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Analog Devices Inc. LT6654BMPS6-1.25#TRPBF
- Part No.:
- LT6654BMPS6-1.25#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
LT6654BMPS6-1.25#TRPBF.pdf
- Description:
- IC VREF SERIES 0.1% TSOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:4,747
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Product details
Overview
LT6654BMPS6-1.25#TRPBF from Analog Devices is a precision 1.25V 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 –55°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 requiring stable low-voltage references.
For engineers reviewing the LT6654BMPS6-1.25#TRPBF datasheet, LT6654BMPS6-1.25#TRPBF pinout, LT6654BMPS6-1.25#TRPBF application, or LT6654BMPS6-1.25#TRPBF equivalent, key selection criteria include its MP-grade extended temperature range, low 1.6ppmP-P (0.1Hz–10Hz) noise, 100mV max dropout, and ability to both source and sink current - critical for precision ADC biasing, sensor excitation, and dual-rail regulator feedback.
Technical Context
The LT6654BMPS6-1.25#TRPBF employs curvature-compensated bandgap architecture with internal buffering to deliver low-output-impedance regulation across ±10mA load currents. Its design integrates thermal hysteresis minimization (50ppm over –55°C to 125°C) and long-term stability of 60ppm/√kHr, enabling repeatable measurements in harsh environments.
Unlike basic shunt references, this device features active output stage topology that maintains tight load regulation (8ppm/mA sourcing, 20ppm/mA sinking) and line regulation (5ppm/V) even at VIN = VOUT + 0.5V, supporting operation near dropout in battery-powered instrumentation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.25V nominal; fixed precision reference for 12-bit+ SAR ADCs and low-voltage DACs. |
| Initial Accuracy | ±0.10% max; ensures ≤12.5mV absolute error at 25°C without calibration. |
| Temp Coefficient | 20ppm/°C max (B-grade); guarantees ≤2.5mV drift over –55°C to 125°C span. |
| Output Noise | 1.6ppmP-P (0.1Hz–10Hz); contributes <2µVP-P noise to 16-bit measurement systems. |
| Supply Range | 2.4V to 36V min-to-max; supports direct connection to 3.3V, 5V, 12V, or 24V rails. |
| Dropout Voltage | 100mV max at 10mA; enables stable 1.25V output from as low as 1.35V input. |
| Load Drive | ±10mA sourcing/sinking; eliminates need for external buffer in sensor bridge excitation. |
Pinout & Package
LT6654BMPS6-1.25#TRPBF uses a 6-lead Plastic TSOT-23 (S6) package, 2.9mm × 1.6mm × 1.1mm, with exposed pad for thermal performance. 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; must remain floating to avoid leakage-induced error. |
| Pin 2 | NC | No internal connection; may be left open or tied to GND/VIN/VOUT per layout needs. |
| Pin 3 | GND | Internal function ground; must connect near Pin 4 to minimize ground loop error. |
| Pin 4 | GND | Primary device ground; star-point for load and internal GND connections. |
| Pin 5 | VOUT | Main reference output; requires ≥1µF ceramic capacitor to GND for stability. |
| Pin 6 | VOUT | Secondary output terminal; tied to Pin 5 to ensure optimal load regulation. |
Key Features
| Feature | Design Value |
|---|---|
| MP-grade temperature range | –55°C to 125°C operation; qualified for downhole, engine bay, and military-grade embedded systems. |
| Source/sink capability | ±10mA bidirectional drive; enables single-reference use in ratiometric sensor circuits and negative rail generation. |
| Low 0.1Hz–10Hz noise | 1.6ppmP-P; reduces quantization uncertainty in precision weigh scales and medical ECG front-ends. |
| Hermetic-grade stability | 60ppm/√kHr long-term drift; ensures <0.01% reference shift over 10-year product lifetime. |
| AEC-Q100 compatibility | Qualified per automotive reliability standards; supports functional safety-critical subsystems. |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Temperature Transmitter |
|---|---|
Use Scenario: Providing stable 1.25V reference for cold-junction compensation in thermocouple signal conditioning within under-hood ECUs. IC Role / Device Role / Timing Role: Precision voltage reference for 24-bit ΣΔ ADC measuring thermocouple EMF against known cold-junction voltage. Use Value: Enables ±0.5°C measurement accuracy over –40°C to 150°C ambient, meeting ASAM MCD-2 MC requirements. | Use Scenario: Biasing RTD (PT100/1000) Wheatstone bridge in 4–20mA loop-powered temperature transmitters. IC Role / Device Role / Timing Role: Low-drift, low-noise excitation source for bridge circuitry operating at 125°C junction temperature. Use Value: Maintains <±0.1% bridge excitation stability over full temperature range, eliminating recalibration every 6 months. |
| Portable High-Resolution DMM | Medical Patient Monitor ADC Front-End |
Use Scenario: Reference for dual-slope or SAR ADC in handheld digital multimeters requiring 6½-digit resolution. IC Role / Device Role / Timing Role: Primary reference for auto-zeroed integrator and scaling amplifier stages. Use Value: 1.6ppmP-P noise and 20ppm/°C drift enable true 100ppm (0.01%) DC voltage measurement accuracy. | Use Scenario: Reference for 16-bit analog front-end in portable ECG/EEG patient monitors with battery operation. IC Role / Device Role / Timing Role: Low-power, low-noise reference for simultaneous multi-channel biopotential digitization. Use Value: ±10mA drive supports on-chip PGA gain switching without external buffers, reducing BOM count and board area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF5012IDR | 1.2V output, ±0.05% initial accuracy, 3ppm/°C drift, SOIC-8 package | Higher accuracy but narrower –40°C to 125°C range; no sink capability | Preferred when ultra-low drift dominates over temperature range and bidirectional drive. |
| ADR4512BARMZ | 1.2V output, ±0.02% initial accuracy, 2ppm/°C drift, MSOP-8 package | Lower noise (1.1ppmP-P) but only sources current; requires external sink path | Chosen for metrology-grade instruments where 0.02% accuracy justifies larger footprint and added components. |
Compared with REF5012IDR and ADR4512BARMZ, the LT6654BMPS6-1.25#TRPBF trades minor initial accuracy for guaranteed –55°C operation, ±10mA bidirectional drive, and compact TSOT-23 packaging - delivering superior system-level integration in space-constrained, wide-temperature industrial and automotive designs.
