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Analog Devices Inc. LT6650HS5#TRMPBF
- Part No.:
- LT6650HS5#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
LT6650HS5#TRMPBF.pdf
- Description:
- IC VREF SERIES 1.5% TSOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,289
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Product details
Overview
LT6650HS5#TRMPBF from Analog Devices (formerly Linear Technology) is a micropower, low-voltage 400mV series voltage reference with integrated rail-to-rail buffer amplifier in a 5-lead TSOT-23 package. It operates from 1.4V to 18V supply, draws only 5.6µA typical quiescent current, delivers ±200µA output drive, and maintains ±1.5% max accuracy over –40°C to 125°C - enabling precision sensing and ADC biasing in battery-powered industrial control systems.
For engineers reviewing the LT6650HS5#TRMPBF datasheet, LT6650HS5#TRMPBF pinout, LT6650HS5#TRMPBF application, or LT6650HS5#TRMPBF equivalent, key selection criteria include its guaranteed –40°C to 125°C operation, 30ppm/°C temperature coefficient, 400mV nominal output with post-package trimming, sink/source capability, and compatibility with ≥1µF output capacitance for stability.
Technical Context
The LT6650HS5#TRMPBF integrates a trimmed 400mV bandgap core with a unity-gain rail-to-rail output buffer, allowing direct use as a fixed reference or external resistor scaling to higher voltages up to VIN – 350mV. Its bipolar process enables robust operation at 1.4V supply and supports both series and shunt configurations.
It features internal ESD protection diodes on IN, OUT, and FB pins referenced to GND, permits indefinite short-circuit output, and guarantees stable operation with any ≥1µF output capacitor - eliminating need for specialized low-ESR ceramics in cost-sensitive designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 400mV nominal, ±1.5% max over –40°C to 125°C - ensures predictable ADC reference level across extended industrial temperature range |
| Supply Current | 5.6µA typical at 5V - enables multi-year operation from coin cells or energy-harvesting sources |
| Temperature Coefficient | 30ppm/°C max - limits drift to ≤3.6mV over full –40°C to 125°C range |
| Output Drive | ±200µA sourcing/sinking - supports direct driving of SAR ADC reference inputs and op-amp bias networks without external buffers |
| Line Regulation | 8.5mV max over 1.4V–18V input - maintains output stability despite battery discharge or unregulated supply variation |
| Load Regulation | ±2mV max over 0–200µA load - preserves accuracy under dynamic sensor excitation or multiplexed analog front-end loads |
| Operating Temperature | –40°C to 125°C - qualified for under-hood automotive sensors, motor drives, and industrial PLC modules |
Pinout & Package
LT6650HS5#TRMPBF uses a 5-lead TSOT-23 (S5) package, 1.0mm profile, JEDEC MO-193 compliant, with pin 1 marked by bevelled corner. Pin 3 (DNC) is internally connected for post-package trim and must remain unconnected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FB (Pin 1) | Feedback input | Connects to resistor divider midpoint to set scaled output voltage; bias current ≤30nA avoids gain error in high-R networks |
| GND (Pin 2) | Ground reference | Primary return path for supply, output, and feedback currents; requires low-impedance PCB connection |
| DNC (Pin 3) | Do Not Connect | Internally tied to trim circuitry; floating connection prevents calibration shift or instability |
| IN (Pin 4) | Positive supply input | Accepts 1.4V–18V; bypass with ≥1µF capacitor recommended to suppress supply noise coupling |
| OUT (Pin 5) | Reference output | Sources/sinks ±200µA; stable with ≥1µF capacitive load - enables use with standard bulk tantalum or aluminum electrolytics |
Key Features
| Feature | Design Value |
|---|---|
| Micropower operation | 5.6µA typical supply current enables >10-year battery life in wireless sensor nodes using CR2032 cells |
| Rail-to-rail buffer amplifier | Allows output scaling to any voltage from 400mV up to VIN – 350mV using two external resistors - eliminates need for discrete op-amps |
| Post-package trimming | Ensures ±1.5% max initial accuracy at 5V and ±1.5% max over –40°C to 125°C - reduces system calibration burden |
| Shunt-configurable operation | Supports both series and 2-terminal shunt modes (positive/negative) - reuses same BOM across multiple reference topologies |
| Robust absolute maximum ratings | Withstands 20V on IN/OUT/FB vs GND and indefinite output short-circuit - simplifies fault-tolerant design in harsh environments |
Applications
| Battery-Powered Precision Sensing | Industrial Temperature Monitoring |
|---|---|
|
Use Scenario: Low-power RTD or thermistor measurement in remote environmental sensors powered by Li-SOCl₂ batteries. IC Role / Device Role / Timing Role: Provides stable 400mV reference for delta-sigma ADC and excitation current source. Use Value: 5.6µA quiescent current extends 10-year field deployment; ±1.5% accuracy over –40°C to 125°C eliminates per-unit calibration. |
Use Scenario: High-accuracy temperature monitoring in motor drive inverters with ambient operating range –40°C to 125°C. IC Role / Device Role / Timing Role: Supplies reference voltage for isolated analog front-end measuring IGBT junction temperature via NTC network. Use Value: Guaranteed 30ppm/°C TC and 125°C rating ensure <±3.6mV drift across full thermal range - meets IEC 61800-3 Class A requirements. |
| Portable Medical Instrumentation | Programmable Logic Controller (PLC) Analog Input Modules |
|
Use Scenario: Handheld blood glucose meters requiring FDA-grade accuracy and multi-year shelf life. IC Role / Device Role / Timing Role: Serves as precision reference for 16-bit SAR ADC digitizing electrochemical sensor output. Use Value: ±200µA output drive directly interfaces ADC REF+ pin; 1µF stability margin allows low-cost ceramic capacitors instead of expensive film types. |
Use Scenario: DIN-rail mounted PLC modules converting 4–20mA field signals with 0.1% system accuracy target. IC Role / Device Role / Timing Role: Generates calibrated reference for programmable gain instrumentation amplifier and 24-bit sigma-delta ADC. Use Value: External resistor scaling enables single BOM to support 1V, 2.5V, and 5V reference variants; –40°C to 125°C rating covers cabinet temperature extremes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT1460ACS8#TRPBF | 0.075% max initial accuracy, 10ppm/°C TC, 6.5µA IQ, SO-8 package | Higher accuracy but larger SO-8 footprint and no sink capability | Select when tighter initial tolerance is required and board space allows SO-8; not suitable for sink-driven loads or SOT-23 layouts |
| REF3312AIDBVR | 1.2V output, 0.1% max accuracy, 50ppm/°C TC, 3.9µA IQ, SOT-23-5 | Fixed 1.2V output, lower IQ but higher TC and no sink capability | Select for ultra-low-power 1.2V reference needs where 400mV is not required; lacks bidirectional drive and extended temp range |
Compared with LT1460ACS8#TRPBF and REF3312AIDBVR, LT6650HS5#TRMPBF uniquely combines micropower operation, ±200µA sink/source, 400mV output, and –40°C to 125°C qualification in SOT-23 - making it the only option for compact, wide-temp, bidirectional reference designs.
