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Analog Devices Inc. LTC6082CDHC#PBF
- Part No.:
- LTC6082CDHC#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-WFDFN Exposed Pad
- Datasheet:
-
LTC6082CDHC#PBF.pdf
- Description:
- IC CMOS 4 CIRCUIT 16DFN
- Quantity:
- Payment:
- Shipping:
Inventory:514
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Product details
Overview
LTC6082CDHC#PBF from Analog Devices (formerly Linear Technology) is a quad precision rail-to-rail input/output CMOS operational amplifier optimized for microvolt-level signal conditioning in high-impedance sensor interfaces. It delivers 70 µV max offset voltage, 0.8 µV/°C max offset drift, 1 pA max input bias current at 25°C, 1.3 µVP-P 0.1Hz–10Hz noise, and 3.6 MHz gain-bandwidth product - enabling accurate amplification in thermocouple, strain gauge, and photodiode applications.
For engineers reviewing the LTC6082CDHC#PBF datasheet, LTC6082CDHC#PBF pinout, LTC6082CDHC#PBF application, or LTC6082CDHC#PBF equivalent, key selection criteria include its 16-lead DFN (5mm × 3mm) package with exposed pad tied to V–, independent shutdown per amplifier, ±0.5 mV output swing near rails at 0.5 mA load, and guaranteed operation from 0°C to 70°C with 2.7V–5.5V supply.
Technical Context
The LTC6082CDHC#PBF integrates dual PMOS/NMOS input stages to achieve true rail-to-rail common-mode input range (V– to V+) and rail-to-rail output swing (within ±0.5 mV of rails at 0.5 mA). Its 120 dB open-loop gain and 100 dB min CMRR ensure stable DC precision in high-gain configurations like instrumentation amplifiers and threshold detectors.
Each amplifier consumes only 330 µA at 3V supply and features independent active-low shutdown pins (SHDN_A through SHDN_D), reducing quiescent current to ≤2 µA per channel. The device is unity-gain stable and supports capacitive loads up to 200 pF without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Offset Voltage | ±70 µV max at 25°C - enables sub-millivolt accuracy in DC-coupled sensor front-ends without trimming. |
| Input Bias Current | 1 pA max at 25°C - preserves signal integrity with >1 GΩ source impedances (e.g., piezoelectric sensors). |
| 0.1Hz–10Hz Noise | 1.3 µVP-P - critical for low-frequency measurements like thermocouple or pH sensing where flicker noise dominates. |
| Gain-Bandwidth Product | 3.6 MHz - supports stable closed-loop gains up to ~36 at 100 kHz for anti-aliasing or active filtering. |
| CMRR / PSRR | 100 dB / 98 dB min - rejects power supply ripple and common-mode interference in noisy industrial environments. |
| Supply Voltage Range | 2.7V to 5.5V - compatible with single-supply 3.3V and 5V systems without level-shifting circuitry. |
| Shutdown Current | ≤2 µA per amplifier - allows dynamic power gating in battery-powered data loggers or portable instrumentation. |
Pinout & Package
Package: 16-lead plastic DFN (5 mm × 3 mm), exposed thermal pad connected to V–. RoHS-compliant, lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 8, 9, 16 | OUTA, OUTB, OUTC, OUTD | Amplifier outputs - rail-to-rail swing, high-impedance in shutdown mode. |
| 2, 4, 11, 13 | –INA, –INB, –INC, –IND | Inverting inputs - matched pair for differential gain stages; low input capacitance (3 pF diff). |
| 3, 5, 12, 14 | +INA, +INB, +INC, +IND | Noninverting inputs - full rail-to-rail common-mode range (V– to V+); NMOS/PMOS auto-selection. |
| 6, 7, 10, 15 | SHDN_A, SHDN_B, SHDN_C, SHDN_D | Independent active-low shutdown controls - each disables one amplifier; internal pull-up to V+ when floating. |
| 1, 16 (exposed pad) | V– / Thermal Pad | Negative supply connection and primary thermal path - must be soldered to PCB ground plane for thermal stability. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O | Input common-mode range extends to both supply rails; output swings within ±0.5 mV of V+ and V– at 0.5 mA load. |
