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Analog Devices Inc. LTC6256IMS#PBF
- Part No.:
- LTC6256IMS#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC6256IMS#PBF.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:6,042
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Product details
Overview
LTC6256IMS#PBF from Analog Devices (formerly Linear Technology) is a dual rail-to-rail input/output operational amplifier optimized for micropower, low-noise, and wide supply voltage operation. It delivers 6.5MHz gain-bandwidth product, 4.5MHz –3dB bandwidth at unity gain, and only 65µA quiescent current per amplifier across 1.8V to 5.25V supplies - enabling precision signal conditioning in battery-powered instrumentation and automotive sensor interfaces.
For engineers reviewing the LTC6256IMS#PBF datasheet, LTC6256IMS#PBF pinout, LTC6256IMS#PBF application, or LTC6256IMS#PBF equivalent, key selection criteria include its C-Load™ capacitive-load drive capability (up to 100nF), 350µV max input offset voltage, shutdown function with 7µA max current, rail-to-rail I/O swing within 30mV of rails, and guaranteed operation from –40°C to 85°C in the MSOP-8 package.
Technical Context
The LTC6256IMS#PBF employs a dual-input PNP/NPN architecture that enables true rail-to-rail input operation - with seamless transition between input stages across the full common-mode range (–0.1V to VS + 0.1V). Its patented C-Load™ compensation maintains unity-gain stability even with 100nF capacitive loads, eliminating need for external isolation resistors.
It integrates active shutdown logic referenced to V–, with SHDN pin threshold at 0.6V above V– (disable) and 1.5V above V– (enable), delivering fast turn-on/turn-off times (50µs/20µs typical at 5V). The output stage uses a common-emitter buffer capable of sourcing/sinking >10mA while maintaining rail-to-rail swing and low distortion (0.0022% THD+N at 500Hz).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 6.5MHz - enables stable unity-gain amplification up to 4.5MHz, suitable for anti-aliasing filters and ADC front-ends. |
| Quiescent Current per Amp | 65µA - allows continuous operation for years on coin-cell batteries in portable medical or environmental sensors. |
| Input Offset Voltage | 350µV max - ensures <1 LSB error in 12-bit systems with 2V full-scale range, critical for precision instrumentation. |
| Supply Voltage Range | 1.8V to 5.25V - supports direct interface with Li-ion, LiPo, and 3.3V/5V logic without level-shifting. |
| CMRR / PSRR | 100dB / 100dB - rejects noise from shared power rails and common-mode interference in noisy automotive environments. |
| Shutdown Current | 7µA max - reduces system standby power by >90% versus active mode, essential for duty-cycled sensor nodes. |
| Capacitive Load Drive | 100nF (unity gain) - eliminates need for output isolation resistors when driving ADC input capacitance or long cables. |
Pinout & Package
Package: 8-Lead Plastic MSOP (3mm × 3mm × 1.1mm), exposed pad connected to V– for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUTA | Amplifier A output | Rail-to-rail output capable of sourcing/sinking ≥10mA; swings within 30mV of V+ or V– under load. |
| 2 - –INA | Inverting input of Amp A | Accepts common-mode voltage from V– – 0.1V to V+ + 0.1V; differential input protected by back-to-back diodes. |
| 3 - +INA | Non-inverting input of Amp A | Same voltage range as –INA; bias current ≤50nA over 0.2V–(VS–0.2V) range enables high-Z sensor interfacing. |
| 4 - V– | Negative supply rail | Typically ground; must be bypassed with 0.1µF capacitor; exposed pad soldered to PCB ground plane. |
| 5 - V+ | Positive supply rail | 1.8V–5.25V range; bypassed with 0.1µF capacitor; supports single-ended or split-supply configurations. |
| 6 - +INB | Non-inverting input of Amp B | Independent input stage identical to +INA; enables dual-channel signal conditioning without crosstalk. |
| 7 - –INB | Inverting input of Amp B | Identical specs to –INA; fully isolated from Amp A inputs except shared supply rails. |
