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Analog Devices Inc. LT6656BIS6-2.5#TRMPBF
- Part No.:
- LT6656BIS6-2.5#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
LT6656BIS6-2.5#TRMPBF.pdf
- Description:
- IC VREF SERIES 0.1% TSOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:793
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Product details
Overview
LT6656BIS6-2.5#TRMPBF from Analog Devices is a B-grade precision series voltage reference in SOT-23-6 package, delivering 2.500V output with ±0.1% initial accuracy, 20ppm/°C max temperature drift, and ultralow 850nA supply current. It operates with dropout as low as 10mV and supports up to 5mA output drive, making it ideal for battery-powered ADC/DAC reference and supply in portable instrumentation.
For engineers reviewing the LT6656BIS6-2.5#TRMPBF datasheet, LT6656BIS6-2.5#TRMPBF pinout, LT6656BIS6-2.5#TRMPBF application, or LT6656BIS6-2.5#TRMPBF equivalent, key selection criteria include guaranteed –40°C to 85°C industrial temperature operation, 65ppm/mA load regulation, reverse input/output protection, and compatibility with ≥1µF output capacitance across ceramic/tantalum/electrolytic types.
Technical Context
The LT6656BIS6-2.5#TRMPBF uses 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 stability with wide ESR output capacitors (≤5Ω) and requires only 0.1µF input bypassing.
It features reverse input leakage ≤80µA at –18V and reverse output leakage ≤30µA at 18V, with functional operation confirmed from –55°C to 125°C despite full specification over –40°C to 85°C. Turn-on time is 30ms (0.1% settling) for the 2.5V option.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.500V ±0.1% (±2.5mV) at 25°C, enabling precise ADC/DAC biasing |
| Temp Coefficient | 20ppm/°C max (–40°C to 85°C), contributing ≤±0.5mV drift over full range |
| Supply Current | 0.85µA typical, reducing quiescent power to ~2.1µW at 2.5V output |
| Dropout Voltage | 10mV max at zero load, allowing operation with VIN as low as 2.51V |
| Load Regulation | 65ppm/mA (163ppm max at 5mA), limiting output shift to ±0.41mV under full load |
| Line Regulation | 40ppm/V (max), constraining output change to ±0.1mV per volt of VIN variation |
| Output Noise | 80µVRMS (10Hz–1kHz), suitable for 16-bit ADC reference applications |
Pinout & Package
LT6656BIS6-2.5#TRMPBF is housed in a 6-lead plastic TSOT-23 package (2mm × 2mm, 1mm height), with pin 1 marked and pin 2 as primary ground.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND* (Pin 1) | Internal ground connection | Must be tied to system ground; internal function not accessible externally |
| GND (Pin 2) | Device ground reference | Main return path for supply and output currents; connects to PCB ground plane |
| NC (Pin 3) | No internal connection | May be left floating or tied to GND/VIN/VOUT without affecting operation |
| VIN (Pin 4) | Power supply input | Accepts 2.51V–18V; requires 0.1µF bypass capacitor within 25mm of pin |
| NC (Pin 5) | No internal connection | Functionally identical to Pin 3; no electrical role in reference operation |
| VOUT (Pin 6) | Precision 2.5V output | Delivers regulated voltage; requires ≥1µF output capacitor for stability |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow supply current | 850nA typical enables multi-year battery life in gas monitors and remote sensors |
| Low dropout voltage | 10mV max allows direct use from single-cell Li-ion or coin-cell sources |
| Reverse input/output protection | Withstands –18V on VIN and +18V on VOUT without damage or latch-up |
| Industrial temperature grade | Specified –40°C to 85°C operation ensures reliability in outdoor and factory environments |
| Stable with wide ESR capacitors | Operates reliably with ceramic, tantalum, or electrolytic output caps ≤5Ω ESR |
Applications
| Portable Gas Monitors | Precision A/D Converters |
|---|---|
Use Scenario: Battery-powered handheld CO or O₂ detector requiring stable reference for electrochemical sensor signal conditioning. IC Role / Device Role / Timing Role: Provides 2.5V reference and supply rail for low-power op-amps and 16-bit SAR ADC. Use Value: 850nA quiescent current extends AA battery life beyond 5 years; 20ppm/°C drift maintains calibration accuracy across field temperature swings. | Use Scenario: High-resolution data acquisition module in industrial PLC analog input card. IC Role / Device Role / Timing Role: Serves as simultaneous reference and supply for ultra-low-power 24-bit delta-sigma ADC. Use Value: 65ppm/mA load regulation ensures <±0.5 LSB error at full-scale conversion; 1µF output cap compatibility simplifies layout. |
| Battery-Powered Systems | Micropower Remote Sensing |
Use Scenario: Solar-charged environmental sensor node measuring temperature/humidity with intermittent transmission. IC Role / Device Role / Timing Role: Supplies regulated 2.5V to MCU, sensor ICs, and RF transceiver during active measurement cycles. Use Value: Dropout of 10mV enables operation down to 2.51V input, maximizing usable battery voltage range; reverse protection prevents damage during polarity reversal in field wiring. | Use Scenario: Wireless structural health monitoring node embedded in bridges or pipelines. IC Role / Device Role / Timing Role: Precision reference for strain gauge Wheatstone bridge instrumentation amplifier. Use Value: 0.1% initial accuracy and low hysteresis (<70ppm) ensure repeatable measurements after thermal cycling in uncontrolled environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3425RTET | 2.5V, 0.05% initial accuracy, 12ppm/°C drift, 950nA supply current, SOT-23-6 | Higher accuracy and lower drift but higher supply current; no reverse protection | Select when tighter initial tolerance is required and reverse fault conditions are absent |
| ADR3425ARTZ-R7 | 2.5V, 0.1% initial accuracy, 20ppm/°C drift, 1.15µA supply current, SOT-23-6 | Same grade accuracy and drift, but higher supply current and no reverse protection | Select when board-level ESD/transient protection is already implemented externally |
Compared with REF3425RTET and ADR3425ARTZ-R7, the LT6656BIS6-2.5#TRMPBF offers unique reverse input/output protection and lower supply current, making it preferable in harsh or battery-constrained environments where fault resilience and micropower operation are critical.
