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Analog Devices Inc. LTC6256CMS8#PBF
- Part No.:
- LTC6256CMS8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC6256CMS8#PBF.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,522
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Product details
Overview
LTC6256CMS8#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 drives capacitive loads up to 100nF without external compensation and is used in battery-powered instrumentation and automotive sensor signal conditioning.
For engineers reviewing the LTC6256CMS8#PBF datasheet, LTC6256CMS8#PBF pinout, LTC6256CMS8#PBF application, or LTC6256CMS8#PBF equivalent, key selection criteria include its 350µV max offset voltage, 100dB CMRR/PSRR, shutdown capability (7µA), and verified C-Load™ stability with full rail-to-rail swing - critical for precision low-power analog front-ends in portable and automotive systems.
Technical Context
The LTC6256CMS8#PBF employs a dual-input PNP/NPN architecture enabling rail-to-rail input operation across the full 1.8V–5.25V supply range, with input voltage range extending 100mV beyond both rails. Its patented C-Load™ output stage uses a common-emitter buffer with specialized compensation to maintain unity-gain stability into 100nF capacitive loads.
It features active bias current cancellation that holds input bias current ≤50nA over 0.2V–(V+–0.2V) common-mode range, and integrated shutdown logic with 0.6V threshold referenced to V–, enabling low-leakage (≤400nA) high-impedance output state during sleep mode.
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. |
| Supply Current per Amp | 65µA max - supports >1-year battery life in coin-cell-powered sensors with 10s of µA average system current. |
| Input Offset Voltage | 350µV max - ensures ≤0.035% error in 1V full-scale 12-bit ADC driver applications without trimming. |
| Rail-to-Rail I/O | Swings within 30mV of V– and V+ - eliminates level-shifting circuitry in single-supply 3.3V/5V data acquisition systems. |
| Capacitive Load Drive | Stable with 100nF load at AV = +1 - allows direct connection to ADC input capacitors or long PCB traces without isolation resistors. |
| Shutdown Current | 7µA max - reduces total system standby power by >90% vs active mode in duty-cycled measurement systems. |
| CMRR / PSRR | 100dB / 100dB - rejects >100,000:1 common-mode noise and supply ripple in noisy automotive or industrial environments. |
Pinout & Package
Package: 8-Lead Plastic MSOP (MS8), 3mm × 3mm × 1.1mm body, exposed pad not connected (non-functional).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTA | Amplifier A output - rail-to-rail capable, sinks/sources ≥10mA, high-impedance in shutdown. |
| 2 | –INA | Inverting input of Amp A - accepts V– –0.1V to V+ +0.1V; protected by back-to-back diodes. |
| 3 | +INA | Non-inverting input of Amp A - identical voltage range and protection as –INA. |
| 4 | V– | Negative supply rail - typically ground; must be bypassed with 0.1µF capacitor near pin. |
| 5 | V+ | Positive supply rail - 1.8V to 5.25V; bypass with 0.1µF capacitor near pin. |
| 6 | +INB | Non-inverting input of Amp B - electrically isolated from Amp A; same specs as +INA. |
| 7 | –INB | Inverting input of Amp B - same voltage range, protection, and bias behavior as –INA. |
| 8 | OUTB | Amplifier B output - independent of OUTA; shares same drive strength and shutdown behavior. |
Key Features
| Feature | Design Value |
|---|---|
| C-Load™ Capacitive Load Drive | Guaranteed unity-gain stability into 100nF - eliminates need for series isolation resistors in ADC driver or filter applications. |
| Rail-to-Rail Input/Output | Input range extends 100mV beyond rails; output swings to within 30mV of V–/V+ - maximizes dynamic range in single-supply systems. |
| Low Power Shutdown | 7µA max shutdown current with SHDN pin (not present on MS8 package) - note: LTC6256CMS8#PBF has no SHDN pin; this feature applies only to S6/TS8/KC/DC variants. |
| High PSRR/CMRR | 100dB PSRR and CMRR maintained over 0.1Hz–10kHz - preserves signal integrity in battery-powered systems with noisy DC-DC converters. |
| Low Input Noise | 20nV/√Hz at 1kHz and 2.5µVP-P (0.1–10Hz) - suitable for amplifying µV-level sensor outputs without degrading SNR. |
Applications
| Micropower Active Filter | Portable Instrumentation |
|---|---|
Use Scenario: 2nd-order Sallen-Key low-pass filter in handheld gas detector with 3.3V Li-ion supply. IC Role / Device Role: Dual op-amp implements filter stages with matched gain-bandwidth and low quiescent current. Use Value: 65µA per amp enables continuous 24/7 filtering with <150µA total analog section current, extending battery life to >18 months. |
Use Scenario: Signal conditioning front-end for thermocouple and RTD measurements in field-service multimeter. IC Role / Device Role: First-stage PGA and reference buffer with rail-to-rail I/O and low offset drift. Use Value: 350µV max VOS and 1.5µV/°C drift ensure <0.1°C measurement accuracy across –10°C to 50°C operating range. |
| Battery-Powered Sensor Node | Automotive Cabin Sensor Interface |
Use Scenario: Analog front-end for MEMS accelerometer in wireless IoT node powered by CR2032 coin cell. IC Role / Device Role: Low-noise amplifier and anti-aliasing filter driver before SAR ADC. Use Value: 20nV/√Hz input noise and 6.5MHz GBW preserve signal fidelity for vibration analysis up to 2kHz while consuming <70µA. |
Use Scenario: Occupancy detection signal chain using infrared pyroelectric sensor in automotive HVAC control module. IC Role / Device Role: High-CMRR preamplifier rejecting ignition noise and alternator ripple in 12V vehicle electrical system. Use Value: 100dB CMRR/PSRR suppresses >60dB of common-mode interference, enabling reliable detection at <100mVP-P signal levels. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual low-power rail-to-rail op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV9002IDR | Lower GBW (1MHz), higher supply current (60µA typ but 120µA max), no C-Load™ - requires external isolation resistor for >1nF loads. | Targeted at cost-sensitive consumer electronics; lacks guaranteed stability into >10nF loads. | Select TLV9002IDR only if bandwidth <1MHz suffices and layout cannot accommodate 100nF direct drive. |
| AD8602ARMZ | Higher supply current (240µA), higher offset (600µV max), no shutdown, but superior 12nV/√Hz noise and 10MHz GBW. | Used in higher-precision, higher-power industrial sensors where noise and speed outweigh battery life concerns. | Choose AD8602ARMZ when SNR >90dB and bandwidth >5MHz are required, accepting 3.7× higher quiescent current. |
Compared with TLV9002IDR and AD8602ARMZ, the LTC6256CMS8#PBF uniquely balances ultra-low power (65µA), high bandwidth (6.5MHz), and robust capacitive load drive (100nF) - making it optimal for space-constrained, battery-operated systems requiring both precision and longevity without layout compromises.