| Ultra-low input bias | 1 pA max at 25°C - eliminates significant error in high-Z transducer interfaces (e.g., glass electrode pH sensors). |
| Low 1/f noise | 1.3 µVP-P (0.1Hz–10Hz) - ensures stable baseline in slow-sampling applications like environmental monitoring. |
| Independent shutdown | Four dedicated SHDN pins allow selective channel disabling - reduces system power by >99% per idle amplifier. |
| High DC precision | 70 µV max VOS, 0.8 µV/°C max drift - meets requirements for 16-bit+ ADC front-ends without calibration. |
Applications
| Thermocouple Amplifier | Strain Gauge Interface |
|---|---|
|
Use Scenario: Amplifying µV-level K-type thermocouple outputs across 0°C–500°C range with cold-junction compensation. IC Role / Device Role / Timing Role: Primary signal-conditioning amplifier in two-op-amp instrumentation topology with gain trim and CMRR optimization. Use Value: 1 pA input bias contributes <0.05°C error; 70 µV offset translates to <0.5°C offset - enabling direct 0.1°C resolution. |
Use Scenario: Reading Wheatstone bridge outputs from metal foil strain gauges in load cells or pressure sensors. IC Role / Device Role / Timing Role: Low-noise, high-input-impedance buffer and gain stage for bridge excitation and differential amplification. Use Value: 1.3 µVP-P noise and 100 dB CMRR reject bridge imbalance and EMI, preserving <0.01% full-scale accuracy. |
| Photodiode Transimpedance | Microvolt Threshold Detection |
|
Use Scenario: Converting nanoamp photocurrents from low-light photodiodes into measurable voltage signals. IC Role / Device Role / Timing Role: Transimpedance amplifier with guarded input and low-bias-current feedback network. Use Value: 1 pA input bias avoids saturation in high-RF configurations; rail-to-rail output drives ADC reference directly. |
Use Scenario: Detecting sub-millivolt fault conditions (e.g., battery cell imbalance, leakage current thresholds). IC Role / Device Role / Timing Role: Precision comparator front-end with programmable hysteresis and low-drift reference buffering. Use Value: 70 µV offset and 0.8 µV/°C drift enable reliable 100 µV threshold detection over temperature without recalibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC2052IGN#PBF | Zero-drift architecture; 0.5 µV max VOS, 0.015 µV/°C drift; higher 3.5 MHz GBW but 500 µA supply current per amp. | Better long-term DC stability in unattended systems; less suitable for battery-constrained designs due to higher quiescent current. | Choose LTC2052IGN#PBF when ultra-low drift dominates over power; LTC6082CDHC#PBF preferred for lower power and cost-sensitive precision analog. |
| LTC6078CGN#PBF | Dual-channel version; identical specs except 8-lead SSOP package, no shutdown pins, and 0.2 µV/°C max drift (tighter than LTC6082). | Lacks per-amplifier shutdown; smaller footprint but no independent channel control - limits flexibility in multi-channel power-gated systems. | Select LTC6078CGN#PBF for space-constrained dual-channel use; LTC6082CDHC#PBF remains optimal for quad-channel, independently controllable precision sensing. |
Compared with LTC2052IGN#PBF and LTC6078CGN#PBF, the LTC6082CDHC#PBF uniquely balances quad-channel count, per-amplifier shutdown, 330 µA/channel supply current, and 70 µV offset - making it the most efficient solution for scalable, low-power, high-channel-count precision sensor arrays.
Availability
LTC6082CDHC#PBF is available at Aetrix Electronics and suitable for thermocouple amplification, strain gauge readout, photodiode signal conditioning, and microvolt-threshold detection requiring stable component supply across industrial, test & measurement, and medical instrumentation programs.
