My Inquiry
My Account
Analog Devices Inc. LTC2065IUD#PBF
- Part No.:
- LTC2065IUD#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
LTC2065IUD#PBF.pdf
- Description:
- IC OPAMP ZER-DRIFT 4CIRC 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:124
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC2065IUD#PBF from Analog Devices is a quad-channel, zero-drift, micropower operational amplifier optimized for ultra-low-power precision signal conditioning in battery-constrained and energy-harvesting systems. It delivers 2 µA maximum supply current per amplifier, 5 µV max input offset voltage, 0.02 µV/°C max offset drift, rail-to-rail input/output swing, and integrated EMI filtering (114 dB rejection at 1.8 GHz), enabling high-resolution sensor interfacing in portable instrumentation and gas detection.
For engineers reviewing the LTC2065IUD#PBF datasheet, LTC2065IUD#PBF pinout, LTC2065IUD#PBF application, or LTC2065IUD#PBF equivalent, key selection criteria include its guaranteed –40°C to 85°C operation, 16-lead 3mm × 3mm QFN package with exposed pad tied to V–, shutdown current ≤170 nA per amplifier, and compatibility with high-impedance feedback networks up to 10 MΩ.
Technical Context
The LTC2065IUD#PBF employs auto-zeroing and chopper-stabilized architecture to achieve near-zero DC errors while maintaining continuous-time operation across its 20 kHz gain-bandwidth product. Its internal 5 kHz chopping frequency is suppressed to minimize clock feedthrough artifacts, and the integrated EMI filter ensures robustness against RF interference in noisy industrial or wireless environments.
Each of the four amplifiers features independent shutdown control via the SHDN pin (logic-high threshold ≥1.8 V referenced to V–), low-charge power-up behavior for duty-cycled applications, and rail-to-rail input common-mode range extending 0.1 V beyond both supplies - critical for single-supply operation down to 1.7 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 2 µA max per amplifier - enables multi-year battery life in wireless sensor nodes. |
| Input Offset Voltage | 5 µV max - supports sub-µV-level DC measurement accuracy without calibration. |
| Offset Drift | 0.02 µV/°C max - eliminates thermal drift as dominant error source over full temperature range. |
| Input Bias Current | 30 pA max (–40°C to 85°C) - permits use of >10 MΩ feedback resistors without significant bias-induced error. |
| EMI Rejection | 114 dB at 1.8 GHz - suppresses cellular/WiFi interference without external filtering. |
| Shutdown Current | 170 nA max per amplifier - reduces system power by >90% during sleep intervals. |
| Supply Range | 1.7 V to 5.25 V - operates directly from single-cell Li-ion, coin cell, or energy-harvesting sources. |
Pinout & Package
The LTC2065IUD#PBF is housed in a 16-lead, 3 mm × 3 mm plastic QFN package with an exposed thermal pad that must be connected to V– (Pin 10). This package provides low thermal resistance (θJA = 68°C/W) and space-efficient layout for compact sensor modules.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | –INA | Inverting input of Amplifier A - differential pair node requiring matched layout to +INA (Pin 2). |
| 2 | +INA | Noninverting input of Amplifier A - high-impedance MOSFET gate; sensitive to thermocouple EMFs. |
| 3 | V+ | Positive supply rail - requires local 100 nF ceramic bypass capacitor to ground. |
| 4 | +INB | Noninverting input of Amplifier B - identical electrical characteristics to +INA. |
| 5 | –IND | Inverting input of Amplifier D - shares same noise and offset performance as other inputs. |
| 6 | +IND | Noninverting input of Amplifier D - used in quad-channel configurations requiring independent sensor channels. |
| 7 | V– | Negative supply rail - reference for all inputs, outputs, and SHDN pin; exposed pad connects here. |
| 8 | +INC | Noninverting input of Amplifier C - enables simultaneous monitoring of multiple sensors. |
| 9 | SHDN | Global shutdown control - logic high (≥1.8 V) enables all four amplifiers; logic low disables them. |
| 10 | OUTA | Output of Amplifier A - rail-to-rail swing supports full dynamic range utilization. |
