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Analog Devices Inc. LT6656BIS6-3#TRMPBF
- Part No.:
- LT6656BIS6-3#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
LT6656BIS6-3#TRMPBF.pdf
- Description:
- IC VREF SERIES 0.1% TSOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:5,236
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Product details
Overview
LT6656BIS6-3#TRMPBF from Analog Devices is a precision 3.0V series voltage reference in SOT-23-6 package, featuring 0.1% initial accuracy, 20ppm/°C max temperature drift, and ultralow 850nA supply current. It operates with dropout as low as 10mV and delivers up to 5mA output drive-ideal for battery-powered instrumentation, portable gas monitors, and low-power ADC/DAC reference and supply rails.
For engineers reviewing the LT6656BIS6-3#TRMPBF datasheet, LT6656BIS6-3#TRMPBF pinout, LT6656BIS6-3#TRMPBF application, or LT6656BIS6-3#TRMPBF equivalent, key selection criteria include guaranteed –40°C to 85°C industrial operation, reverse input/output protection, 1µF minimum stable output capacitance, and compatibility with 1.5V–18V supply range while maintaining sub-1µA quiescent draw.
Technical Context
The LT6656BIS6-3#TRMPBF employs a bandgap-based error amplifier architecture with class-B output stage, enabling both sourcing (up to 5mA) and limited sinking capability for transient recovery. Its design achieves <1µA supply current by minimizing bias currents while retaining stability across wide load and temperature ranges.
It features internal reverse polarity protection on both VIN and VOUT pins, supports operation down to 10mV headroom (VIN ≥ VOUT + 10mV), and maintains specified performance with output capacitors ≥1µF and ESR ≤5Ω-including ceramic, tantalum, and electrolytic types.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.000V ±0.1% (30mV absolute tolerance at 25°C) |
| Initial Accuracy | ±0.1% - enables direct use in 12-bit systems without calibration |
| Temp Drift | 20ppm/°C max - contributes ≤120ppm (0.036% of 3V) over –40°C to 85°C |
| Supply Current | 850nA typical - draws <1µW from 3.3V rail, extending battery life in multidecade deployments |
| Dropout Voltage | 10mV max at zero load - allows operation from 3.01V supply, critical for single-cell Li-ion or coin-cell systems |
| Output Drive | 5mA sourcing - sufficient to power SAR ADC reference inputs and supply local LDOs simultaneously |
| Load Regulation | 65ppm/mA - introduces ≤325ppm (0.0975% of 3V) error across full 5mA load swing |
Pinout & Package
LT6656BIS6-3#TRMPBF uses the 6-lead plastic TSOT-23 package (2mm × 2mm, 1mm height), with pin 1 marked and pin 2 as primary ground. The exposed pad is absent-this is not the DFN variant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND* (Pin 1) | Internal ground connection | Must be connected to system ground; ties internal substrate node for stability |
| GND (Pin 2) | Device ground reference | Main return path for output current and internal circuitry; lowest impedance ground node |
| NC (Pin 3) | No internal connection | May be left floating, tied to GND, VIN, or VOUT-no functional impact |
| VIN (Pin 4) | Power supply input | Accepts 1.5V–18V; requires 0.1µF bypass capacitor within 25mm of pin |
| NC (Pin 5) | No internal connection | Functionally identical to Pin 3; no routing constraints required |
| VOUT (Pin 6) | Precision 3.0V output | Requires ≥1µF output capacitor; stable with ESR ≤5Ω; drives loads directly |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow supply current | 850nA typical - enables >10-year operation on CR2032 coin cell in sleep-mode sensor nodes |
| Low dropout voltage | 10mV max - supports operation from depleted batteries or low-headroom regulators |
| Reverse input/output protection | Withstands ±18V reverse bias on VIN or VOUT - eliminates need for external diodes in harsh environments |
| Wide temperature specification | –40°C to 85°C industrial grade - qualified per AEC-Q200 stress profiles for reliability-critical applications |
| Stable with high-ESR capacitors | Operates with ESR up to 5Ω - compatible with low-cost aluminum electrolytic and polymer capacitors |
Applications
| Portable Gas Monitor | Battery-Powered Data Logger |
|---|---|
Use Scenario: Electrochemical gas sensor signal conditioning in handheld safety devices powered by single AA/AAA cells. IC Role / Device Role / Timing Role: Provides stable 3.0V reference for 16-bit sigma-delta ADC measuring sensor bridge output; also supplies bias to op-amp front-end. Use Value: Sub-1µA quiescent current extends runtime beyond 5 years on alkaline cells; 20ppm/°C drift ensures <0.1% gas concentration error across field temperature range. |
Use Scenario: Remote environmental monitoring node using LoRaWAN, operating intermittently on lithium-thionyl chloride primary battery. IC Role / Device Role / Timing Role: Supplies reference voltage and core supply to ultra-low-power microcontroller and ADC during brief active measurement windows. Use Value: 10mV dropout enables full utilization of battery's usable voltage range (3.6V → 3.01V); reverse protection prevents damage during battery replacement or polarity mishandling. |
| Precision Regulator Feedback | Micropower Remote Sensing |
Use Scenario: High-accuracy isolated DC-DC converter where secondary-side feedback must maintain ±0.2% output regulation over temperature and line. IC Role / Device Role / Timing Role: Generates precise 3.0V reference for optocoupler-driven error amplifier in flyback or forward topology. Use Value: 0.1% initial accuracy and 20ppm/°C drift minimize total output error budget; low noise (<140µVRMS, 10Hz–1kHz) avoids feedback loop instability. |
Use Scenario: Wireless strain gauge node deployed in structural health monitoring, powered by energy harvesting (piezo/solar). IC Role / Device Role / Timing Role: Reference source for ratiometric bridge measurement; powers instrumentation amplifier during short burst acquisition. Use Value: 850nA supply current matches micro-harvested power budgets; 1µF output cap requirement simplifies layout in space-constrained enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3330AIDBVR | 0.1% initial accuracy, 50ppm/°C drift, 3.9µA supply current, SOT-23-5 | Higher drift and 4.6× higher supply current limit use in multi-year battery apps | Choose when cost sensitivity outweighs long-term stability and ultra-low IQ requirements |
| ADR3430ARJZ-R7 | 0.1% initial accuracy, 10ppm/°C drift, 4.5µA supply current, SOT-23-5 | Lower drift but 5.3× higher IQ; no reverse protection; requires ≥10µF output cap | Prefer for high-stability lab equipment where power is not constrained and board space permits larger caps |
Compared with REF3330AIDBVR and ADR3430ARJZ-R7, the LT6656BIS6-3#TRMPBF delivers superior energy efficiency (850nA vs >4µA), integrated reverse protection, and lower dropout-making it uniquely suited for sealed, maintenance-free, decade-long deployments in remote sensing and portable instrumentation.
