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Analog Devices Inc. LT6654BXMS8-2.5#TRPBF
- Part No.:
- LT6654BXMS8-2.5#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LT6654BXMS8-2.5#TRPBF.pdf
- Description:
- IC VREF SERIESV 0.1% 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,449
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Product details
Overview
LT6654BXMS8-2.5#TRPBF from Analog Devices is a 2.5V precision voltage reference rated for continuous operation up to 175°C junction temperature, featuring ±0.10% initial accuracy, 20ppm/°C max temperature coefficient over –40°C to 175°C, and 1.5ppmP-P low-frequency noise (0.1Hz–10Hz). It sources 3mA and sinks 10mA at 175°C, with 120mV max dropout voltage, enabling use in high-temperature down-hole instrumentation and avionics power monitoring circuits.
For engineers reviewing the LT6654BXMS8-2.5#TRPBF datasheet, LT6654BXMS8-2.5#TRPBF pinout, LT6654BXMS8-2.5#TRPBF application, or LT6654BXMS8-2.5#TRPBF equivalent, key selection criteria include guaranteed 175°C operation, buffered bidirectional output current capability, thermal hysteresis ≤30ppm, long-term drift of 50ppm/√kHr, and MSOP-8 package compatibility with high-reliability PCB layouts.
Technical Context
The LT6654BXMS8-2.5#TRPBF employs a bandgap-based core with internal buffering to deliver stable 2.5V output across extreme temperatures. Its architecture supports both sourcing and sinking operation without external components, eliminating need for discrete pass transistors in negative-reference configurations.
It operates from 2.5V + 0.5V to 36V input, maintains load regulation ≤50ppm/mA (sourcing) and ≤80ppm/mA (sinking) at 175°C, and exhibits no thermal shutdown-enabling uninterrupted function in sustained high-temperature environments where conventional references fail.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.5V nominal, ±0.10% initial accuracy ensures ≤±2.5mV absolute error at 25°C for ADC/DAC biasing. |
| Temp Coefficient | 20ppm/°C max (–40°C to 175°C) limits drift to ≤2.75mV over full range-critical for oil/gas sensor calibration. |
| Noise (0.1–10Hz) | 1.5ppmP-P = 3.75µVP-P enables sub-16-bit measurement integrity in high-resolution data acquisition. |
| Output Current | Sources 3mA / sinks 10mA at 175°C-supports direct driving of op-amp inputs or low-power ADC references. |
| Dropout Voltage | 120mV max at 175°C allows operation with VIN as low as 2.62V, simplifying low-headroom supply designs. |
| Thermal Hysteresis | 30ppm over –40°C ↔ 175°C cycling minimizes recalibration needs in cyclic thermal environments. |
| Long-Term Drift | 50ppm/√kHr predicts <100ppm shift after 4,000 hours-essential for unattended field-deployed systems. |
Pinout & Package
The LT6654BXMS8-2.5#TRPBF is housed in an 8-lead MSOP (MS8) package with exposed pad not connected internally; thermal resistance θJA = 163°C/W. Pin 4 serves as primary ground reference point; star grounding of Pin 3 (internal GND) and load ground to Pin 4 is mandatory for specified load regulation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DNC (1,7) | Do Not Connect | Must be isolated from all nets; encircling with VOUT guard ring prevents leakage-induced error. |
| NC (2,5) | Not Connected | May be tied to VIN/VOUT/GND or left floating-no electrical impact on performance. |
| GND (3) | Internal Ground | Must connect to Pin 4 via shortest possible trace to avoid ground loop errors in precision sensing. |
| GND (4) | Primary Device Ground | Star connection point for all system grounds; determines reference stability and load regulation accuracy. |
| VOUT (6) | Regulated Output | Requires ≥1µF ceramic capacitor to GND; output impedance <1Ω below 1kHz ensures fast transient response. |
| VIN (8) | Power Input | Accepts 2.5V+0.5V to 36V; bypass with ≥0.1µF capacitor to GND essential for PSRR >70dB at 100Hz. |
Key Features
| Feature | Design Value |
|---|---|
| 175°C Junction Rating | Guaranteed functional operation at 175°C-enables deployment in down-hole drilling tools without derating. |
| Bidirectional Output Drive | Sinks 10mA while maintaining 2.5V accuracy-allows direct negative reference generation without external PNP. |
| Low Thermal Hysteresis | 30ppm over –40°C ↔ 175°C cycle-reduces calibration drift in avionics systems experiencing rapid ambient swings. |
| No Thermal Shutdown | Continuous conduction at 175°C eliminates output interruption during thermal transients in industrial controllers. |
| High PSRR | ≥70dB at 100Hz-rejects switching noise from DC/DC converters powering high-temp sensor signal chains. |
Applications
| Oil & Gas Down-Hole Instrumentation | Avionics Power Monitoring |
|---|---|
Use Scenario: Pressure/temperature sensors operating at 150–175°C inside drill string telemetry modules. IC Role / Device Role / Timing Role: Precision 2.5V reference for 24-bit sigma-delta ADCs digitizing strain gauge outputs. Use Value: 20ppm/°C tempco and 30ppm hysteresis ensure <0.01% full-scale error over 20-year well life without recalibration. | Use Scenario: Engine control unit (ECU) monitoring 28V aircraft bus voltage with ±0.1% accuracy requirement. IC Role / Device Role / Timing Role: Stable reference for dual-slope integrator measuring bus ripple under 175°C ambient conditions. Use Value: 1.5ppmP-P noise and 50ppm/√kHr long-term drift maintain compliance with DO-160E Section 22 thermal shock testing. |
| Heavy Industrial Motor Drives | High-Temperature Automotive Sensors |
