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Analog Devices Inc. LTC6256IDC#TRMPBF
- Part No.:
- LTC6256IDC#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
LTC6256IDC#TRMPBF.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,232
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Product details
Overview
LTC6256IDC#TRMPBF from Analog Devices (formerly Linear Technology) is a dual, rail-to-rail input/output, micropower operational amplifier in an 8-lead 2mm × 2mm DFN package. It delivers 6.5MHz gain-bandwidth product, 4.5MHz –3dB bandwidth at unity gain, and 65µA supply current per amplifier across 1.8V to 5.25V operation - enabling precision signal conditioning in battery-powered instrumentation and automotive sensor interfaces.
For engineers reviewing the LTC6256IDC#TRMPBF datasheet, LTC6256IDC#TRMPBF pinout, LTC6256IDC#TRMPBF application, or LTC6256IDC#TRMPBF 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 quiescent current, and guaranteed operation from –40°C to +85°C in industrial environments.
Technical Context
The LTC6256IDC#TRMPBF employs a dual-input-stage architecture (PNP/NPN) that enables rail-to-rail common-mode input range extending 0.1V beyond both supplies, while maintaining low bias current (<50nA) over mid-rail conditions. Its internal compensation ensures unity-gain stability even with 100nF capacitive loads.
It integrates active shutdown logic referenced to V–, with defined VIH/VIL thresholds (1.5V/0.6V at 5V supply), 50µs typical turn-on time, and high-impedance output state during shutdown - supporting multiplexer and power-gated analog front-end designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 6.5MHz - supports stable closed-loop gain ≥10 at 650kHz, suitable for anti-aliasing filters and ADC drivers. |
| Supply Current per Amp | 65µA max - enables >1-year battery life in 10µA-sleep systems with periodic 10ms active bursts. |
| Input Offset Voltage | 350µV max - ensures ≤0.035% error in 1V full-scale 12-bit measurement systems. |
| Rail-to-Rail I/O | VOUT swings within 30mV of rails, VIN operates from V– – 0.1V to V+ + 0.1V - eliminates level-shifting in single-supply 3.3V/5V systems. |
| Capacitive Load Drive | Stable with up to 100nF load in unity gain - removes need for isolation resistors when driving SAR ADC sample capacitors or long traces. |
| Shutdown Current | 7µA max - reduces system standby power by >90% vs active mode, critical for always-on sensor nodes. |
| Operating Temp Range | –40°C to +85°C - qualified for under-hood automotive and industrial control applications without derating. |
Pinout & Package
Package: 8-lead, 2mm × 2mm × 0.8mm plastic DFN (DC package) with exposed V– pad soldered to PCB for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: OUTA | Amplifier A output | Delivers rail-to-rail voltage swing; high-impedance during SHDN assertion. |
| 2: –INA | Inverting input of Amp A | Accepts common-mode voltages from V– – 0.1V to V+ + 0.1V; protected by back-to-back diodes. |
| 3: +INA | Non-inverting input of Amp A | Same voltage range as –INA; bias current <50nA between 0.2V and V+ – 0.2V. |
| 4: V– | Negative supply / ground reference | Exposed pad (Pin 9) is internally connected to V–; must be soldered to PCB plane for thermal performance. |
| 5: V+ | Positive supply (1.8V–5.25V) | Requires local 0.1µF ceramic bypass capacitor; supports split-supply operation if V+ – V– ∈ [1.8V, 5.25V]. |
| 6: OUTB | Amplifier B output | Independent output stage; identical AC/DC specs to OUTA. |
| 7: –INB | Inverting input of Amp B | Electrically isolated from Amp A inputs; shares same V+/V– supply pins. |
| 8: +INB | Non-inverting input of Amp B | Functionally identical to +INA; enables dual-channel signal conditioning on single footprint. |
Key Features
| Feature | Design Value |
|---|---|
| C-Load™ capacitive-load drive | Eliminates external isolation resistors when driving 100nF ADC input capacitors or long PCB traces. |
| Active low SHDN pin | Reduces total supply current to ≤7µA per amplifier; output enters high-Z state for analog multiplexing. |
| Input stage with PNP+NPN topology | Enables true rail-to-rail input operation with <50nA bias current over 90% of supply range. |
| Low 1/f noise | 2.5µVP-P (0.1Hz–10Hz) - preserves DC accuracy in precision weigh scales and thermopile amplifiers. |
| High PSRR/CMRR | 100dB PSRR and CMRR - rejects supply ripple and common-mode interference in noisy industrial environments. |
Applications
| Micropower Active Filter | Portable Instrumentation |
|---|---|
Use Scenario: 2nd-order Sallen-Key low-pass filter in handheld gas analyzer with 3.3V coin-cell supply. IC Role / Device Role / Timing Role: Dual op-amp implements filter transfer function and buffer stage; one amp used for filtering, second for output buffering. Use Value: 65µA per amplifier enables >2-year battery life; C-Load™ drives 220pF ceramic filter capacitor without peaking. | Use Scenario: Signal conditioning front-end for 4-wire RTD measurement in portable multimeter. IC Role / Device Role / Timing Role: Precision instrumentation amplifier core (gain = 100) with matched dual-path topology. Use Value: 350µV max VOS limits RTD resistance error to <0.1Ω at 100Ω; rail-to-rail I/O accommodates 0–3.3V ADC input range. |
| Battery-Powered Sensor Node | Automotive Cabin Sensor Interface |
