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Analog Devices Inc. LT6011IDD#PBF
- Part No.:
- LT6011IDD#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
LT6011IDD#PBF.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:734
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Product details
Overview
LT6011IDD#PBF from Analog Devices (formerly Linear Technology) is a dual precision rail-to-rail output operational amplifier optimized for low-noise, low-power, high-accuracy signal conditioning. It delivers 14nV/√Hz input voltage noise, 135µA supply current per amplifier, and <125µV max input offset voltage over –40°C to 85°C - enabling high-fidelity amplification in thermocouple interfaces and battery-powered instrumentation.
For engineers reviewing the LT6011IDD#PBF datasheet, LT6011IDD#PBF pinout, LT6011IDD#PBF application, or LT6011IDD#PBF equivalent, key selection criteria include guaranteed –40°C to 85°C operation, 3mm × 3mm DFN package with exposed V– pad, rail-to-rail output swing within 40mV of rails at 1mA load, and matched dual-channel performance for differential sensing.
Technical Context
The LT6011IDD#PBF employs a precision bipolar input stage with on-chip trimming to achieve sub-125µV offset and 0.8µV/°C drift, supported by internal 500Ω series input resistors and back-to-back ESD diodes. Its architecture maintains 120dB minimum open-loop gain and >107dB CMRR across the full industrial temperature range.
It operates from 2.7V single supply to ±18V dual supply, with rail-to-rail output stage capable of sourcing/sinking ≥4mA while settling to 0.01% in 45µs. Input bias current remains ≤±900pA over temperature, enabling stable operation with high-impedance sensors and feedback networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 135µA per amplifier at 5V - enables multi-channel precision sensing in energy-constrained systems |
| Input Offset Voltage | ≤125µV max over –40°C to 85°C - ensures <0.0025% gain error in 5V full-scale instrumentation |
| Input Noise Density | 14nV/√Hz at 1kHz - preserves SNR in low-level sensor signals (e.g., photo diode, strain gauge) |
| Rail-to-Rail Output | Swings to within 40mV of V+ and V– at 1mA load - maximizes dynamic range in low-voltage single-supply designs |
| Gain Bandwidth | 225kHz min - supports stable closed-loop operation up to ~20kHz with unity-gain stability |
| Common-Mode Range | V– +1V to V+ –1.2V - defines safe input voltage window without gain collapse or phase reversal |
| Operating Temp | –40°C to 85°C (I-grade) - qualified for industrial and automotive under-hood environments |
Pinout & Package
LT6011IDD#PBF is housed in an 8-lead 3mm × 3mm plastic DFN package (DD) with underside metal pad connected to V–. The exposed thermal pad improves power dissipation and reduces θJA to 43°C/W.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | +IN A | Non-inverting input of Amplifier A - high-impedance node requiring guard ring layout for leakage control |
| 2 | –IN A | Inverting input of Amplifier A - matched to Pin 1 for common-mode rejection; avoid unequal trace lengths |
| 3 | OUT A | Output of Amplifier A - capable of 1mA sink/source while maintaining rail-to-rail swing |
| 4 | V– | Negative supply rail and thermal pad connection - must be low-impedance plane for stability and thermal performance |
| 5 | V+ | Positive supply rail - decoupling capacitor required within 1cm for PSRR optimization |
| 6 | OUT B | Output of Amplifier B - electrically isolated but thermally coupled to OUT A for matched drift |
| 7 | –IN B | Inverting input of Amplifier B - shares same input stage topology and matching specs as Pin 2 |
| 8 | +IN B | Non-inverting input of Amplifier B - pin-compatible with Pin 1; used for dual-channel differential front-ends |
Key Features
| Feature | Design Value |
|---|---|
| Low Input Bias Current | ≤±900pA max over –40°C to 85°C - enables use with >10MΩ source impedances without significant DC error |
| Offset Voltage Matching | ≤250µV max between channels - supports accurate dual-amplifier configurations like instrumentation amps |
| PSRR & CMRR | ≥112dB PSRR and ≥107dB CMRR - rejects supply ripple and common-mode interference in noisy industrial settings |
| Capacitive Load Drive | Stable with up to 500pF in unity gain - eliminates need for external isolation resistors in ADC driver applications |
| Thermal Performance | θJA = 43°C/W with PCB thermal pad - allows continuous operation at 85°C ambient with minimal derating |
Applications
| Thermocouple Amplifiers | Precision Photo Diode Amplifiers |
|---|---|
Use Scenario: Cold-junction compensation and µV-level thermocouple signal amplification in industrial process controllers. IC Role / Device Role / Timing Role: Primary signal-conditioning amplifier with ultra-low input offset and drift to resolve <1°C temperature changes. Use Value: 125µV max VOS and 0.8µV/°C drift ensure <0.1% measurement accuracy over full industrial temperature range. |
Use Scenario: Transimpedance amplification of nanoamp-level photocurrents from scientific-grade photodiodes. IC Role / Device Role / Timing Role: Low-noise, low-bias-current transimpedance amplifier with rail-to-rail output for wide-dynamic-range light sensing. Use Value: 14nV/√Hz noise and ≤±900pA IB enable sub-picoamp resolution without active guarding complexity. |
| Instrumentation Amplifiers | Battery-Powered Precision Systems |
Use Scenario: Dual-op-amp front-end for 3-op-amp instrumentation amplifier topologies in medical ECG/EEG analog front-ends. IC Role / Device Role / Timing Role: Matched pair for gain-setting and reference buffer stages requiring identical VOS, drift, and CMRR. Use Value: ≤250µV VOS match and 109dB ∆CMRR guarantee <0.005% gain error in high-common-mode biomedical signals. |
Use Scenario: Signal conditioning in portable gas analyzers and handheld multimeters powered by single Li-ion cells. IC Role / Device Role / Timing Role: Low-power precision amplifier enabling >100-hour battery life while maintaining 16-bit-equivalent linearity. Use Value: 135µA supply current per channel and rail-to-rail output preserve full 3.0–3.6V battery voltage range for maximum ADC utilization. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OP2177ARZ-REEL7 | Higher 600µV max VOS, 2.2nV/√Hz noise, 400µA supply current - lower noise but higher power and offset | Preferred in high-speed, low-noise lab equipment where power is not constrained | Select when 2.2nV/√Hz noise outweighs 3× higher supply current and 5× higher offset |
| MCP6V81-E/SN | Zero-drift architecture, 12µV max VOS, 100nA IB, 1.1mA supply - near-zero drift but higher current and bias | Suitable for DC-coupled, long-term stable measurements where drift dominates error budget | Select when <0.01µV/°C drift is mandatory and 8× higher supply current is acceptable |
Compared with OP2177ARZ-REEL7 and MCP6V81-E/SN, LT6011IDD#PBF offers optimal balance of ultra-low power (135µA), low noise (14nV/√Hz), and industrial-temperature precision (125µV VOS) - making it uniquely suited for always-on, battery-operated instrumentation where thermal drift, supply headroom, and quiescent current are co-constrained.