Availability
LTC6256CMS8#PBF is available at Aetrix Electronics and suitable for micropower active filters, portable instrumentation, and battery-powered sensor nodes requiring stable component supply with guaranteed long-term availability.
Supply support for LTC6256CMS8#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, serving industrial, automotive, communications, and healthcare markets.
The LTC6255/LTC6256/LTC6257 family was designed specifically for ultra-low-power, high-precision signal conditioning in energy-constrained applications - emphasizing rail-to-rail operation, capacitive load resilience, and sub-100µA quiescent current without sacrificing bandwidth or noise performance.
FAQ
Does the LTC6256CMS8#PBF have a shutdown pin?
No, the LTC6256CMS8#PBF in the 8-lead MSOP (MS8) package does not include a shutdown (SHDN) pin. Shutdown functionality is only available on LTC6256 variants in S6, TS8, KC, and DC packages. The LTC6256CMS8#PBF operates continuously when powered; for power-gated applications, external enable circuitry or a different package variant must be selected.
What is the maximum capacitive load the LTC6256CMS8#PBF can drive stably?
The LTC6256CMS8#PBF is specified for unity-gain stable operation with up to 100nF capacitive load, as confirmed in the "Capacitive Load Handling" typical performance graph (Figure G31). This capability is enabled by its C-Load™ output architecture and eliminates the need for series isolation resistors in ADC driver or filter applications - a key differentiator versus standard rail-to-rail op amps.
Can the LTC6256CMS8#PBF operate from a 1.8V supply?
Yes, the LTC6256CMS8#PBF is fully specified for operation from 1.8V to 5.25V supply voltage. At 1.8V, it maintains 6.5MHz gain-bandwidth product (typ), 4MHz –3dB bandwidth, 60µA typical supply current, and rail-to-rail output swing from 30mV above V– to 30mV below V+, enabling true single-cell lithium or alkaline battery compatibility.
Is the LTC6256CMS8#PBF pin-compatible with other dual op amps in MSOP-8?
No, the LTC6256CMS8#PBF uses a non-standard pinout optimized for dual-amplifier symmetry: pins 1/2/3/4 = OUTA/–INA/+INA/V– and pins 5/6/7/8 = V+/+INB/–INB/OUTB. It is not pin-compatible with industry-standard dual op amps like LMV358 or MCP6022, which place V+ at pin 8 and V– at pin 4. PCB layout must follow the LTC6256-specific pin mapping.
What is the input voltage range specification for the LTC6256CMS8#PBF?
The LTC6256CMS8#PBF features over-the-rail input capability: inputs accept voltages from V– – 0.1V to V+ + 0.1V across the full temperature range. This allows true ground-sensing (e.g., 0V input on 3.3V single supply) and simplifies interfacing with sensors whose output may exceed the supply rails by small margins, such as bridge-based pressure transducers.
LTC6256CMS8#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:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP
LTC6256CMS8#PBF FAQ
1.How can I place an order for LTC6256CMS8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6256CMS8#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 LTC6256CMS8#PBF reliable?
The price and inventory of LTC6256CMS8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6256CMS8#PBF is usually 5 days.
3.What payment methods are accepted for LTC6256CMS8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6256CMS8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6256CMS8#PBF?
LTC6256CMS8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6256CMS8#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 LTC6256CMS8#PBF?
For technical support, including LTC6256CMS8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6256CMS8#PBF requirements.
6.How does Aetrix verify that LTC6256CMS8#PBF is sourced from the original manufacturer or authorized distributors?
All LTC6256CMS8#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 LTC6256CMS8#PBF meets industry standards.
7.What is the process for return or replacement of LTC6256CMS8#PBF?
All LTC6256CMS8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6256CMS8#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 LTC6256CMS8#PBF part is unused and in its original packaging.
Return procedure for LTC6256CMS8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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