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Analog Devices Inc. LTC6256IMS8#PBF
- Part No.:
- LTC6256IMS8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC6256IMS8#PBF.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:208
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Product details
Overview
LTC6256IMS8#PBF from Analog Devices (formerly Linear Technology) is a dual, rail-to-rail input/output, micropower operational amplifier in an 8-lead MSOP package. It delivers 6.5MHz gain-bandwidth product, 4.5MHz –3dB bandwidth at unity gain, and ultra-low 65µA supply current per amplifier while operating from 1.8V to 5.25V. It features C-Load™ drive capability for stable operation with capacitive loads up to 100nF, making it ideal for battery-powered instrumentation and precision ADC driving.
For engineers reviewing the LTC6256IMS8#PBF datasheet, LTC6256IMS8#PBF pinout, LTC6256IMS8#PBF application, or LTC6256IMS8#PBF equivalent, key selection criteria include quiescent current vs. bandwidth trade-off, shutdown functionality (7µA max), rail-to-rail I/O swing within 30mV of rails, input offset voltage ≤350µV, and compatibility with low-voltage (1.8V) and automotive-grade (–40°C to 85°C) systems.
Technical Context
The LTC6256IMS8#PBF employs a dual-input PNP/NPN architecture that enables true rail-to-rail input operation across the full supply range (V– – 0.1V to V+ + 0.1V). Its internal bias current cancellation circuit maintains ≤50nA input bias current over 0.2V–0.2V below V+ and above V–, supporting high-impedance sensor interfaces.
It integrates active shutdown logic referenced to V–, with defined VIH = 1.5V and VIL = 0.6V (at 5V supply) and fast tON/tOFF (50µs/20µs). The output stage uses a common-emitter buffer enabling rail-to-rail swing and 10mA continuous output drive while maintaining stability into 100nF loads without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 6.5MHz - Enables stable unity-gain amplification up to 4.5MHz and higher closed-loop gains with predictable phase margin. |
| Supply Current per Amp | 65µA - Allows two-channel operation at <130µA total, suitable for multi-day battery life in portable medical or sensor nodes. |
| Input Offset Voltage | ≤350µV - Supports precision DC-coupled signal chains (e.g., thermocouple amps, strain gauge bridges) without trimming. |
| Rail-to-Rail I/O Swing | Within 30mV of V+ and V– - Maximizes dynamic range in low-voltage (1.8V) systems, preserving >95% of available headroom. |
| Capacitive Load Drive | Up to 100nF - Eliminates need for isolation resistors when driving ADC input caps or long PCB traces, reducing component count. |
| Shutdown Current | ≤7µA - Reduces system standby power by >90% versus active mode, critical for duty-cycled data acquisition. |
| CMRR / PSRR | 100dB / 100dB - Rejects noise from shared supply rails and common-mode interference in mixed-signal environments. |
Pinout & Package
Package: 8-Lead Plastic MSOP (3mm × 3mm × 1.1mm), exposed pad not connected (non-functional).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTA | Amplifier A output - rail-to-rail capable, drives 10mA, high-Z in shutdown. |
| 2 | –INA | Inverting input - accepts V– – 0.1V to V+ + 0.1V, supports ground-sensing. |
| 3 | +INA | Non-inverting input - same voltage range as –INA, matched input capacitance (0.4pF diff). |
| 4 | V– | Negative supply - typically GND; bypass with 0.1µF ceramic capacitor close to pin. |
| 5 | SHDNA | Active-low shutdown for Amp A - pulls to V– to disable; 0.6V threshold, 7µA shutdown current. |
| 6 | OUTB | Amplifier B output - independent rail-to-rail output, identical specs to OUTA. |
| 7 | –INB | Inverting input for Amp B - electrically isolated from Amp A, same input range and bias specs. |
| 8 | +INB | Non-inverting input for Amp B - matched to +INA, supports differential configurations. |
Key Features
| Feature | Design Value |
|---|---|
| C-Load™ Capacitive Drive | Stable unity-gain operation into 100nF loads without external compensation, enabling direct ADC interface. |
| 1.8V Operation | Full functionality at 1.8V supply - supports energy-harvesting and coin-cell powered systems. |
| Low Input Noise | 20nV/√Hz at 1kHz - preserves SNR in front-end amplification of µV-level sensor signals. |
| Shutdown Control | Dual independent SHDN pins (SHDNA/SHDNB) allow selective channel disabling to optimize power vs. latency. |
| High Temp Range | Specified from –40°C to +85°C - qualified for industrial and automotive cabin applications. |
Applications
| Micropower Active Filter | Portable Instrumentation |
|---|---|
Use Scenario: 2nd-order Sallen-Key low-pass filter in handheld gas analyzer with 3.3V Li-ion supply. IC Role / Device Role / Timing Role: Dual op-amp implements filter stages with matched GBW and low VOS to minimize passband distortion. Use Value: 65µA per amp extends battery life to >100 hours; rail-to-rail I/O maximizes filter dynamic range at 3.3V. | Use Scenario: Signal conditioning front-end for portable ECG monitor sampling at 250SPS. IC Role / Device Role / Timing Role: First-stage amplifier for electrode inputs, followed by ADC driver stage. Use Value: ≤350µV VOS ensures accurate baseline recovery; C-Load™ drives 10nF anti-aliasing cap without ringing. |
| Battery-Powered Sensor Node | Automotive Cabin Electronics |
