 days.
3.What payment methods are accepted for LT6654AHS6-2.048#WTRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT6654AHS6-2.048#WTRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT6654AHS6-2.048#WTRPBF?
LT6654AHS6-2.048#WTRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT6654AHS6-2.048#WTRPBF 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 LT6654AHS6-2.048#WTRPBF?
For technical support, including LT6654AHS6-2.048#WTRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT6654AHS6-2.048#WTRPBF requirements.
6.How does Aetrix verify that LT6654AHS6-2.048#WTRPBF is sourced from the original manufacturer or authorized distributors?
All LT6654AHS6-2.048#WTRPBF 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 LT6654AHS6-2.048#WTRPBF meets industry standards.
7.What is the process for return or replacement of LT6654AHS6-2.048#WTRPBF?
All LT6654AHS6-2.048#WTRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT6654AHS6-2.048#WTRPBF, 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 LT6654AHS6-2.048#WTRPBF part is unused and in its original packaging.
Return procedure for LT6654AHS6-2.048#WTRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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