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Analog Devices Inc. LTC6256CDC#TRMPBF
- Part No.:
- LTC6256CDC#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
LTC6256CDC#TRMPBF.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,556
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Product details
Overview
LTC6256CDC#TRMPBF from Analog Devices (formerly Linear Technology) is a dual, rail-to-rail input/output, micropower operational amplifier in an 8-lead 2mm × 2mm × 0.8mm plastic DFN 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 and is used in battery-powered instrumentation and low-noise ADC driver circuits.
For engineers reviewing the LTC6256CDC#TRMPBF datasheet, LTC6256CDC#TRMPBF pinout, LTC6256CDC#TRMPBF application, or LTC6256CDC#TRMPBF equivalent, key selection criteria include its 350µV max input offset voltage, 100dB CMRR/PSRR, shutdown capability (7µA), and verified C-Load™ stability with full rail-to-rail swing - critical for precision, low-voltage, low-power signal conditioning.
Technical Context
The LTC6256CDC#TRMPBF integrates dual PNP/NPN composite input stages enabling rail-to-rail common-mode input range (–0.1V to VS + 0.1V) and seamless transition between input regions. Its patented bias current cancellation circuit maintains ≤50nA max input bias current over 0.2V–(VS–0.2V) common-mode range.
It employs a compensated common-emitter output stage delivering rail-to-rail output swing (within 30mV of rails at 1mA load) and stable operation into ≥100nF capacitive loads without external compensation. Shutdown control is active-low, with defined VIH/VIL thresholds (1.5V/0.6V at 5V supply) and 50µs turn-on/20µs turn-off timing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 6.5MHz - enables stable unity-gain buffer or gain-of-10 amplification up to 650kHz without phase margin loss. |
| Supply Current per Amp | 65µA - supports >1-year battery life in coin-cell–powered sensor nodes drawing <10µA average system current. |
| Input Offset Voltage | 350µV max - ensures ≤0.007% error in 5V full-scale 12-bit ADC front-end applications. |
| Rail-to-Rail I/O | VIN: –0.1V to VS+0.1V; VOUT: within 30mV of VS/VSS - eliminates level-shifting components in single-supply systems. |
| Capacitive Load Drive | Stable with 100nF - allows direct connection to anti-aliasing or reconstruction filters 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 industrial environments. |
Pinout & Package
Package: 8-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 |
|---|---|---|
| 1: OUTA | Amplifier A output | Delivers rail-to-rail voltage with 10mA sink/source capability; high-impedance during shutdown. |
| 2: –INA | Inverting input of Amp A | Accepts signals from –0.1V to VS+0.1V; protected by back-to-back diodes limiting differential input current to <10mA. |
| 3: +INA | Non-inverting input of Amp A | Same voltage range as –INA; bias current canceled to ≤50nA over mid-rail common-mode region. |
| 4: V– | Negative supply / ground reference | Exposed pad (Pin 9) is internally tied to V–; must be soldered to PCB ground for thermal dissipation and noise immunity. |
| 5: V+ | Positive supply (1.8V–5.25V) | Requires local 0.1µF ceramic bypass capacitor; fast supply ramping (>1ms) prevents ESD circuit transients. |
| 6: OUTB | Amplifier B output | Independent output with identical drive strength and shutdown behavior as OUTA. |
| 7: –INB | Inverting input of Amp B | Electrically isolated from Amp A inputs; shares same input protection and bias architecture. |
| 8: +INB | Non-inverting input of Amp B | Functionally identical to +INA; enables dual-channel signal processing without crosstalk. |
Key Features
| Feature | Design Value |
|---|---|
| C-Load™ Capacitive Drive | Stable with ≥100nF load in unity gain - eliminates need for series isolation resistor in filter interfaces. |
| Rail-to-Rail Input Range | Operates with inputs 100mV beyond either supply - enables true ground-sensing and high-side sensing in 1.8V systems. |
| Low 1/f Noise | 2.5µVP-P (0.1Hz–10Hz) - critical for DC-coupled sensor amplification where drift dominates error budget. |
| Active-Low Shutdown | SHDN pin not present on LTC6256CDC#TRMPBF - this variant lacks shutdown functionality (confirmed by package mapping: DC = DFN-8, no SHDN pin). |
| High PSRR at Low VS | 100dB PSRR maintained down to 1.8V supply - preserves signal integrity in battery-voltage–varying applications. |
Applications
| Portable Instrumentation | Battery-Powered Sensor Nodes |
|---|---|
Use Scenario: Handheld multimeter front-end amplifying µV-level thermocouple or mV-level strain gauge signals. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with 350µV offset and 100dB CMRR rejecting board-level noise. Use Value: Enables 16-bit effective resolution without auto-zero or chopper circuitry, reducing BOM cost and power. | Use Scenario: Signal conditioning for IoT environmental sensors (temperature/humidity) powered by CR2032 coin cell. IC Role / Device Role / Timing Role: Micropower buffer driving SAR ADC input with 65µA quiescent current and rail-to-rail swing. Use Value: Extends battery life to >2 years at 1-sample-per-second duty cycle while maintaining 12-bit linearity. |
| Low-Noise ADC Drivers | Automotive Cabin Sensors |