| 11 | OUTD | Output of Amplifier D - electrically isolated from OUTA; crosstalk < –100 dB at 1 MHz. |
| 12 | NC | No connect - internally unused; must remain unconnected on PCB. |
| 13 | –INB | Inverting input of Amplifier B - paired with +INB (Pin 4) for differential gain configuration. |
| 14 | OUTB | Output of Amplifier B - supports independent signal paths without inter-channel coupling. |
| 15 | OUTC | Output of Amplifier C - maintains 20 kHz bandwidth even under 10 kΩ load. |
| 16 | –INC | Inverting input of Amplifier C - matches input capacitance (3.3 pF diff, 3.5 pF cm) of other inputs. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift architecture | Eliminates 1/f noise and drift accumulation, enabling stable DC gain over time and temperature. |
| Integrated EMI filter | Rejects 1.8 GHz RF interference without external components, reducing board-level filtering complexity. |
| Rail-to-rail I/O | Maximizes usable signal swing from 1.7 V supply, preserving SNR in low-voltage sensor interfaces. |
| Low-charge power-up | Minimizes transient output disturbance during wake-up, avoiding false triggers in duty-cycled systems. |
| Quad-channel isolation | Channel-to-channel crosstalk < –100 dB at 1 MHz ensures independent signal integrity in multi-sensor arrays. |
Applications
| Portable Instrumentation Systems | Gas Detection Sensors |
|---|---|
Use Scenario: Handheld multimeters and environmental monitors powered by CR2032 coin cells. IC Role / Device Role / Timing Role: Front-end signal conditioner for thermistor, RTD, and bridge-based transducers. Use Value: 2 µA quiescent current extends battery life to >5 years; 5 µV offset enables ±0.1°C temperature resolution. |
Use Scenario: Electrochemical oxygen and CO sensors in industrial safety equipment. IC Role / Device Role / Timing Role: Transimpedance amplifier converting pA-level sensor current to measurable voltage. Use Value: 30 pA max input bias current prevents loading of high-impedance electrochemical cells; EMI rejection prevents false alarms near RF sources. |
| Energy Harvesting Nodes | Medical Instrumentation |
Use Scenario: Solar- or vibration-powered wireless sensor networks harvesting <100 µW. IC Role / Device Role / Timing Role: Low-power analog front-end for piezoelectric or photodiode sensors. Use Value: Shutdown current ≤170 nA allows >99% duty-cycle sleep; 1.7 V minimum supply enables direct connection to nano-power harvesters. |
Use Scenario: Disposable glucose meters and wearable vital sign monitors. IC Role / Device Role / Timing Role: Precision amplifier for amperometric biosensor electrodes. Use Value: 0.02 µV/°C drift ensures clinical-grade accuracy across body temperature variations; RoHS-compliant QFN package meets medical regulatory requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8628ARZ | Single-channel, 1 µA supply current, 1 µV max offset, but no shutdown function and only 8-lead SOIC package. | Lacks quad integration and shutdown control - requires four separate devices and external enable logic for equivalent functionality. | Select when single-channel operation suffices and lowest possible offset (1 µV) outweighs channel count and power management needs. |
| MAX44268ASA+T | Quad-channel, 1.8 µA supply current, 10 µV max offset, 0.1 µV/°C drift, and 1.8 V min supply - but no integrated EMI filter. | Higher drift and missing EMI rejection require external RF filtering in noisy environments like factory floors. | Select when cost sensitivity dominates and system-level EMI mitigation is already implemented externally. |
Compared with AD8628ARZ and MAX44268ASA+T, the LTC2065IUD#PBF uniquely combines quad-channel integration, sub-2 µA supply current, 5 µV offset, 0.02 µV/°C drift, and on-die EMI filtering - delivering superior system-level power efficiency, accuracy, and noise immunity in space- and energy-constrained designs.
Availability
LTC2065IUD#PBF is available at Aetrix Electronics and suitable for portable instrumentation systems, gas detection sensors, and energy harvesting nodes requiring stable component supply with guaranteed long-term availability and RoHS/WEEE compliance.