Availability
LT6654BMPS6-1.25#TRPBF is available at Aetrix Electronics and suitable for automotive engine control units, industrial temperature transmitters, and portable high-resolution DMMs requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LT6654BMPS6-1.25#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 healthcare markets.
The LT6654 family was designed for precision instrumentation and harsh-environment applications, emphasizing low drift, low noise, wide supply tolerance, and extended temperature operation - directly addressing needs in automotive sensors, downhole tools, and medical diagnostics equipment.
FAQ
What is the maximum input voltage for LT6654BMPS6-1.25#TRPBF?
The LT6654BMPS6-1.25#TRPBF supports an absolute maximum input voltage of 38V, with recommended operating range from 2.4V to 36V. At VIN = 2.4V, it delivers full 1.25V output with ≤0.1% regulation error, enabling compatibility with low-voltage Li-ion battery systems and 3.3V logic rails.
Does LT6654BMPS6-1.25#TRPBF support sinking current, and why does that matter?
Yes, LT6654BMPS6-1.25#TRPBF sinks up to 10mA, enabling use in negative reference configurations and ratiometric sensor bridges where current must flow into the reference pin. This eliminates external op-amp inverters in applications like 3-wire RTD interfaces, reducing cost and PCB area while maintaining accuracy.
How does the 20ppm/°C temperature coefficient of LT6654BMPS6-1.25#TRPBF impact 16-bit ADC performance?
Over a 180°C range (–55°C to 125°C), the 20ppm/°C drift causes ≤3.6mV total output variation. For a 16-bit ADC with 1.25V reference, this corresponds to ≤23 LSB error - well within typical system calibration budgets and significantly lower than uncalibrated alternatives.
Can LT6654BMPS6-1.25#TRPBF replace LT6654AMPS6-1.25#TRPBF in existing designs?
Yes, LT6654BMPS6-1.25#TRPBF is pin-compatible and shares identical package, pinout, and electrical interface with LT6654AMPS6-1.25#TRPBF. The primary difference is relaxed initial accuracy (±0.10% vs ±0.05%) and higher tempco (20ppm/°C vs 10ppm/°C), making it suitable for cost-sensitive applications where B-grade specs meet system requirements.
What output capacitor value is required for stable operation of LT6654BMPS6-1.25#TRPBF?
LT6654BMPS6-1.25#TRPBF requires a minimum 1µF ceramic capacitor from VOUT to GND for stability across all load conditions. Larger values (e.g., 10µF) reduce turn-on time and improve transient response but increase settling delay; 1µF represents the optimal balance for most precision measurement applications.
LT6654BMPS6-1.25#TRPBF 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):
- 1.25V
- Voltage - Output (Max):
- -
- Current - Output:
- 10 mA
- Tolerance:
- ±0.1%
- Temperature Coefficient:
- 20ppm/°C
- Noise - 0.1Hz to 10Hz:
- 0.8ppmp-p
- Noise - 10Hz to 10kHz:
- 2ppmrms
- Voltage - Input:
- 2.4V ~ 36V
- Current - Supply:
- 600µA
- Current - Cathode:
- -
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-6
LT6654BMPS6-1.25#TRPBF FAQ
1.How can I place an order for LT6654BMPS6-1.25#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT6654BMPS6-1.25#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 LT6654BMPS6-1.25#TRPBF reliable?
The price and inventory of LT6654BMPS6-1.25#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT6654BMPS6-1.25#TRPBF is usually 5 days.
3.What payment methods are accepted for LT6654BMPS6-1.25#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT6654BMPS6-1.25#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT6654BMPS6-1.25#TRPBF?
LT6654BMPS6-1.25#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT6654BMPS6-1.25#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 LT6654BMPS6-1.25#TRPBF?
For technical support, including LT6654BMPS6-1.25#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT6654BMPS6-1.25#TRPBF requirements.
6.How does Aetrix verify that LT6654BMPS6-1.25#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT6654BMPS6-1.25#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 LT6654BMPS6-1.25#TRPBF meets industry standards.
7.What is the process for return or replacement of LT6654BMPS6-1.25#TRPBF?
All LT6654BMPS6-1.25#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT6654BMPS6-1.25#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 LT6654BMPS6-1.25#TRPBF part is unused and in its original packaging.
Return procedure for LT6654BMPS6-1.25#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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