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Analog Devices Inc. LTC6255IDC#TRMPBF
- Part No.:
- LTC6255IDC#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 6-WFDFN Exposed Pad
- Datasheet:
-
LTC6255IDC#TRMPBF.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 6DFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,358
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Product details
Overview
LTC6255IDC#TRMPBF from Analog Devices (formerly Linear Technology) is a single-channel, rail-to-rail input/output operational amplifier optimized for micropower precision signal conditioning in battery-powered and space-constrained systems. It delivers 6.5MHz gain-bandwidth product, 4.5MHz –3dB bandwidth at unity gain, 65µA quiescent current, 350µV max input offset voltage, and full operation from 1.8V to 5.25V supply - enabling high-accuracy sensor front-ends and low-voltage ADC drivers in portable instrumentation and automotive electronics.
For engineers reviewing the LTC6255IDC#TRMPBF datasheet, LTC6255IDC#TRMPBF pinout, LTC6255IDC#TRMPBF application, or LTC6255IDC#TRMPBF equivalent, key selection criteria include its C-Load™ capacitive-load drive capability (up to 100nF), shutdown current ≤7µA, rail-to-rail I/O swing within 30mV of rails, and guaranteed –40°C to +85°C industrial temperature range in the 6-lead 2mm × 2mm DFN package.
Technical Context
The LTC6255IDC#TRMPBF employs a dual-input PNP/NPN architecture that enables true rail-to-rail input common-mode range (V– –0.1V to V+ +0.1V) and seamless transition between input stages across the full supply range. Its patented C-Load™ compensation maintains stability with capacitive loads up to 100nF in unity-gain configuration without external compensation.
It integrates an active-low SHDN pin with 0.6V threshold referenced to V–, reducing supply current to ≤7µA while placing the output in high-impedance state - suitable for multiplexed analog signal paths. The output stage uses a common-emitter topology enabling rail-to-rail swing with <30mV saturation voltage at ±1mA load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 6.5MHz - enables stable closed-loop operation up to ~4.5MHz at AV = +1 for anti-aliasing filter design. |
| Quiescent Current | 65µA per amplifier - supports multi-year battery life in always-on sensor nodes operating from coin cells or energy harvesters. |
| Input Offset Voltage | ≤350µV - ensures <0.01% gain error in 3.3V full-scale precision measurement circuits without trimming. |
| Supply Voltage Range | 1.8V to 5.25V - interoperable with Li-ion, LiPo, alkaline, and regulated 3.3V/5V rails without level-shifting. |
| Capacitive Load Drive | Up to 100nF - eliminates need for isolation resistors when driving SAR ADC input capacitors or long PCB traces. |
| Shutdown Current | ≤7µA - reduces system standby power by >90% versus active mode, critical for duty-cycled data loggers. |
| Input Bias Current | ≤50nA - preserves accuracy in high-impedance pH, thermopile, or photodiode transimpedance applications. |
Pinout & Package
Package: 6-lead (2mm × 2mm × 0.8mm) plastic DFN with exposed pad connected to V–. Requires soldering exposed pad to PCB ground plane for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Positive supply rail | Accepts 1.8V–5.25V; requires local 0.1µF ceramic bypass to V– or ground. |
| SHDN | Active-low shutdown control | Pulled ≤0.6V above V– to disable; left open or tied to V+ for normal operation. |
| –IN | Inverting input | Supports common-mode range from V– –0.1V to V+ +0.1V; differential input voltage limited to ±3.6V. |
| OUT | Amplifier output | Rail-to-rail swing (within 30mV of V+ or V–); high-Z during shutdown. |
| V– | Negative supply rail | Typically grounded; exposed pad must be soldered to PCB V–/ground plane. |
| +IN | Non-inverting input | Same voltage range and protection as –IN; matched input capacitance (0.4pF diff / 0.3pF cm). |
Key Features
| Feature | Design Value |
|---|---|