Availability
LT6011IDD#PBF is available at Aetrix Electronics and suitable for thermocouple amplifiers, precision photo diode amplifiers, instrumentation amplifiers, battery-powered precision systems, and low-voltage precision systems requiring stable component supply across extended temperature ranges.
Supply support for LT6011IDD#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 acquired Linear Technology in 2017, inheriting its legacy of high-performance analog ICs for precision, power, and signal integrity applications.
The LT6011IDD#PBF belongs to Linear's precision op amp product line, designed specifically for high-accuracy, low-power signal conditioning in industrial, medical, and test equipment where offset, noise, and thermal stability are critical.
FAQ
What is the maximum input common-mode voltage range for LT6011IDD#PBF?
The LT6011IDD#PBF input stage operates safely from V– +1V to V+ –1.2V. Exceeding this range causes gain collapse but no phase reversal. For example, with 5V/0V supplies, inputs must stay within 1V to 3.8V; with ±15V supplies, the valid range is –14V to +13.8V. This limitation is independent of the rail-to-rail output capability of LT6011IDD#PBF.
Does LT6011IDD#PBF require external input protection beyond its internal circuitry?
LT6011IDD#PBF includes internal 500Ω series resistors and back-to-back diodes, limiting input current to ≤10mA for ≤10V differential input. For applications with >10V expected differential voltage (e.g., industrial I/O), external series resistors (e.g., 1kΩ per input) are required to maintain safe current limits. No external clamping diodes are needed if differential voltage stays within spec.
Can LT6011IDD#PBF drive a 1000pF capacitive load stably?
No - LT6011IDD#PBF is specified stable up to 500pF in unity gain. Driving 1000pF directly risks peaking or oscillation. To drive larger loads, add a small isolation resistor (e.g., 10–50Ω) between LT6011IDD#PBF output and the capacitance, or operate at higher closed-loop gain (≥10V/V), which improves phase margin per the gain vs frequency curves in the LT6011IDD#PBF datasheet.
How does the exposed thermal pad on the DD package of LT6011IDD#PBF connect electrically?
The underside metal pad of the LT6011IDD#PBF DD package is internally connected to the V– pin (Pin 4). It must be soldered to a PCB copper pour tied to the system V– plane to ensure both thermal performance (θJA = 43°C/W) and electrical integrity. Floating or misconnected pads degrade stability, noise, and thermal reliability of LT6011IDD#PBF.
Is LT6011IDD#PBF pin-compatible with other LT6011 variants like LT6011IS8#PBF?
No - LT6011IDD#PBF (8-lead DFN) has different pinout and footprint than LT6011IS8#PBF (8-lead SOIC). While both contain identical dual-amplifier functionality and specifications, the DFN package places +IN B on Pin 8 and +IN A on Pin 1, whereas SOIC places +IN A on Pin 3 and +IN B on Pin 5. PCB layout and routing must be redesigned when substituting LT6011IDD#PBF for SOIC variants.
LT6011IDD#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LT®
- Package/Case:
- 8-WFDFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.11V/µs
- Gain Bandwidth Product:
- 350 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 20 pA
- Voltage - Input Offset:
- 35 µV
- Current - Supply:
- 135µA (x2 Channels)
- Current - Output / Channel:
- 20 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-DFN (3x3)
LT6011IDD#PBF FAQ
1.How can I place an order for LT6011IDD#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT6011IDD#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 LT6011IDD#PBF reliable?
The price and inventory of LT6011IDD#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT6011IDD#PBF is usually 5 days.
3.What payment methods are accepted for LT6011IDD#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT6011IDD#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT6011IDD#PBF?
LT6011IDD#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT6011IDD#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 LT6011IDD#PBF?
For technical support, including LT6011IDD#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT6011IDD#PBF requirements.
6.How does Aetrix verify that LT6011IDD#PBF is sourced from the original manufacturer or authorized distributors?
All LT6011IDD#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 LT6011IDD#PBF meets industry standards.
7.What is the process for return or replacement of LT6011IDD#PBF?
All LT6011IDD#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT6011IDD#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 LT6011IDD#PBF part is unused and in its original packaging.
Return procedure for LT6011IDD#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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