Use Scenario: Analog front-end for MEMS accelerometer in wireless IoT node operating on CR2032. IC Role / Device Role / Timing Role: Low-noise amplifier with selectable gain and shutdown control synchronized to MCU wake-up events. Use Value: 7µA shutdown current extends shelf life; 20nV/√Hz input noise preserves SNR in low-g vibration detection. | Use Scenario: Occupancy detection circuit using infrared pyroelectric sensor in automotive HVAC control module. IC Role / Device Role / Timing Role: Dual-channel amplifier: first stage for sensor signal amplification, second for window comparator reference generation. Use Value: –40°C to +85°C rating ensures reliability in dashboard temperature extremes; 100dB CMRR 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 typ but 120µA max), no shutdown pin, 1.2V min supply. | Not suitable for 4.5MHz bandwidth or shutdown-controlled power cycling; better for ultra-low-voltage (1.8V) systems. | Select TLV9002IDR only if supply voltage <1.8V is required and bandwidth ≤1MHz suffices. |
| OPA2313AIDR | Higher VOS (1.25mV max), no shutdown, 1.8V–5.5V supply, 10MHz GBW, higher noise (25nV/√Hz). | Superior bandwidth but poorer DC precision and no power gating; requires external enable circuitry for low-power sleep. | Choose OPA2313AIDR when high-speed settling (1.5µs) outweighs offset and shutdown needs. |
Compared with TLV9002IDR and OPA2313AIDR, the LTC6256IDC#TRMPBF uniquely combines 6.5MHz GBW, 65µA supply current, integrated shutdown, and 350µV VOS - making it optimal for battery-constrained, precision, and bandwidth-sensitive dual-channel analog signal chains.
Availability
LTC6256IDC#TRMPBF is available at Aetrix Electronics and suitable for micropower active filters, portable instrumentation, and automotive electronics requiring stable component supply across extended temperature ranges.
Supply support for LTC6256IDC#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 acquired Linear Technology in 2017 and maintains its legacy of high-performance analog ICs for precision, power, and signal chain applications.
The LTC6256IDC#TRMPBF belongs to the LTC6255/LTC6256/LTC6257 family - designed specifically for micropower, rail-to-rail, wide-bandwidth signal conditioning in space- and energy-constrained systems.
FAQ
What is the maximum capacitive load the LTC6256IDC#TRMPBF can drive stably in unity-gain configuration?
The LTC6256IDC#TRMPBF is specified to drive up to 100nF capacitive loads stably in unity-gain configuration without external compensation, thanks to its C-Load™ architecture. This eliminates series isolation resistors when interfacing with SAR ADC input capacitors or long PCB traces, preserving signal integrity and simplifying layout.
Does the LTC6256IDC#TRMPBF support true ground-sensing input operation?
Yes - the LTC6256IDC#TRMPBF accepts input common-mode voltages down to V– – 0.1V. With V– tied to ground, this enables true ground-sensing (0V input) without level-shifting, critical for current-sense amplifiers and bridge sensor interfaces where signals originate at earth potential.
What is the shutdown behavior of the LTC6256IDC#TRMPBF output stage?
When the SHDN pin is pulled low (≤0.6V above V–), the LTC6256IDC#TRMPBF output enters a high-impedance state with leakage ≤±400nA. This allows safe connection to shared buses or multiplexed signal paths without loading adjacent channels - a key requirement in multi-sensor data acquisition systems.
How does the LTC6256IDC#TRMPBF achieve low input bias current across its full input range?
The LTC6256IDC#TRMPBF uses an active bias-current cancellation circuit that dynamically matches base currents of its dual PNP/NPN input stages. This achieves <50nA input bias current over 90% of the common-mode range (0.2V above V– to 0.2V below V+), enabling accurate amplification of signals from high-impedance sources like pH electrodes or photodiodes.
Is the LTC6256IDC#TRMPBF pin-compatible with other members of the LTC6255/LTC6256/LTC6257 family?
No - the LTC6256IDC#TRMPBF uses an 8-lead DFN (DC) package, while the single-channel LTC6255IDC#TRMPBF uses a 6-lead DFN. Pinouts differ: LTC6256IDC#TRMPBF has dual amplifier terminals (OUTA/–INA/+INA/OUTB/–INB/+INB) plus V+/V–, whereas LTC6255 variants have only one set of signal pins. Board redesign is required for substitution.
LTC6256IDC#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:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-DFN (2x2)
LTC6256IDC#TRMPBF FAQ
1.How can I place an order for LTC6256IDC#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6256IDC#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 LTC6256IDC#TRMPBF reliable?
The price and inventory of LTC6256IDC#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6256IDC#TRMPBF is usually 5 days.
3.What payment methods are accepted for LTC6256IDC#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6256IDC#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6256IDC#TRMPBF?
LTC6256IDC#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6256IDC#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 LTC6256IDC#TRMPBF?
For technical support, including LTC6256IDC#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6256IDC#TRMPBF requirements.
6.How does Aetrix verify that LTC6256IDC#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LTC6256IDC#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 LTC6256IDC#TRMPBF meets industry standards.
7.What is the process for return or replacement of LTC6256IDC#TRMPBF?
All LTC6256IDC#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6256IDC#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 LTC6256IDC#TRMPBF part is unused and in its original packaging.
Return procedure for LTC6256IDC#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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