| C-Load™ capacitive-load drive | Stable with ≥100nF load in unity-gain buffer configuration - eliminates external isolation resistor in ADC driver designs. |
| Rail-to-rail input and output | Input extends 100mV beyond rails; output swings to within 30mV of V+ or V– - maximizes dynamic range in low-voltage systems. |
| Low 1/f noise | 2.5µVP-P (0.1Hz–10Hz) - critical for DC-coupled precision measurements like strain gauge or thermocouple amplification. |
| High PSRR/CMRR | 100dB PSRR and CMRR - rejects supply ripple and common-mode interference in noisy automotive or industrial environments. |
| Industrial temperature grade | Guaranteed operation from –40°C to +85°C - qualified for under-hood automotive sensors and outdoor IoT deployments. |
Applications
| Micropower Active Filter | Portable Instrumentation |
|---|---|
Use Scenario: Second-order Sallen-Key low-pass filter in handheld multimeter front-end, operating from single 3.3V LiPo cell. IC Role / Device Role / Timing Role: Precision gain-setting and buffering stage with minimal power overhead and no external compensation. Use Value: Enables 10kHz cutoff with <0.1dB passband ripple and 65µA total op amp current - extending battery life to >12 months. | Use Scenario: Signal conditioning for MEMS accelerometer in battery-powered vibration monitor deployed on rotating machinery. IC Role / Device Role / Timing Role: Low-noise, rail-to-rail amplifier interfacing sensor to 16-bit SAR ADC sampling at 10kSPS. Use Value: Delivers 72.5dB SNR (per LTC2361 evaluation) with 540µA total system supply current at 125kSPS. |
| Battery-Powered Sensor Node | Automotive Cabin Monitoring |
Use Scenario: Thermistor-based temperature sensing in wireless environmental sensor node powered by CR2032 coin cell. IC Role / Device Role / Timing Role: Precision voltage follower driving 10-bit internal ADC of ultra-low-power MCU (e.g., MSP430FRxx). Use Value: 65µA quiescent current allows >5 years of operation at 1-sample-per-minute duty cycle. | Use Scenario: Occupancy detection using infrared pyroelectric sensor in automotive HVAC control module. IC Role / Device Role / Timing Role: High-impedance, low-bias-current amplifier for passive IR sensor output prior to window comparator. Use Value: ≤50nA input bias current prevents signal droop across MΩ-level sensor resistors over temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rail-to-rail, low-power op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV9001IDBVR | Lower GBW (1MHz), higher IQ (60µA), no shutdown, 36V max supply | Not suitable for 1.8V operation or capacitive-load-heavy ADC drivers | Select only if supply >3V and load capacitance <100pF; avoid for precision low-voltage designs. |
| OPA316IDBVR | Higher IQ (400µA), higher GBW (10MHz), no shutdown, 5.5V max supply | Exceeds power budget for battery longevity; better for speed-critical but line-powered apps | Choose when bandwidth >6MHz is required and power constraints are relaxed - not drop-in for LTC6255IDC#TRMPBF. |
Compared with TLV9001IDBVR and OPA316IDBVR, the LTC6255IDC#TRMPBF uniquely balances sub-100µA quiescent current, 6.5MHz GBW, integrated shutdown, and guaranteed 100nF capacitive-load stability - making it the only option meeting all four requirements simultaneously in industrial-grade DFN packaging.
Availability
LTC6255IDC#TRMPBF is available at Aetrix Electronics and suitable for portable instrumentation, battery-powered sensor nodes, and automotive cabin monitoring systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC6255IDC#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, Inc. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, formed through the acquisition of Linear Technology in 2017.
The LTC6255 family belongs to ADI's precision micropower op amp product line, engineered specifically for ultra-low-power, high-accuracy signal conditioning in energy-constrained and thermally sensitive applications - including medical wearables, IoT edge nodes, and automotive subsystems.
FAQ
What is the maximum capacitive load the LTC6255IDC#TRMPBF can drive stably in unity-gain configuration?
