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Analog Devices Inc. LT6011AIDD#PBF
- Part No.:
- LT6011AIDD#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
LT6011AIDD#PBF.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:195
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Product details
Overview
LT6011AIDD#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, <85µV max input offset voltage (–40°C to 85°C), and 135µA supply current per amplifier on 5V, enabling high-fidelity amplification in battery-powered sensor front-ends and instrumentation.
For engineers reviewing the LT6011AIDD#PBF datasheet, LT6011AIDD#PBF pinout, LT6011AIDD#PBF application, or LT6011AIDD#PBF equivalent, key selection criteria include guaranteed –40°C to 85°C operation, 3mm × 3mm DFN package with exposed V– pad, matched dual-channel performance (ΔVOS ≤ 170µV), and rail-to-rail output swing within 40mV of either rail at 1mA load.
Technical Context
The LT6011AIDD#PBF integrates a precision bipolar input stage with on-chip input bias current cancellation, achieving 300pA max IB and 120dB min open-loop gain (±15V). Its architecture supports stable operation from 2.7V single supply to ±18V dual supply while maintaining CMRR ≥107dB and PSRR ≥112dB over temperature.
It features internal 500Ω series input resistors and back-to-back diodes for ±10V differential input protection, and its rail-to-rail output stage uses complementary push-pull circuitry to achieve 40mV saturation voltage at 1mA sink/source-critical for low-voltage precision systems where headroom is constrained.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | ≤85 µV max (–40°C to 85°C); ensures ≤0.0017% gain error in 5V full-scale instrumentation bridges. |
| Input Bias Current | ±300 pA max (–40°C to 85°C); enables use with >10MΩ feedback networks without significant DC error. |
| Supply Current | 135 µA per amplifier (25°C, 5V); allows dual-channel precision amplification in sub-300µA system power budgets. |
| Output Swing | Within 40 mV of V+ or V– at 1mA load; supports 4.92Vpp output on 5V supply, maximizing dynamic range. |
| Input Noise Density | 14 nV/√Hz at 1kHz; dominates total noise only below 20kΩ source impedance-ideal for photodiode and thermocouple amps. |
| Gain Bandwidth | 250 kHz (min, –40°C to 85°C); sufficient for DC–10kHz sensor signal conditioning with ≥20dB gain margin. |
| CMRR | 107 dB min (–40°C to 85°C); rejects common-mode shifts >100µV in noisy industrial environments. |
Pinout & Package
LT6011AIDD#PBF is housed in an 8-lead 3mm × 3mm plastic DFN package with underside metal pad connected to V–. The exposed thermal pad improves θJA to 43°C/W and must be soldered to PCB ground plane for optimal thermal performance and noise immunity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: OUT A | Amplifier A output | Rail-to-rail capable; drives loads down to 2kΩ while maintaining linearity and settling time. |
| 2: –IN A | Inverting input A | Protected by 500Ω series resistor and back-to-back diodes; withstands ±10V differential input. |
| 3: +IN A | Non-inverting input A | Same protection as –IN A; low 4pF input capacitance minimizes phase shift in high-Z sensor interfaces. |
| 4: V– | Negative supply / thermal pad reference | Exposed metal pad on bottom connects internally to V–; must be soldered to PCB ground for thermal and EMI control. |
| 5: V+ | Positive supply | Accepts 2.7V to 36V single supply or ±1.35V to ±18V dual supply; PSRR ≥112dB suppresses supply ripple. |
| 6: OUT B | Amplifier B output | Matched to OUT A (ΔVOUT ≤ 20mV); enables dual-channel synchronous acquisition without inter-channel skew. |
| 7: –IN B | Inverting input B | Electrically identical to –IN A; ΔIB ≤ 600pA ensures matched DC error between channels. |
| 8: +IN B | Non-inverting input B | Same specs as +IN A; ΔVOS ≤ 170µV guarantees consistent offset across both amplifiers in differential pairs. |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed –40°C to 85°C performance | A-grade qualification ensures all electrical specs-including offset, drift, and gain-are tested and warranted across industrial temperature range. |
| Low 0.8µV/°C max VOS drift | Minimizes calibration drift in portable test equipment; enables <10µV total offset variation over 100°C ambient swing. |
| 14nV/√Hz input noise density | Preserves SNR in low-level sensor signals (e.g., thermocouples, strain gauges) without requiring external filtering or chopper stabilization. |
| Rail-to-rail output with 40mV saturation | Maximizes usable output voltage range on 3.3V or 5V supplies-critical for ADC driver stages where every millivolt counts. |
| Dual-channel matching (ΔVOS ≤ 170µV) | Enables accurate differential measurements and instrumentation amplifier configurations without external trimming. |
| Internal input protection (±10V differential) | Eliminates need for external clamping diodes in industrial I/O modules, reducing BOM count and board space. |
Applications
| Thermocouple Amplifiers | Precision Photo Diode Amplifiers |
|---|---|
|
Use Scenario: Amplifying µV-level Seebeck voltages from K-type thermocouples in HVAC controllers and process sensors. IC Role / Device Role: First-stage transimpedance and gain amplifier with ultra-low input bias current to avoid shunting thermocouple impedance. Use Value: 300pA max IB prevents >30µV error across 100kΩ thermocouple loop resistance; 14nV/√Hz noise ensures <0.1°C resolution at 1Hz bandwidth. |
Use Scenario: Converting nanoamp photocurrents from silicon photodiodes in medical pulse oximeters and spectrophotometers. IC Role / Device Role: Low-noise transimpedance amplifier with guarded input and rail-to-rail output driving 16-bit SAR ADC reference buffers. Use Value: 4pF input capacitance and 14nV/√Hz noise enable stable 100kΩ feedback with <10kHz bandwidth; 135µA quiescent current extends battery life. |
| Instrumentation Amplifiers | Battery-Powered Precision Systems |
|
