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Analog Devices Inc. LT6018HDE#PBF
- Part No.:
- LT6018HDE#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 10-WFQFN Exposed Pad
- Datasheet:
-
LT6018HDE#PBF.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 12DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,184
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Product details
Overview
LT6018HDE#PBF from Analog Devices (formerly Linear Technology) is a 33V, ultralow-noise precision operational amplifier in a 12-lead 4mm × 3mm DFN package with exposed pad, specified for –40°C to 125°C operation. It delivers 30nVP-P 0.1Hz–10Hz noise, 50µV max input offset voltage, 0.5µV/°C max drift, 124dB min CMRR, and 30V/µs slew rate-enabling high-fidelity signal conditioning in precision data acquisition systems.
For engineers reviewing the LT6018HDE#PBF datasheet, LT6018HDE#PBF pinout, LT6018HDE#PBF application, or LT6018HDE#PBF equivalent, key selection considerations include its H-grade temperature range, DFN thermal performance (θJA = 43°C/W), enable-controlled shutdown (6.2µA), and verified compatibility with ADC drivers, DAC buffers, and professional audio front-ends.
Technical Context
The LT6018HDE#PBF employs a proprietary bipolar input stage with series Zener diode protection-eliminating conventional input clamping diodes to preserve low noise and minimize transient-induced bias current spikes. Its architecture maintains 132dB minimum open-loop gain and 15MHz gain-bandwidth product while achieving 1.2nV/√Hz noise density at 1kHz.
It integrates an enable pin referenced to DGND, supporting single- or dual-supply logic interfacing across 8V–33V operation. The DFN package's exposed pad (Pin 13) must be connected to V– or floated to optimize thermal resistance (θJC = 12°C/W), critical for sustained operation at 125°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 8V to 33V - supports wide industrial and instrumentation rails without external regulation |
| 0.1Hz–10Hz Input Noise | 30nVP-P - enables sub-ppm linearity in DC-critical applications like weigh scales and sensor bridges |
| Input Offset Voltage (max) | 70µV - ensures <10ppm error in 16-bit ±10V full-scale systems |
| Slew Rate | 30V/µs - settles 10V steps in <1.2µs to 16-bit accuracy (0.0015%) |
| CMRR (min) | 124dB - rejects >160µV of common-mode interference per volt of CM voltage |
| Shutdown Current | 6.2µA typical - reduces system standby power by >99% vs active mode (7.65mA) |
| Gain-Bandwidth Product | 15MHz - supports stable unity-gain buffering up to 10MHz with <–40dB THD+N |
Pinout & Package
LT6018HDE#PBF uses a 12-lead (4mm × 3mm) plastic DFN package with exposed pad (Pin 13), rated for –40°C to 125°C operation. Thermal resistance is θJA = 43°C/W and θJC = 12°C/W. The exposed pad must be connected to V– or floated; it is electrically tied to V– but not intended as primary power path.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (EN) | Enable Input | Active-high control referenced to DGND; threshold = 1.7V above DGND for enable, 0.8V for shutdown |
| Pin 3 (V+) | Positive Supply | Accepts 8V–33V; requires local bypassing to ground near pin |
| Pin 5 (OUT) | Amplifier Output | Not high-impedance in shutdown; sinks/source up to 20mA with <1.8V saturation |
| Pin 7 (V–) | Negative Supply | Accepts rail-to-rail negative supply; exposed pad internally connected to this node |
| Pin 9 (+IN) | Noninverting Input | High-impedance bipolar input; common-mode range = V– + 3V to V+ – 3V |
| Pin 10 (–IN) | Inverting Input | Matched to +IN; supports precision feedback networks with minimal offset contribution |
| Pin 12 (DGND) | Digital Ground Reference | Reference for EN pin; must be between V– and V+ – 3V; cannot be floated |
| Pins 2, 4, 6, 8, 11 (NC) | No Connect | Not internally bonded; no electrical function |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow 1/f noise | 30nVP-P (0.1Hz–10Hz) enables stable DC measurements in slow-sampling systems |
| Series Zener input protection | Eliminates input diode conduction during transients-preserves low-noise performance without series resistors |
| Enable-referenced DGND pin | Allows robust EN interface across split/single supplies without level-shifting circuitry |
| H-grade temperature rating | Specified from –40°C to 125°C-validates performance in automotive under-hood and industrial motor-control environments |
| DFN thermal optimization | Exposed pad (Pin 13) connected to V– reduces θJA by ~15% vs non-connected layout-critical for 125°C ambient operation |
Applications
| ADC Driver Applications | Low Noise Precision Signal Processing |
|---|---|
Use Scenario: Driving SAR or delta-sigma ADC inputs in high-resolution data loggers requiring <16-bit effective resolution. IC Role / Device Role / Timing Role: Precision buffer isolating ADC input from source impedance; provides fast settling (<1.2µs) and low THD (–115dB). Use Value: Maintains 16-bit linearity by contributing <0.5LSB offset error and <30nVP-P noise floor-below quantization noise of 24-bit converters. | Use Scenario: Amplifying microvolt-level signals from strain gauges, thermopiles, or pH electrodes in environmental monitoring stations. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier with ultralow 1/f noise and high CMRR to reject EMI and thermal EMF errors. Use Value: Achieves <1µV total input-referred noise over 0.1–10Hz band-enabling detection of sub-100nV sensor outputs without averaging. |
| DAC Buffer | Professional Audio |
Use Scenario: Buffering high-speed DAC outputs in programmable power supply controllers where output stability and glitch energy matter. IC Role / Device Role / Timing Role: Unity-gain follower with rail-to-rail output swing and low distortion to preserve DAC spectral purity. Use Value: Delivers –115dB THD+N at 1kHz into 600Ω-prevents harmonic contamination of analog control loops. | Use Scenario: Line-level preamplifier stage in studio-grade audio interfaces handling microphone or instrument inputs. IC Role / Device Role / Timing Role: Low-noise, high-slew op amp in active filters and gain blocks before ADC conversion. Use Value: 1.2nV/√Hz noise density and 30V/µs slew rate prevent audible hiss or transient intermodulation distortion in 20Hz–20kHz band. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADA4522-2ARZ | Zero-drift architecture; 0.3µV max offset, 5.8nV/√Hz broadband noise, no enable pin | Better DC accuracy but higher 1/f noise (120nVP-P); unsuitable for low-frequency precision AC coupling | Select when ultra-low drift dominates over low 1/f noise requirements |
| OPA1612AIDR | Lower noise (1.1nV/√Hz), higher GBW (40MHz), no shutdown, SO-8 only | Superior audio bandwidth and THD (–124dB), but lacks H-grade temp range and enable control | Select for high-fidelity audio where 125°C operation and power gating are unnecessary |
Compared with ADA4522-2ARZ and OPA1612AIDR, LT6018HDE#PBF uniquely balances ultralow 1/f noise, H-grade temperature capability, and integrated shutdown-making it optimal for battery-powered precision instruments and automotive sensor signal chains where both DC stability and dynamic response matter.