The LTC6255IDC#TRMPBF is specified to drive up to 100nF capacitive load stably in unity-gain configuration without external compensation, thanks to its proprietary C-Load™ architecture. This capability is verified across the full –40°C to +85°C temperature range and eliminates the need for series isolation resistors when interfacing with SAR ADC input capacitors or long PCB traces - a key differentiator versus standard micropower op amps.
Does the LTC6255IDC#TRMPBF support true ground-sensing input operation?
Yes, the LTC6255IDC#TRMPBF supports true ground-sensing: its input common-mode range extends to V– –0.1V, allowing operation with V– = 0V and inputs down to –0.1V. Combined with rail-to-rail output swing to within 30mV of V–, this enables accurate zero-crossing detection and single-supply sensor interfaces (e.g., bridge sensors referenced to ground) without level-shifting circuitry - a feature confirmed in the device's Absolute Maximum Ratings and Pin Functions sections.
What is the shutdown behavior of the LTC6255IDC#TRMPBF output stage?
When the SHDN pin is pulled ≤0.6V above V–, the LTC6255IDC#TRMPBF enters shutdown mode with supply current reduced to ≤7µA, and the output transitions to a high-impedance (high-Z) state. This behavior is explicitly documented in the Electrical Characteristics table and Applications Information section, making the LTC6255IDC#TRMPBF suitable for multiplexed analog signal routing where channel isolation is required during inactive periods.
Is the LTC6255IDC#TRMPBF pin-compatible with other members of the LTC6255/LTC6256/LTC6257 family?
No - the LTC6255IDC#TRMPBF uses a 6-lead DFN package, while LTC6256 (dual) and LTC6257 (quad) variants use 8-, 10-, or 16-lead packages. Even within the LTC6255 single-amplifier variants, the TSOT-23 (S6) and DFN (DC) packages have different pinouts: the DC package places SHDN on Pin 2, whereas the S6 package places SHDN on Pin 3. Therefore, board layout and schematic symbols must be selected specifically for the LTC6255IDC#TRMPBF footprint.
What is the typical input voltage noise density of the LTC6255IDC#TRMPBF at 1kHz?
The typical input voltage noise density of the LTC6255IDC#TRMPBF is 20nV/√Hz at 1kHz (measured at VS = 5V) and 21nV/√Hz at 1kHz (measured at VS = 1.8V), as specified in the 5V and 1.8V Electrical Characteristics tables. This low wideband noise, combined with 2.5µVP-P 0.1Hz–10Hz flicker noise, makes the LTC6255IDC#TRMPBF well-suited for precision DC and low-frequency AC signal amplification in sensor interfaces.
LTC6255IDC#TRMPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 6-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Last Time Buy
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 1.8V/µs
- Gain Bandwidth Product:
- 6.5 MHz
- -3db Bandwidth:
- 4.5 MHz
- Current - Input Bias:
- 5 nA
- Voltage - Input Offset:
- 100 µV
- Current - Supply:
- 65µA
- Current - Output / Channel:
- 35 mA
- Voltage - Supply Span (Min):
- 1.8 V
- Voltage - Supply Span (Max):
- 5.25 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-DFN (2x2)
LTC6255IDC#TRMPBF FAQ
1.How can I place an order for LTC6255IDC#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6255IDC#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 LTC6255IDC#TRMPBF reliable?
The price and inventory of LTC6255IDC#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6255IDC#TRMPBF is usually 5 days.
3.What payment methods are accepted for LTC6255IDC#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6255IDC#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6255IDC#TRMPBF?
LTC6255IDC#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6255IDC#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 LTC6255IDC#TRMPBF?
For technical support, including LTC6255IDC#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6255IDC#TRMPBF requirements.
6.How does Aetrix verify that LTC6255IDC#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LTC6255IDC#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 LTC6255IDC#TRMPBF meets industry standards.
7.What is the process for return or replacement of LTC6255IDC#TRMPBF?
All LTC6255IDC#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6255IDC#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 LTC6255IDC#TRMPBF part is unused and in its original packaging.
Return procedure for LTC6255IDC#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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