Use Scenario: Building 3-op-amp in-amps for weigh scales and pressure transducers requiring 100dB CMRR and <100µV offset. IC Role / Device Role: Dual amplifier providing matched gain-setting and output buffering stages with guaranteed channel-to-channel tracking. Use Value: ΔVOS ≤ 170µV and ΔCMRR ≥101dB ensure common-mode rejection remains >95dB even with PCB layout asymmetry and temperature gradients. |
Use Scenario: Signal conditioning in handheld multimeters, portable gas analyzers, and wireless sensor nodes operating from coin-cell batteries. IC Role / Device Role: Dual-channel analog front-end delivering precision amplification, filtering, and level-shifting with minimal power overhead. Use Value: 270µA total supply current (both amps) enables >1-year operation on CR2032; rail-to-rail output eliminates need for charge pumps in 3.3V systems. |
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 2.7µV max VOS but lower 0.6µV/°C drift; 1.2mA supply current; SO-8 only. | Preferred in metrology-grade DC-coupled systems where long-term stability outweighs power budget. | Select when absolute offset <2.7µV is mandatory and supply current >1mA is acceptable. |
| MCP6V81-E/SN | Zero-drift architecture; 25µV max VOS; 150µA supply current; rail-to-rail input/output; SO-8/MSOP. | Better for AC-coupled or wide-temperature applications where drift elimination is critical over raw noise floor. | Select when near-zero drift (<0.01µV/°C) is required and 14nV/√Hz noise is secondary to offset stability. |
Compared with OP2177ARZ-REEL7 and MCP6V81-E/SN, the LT6011AIDD#PBF offers the best balance of ultra-low noise (14nV/√Hz), low power (135µA), and guaranteed industrial temperature operation in a space-saving DFN-making it optimal for battery-constrained, high-SNR sensor interfaces where zero-drift artifacts (chopping noise, aliasing) must be avoided.
Availability
LT6011AIDD#PBF is available at Aetrix Electronics and suitable for thermocouple amplifiers, precision photo diode amplifiers, instrumentation amplifiers, battery-powered precision systems, and low-voltage industrial I/O modules requiring stable component supply across extended temperature ranges.
Supply support for LT6011AIDD#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 and maintains its legacy of high-performance analog ICs with rigorous automotive and industrial qualification standards.
The LT6011AIDD#PBF belongs to Linear's precision op amp product line, designed specifically for low-noise, low-power, high-accuracy signal conditioning in sensor interfaces, instrumentation, and portable measurement equipment.
FAQ
What is the maximum input common-mode voltage range for LT6011AIDD#PBF?
The LT6011AIDD#PBF input stage operates within V– + 1V to V+ – 1.2V. For example, on a 5V/0V supply, inputs must stay between 1V and 3.8V. Exceeding this range causes gain collapse but no phase reversal-critical for protecting integrity in overvoltage fault conditions. This limitation is explicitly defined in the Absolute Maximum Ratings and Electrical Characteristics tables.
Does LT6011AIDD#PBF support rail-to-rail input operation?
No, the LT6011AIDD#PBF does not support rail-to-rail input operation. Its input common-mode range is limited to V– + 1V to V+ – 1.2V, as confirmed in the Applications Information section. However, its rail-to-rail output swing (within 40mV of either rail) is fully functional and widely used in non-inverting and inverting configurations where inputs remain biased within the valid range.
What is the thermal resistance (θJA) of the LT6011AIDD#PBF in its DFN package?
The LT6011AIDD#PBF in the 3mm × 3mm DFN (DD) package has a specified θJA of 43°C/W when the exposed metal pad is soldered to a minimum 1-inch² copper area on the PCB. This value is documented in the Absolute Maximum Ratings table and assumes standard JEDEC 2-layer board conditions-enabling reliable operation up to 125°C junction temperature at 135µA per amplifier.
Can LT6011AIDD#PBF drive capacitive loads, and if so, up to what value?
Yes, the LT6011AIDD#PBF can drive capacitive loads up to 500pF in unity-gain configuration, as stated in the Applications Information section. Stability improves with higher closed-loop gains. For loads exceeding 500pF, adding a small series resistor (e.g., 10–50Ω) between the output and capacitor restores phase margin without degrading DC accuracy.
How is input bias current matched between the two amplifiers in LT6011AIDD#PBF?
The LT6011AIDD#PBF specifies ∆IB ≤ 600pA (–40°C to 85°C) between its dual amplifiers, meaning the absolute difference in input bias current between Channel A and Channel B stays within this bound. This matching is measured and guaranteed per the "Input Bias Current Match" parameter in the Electrical Characteristics tables and enables precise differential and instrumentation amplifier designs without external trimming.
LT6011AIDD#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)
LT6011AIDD#PBF FAQ
1.How can I place an order for LT6011AIDD#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT6011AIDD#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 LT6011AIDD#PBF reliable?
The price and inventory of LT6011AIDD#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT6011AIDD#PBF is usually 5 days.
3.What payment methods are accepted for LT6011AIDD#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT6011AIDD#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT6011AIDD#PBF?
LT6011AIDD#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT6011AIDD#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 LT6011AIDD#PBF?
For technical support, including LT6011AIDD#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT6011AIDD#PBF requirements.
6.How does Aetrix verify that LT6011AIDD#PBF is sourced from the original manufacturer or authorized distributors?
All LT6011AIDD#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 LT6011AIDD#PBF meets industry standards.
7.What is the process for return or replacement of LT6011AIDD#PBF?
All LT6011AIDD#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT6011AIDD#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 LT6011AIDD#PBF part is unused and in its original packaging.
Return procedure for LT6011AIDD#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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