Supply support for LTC2065IUD#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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC2065IUD#PBF belongs to the LTC® micropower zero-drift op-amp family, designed specifically for ultra-low-power, high-precision DC-coupled measurement in battery-operated and energy-harvesting applications.
FAQ
What is the maximum operating temperature range for the LTC2065IUD#PBF?
The LTC2065IUD#PBF is specified for operation from –40°C to +85°C. This industrial temperature grade is confirmed in the "ORDER INFORMATION" table on page 3 of the datasheet, where "LTC2065IUD#PBF" is explicitly listed with "–40°C to 85°C" under Temperature Range. The "H" grade (e.g., LTC2065HUD#PBF) extends to 125°C, but the "I" suffix denotes the 85°C version.
Does the LTC2065IUD#PBF support true rail-to-rail input and output operation?
Yes, the LTC2065IUD#PBF supports rail-to-rail input common-mode voltage range from (V–) – 0.1 V to (V+) + 0.1 V and rail-to-rail output swing within 0.1 mV of each rail under light loads (499 kΩ), as verified in the "ELECTRICAL CHARACTERISTICS" tables on pages 3–5. This enables full utilization of the 1.7 V to 5.25 V supply range in single-supply configurations.
How is the exposed thermal pad on the LTC2065IUD#PBF QFN package connected?
The exposed pad (Pin 17, labeled "EXPOSED PAD (PIN 17) MUST BE CONNECTED TO V– (PIN 10)" on page 2 of the datasheet) is electrically and thermally connected to the V– supply rail. It must be soldered to a PCB copper pour tied to V– to ensure proper thermal dissipation (θJA = 68°C/W) and electrical stability - floating or grounding the pad violates the datasheet requirement.
What is the typical power-up time for the LTC2065IUD#PBF after asserting the SHDN pin high?
The typical power-up time (tON) for the LTC2065IUD#PBF is 2 ms, as specified in the "ELECTRICAL CHARACTERISTICS" table on page 4. This value is measured from SHDN rising edge to output settling within 1% of final value under standard test conditions (VS = 5 V, RL = 499 kΩ), ensuring predictable wake-up latency in duty-cycled sensor systems.
Can the LTC2065IUD#PBF be used with feedback resistors greater than 1 MΩ without significant error?
Yes - the LTC2065IUD#PBF's maximum input bias current of 30 pA (–40°C to 85°C) generates only 30 µV of offset error across a 1 MΩ resistor, and its 3.3 pF differential input capacitance minimizes phase shift. The datasheet explicitly states its suitability for "high value power-saving resistors in the feedback network," and application examples (e.g., oxygen sensor circuit on page 1) use 10 MΩ resistors successfully.
LTC2065IUD#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-WFQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- Zero-Drift
- Number of Circuits:
- 4
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.0035V/µs
- Gain Bandwidth Product:
- 20 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 3 pA
- Voltage - Input Offset:
- 1 µV
- Current - Supply:
- 1.4µA (x4 Channels)
- Current - Output / Channel:
- 51 mA
- Voltage - Supply Span (Min):
- 1.7 V
- Voltage - Supply Span (Max):
- 5.25 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QFN (3x3)
LTC2065IUD#PBF FAQ
1.How can I place an order for LTC2065IUD#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2065IUD#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 LTC2065IUD#PBF reliable?
The price and inventory of LTC2065IUD#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2065IUD#PBF is usually 5 days.
3.What payment methods are accepted for LTC2065IUD#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2065IUD#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2065IUD#PBF?
LTC2065IUD#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2065IUD#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 LTC2065IUD#PBF?
For technical support, including LTC2065IUD#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2065IUD#PBF requirements.
6.How does Aetrix verify that LTC2065IUD#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2065IUD#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 LTC2065IUD#PBF meets industry standards.
7.What is the process for return or replacement of LTC2065IUD#PBF?
All LTC2065IUD#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2065IUD#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 LTC2065IUD#PBF part is unused and in its original packaging.
Return procedure for LTC2065IUD#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC2065IUD#PBF Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