Availability
LT6650HS5#TRMPBF is available at Aetrix Electronics and suitable for battery-powered instrumentation, industrial temperature monitoring, portable medical devices, and programmable logic controller analog input modules requiring stable component supply across extended temperature ranges.
Supply support for LT6650HS5#TRMPBF 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 acquired Linear Technology in 2017 and maintains its precision analog portfolio, including voltage references, op-amps, and power management ICs, with global manufacturing and quality systems certified to ISO 9001 and IATF 16949.
The LT6650HS5#TRMPBF belongs to Linear's micropower precision reference family, designed specifically for ultra-low-power, wide-temperature industrial and medical applications where accuracy, stability, and small size are critical.
FAQ
What is the guaranteed operating temperature range for LT6650HS5#TRMPBF?
The LT6650HS5#TRMPBF is specified for continuous operation from –40°C to 125°C, with all electrical parameters (including output voltage accuracy, temperature coefficient, and load regulation) guaranteed across this full range. This makes LT6650HS5#TRMPBF suitable for under-hood automotive, motor drive, and industrial control applications where ambient temperatures exceed 85°C.
Can LT6650HS5#TRMPBF be used as a shunt reference?
Yes, LT6650HS5#TRMPBF supports both series and shunt configurations. In shunt mode, it functions like a 2-terminal adjustable Zener: connect IN to VS (supply), OUT to VREF node, FB to GND (for negative reference) or to a resistor divider (for positive), and add external bias resistor RB. The LT6650HS5#TRMPBF sinks up to 200µA and sources up to 200µA, enabling bidirectional shunt operation.
What is the minimum output capacitance required for stability with LT6650HS5#TRMPBF?
LT6650HS5#TRMPBF requires a minimum 1µF output capacitance between OUT and GND for guaranteed stability across all operating conditions. This capacitance may be a single 1µF ceramic, tantalum, or aluminum electrolytic capacitor, or the aggregate of multiple decoupling capacitors already present on the board - no special low-ESR requirement applies.
How does the FB pin function in LT6650HS5#TRMPBF?
The FB pin on LT6650HS5#TRMPBF is the inverting input of the internal rail-to-rail buffer amplifier. When configured for scaled output, a resistor divider connects OUT to GND with its midpoint at FB. The LT6650HS5#TRMPBF regulates so that FB = 400mV, setting VOUT = 400mV × (1 + RF/RG). FB pin bias current is ≤30nA, minimizing gain error in high-resistance networks.
Is LT6650HS5#TRMPBF compatible with lead-free reflow processes?
Yes, LT6650HS5#TRMPBF carries the #TRMPBF suffix indicating lead-free, RoHS-compliant packaging and is qualified for standard Pb-free reflow profiles (J-STD-020, peak 260°C). The TSOT-23 package withstands soldering at 300°C for 10 seconds, and the device meets JEDEC moisture sensitivity level MSL-1 - no bake-out required prior to assembly.
LT6650HS5#TRMPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 0.4V
- Voltage - Output (Max):
- -
- Current - Output:
- 200 µA
- Tolerance:
- ±1.5%
- Temperature Coefficient:
- 30ppm/°C Typical
- Noise - 0.1Hz to 10Hz:
- 20µVp-p
- Noise - 10Hz to 10kHz:
- 23µVrms
- Voltage - Input:
- 1.4V ~ 18V
- Current - Supply:
- 15µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-5
LT6650HS5#TRMPBF FAQ
1.How can I place an order for LT6650HS5#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT6650HS5#TRMPBF 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 LT6650HS5#TRMPBF reliable?
The price and inventory of LT6650HS5#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT6650HS5#TRMPBF is usually 5 days.
3.What payment methods are accepted for LT6650HS5#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT6650HS5#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT6650HS5#TRMPBF?
LT6650HS5#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT6650HS5#TRMPBF 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 LT6650HS5#TRMPBF?
For technical support, including LT6650HS5#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT6650HS5#TRMPBF requirements.
6.How does Aetrix verify that LT6650HS5#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LT6650HS5#TRMPBF 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 LT6650HS5#TRMPBF meets industry standards.
7.What is the process for return or replacement of LT6650HS5#TRMPBF?
All LT6650HS5#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT6650HS5#TRMPBF, 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 LT6650HS5#TRMPBF part is unused and in its original packaging.
Return procedure for LT6650HS5#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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