Availability
LT6656BIS6-2.5#TRMPBF is available at Aetrix Electronics and suitable for portable gas monitors, precision A/D converters, and battery-powered systems requiring stable component supply with guaranteed industrial temperature performance.
Supply support for LT6656BIS6-2.5#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 semiconductor leader specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision measurement and control.
The LT6656 product line delivers ultralow-power, high-accuracy series voltage references for battery-operated instrumentation, portable medical devices, and industrial sensing where long-term stability and fault tolerance are essential.
FAQ
What is the maximum input voltage rating for LT6656BIS6-2.5#TRMPBF?
The absolute maximum input voltage for LT6656BIS6-2.5#TRMPBF is ±20V, with recommended operating range from 2.51V to 18V. Exceeding ±20V may cause permanent damage. The device includes reverse input protection, tolerating –18V on VIN while VOUT is grounded, with input reverse leakage limited to 80µA.
Does LT6656BIS6-2.5#TRMPBF require an external output capacitor, and what type is recommended?
Yes, LT6656BIS6-2.5#TRMPBF requires a minimum 1µF output capacitor for stability. It is designed to operate reliably with ceramic, tantalum, or aluminum electrolytic capacitors having ESR ≤5Ω. Unlike many references, it does not require low-ESR specialty capacitors, simplifying BOM and layout for cost-sensitive designs.
How does the load regulation specification of LT6656BIS6-2.5#TRMPBF impact ADC reference accuracy?
With 65ppm/mA load regulation, LT6656BIS6-2.5#TRMPBF introduces ≤±0.41mV output shift when sourcing its full 5mA load. For a 2.5V reference used with a 16-bit ADC (LSB = 38.1µV), this corresponds to <11 LSB error - well within typical system calibration margins and significantly better than shunt references under dynamic load conditions.
Can LT6656BIS6-2.5#TRMPBF be used in applications requiring operation below –40°C?
Yes, LT6656BIS6-2.5#TRMPBF is functional from –55°C to 125°C, though its full parametric specifications (e.g., 20ppm/°C drift, ±0.1% accuracy) are guaranteed only from –40°C to 85°C. At –55°C, output voltage remains stable and usable, but users should verify drift and hysteresis against system requirements for extreme-cold deployments.
What is the turn-on time specification for LT6656BIS6-2.5#TRMPBF, and how is it measured?
The turn-on time for LT6656BIS6-2.5#TRMPBF is 30ms to 0.1% settling with CL = 1µF. This is measured from application of VIN to the point where VOUT reaches and remains within ±2.5mV of 2.500V. The value reflects internal bandgap startup and error amplifier stabilization, and is independent of load current during the measurement.
LT6656BIS6-2.5#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):
- 2.5V
- 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:
- 80µVrms
- Voltage - Input:
- 3V ~ 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
LT6656BIS6-2.5#TRMPBF FAQ
1.How can I place an order for LT6656BIS6-2.5#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT6656BIS6-2.5#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 LT6656BIS6-2.5#TRMPBF reliable?
The price and inventory of LT6656BIS6-2.5#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT6656BIS6-2.5#TRMPBF is usually 5 days.
3.What payment methods are accepted for LT6656BIS6-2.5#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT6656BIS6-2.5#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT6656BIS6-2.5#TRMPBF?
LT6656BIS6-2.5#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT6656BIS6-2.5#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 LT6656BIS6-2.5#TRMPBF?
For technical support, including LT6656BIS6-2.5#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT6656BIS6-2.5#TRMPBF requirements.
6.How does Aetrix verify that LT6656BIS6-2.5#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LT6656BIS6-2.5#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 LT6656BIS6-2.5#TRMPBF meets industry standards.
7.What is the process for return or replacement of LT6656BIS6-2.5#TRMPBF?
All LT6656BIS6-2.5#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT6656BIS6-2.5#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 LT6656BIS6-2.5#TRMPBF part is unused and in its original packaging.
Return procedure for LT6656BIS6-2.5#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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