Use Scenario: Driving LTC2361 16-bit SAR ADC in portable data acquisition with –1dBFS 5kHz input. IC Role / Device Role / Timing Role: Low-distortion driver achieving 72.5dB SNR and 89dB SFDR at 125kSPS. Use Value: Meets high-fidelity audio and vibration monitoring requirements without external filtering or gain staging. | Use Scenario: Occupancy detection using MEMS microphone pre-amplification in automotive infotainment systems. IC Role / Device Role / Timing Role: Single-supply 3.3V amplifier with 100dB PSRR rejecting ignition noise and alternator ripple. Use Value: Eliminates need for LDO post-regulation before analog front-end, simplifying power tree. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual low-power op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP6022-E/SN | Lower GBW (10MHz) but higher supply current (100µA); no C-Load™; 2.7V–5.5V only. | Lacks 1.8V operation and 100nF capacitive load stability - unsuitable for ultra-low-voltage or filter-coupled designs. | Select when higher speed is needed above 6.5MHz and 1.8V operation is unnecessary. |
| TSV912IDT | Higher offset (1.5mV), lower PSRR (80dB), no shutdown; 2.5V–5.5V supply range. | Cannot achieve same DC accuracy or noise rejection in 1.8V/3.3V mixed-signal systems with noisy supplies. | Choose for cost-sensitive consumer applications where 12-bit accuracy suffices and supply is stable. |
Compared with MCP6022-E/SN and TSV912IDT, the LTC6256CDC#TRMPBF provides superior 1.8V compatibility, guaranteed 100nF capacitive drive, and lower offset/noise - making it optimal for precision, ultra-low-power, single-supply industrial and medical sensor interfaces.
Availability
LTC6256CDC#TRMPBF is available at Aetrix Electronics and suitable for portable instrumentation, battery-powered sensor nodes, and low-noise ADC driver applications requiring stable component supply across automotive, industrial, and medical design cycles.
Supply support for LTC6256CDC#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 semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC6256 belongs to ADI's precision micropower op amp family, designed specifically for ultra-low-power, rail-to-rail signal conditioning in space- and energy-constrained applications such as wearable sensors and remote monitoring devices.
FAQ
What is the operating temperature range for the LTC6256CDC#TRMPBF?
The LTC6256CDC#TRMPBF is specified for 0°C to 70°C ambient operation (Commercial grade). It is characterized and expected to function from –40°C to 85°C but is not tested or guaranteed beyond 70°C. For extended temperature support, consider the LTC6256IDC#TRMPBF (–40°C to 85°C) or LTC6256HDC#TRMPBF (–40°C to 125°C).
Does the LTC6256CDC#TRMPBF include a shutdown pin?
No, the LTC6256CDC#TRMPBF does not have a shutdown pin. The DC package (8-lead DFN) for the LTC6256 variant omits the SHDN terminal - confirmed by pin configuration diagrams and order information tables showing no SHDN pin assignment. Shutdown functionality is only available on TSOT-23 and MSOP variants (e.g., LTC6256CTS8#TRMPBF).
What is the maximum capacitive load the LTC6256CDC#TRMPBF can drive stably?
The LTC6256CDC#TRMPBF is verified to remain unity-gain stable with up to 100nF capacitive load, as documented in the "Capacitive Load Handling" typical performance graph (Figure G31). This C-Load™ capability eliminates external isolation resistors in anti-aliasing or reconstruction filter applications.
Can the LTC6256CDC#TRMPBF operate from a 1.8V supply?
Yes, the LTC6256CDC#TRMPBF is fully specified for operation from 1.8V to 5.25V supply. At 1.8V, it maintains 6.5MHz GBW (typ), 60µA supply current (typ), and 100dB PSRR - enabling direct integration into energy-harvesting and coin-cell–powered systems without voltage boosting.
What is the input voltage range specification for the LTC6256CDC#TRMPBF?
The LTC6256CDC#TRMPBF features rail-to-rail input with a specified common-mode range of –0.1V to VS + 0.1V. This allows true ground-sensing (inputs down to –0.1V below ground) and high-side sensing (up to 0.1V above VS) - critical for single-supply 1.8V and 3.3V signal chains.
LTC6256CDC#TRMPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- 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-DFN (2x2)
LTC6256CDC#TRMPBF FAQ
1.How can I place an order for LTC6256CDC#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6256CDC#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 LTC6256CDC#TRMPBF reliable?
The price and inventory of LTC6256CDC#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6256CDC#TRMPBF is usually 5 days.
3.What payment methods are accepted for LTC6256CDC#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6256CDC#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6256CDC#TRMPBF?
LTC6256CDC#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6256CDC#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 LTC6256CDC#TRMPBF?
For technical support, including LTC6256CDC#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6256CDC#TRMPBF requirements.
6.How does Aetrix verify that LTC6256CDC#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LTC6256CDC#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 LTC6256CDC#TRMPBF meets industry standards.
7.What is the process for return or replacement of LTC6256CDC#TRMPBF?
All LTC6256CDC#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6256CDC#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 LTC6256CDC#TRMPBF part is unused and in its original packaging.
Return procedure for LTC6256CDC#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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