| 8 - OUTB | Amplifier B output | Functionally identical to OUTA; allows independent gain/feedback networks for each channel. |
Key Features
| Feature | Design Value |
|---|---|
| C-Load™ capacitive-load drive | Stable with ≥100nF load at unity gain - eliminates external series resistor needed for most op amps driving ADCs or cables. |
| Rail-to-rail input and output | Input range extends 100mV beyond rails; output swings to within 30mV of V+ or V– - maximizes dynamic range in low-voltage systems. |
| Low input offset voltage | 350µV maximum - trimmed over temperature and common-mode range to minimize DC error in precision gain stages. |
| Active shutdown control | SHDN pin (not present on this MSOP variant) - note: LTC6256IMS#PBF has no SHDN pin; shutdown feature applies only to TSOT-23/DFN variants (e.g., LTC6256ITS8#TRPBF). |
| Low input bias current | 50nA max - enables use with high-impedance sources (e.g., pH electrodes, piezoresistive sensors) without significant voltage drop. |
| High PSRR/CMRR | 100dB PSRR and CMRR - maintains accuracy in systems with noisy digital supplies or varying common-mode voltages. |
Applications
| Micropower Active Filter | Portable Instrumentation |
|---|---|
Use Scenario: 2nd-order Sallen-Key low-pass filter in handheld gas analyzer with 3.3V supply and 10-year battery life requirement. IC Role / Device Role / Timing Role: Dual op amp provides both filter stages (gain = 1 and gain = 2) with matched AC response and ultra-low power consumption. Use Value: 65µA per amplifier enables filter operation at <130µA total, preserving battery capacity while maintaining 4.5MHz bandwidth for transient response fidelity. |
Use Scenario: Signal conditioning front-end for thermocouple and RTD measurements in field-deployable data logger. IC Role / Device Role / Timing Role: One amplifier buffers reference voltage; the other performs programmable-gain instrumentation amplification with rail-to-rail output swing. Use Value: 350µV max VOS and 100dB CMRR ensure <0.1°C measurement accuracy despite EMI from wireless telemetry modules. |
| Battery-Powered Sensor Node | Automotive Cabin Sensor Interface |
Use Scenario: Analog front-end for MEMS accelerometer and humidity sensor in Bluetooth LE wearable device. IC Role / Device Role / Timing Role: Dual channel conditions two independent sensor outputs with separate gain/offset calibration paths. Use Value: 1.8V minimum supply allows direct connection to buck-boost regulator output, avoiding LDO dropout losses and extending runtime. |
Use Scenario: Signal conditioning for CO₂ and particulate matter sensors in automotive HVAC control module. IC Role / Device Role / Timing Role: Amplifies low-level sensor outputs while rejecting engine-bay conducted noise on shared 5V rail. Use Value: 100dB PSRR prevents supply ripple from modulating sensor output, ensuring stable cabin air quality feedback control. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual rail-to-rail op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV9062IDR | Higher quiescent current (165µA vs 65µA); lower GBW (10MHz); no C-Load™ - requires RC isolation for >1nF loads. | Preferred where higher speed is needed but battery life is secondary; unsuitable for direct 100nF ADC drive. | Select TLV9062IDR only if >6MHz bandwidth is required and power budget allows 2.5× higher IQ. |
| AD8602ARMZ | Higher VOS (600µV max); higher IQ (110µA); no guaranteed 1.8V operation; lacks C-Load™ architecture. | Used in industrial PLC analog inputs where 5V supply is standard and capacitive loading is minimal. | Choose AD8602ARMZ only for legacy 5V designs requiring proven reliability over 20+ years; avoid for new 1.8–3.3V portable designs. |
Compared with TLV9062IDR and AD8602ARMZ, the LTC6256IMS#PBF uniquely combines sub-100µA quiescent current, 6.5MHz GBW, and robust 100nF capacitive-load drive - making it the only option among the three qualified for energy-constrained, high-fidelity sensor front-ends operating down to 1.8V.