Supply support for LTC6082CDHC#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. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and digital signal processing ICs for precision measurement, power management, and connectivity.
The LTC6082 belongs to Linear's precision op amp product line, engineered specifically for DC-critical applications demanding ultra-low offset, drift, and input bias - including sensor signal chains, medical diagnostics, and scientific instrumentation.
FAQ
What is the operating temperature range for LTC6082CDHC#PBF?
The LTC6082CDHC#PBF is specified for 0°C to 70°C ambient operating temperature. This "C" grade variant is tested and guaranteed over this range; it is not rated for extended industrial (–40°C to 85°C) or automotive (–40°C to 125°C) temperatures. For wider ranges, consider LTC6082IDHC#PBF (–40°C to 85°C) or LTC6082HGN#PBF (–40°C to 125°C).
Does LTC6082CDHC#PBF support rail-to-rail output swing under load?
Yes, the LTC6082CDHC#PBF delivers rail-to-rail output swing: within ±0.5 mV of V+ and V– at 0.5 mA load, and within ±240 mV at 5 mA sink/source current (V+ = 5V). This performance holds across the full 0°C to 70°C range and enables direct interfacing with 3.3V or 5V ADCs without level-shifting circuitry.
How does the shutdown function work on LTC6082CDHC#PBF?
The LTC6082CDHC#PBF has four independent active-low shutdown pins (SHDN_A through SHDN_D, pins 6, 7, 10, 15). Driving any SHDN pin ≤0.8 V (at 3V supply) disables its corresponding amplifier, reducing supply current to ≤2 µA. When floating, internal current sources pull each SHDN pin to V+, enabling normal operation. Outputs go high-impedance in shutdown mode.
Can LTC6082CDHC#PBF drive capacitive loads?
Yes, the LTC6082CDHC#PBF is stable driving up to 200 pF in unity-gain configuration. Stability improves with higher closed-loop gain. For loads >200 pF, adding a small series resistor (e.g., 10–50 Ω) between output and load restores phase margin. This capability simplifies anti-aliasing filter design and eases PCB layout in high-speed precision circuits.
What is the purpose of the exposed thermal pad on LTC6082CDHC#PBF?
The exposed pad on the LTC6082CDHC#PBF is electrically and thermally connected to V–. It must be soldered to a PCB copper pour tied to the system V–/ground plane to ensure thermal stability, minimize offset drift under self-heating, and maintain parametric performance. Omitting this connection risks exceeding junction temperature limits and degrading DC precision.
LTC6082CDHC#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-WFDFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- CMOS
- Number of Circuits:
- 4
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 1V/µs
- Gain Bandwidth Product:
- 3.5 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.2 pA
- Voltage - Input Offset:
- 90 µV
- Current - Supply:
- 330µA (x4 Channels)
- Current - Output / Channel:
- 24 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-DFN (5x3)
LTC6082CDHC#PBF FAQ
1.How can I place an order for LTC6082CDHC#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6082CDHC#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 LTC6082CDHC#PBF reliable?
The price and inventory of LTC6082CDHC#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6082CDHC#PBF is usually 5 days.
3.What payment methods are accepted for LTC6082CDHC#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6082CDHC#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6082CDHC#PBF?
LTC6082CDHC#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6082CDHC#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 LTC6082CDHC#PBF?
For technical support, including LTC6082CDHC#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6082CDHC#PBF requirements.
6.How does Aetrix verify that LTC6082CDHC#PBF is sourced from the original manufacturer or authorized distributors?
All LTC6082CDHC#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 LTC6082CDHC#PBF meets industry standards.
7.What is the process for return or replacement of LTC6082CDHC#PBF?
All LTC6082CDHC#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6082CDHC#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 LTC6082CDHC#PBF part is unused and in its original packaging.
Return procedure for LTC6082CDHC#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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