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Analog Devices Inc. LTC2065HUD#PBF
- Part No.:
- LTC2065HUD#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
LTC2065HUD#PBF.pdf
- Description:
- IC OPAMP ZER-DRIFT 4CIRC 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,481
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Product details
Overview
LTC2065HUD#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 operation, and integrated EMI filtering (114 dB rejection at 1.8 GHz), enabling high-resolution sensor interfacing in portable medical devices and wireless gas sensors.
For engineers reviewing the LTC2065HUD#PBF datasheet, LTC2065HUD#PBF pinout, LTC2065HUD#PBF application, or LTC2065HUD#PBF equivalent, this page provides verified circuit role, validated 16-pin QFN package mapping, confirmed shutdown functionality (170 nA max), precise thermal performance over –40°C to 125°C, and real-world alternatives with documented functional trade-offs.
Technical Context
The LTC2065HUD#PBF implements auto-zeroing and chopper stabilization in a single architecture to eliminate 1/f noise and minimize DC errors without introducing idle tones. Its internal 5 kHz chopping frequency is suppressed via advanced clock feedthrough cancellation, enabling stable DC-coupled gain stages up to 20 kHz bandwidth.
Each of its four amplifiers features independent shutdown control referenced to V–, low-charge power-up (<2 ms), and MOSFET input stage delivering ≤100 pA max input bias current across –40°C to 125°C - critical for high-impedance feedback networks in oxygen and temperature sensing front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 2 µA max per amplifier - enables multi-year battery life in duty-cycled IoT nodes. |
| Input Offset Voltage | 5 µV max - supports sub-100 ppm measurement accuracy without calibration. |
| Offset Drift | 0.02 µV/°C max - ensures <1 µV total drift over full –40°C to 125°C range. |
| Input Bias Current | 100 pA max over –40°C to 125°C - permits use of >10 MΩ feedback resistors without significant error. |
| EMI Rejection | 114 dB at 1.8 GHz - suppresses cellular/Wi-Fi interference in unshielded sensor modules. |
| Shutdown Current | 170 nA max per amplifier - reduces system quiescent power by >99% during sleep cycles. |
| Operating Supply | 1.7 V to 5.25 V - compatible with single-cell Li-ion, coin cell, and energy-harvesting sources. |
Pinout & Package
LTC2065HUD#PBF is housed in a 16-lead (3 mm × 3 mm) plastic QFN package with exposed pad connected to V–. Thermal resistance θJA = 68°C/W; θJC = 5.5°C/W. Pin 17 (exposed pad) must be soldered to V– plane for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 6, 13 | +IN (A/B/C/D) | Noninverting inputs for each of four independent amplifiers. |
| 2, 4, 7, 12 | –IN (A/B/C/D) | Inverting inputs; support precision differential and instrumentation configurations. |
| 5, 8, 11, 14 | OUT (A/B/C/D) | Rail-to-rail output terminals; drive 10 kΩ loads to within 7 mV of rails at 5 V supply. |
| 9 | V+ | Positive supply rail; requires local 100 nF ceramic bypass capacitor to ground. |
| 10 | V– | Negative supply rail; exposed pad (Pin 17) must be connected to this node. |
| 15 | SHDN | Active-high shutdown control; logic high ≥1.8 V (referred to V–) enables all amplifiers. |
| 16 | NC | No connect - left floating or grounded per layout best practices; no internal connection. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift architecture | Combines auto-zeroing and chopping to achieve <5 µV offset and <0.02 µV/°C drift without external calibration. |
| Integrated EMI filter | On-die RC network rejects 114 dB of 1.8 GHz RF interference - eliminates need for external ferrite beads or LC filters. |
| Low-charge power-up | <2 ms wake-up time with minimal output transient - prevents signal corruption during duty-cycle transitions. |
| Rail-to-rail I/O | Supports full-scale signal swing from V– to V+ across 1.7–5.25 V supply - maximizes dynamic range in low-voltage systems. |
| Quad-channel isolation | Channel crosstalk <–120 dB at 100 kHz - enables simultaneous high-gain conditioning of multiple sensor signals on one die. |
Applications
| Oxygen Sensor Signal Conditioning | Wireless Temperature Node Front-End |
|---|---|
|
Use Scenario: Amplifying microvolt-level output from electrochemical oxygen cells (e.g., City Technology 40XV) in handheld air quality monitors. IC Role / Device Role / Timing Role: Primary signal conditioner with gain-of-40, low-noise DC-coupled stage preceding ADC. Use Value: 2 µA per amplifier supply current extends AA battery life to >5 years; 100 pA max input bias avoids loading high-impedance sensor electrodes. |
Use Scenario: Interfacing platinum RTD or thermistor in battery-powered industrial temperature loggers with BLE transmission. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end with programmable gain and shutdown control synchronized to radio duty cycle. Use Value: 0.02 µV/°C drift ensures <0.1°C measurement stability over operating temperature; 170 nA shutdown current minimizes sleep-mode leakage. |
| Portable Medical ECG Preamp | Energy-Harvesting Gas Detector |
|
Use Scenario: Low-noise, high-input-impedance first-stage amplification of biopotential signals in wearable ECG patches. IC Role / Device Role / Timing Role: Single-supply, rail-to-rail input op-amp configured as noninverting amplifier with 100 kΩ feedback. Use Value: 5 µV max offset eliminates baseline wander; integrated EMI filter rejects 2.4 GHz Wi-Fi noise without additional shielding. |
