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Analog Devices Inc. LTC2055HVIDD#TRPBF
- Part No.:
- LTC2055HVIDD#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
LTC2055HVIDD#TRPBF.pdf
- Description:
- IC OPAMP ZERO-DRIFT 2 CIRC 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,930
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Product details
Overview
LTC2055HVIDD#TRPBF from Analog Devices (formerly Linear Technology) is a dual, micropower, zero-drift operational amplifier in an 8-lead 3mm × 3mm DFN package, rated for –40°C to 85°C operation. It delivers 3μV max input offset voltage, 30nV/°C max offset drift, 130μA per amplifier supply current, rail-to-rail output swing, and 500kHz gain-bandwidth product-enabling high-accuracy signal conditioning in battery-powered precision instrumentation.
For engineers reviewing the LTC2055HVIDD#TRPBF datasheet, LTC2055HVIDD#TRPBF pinout, LTC2055HVIDD#TRPBF application, or LTC2055HVIDD#TRPBF equivalent, key selection criteria include guaranteed industrial-temperature zero-drift performance, DFN thermal efficiency for space-constrained PCBs, low-frequency noise (1.6μVP-P, DC–10Hz), and compatibility with single-supply (2.7V–6V) or split-supply (±2.5V) configurations.
Technical Context
The LTC2055HVIDD#TRPBF employs auto-zeroing architecture with ~1kHz internal clock to continuously correct input offset and drift, enabling near-zero DC error over temperature and common-mode voltage. Its input stage supports rail-to-rail common-mode range (V– to V+ – 0.5V) and features 1pA typical input bias current at 25°C.
It achieves 140dB typical open-loop gain, 130dB typical PSRR and CMRR, and rail-to-rail output drive into 5kΩ loads-making it suitable for high-gain, low-error transducer interfaces where long-term stability and minimal power consumption are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | ≤3μV max (–40°C to 85°C): ensures sub-microvolt baseline error in precision sensor front-ends without calibration. |
| Offset Drift | ≤30nV/°C max (–40°C to 85°C): guarantees <100nV total drift across full industrial range-critical for thermocouple or strain gauge amplifiers. |
| Supply Current | 130μA per amplifier (typ): enables dual-channel precision amplification in ultra-low-power systems (e.g., portable medical devices). |
| Gain-Bandwidth Product | 500kHz: supports stable closed-loop gains up to ~500 at 1kHz, sufficient for DC-coupled active filters and data acquisition front-ends. |
| Input Noise (DC–10Hz) | 1.6μVP-P (typ): provides high-resolution measurement capability for slow-varying signals like load cells or pH sensors. |
| Output Swing | Rail-to-rail (e.g., 4.985V at VS = 5V, RL = 100kΩ): maximizes dynamic range and simplifies level-shifting in single-supply designs. |
| CMRR / PSRR | 130dB (typ): rejects >1M:1 common-mode or supply ripple-essential for accurate current sensing in noisy industrial environments. |
Pinout & Package
Package: 8-lead (3mm × 3mm × 0.8mm) plastic DFN (DD package); exposed metal pad internally connected to V–; JEDEC MO-229 variation; θJA = 160°C/W with minimal PCB copper.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT A | Amplifier A output | Capable of rail-to-rail sourcing/sinking; requires local decoupling for stability in high-gain configurations. |
| 2 - –IN A | Inverting input A | High-impedance node; sensitive to layout-induced leakage and clock feedthrough-keep trace short and guard with ground. |
| 3 - +IN A | Non-inverting input A | DC-coupled input; accepts common-mode voltages from V– to V+ – 0.5V; avoid >10kΩ source resistance to minimize clock feedthrough. |
| 4 - V– | Negative supply / reference | Internally connects to exposed DFN pad; must be solidly tied to lowest system potential for optimal PSRR and thermal performance. |
| 5 - V+ | Positive supply | Accepts 2.7V–6V single supply or ±2.5V split supply; bypass with ≥0.1μF ceramic capacitor close to pin. |
| 6 - OUT B | Amplifier B output | Independent output channel; shares same supply rails and thermal environment as OUT A-consider crosstalk in high-speed applications. |
| 7 - –IN B | Inverting input B | Functionally identical to –IN A; use separate feedback networks to prevent inter-channel coupling. |
| 8 - +IN B | Non-inverting input B | Matches +IN A specs; enables true differential or dual-sensor readout without external multiplexing. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift auto-zeroing | Eliminates thermally induced offset drift-no manual nulling required across –40°C to 85°C operating range. |
| Rail-to-rail output | Delivers full supply voltage swing into 100kΩ loads, preserving signal fidelity in low-voltage, single-supply systems. |
| Ultra-low input bias current | 1pA typical at 25°C enables high-impedance sensor interfacing (e.g., piezoelectric or pH electrodes) without significant loading error. |
| Low 1/f noise | 1.6μVP-P (DC–10Hz) supports high-resolution DC measurements where flicker noise dominates error budget. |
| High PSRR/CMRR | 130dB rejection minimizes impact of supply ripple and common-mode interference in industrial sensor nodes and motor control feedback loops. |
Applications
| Thermocouple Amplification | Electronic Scales |
|---|---|
Use Scenario: Amplifying microvolt-level thermocouple outputs (e.g., Type K, 41μV/°C) in HVAC or furnace controllers with ambient temperature ranging from –20°C to 70°C. IC Role / Device Role / Timing Role: Precision DC-coupled instrumentation amplifier front-end, rejecting cold-junction compensation errors via ultra-low drift. Use Value: 3μV max offset and 30nV/°C drift ensure ≤0.1°C absolute accuracy over full industrial range without recalibration. | Use Scenario: Reading millivolt outputs from 4-wire load cells in portable weighing scales powered by two AA batteries (3V nominal). IC Role / Device Role / Timing Role: Dual-channel bridge amplifier providing gain and offset trimming in compact, battery-operated hardware. Use Value: 130μA per amplifier enables >1-year battery life while maintaining 24-bit effective resolution via low 1.6μVP-P noise floor. |