Availability
LTC6256IMS#PBF is available at Aetrix Electronics and suitable for micropower active filters, portable instrumentation, and automotive cabin sensor interfaces requiring stable component supply across extended temperature ranges.
Supply support for LTC6256IMS#PBF 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, serving industrial, automotive, communications, and healthcare markets.
The LTC6255/LTC6256/LTC6257 family was designed specifically for ultra-low-power, precision signal conditioning in space- and energy-constrained applications - emphasizing rail-to-rail operation, capacitive-load resilience, and wide supply flexibility.
FAQ
What is the operating temperature range for the LTC6256IMS#PBF?
The LTC6256IMS#PBF is specified for operation from –40°C to +85°C (Industrial grade). This range is guaranteed and tested per the datasheet, making it suitable for automotive cabin electronics, industrial field instruments, and outdoor portable equipment where ambient temperatures vary widely. The "I" suffix in the part number explicitly denotes this Industrial temperature qualification.
Does the LTC6256IMS#PBF include a shutdown pin?
No, the LTC6256IMS#PBF does not include a shutdown pin. Shutdown functionality is only available on specific package variants of the LTC6256 - namely the TSOT-23 (e.g., LTC6256ITS8#TRPBF) and DFN (e.g., LTC6256IDC#TRPBF) packages. The MSOP-8 package (LTC6256IMS#PBF) omits the SHDN pin to maximize pin count for signal routing in dual-amplifier layouts.
Can the LTC6256IMS#PBF drive a 100nF capacitive load stably at unity gain?
Yes, the LTC6256IMS#PBF can drive a 100nF capacitive load stably at unity gain thanks to its proprietary C-Load™ compensation architecture. This is verified in the datasheet's Typical Performance Characteristics (Figure 625567 G31), which shows clean step response with no oscillation or excessive overshoot. No external isolation resistor is required - a key differentiator versus conventional rail-to-rail op amps.
What is the maximum output current capability of the LTC6256IMS#PBF?
The LTC6256IMS#PBF can source or sink up to 17mA (typical) into short-circuit conditions, with guaranteed minimum short-circuit current of 8mA per amplifier. Under normal linear operation with 10kΩ load, it delivers rail-to-rail swing with <30mV saturation voltage at ±1mA load - sufficient for driving ADC reference buffers, LED bias circuits, and multiplexer interfaces without external gain stages.
How does the input stage architecture of the LTC6256IMS#PBF enable rail-to-rail input operation?
The LTC6256IMS#PBF uses a composite PNP/NPN input stage that automatically transitions between transconductance cells based on common-mode voltage. The PNP pair operates near V–, the NPN pair near V+, and internal steering circuitry ensures seamless handoff - enabling continuous, low-distortion operation from V– – 0.1V to V+ + 0.1V without dead zones or increased bias current at the rails.
LTC6256IMS#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Last Time Buy
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- 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 (x2 Channels)
- 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:
- 10-MSOP
LTC6256IMS#PBF FAQ
1.How can I place an order for LTC6256IMS#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6256IMS#PBF 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 LTC6256IMS#PBF reliable?
The price and inventory of LTC6256IMS#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6256IMS#PBF is usually 5 days.
3.What payment methods are accepted for LTC6256IMS#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6256IMS#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6256IMS#PBF?
LTC6256IMS#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6256IMS#PBF 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 LTC6256IMS#PBF?
For technical support, including LTC6256IMS#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6256IMS#PBF requirements.
6.How does Aetrix verify that LTC6256IMS#PBF is sourced from the original manufacturer or authorized distributors?
All LTC6256IMS#PBF 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 LTC6256IMS#PBF meets industry standards.
7.What is the process for return or replacement of LTC6256IMS#PBF?
All LTC6256IMS#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6256IMS#PBF, 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 LTC6256IMS#PBF part is unused and in its original packaging.
Return procedure for LTC6256IMS#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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