Use Scenario: Signal conditioning for catalytic bead or NDIR gas sensors powered by solar-harvested energy in remote environmental stations. IC Role / Device Role / Timing Role: Ultra-low-quiescent amplifier enabling continuous analog monitoring while harvesting energy intermittently. Use Value: 1.7 V minimum supply allows operation directly from supercapacitor storage; shutdown mode draws only 170 nA until next wake-up event. |
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-REEL7 | Single-channel, 1 µA supply current, 1 µV offset, but no shutdown and only 85°C max operating temp. | Suitable for space-constrained single-amplifier designs where quad integration is unnecessary. | Select when board area is critical and thermal range is limited to –40°C to 85°C. |
| OPA333AIDR | Dual-channel, 17 µA supply current, 10 µV offset, shutdown available, but higher power and lower EMI rejection (85 dB). | Better for cost-sensitive dual-channel applications where 2 µA quiescent current is not mandatory. | Choose when higher bandwidth (350 kHz) and dual configuration outweigh micropower requirements. |
Compared with AD8628ARZ-REEL7 and OPA333AIDR, the LTC2065HUD#PBF uniquely combines quad integration, 2 µA per amplifier supply current, –40°C to 125°C operation, and 114 dB EMI rejection - making it the only option for compact, robust, multi-sensor nodes requiring long-life battery or energy-harvesting operation.
Availability
LTC2065HUD#PBF is available at Aetrix Electronics and suitable for portable instrumentation systems, wireless mesh networks, and low-power sensor conditioning requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC2065HUD#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 LTC2065HUD#PBF belongs to the LTC206x family of zero-drift micropower op-amps, designed specifically for ultra-low-power, high-precision signal acquisition in energy-constrained sensor nodes and portable medical devices.
FAQ
What is the maximum operating temperature range for the LTC2065HUD#PBF?
The LTC2065HUD#PBF is rated for continuous operation from –40°C to +125°C ambient temperature, with full electrical specifications guaranteed across this range. This H-grade qualification makes it suitable for under-hood automotive sensor interfaces and industrial equipment deployed in hot environments where standard I-grade parts (–40°C to 85°C) would fail.
Does the LTC2065HUD#PBF require external capacitors for stability?
Yes - the LTC2065HUD#PBF requires a 100 nF ceramic capacitor between V+ and V– pins, placed as close as possible to the device. For capacitive loads >100 pF, a small series resistor (10–50 Ω) should be added in series with the output to maintain phase margin, as confirmed by the closed-loop gain vs. frequency plots in the datasheet.
How does the SHDN pin function on the LTC2065HUD#PBF?
The SHDN pin on the LTC2065HUD#PBF is an active-high control referenced to V–. When pulled ≥1.8 V above V–, all four amplifiers operate normally; when tied to V–, supply current drops to ≤170 nA per amplifier. The pin draws ≤150 nA sink current and must never be left floating - a 100 kΩ pull-down resistor is recommended for default disable.
Can the LTC2065HUD#PBF drive a 10 kΩ load rail-to-rail?
Yes - the LTC2065HUD#PBF guarantees rail-to-rail output swing into 10 kΩ loads: VOH ≤7 mV below V+ and VOL ≤15 mV above V– at 5 V supply and 25°C. Performance degrades slightly at temperature extremes and lower supplies, but remains within 20 mV of rails across the full –40°C to 125°C range per the Electrical Characteristics table.
Is the exposed pad of the LTC2065HUD#PBF electrically connected?
Yes - the exposed pad (Pin 17) of the LTC2065HUD#PBF is internally connected to V– and must be soldered to a PCB copper pour tied to the V– net. This connection is mandatory for both thermal dissipation (θJA = 68°C/W assumes proper pad soldering) and electrical stability, as omitting it may cause increased offset drift and oscillation.
LTC2065HUD#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 ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QFN (3x3)
LTC2065HUD#PBF FAQ
1.How can I place an order for LTC2065HUD#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2065HUD#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 LTC2065HUD#PBF reliable?
The price and inventory of LTC2065HUD#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2065HUD#PBF is usually 5 days.
3.What payment methods are accepted for LTC2065HUD#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2065HUD#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2065HUD#PBF?
LTC2065HUD#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2065HUD#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 LTC2065HUD#PBF?
For technical support, including LTC2065HUD#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2065HUD#PBF requirements.
6.How does Aetrix verify that LTC2065HUD#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2065HUD#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 LTC2065HUD#PBF meets industry standards.
7.What is the process for return or replacement of LTC2065HUD#PBF?
All LTC2065HUD#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2065HUD#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 LTC2065HUD#PBF part is unused and in its original packaging.
Return procedure for LTC2065HUD#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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