Use Scenario: Temperature and humidity sensing node powered by CR2032 coin cell (3V). IC Role / Device Role / Timing Role: Amplifies RTD bridge output and buffers for 12-bit SAR ADC. Use Value: 1.8V min supply allows operation down to 2.2V battery voltage; shutdown reduces idle current to 7µA. | Use Scenario: Occupancy detection signal conditioner in automotive seat control module. IC Role / Device Role / Timing Role: Amplifies piezoelectric sensor output and provides level-shifted reference for MCU ADC. Use Value: –40°C to +85°C rating ensures reliability in cabin temperature extremes; 100dB PSRR rejects ignition noise. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual micropower op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV9002IDR | Lower GBW (1MHz), higher supply current (60µA per amp), no shutdown, 1.2V min supply. | Not suitable for 4.5MHz bandwidth or shutdown-controlled systems; better for ultra-low-voltage (1.2V) designs. | Select TLV9002IDR only if bandwidth demand <1MHz and shutdown is unnecessary. |
| OPA2333AIDR | Zero-drift architecture, 350nV max VOS, 17µA supply current, no shutdown, 1.8V min supply. | Superior DC precision but lower bandwidth (350kHz); unsuitable for >100kHz AC-coupled signal paths. | Choose OPA2333AIDR for µV-level DC accuracy where bandwidth <350kHz suffices. |
Compared with TLV9002IDR and OPA2333AIDR, the LTC6256IMS8#PBF uniquely balances 6.5MHz bandwidth, 65µA supply current, integrated shutdown, and rail-to-rail I/O in a single 8-pin MSOP - making it optimal for battery-powered instrumentation requiring both speed and precision.
Availability
LTC6256IMS8#PBF is available at Aetrix Electronics and suitable for portable instrumentation, battery-powered sensor nodes, and automotive cabin electronics requiring stable component supply across extended temperature ranges.
Supply support for LTC6256IMS8#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 semiconductors, formed through the acquisition of Linear Technology in 2017.
The LTC6255/LTC6256/LTC6257 family was designed specifically for ultra-low-power, high-precision signal conditioning in space- and energy-constrained applications such as portable medical devices and IoT edge sensors.
FAQ
What is the maximum capacitive load the LTC6256IMS8#PBF can drive stably in unity-gain configuration?
The LTC6256IMS8#PBF can drive up to 100nF capacitive loads stably in unity-gain configuration without external compensation, thanks to its C-Load™ architecture. This capability is verified in the Typical Performance Characteristics section (Figure G31) and eliminates the need for isolation resistors when interfacing with ADC input capacitors or long PCB traces.
Does the LTC6256IMS8#PBF support true ground-sensing input operation?
Yes, the LTC6256IMS8#PBF supports true ground-sensing: its input common-mode range extends to V– – 0.1V, allowing operation with inputs at 0V when V– = 0V (GND). This is confirmed in the Pin Functions section and enables direct interfacing with grounded sensors like thermistors or bridge transducers without level-shifting circuitry.
What is the guaranteed operating temperature range for the LTC6256IMS8#PBF?
The LTC6256IMS8#PBF is specified for operation from –40°C to +85°C (Industrial grade). This is explicitly stated in the Order Information table and Absolute Maximum Ratings section, confirming suitability for industrial control and automotive cabin environments.
How does the shutdown function work on the LTC6256IMS8#PBF?
The LTC6256IMS8#PBF has two independent active-low shutdown pins: SHDNA (Pin 5) and SHDNB (Pin 8). Pulling either pin ≤0.6V relative to V– disables its respective amplifier, reducing supply current to ≤7µA. During shutdown, the corresponding output enters a high-impedance state, supporting multiplexer or shared-bus applications.
Can the LTC6256IMS8#PBF operate from a 1.8V single supply?
Yes, the LTC6256IMS8#PBF is fully specified for 1.8V single-supply operation, with all key parameters (GBW, VOS, IS, CMRR) guaranteed across the –40°C to +85°C range at VS = 1.8V. This is documented in the "1.8V Electrical Characteristics" tables and enables use in energy-harvesting and coin-cell-powered systems.
LTC6256IMS8#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-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:
- 8-MSOP
LTC6256IMS8#PBF FAQ
1.How can I place an order for LTC6256IMS8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6256IMS8#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 LTC6256IMS8#PBF reliable?
The price and inventory of LTC6256IMS8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6256IMS8#PBF is usually 5 days.
3.What payment methods are accepted for LTC6256IMS8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6256IMS8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6256IMS8#PBF?
LTC6256IMS8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6256IMS8#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 LTC6256IMS8#PBF?
For technical support, including LTC6256IMS8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6256IMS8#PBF requirements.
6.How does Aetrix verify that LTC6256IMS8#PBF is sourced from the original manufacturer or authorized distributors?
All LTC6256IMS8#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 LTC6256IMS8#PBF meets industry standards.
7.What is the process for return or replacement of LTC6256IMS8#PBF?
All LTC6256IMS8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6256IMS8#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 LTC6256IMS8#PBF part is unused and in its original packaging.
Return procedure for LTC6256IMS8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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