Use Scenario: Isolated current sensing in 3-phase inverters mounted near 150°C IGBT heatsinks. IC Role / Device Role / Timing Role: Reference for isolated amplifier feedback path in analog front-end of motor phase current measurement. Use Value: Sinking 10mA capability enables direct interface with optocoupler LED drivers without additional transistors. | Use Scenario: Exhaust gas recirculation (EGR) valve position sensing in turbocharged engines reaching 160°C under hood. IC Role / Device Role / Timing Role: Bias voltage source for MEMS pressure transducer signal conditioning ASIC. Use Value: 120mV dropout allows operation from local 3.3V LDO even when input drops to 2.62V during cold cranking. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR225TRZ-EP | 2.5V, 10ppm/°C max, 30µA supply current, 175°C rated-but only sinks 1mA (vs 10mA), no sourcing capability. | Best for ultra-low-power sensor nodes where sink-only operation suffices; unsuitable for bidirectional reference circuits. | Select ADR225TRZ-EP only when supply current <50µA is mandatory and output drive requirements are ≤1mA sink. |
| LT6657IMS8-2.5#PBF | 2.5V, 1.5ppm/°C max, 40V supply, but rated only to 125°C-not qualified for 175°C operation. | Preferred for high-precision lab equipment or telecom infrastructure where temperature stays <125°C. | Choose LT6657IMS8-2.5#PBF when ultra-low tempco (<2ppm total over range) is critical and ambient never exceeds 125°C. |
Compared with ADR225TRZ-EP and LT6657IMS8-2.5#PBF, the LT6654BXMS8-2.5#TRPBF uniquely combines 175°C operation, bidirectional 3mA/10mA drive, and 20ppm/°C tempco-making it the sole option for high-current, high-temperature reference applications requiring both sourcing and sinking.
Availability
LT6654BXMS8-2.5#TRPBF is available at Aetrix Electronics and suitable for oil & gas exploration, avionics power monitoring, and heavy industrial motor drives requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for LT6654BXMS8-2.5#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, serving industrial, automotive, communications, and aerospace markets.
The LT6654 family was designed specifically for high-temperature precision reference applications-including down-hole drilling, avionics, and industrial control-where standard references fail due to thermal drift, hysteresis, or shutdown behavior.
FAQ
What is the maximum junction temperature rating for the LT6654BXMS8-2.5#TRPBF?
The LT6654BXMS8-2.5#TRPBF is fully specified and 100% tested at 175°C junction temperature, with operational capability confirmed from –40°C to 175°C. It contains no thermal shutdown circuitry, allowing continuous conduction at this maximum rating-unlike most commercial-grade references that limit operation to 125°C.
Can the LT6654BXMS8-2.5#TRPBF be used as a negative voltage reference?
Yes-the LT6654BXMS8-2.5#TRPBF can operate as a –2.5V reference by connecting VIN to a positive bias voltage and grounding VOUT, leveraging its ability to sink 10mA while maintaining full 2.5V accuracy and temperature coefficient. This configuration requires current-limiting resistor R1 and 1µF output capacitor per Figure 12 in the datasheet.
What are the required external capacitors for stable operation of the LT6654BXMS8-2.5#TRPBF?
The LT6654BXMS8-2.5#TRPBF requires a minimum 0.1µF ceramic capacitor from VIN to GND and a minimum 1µF ceramic capacitor from VOUT to GND. Larger values (e.g., 10µF) improve PSRR and transient response but increase turn-on time; 1µF is optimal for most high-temperature applications balancing stability and speed.
How does the LT6654BXMS8-2.5#TRPBF handle load regulation at elevated temperatures?
At 175°C, the LT6654BXMS8-2.5#TRPBF maintains load regulation of ≤50ppm/mA when sourcing up to 3mA and ≤80ppm/mA when sinking up to 10mA. These values are measured on a pulse basis to exclude die self-heating effects, ensuring predictable performance in dynamic current-sensing applications.
Is the LT6654BXMS8-2.5#TRPBF compatible with lead-free reflow processes?
Yes-the LT6654BXMS8-2.5#TRPBF is qualified for lead-free reflow with peak temperatures up to 260°C. Testing shows mean output voltage shift of –0.004% (–100ppm) after three reflow cycles, with standard deviation remaining within 0.03%-well within its ±0.10% initial accuracy specification.
LT6654BXMS8-2.5#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- 36V
- Current - Supply:
- 600µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP
LT6654BXMS8-2.5#TRPBF FAQ
1.How can I place an order for LT6654BXMS8-2.5#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT6654BXMS8-2.5#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 LT6654BXMS8-2.5#TRPBF reliable?
The price and inventory of LT6654BXMS8-2.5#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT6654BXMS8-2.5#TRPBF is usually 5 days.
3.What payment methods are accepted for LT6654BXMS8-2.5#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT6654BXMS8-2.5#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT6654BXMS8-2.5#TRPBF?
LT6654BXMS8-2.5#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT6654BXMS8-2.5#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 LT6654BXMS8-2.5#TRPBF?
For technical support, including LT6654BXMS8-2.5#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT6654BXMS8-2.5#TRPBF requirements.
6.How does Aetrix verify that LT6654BXMS8-2.5#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT6654BXMS8-2.5#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 LT6654BXMS8-2.5#TRPBF meets industry standards.
7.What is the process for return or replacement of LT6654BXMS8-2.5#TRPBF?
All LT6654BXMS8-2.5#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT6654BXMS8-2.5#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 LT6654BXMS8-2.5#TRPBF part is unused and in its original packaging.
Return procedure for LT6654BXMS8-2.5#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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