Availability
LT6018HDE#PBF is available at Aetrix Electronics and suitable for precision data acquisition, industrial process control, and automotive sensor conditioning requiring stable component supply across extended temperature ranges.
Supply support for LT6018HDE#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 LT6018HDE#PBF belongs to Linear's precision op amp family designed specifically for demanding DC-accurate, low-noise signal chains in test equipment, medical devices, and industrial automation.
FAQ
What is the maximum operating temperature for LT6018HDE#PBF?
The LT6018HDE#PBF is specified for operation from –40°C to +125°C ambient temperature. Its absolute maximum junction temperature is 150°C. Thermal design must ensure θJA remains ≤43°C/W-achieved by connecting the exposed pad (Pin 13) to the V– plane and using adequate copper area. Derating curves in the datasheet confirm full parameter validity across the entire H-grade range.
Does LT6018HDE#PBF have true rail-to-rail input or output?
The LT6018HDE#PBF does not feature rail-to-rail input: its common-mode input range is limited to V– + 3V to V+ – 3V. However, its output swings to within 700mV of each rail under 20mA load-enabling ±12V operation with >22V peak-to-peak output swing. This architecture prioritizes precision and noise over full rail access, consistent with its role in high-dynamic-range instrumentation.
How does the enable pin (EN) interface with 3.3V microcontrollers?
When DGND = 0V, the LT6018HDE#PBF's EN pin requires ≥1.7V to enable and ≤0.8V to shut down-fully compatible with standard 3.3V GPIO. No level-shifter is needed. In single-supply configurations (e.g., V+ = 5V), EN can be driven directly from MCU pins. The internal reference ensures reliable transition even with supply ripple or temperature drift.
Can LT6018HDE#PBF drive capacitive loads without oscillation?
Yes-the LT6018HDE#PBF is unity-gain stable and drives up to 100pF capacitive loads without compensation. For loads >100pF, adding a small series resistor (e.g., 10Ω–50Ω) between OUT and the load restores phase margin. The DFN package's low inductance and optimized internal compensation make it inherently robust against capacitive loading in PCB traces and ADC input capacitance.
What is the purpose of the DGND pin on LT6018HDE#PBF?
The DGND pin on LT6018HDE#PBF serves as the reference voltage for the enable (EN) pin threshold-ensuring consistent enable/disable behavior across varying supply conditions. It must be held between V– and V+ – 3V and cannot be floated. When tied to system ground, it allows simple 0V/3.3V EN control; when referenced to V– in split supplies, it enables direct V+ connection for EN without level shifting.
LT6018HDE#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 10-WFQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 30V/µs
- Gain Bandwidth Product:
- 15 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 150 nA
- Voltage - Input Offset:
- 8 µV
- Current - Supply:
- 7.2mA
- Current - Output / Channel:
- 100 mA
- Voltage - Supply Span (Min):
- 8 V
- Voltage - Supply Span (Max):
- 33 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-DFN (4x3)
LT6018HDE#PBF FAQ
1.How can I place an order for LT6018HDE#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT6018HDE#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 LT6018HDE#PBF reliable?
The price and inventory of LT6018HDE#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT6018HDE#PBF is usually 5 days.
3.What payment methods are accepted for LT6018HDE#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT6018HDE#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT6018HDE#PBF?
LT6018HDE#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT6018HDE#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 LT6018HDE#PBF?
For technical support, including LT6018HDE#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT6018HDE#PBF requirements.
6.How does Aetrix verify that LT6018HDE#PBF is sourced from the original manufacturer or authorized distributors?
All LT6018HDE#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 LT6018HDE#PBF meets industry standards.
7.What is the process for return or replacement of LT6018HDE#PBF?
All LT6018HDE#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT6018HDE#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 LT6018HDE#PBF part is unused and in its original packaging.
Return procedure for LT6018HDE#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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