Availability
LT6656BIS6-3#TRMPBF is available at Aetrix Electronics and suitable for portable gas monitors, battery-powered data loggers, and precision regulator feedback circuits requiring stable component supply with guaranteed industrial temperature range and long-term availability.
Supply support for LT6656BIS6-3#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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets since 1965.
The LT6656 product line delivers micropower, high-accuracy voltage references optimized for battery-operated and energy-constrained systems-designed to replace legacy shunt references while reducing system power and PCB area.
FAQ
What is the maximum input voltage rating for the LT6656BIS6-3#TRMPBF?
The LT6656BIS6-3#TRMPBF has an absolute maximum input voltage rating of ±20V, with recommended operating range up to 18V. This rating applies regardless of output load or temperature, and includes tolerance for transient overvoltage events common in industrial environments. Exceeding ±20V may cause permanent damage.
Can the LT6656BIS6-3#TRMPBF operate with a 3.01V supply?
Yes-the LT6656BIS6-3#TRMPBF guarantees operation with only 10mV headroom (VIN ≥ VOUT + 10mV), so a 3.01V supply meets the minimum requirement at zero load. At 5mA load, dropout rises to 370mV max, requiring VIN ≥ 3.37V. Always verify minimum supply voltage versus load and temperature using Figure 18 in the datasheet.
Is external reverse polarity protection needed for the LT6656BIS6-3#TRMPBF?
No-reverse input and reverse output protection are built-in. The LT6656BIS6-3#TRMPBF withstands –18V on VIN (with VOUT = GND) and –18V on VOUT (with VIN = GND), eliminating the need for external series diodes or protection ICs. This reduces BOM count, board area, and forward voltage drop in battery-sensitive designs.
What output capacitor value and type are required for stable operation of the LT6656BIS6-3#TRMPBF?
The LT6656BIS6-3#TRMPBF requires a minimum 1µF output capacitor with ESR ≤5Ω. Ceramic (X7R/X5R), tantalum, and aluminum electrolytic capacitors all meet this specification. Stability is maintained across capacitor aging and temperature variation-no special low-ESR or polymer types are mandated.
How does the LT6656BIS6-3#TRMPBF compare to the A-grade version LT6656AIS6-3#TRMPBF?
The LT6656BIS6-3#TRMPBF offers 0.1% initial accuracy and 20ppm/°C max drift, while the A-grade LT6656AIS6-3#TRMPBF provides tighter 0.05% accuracy and 10ppm/°C drift. Both share identical pinout, package, supply current (850nA), dropout (10mV), and temperature range (–40°C to 85°C). Choose the B-grade for cost-sensitive industrial applications where ±0.1% tolerance is acceptable.
LT6656BIS6-3#TRMPBF 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):
- 3V
- Voltage - Output (Max):
- -
- Current - Output:
- 5 mA
- Tolerance:
- ±0.1%
- Temperature Coefficient:
- 20ppm/°C
- Noise - 0.1Hz to 10Hz:
- 30ppmp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 3.5V ~ 18V
- Current - Supply:
- 1.5µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-6
LT6656BIS6-3#TRMPBF FAQ
1.How can I place an order for LT6656BIS6-3#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT6656BIS6-3#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 LT6656BIS6-3#TRMPBF reliable?
The price and inventory of LT6656BIS6-3#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT6656BIS6-3#TRMPBF is usually 5 days.
3.What payment methods are accepted for LT6656BIS6-3#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT6656BIS6-3#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT6656BIS6-3#TRMPBF?
LT6656BIS6-3#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT6656BIS6-3#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 LT6656BIS6-3#TRMPBF?
For technical support, including LT6656BIS6-3#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT6656BIS6-3#TRMPBF requirements.
6.How does Aetrix verify that LT6656BIS6-3#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LT6656BIS6-3#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 LT6656BIS6-3#TRMPBF meets industry standards.
7.What is the process for return or replacement of LT6656BIS6-3#TRMPBF?
All LT6656BIS6-3#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT6656BIS6-3#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 LT6656BIS6-3#TRMPBF part is unused and in its original packaging.
Return procedure for LT6656BIS6-3#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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