| Medical Instrumentation | High-Resolution Data Acquisition |
Use Scenario: Front-end amplification for ECG or EEG biopotential signals in handheld diagnostic devices requiring FDA-compliant DC accuracy and low power. IC Role / Device Role / Timing Role: Low-noise, low-drift gain stage before ADC; operates from 3.3V single supply with rail-to-rail output compatibility. Use Value: 1pA input bias avoids electrode polarization errors; 130dB CMRR suppresses 50/60Hz mains interference without aggressive filtering. | Use Scenario: Signal conditioning for 24-bit delta-sigma ADCs in programmable logic controller (PLC) analog input modules. IC Role / Device Role / Timing Role: Precision buffer and gain stage for DC-coupled voltage/current inputs with programmable ranges (±10V, 0–20mA). Use Value: Guaranteed –40°C to 85°C specs ensure metrology-grade linearity across extended environmental conditions without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual zero-drift op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8629ARZ | Single-supply only (2.7V–5.5V); 1μV max VOS but 50nV/°C max drift; 1.2MHz GBW; SOIC-8 package. | Better initial offset but higher drift limits long-term stability in uncalibrated systems; larger SOIC footprint increases board area. | Prefer AD8629ARZ when ultra-low initial offset dominates design requirements and thermal cycling is minimal. |
| LTC2055CMS8#TRPBF | Same core specs but in MSOP-8 package (3mm × 3mm × 1.1mm); θJA = 200°C/W vs. 160°C/W for DFN; no exposed thermal pad. | Higher thermal resistance reduces power handling in high-output-drive scenarios; MSOP eases hand-soldering but sacrifices thermal performance. | Choose LTC2055CMS8#TRPBF only if DFN reflow capability is unavailable and thermal margin exceeds 20°C. |
Compared with AD8629ARZ and LTC2055CMS8#TRPBF, the LTC2055HVIDD#TRPBF offers superior thermal efficiency (DFN package), tighter drift spec (30nV/°C), and guaranteed industrial-temperature performance-making it optimal for space-constrained, high-stability embedded instrumentation.
Availability
LTC2055HVIDD#TRPBF is available at Aetrix Electronics and suitable for thermocouple amplification, electronic scales, and medical instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC2055HVIDD#TRPBF 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 precision analog portfolio with rigorous automotive and industrial qualification standards.
The LTC2055HVIDD#TRPBF belongs to Linear's zero-drift op amp family, engineered specifically for DC-accurate signal conditioning in sensor interfaces where offset, drift, and low-frequency noise directly limit measurement resolution.
FAQ
What is the maximum operating temperature range for the LTC2055HVIDD#TRPBF?
The LTC2055HVIDD#TRPBF is specified for continuous operation from –40°C to +85°C. This industrial temperature grade is guaranteed by testing-not just characterized-and applies to all key parameters including input offset voltage, drift, supply current, and CMRR. The device remains functional beyond this range but without parametric guarantees.
Does the LTC2055HVIDD#TRPBF support single-supply operation?
Yes, the LTC2055HVIDD#TRPBF operates from a single 2.7V to 6V supply. Its input common-mode range extends from V– to V+ – 0.5V, and its rail-to-rail output can swing within 10mV of either rail under 5kΩ load-enabling true single-supply designs such as 3.3V sensor signal chains without level-shifting circuitry.
How does the auto-zeroing clock affect system performance in the LTC2055HVIDD#TRPBF?
The LTC2055HVIDD#TRPBF uses a ~1kHz internal auto-zeroing clock. Its primary impact is low-level clock feedthrough (<0.2μVRMS at 1kHz, input-referred), which appears as a tone in the output spectrum. This is mitigated by keeping input source impedance <10kΩ and using feedback capacitors to limit closed-loop bandwidth-standard practice in precision DC applications.
Is the exposed pad on the LTC2055HVIDD#TRPBF's DFN package electrically connected?
Yes, the underside metal pad of the LTC2055HVIDD#TRPBF's DD package is internally connected to the V– pin. It must be soldered to a PCB copper pour tied to the system's most negative potential to achieve the specified θJA = 160°C/W and optimal PSRR/CMRR performance. Leaving it floating degrades thermal and electrical behavior.
Can the LTC2055HVIDD#TRPBF drive capacitive loads directly?
The LTC2055HVIDD#TRPBF is not unity-gain stable into pure capacitive loads. Driving >100pF directly may cause peaking or oscillation. For capacitive loads (e.g., ADC input capacitors or long cables), use an isolation resistor (≥100Ω) between the amplifier output and the capacitance, or add a small series resistor (20–50Ω) with a feedback capacitor to maintain phase margin.
LTC2055HVIDD#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Zero-Drift
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.5V/µs
- Gain Bandwidth Product:
- 500 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 3 pA
- Voltage - Input Offset:
- 0.5 µV
- Current - Supply:
- 150µA (x2 Channels)
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 11 V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-DFN (3x3)
LTC2055HVIDD#TRPBF FAQ
1.How can I place an order for LTC2055HVIDD#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2055HVIDD#TRPBF 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 LTC2055HVIDD#TRPBF reliable?
The price and inventory of LTC2055HVIDD#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2055HVIDD#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2055HVIDD#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2055HVIDD#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2055HVIDD#TRPBF?
LTC2055HVIDD#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2055HVIDD#TRPBF 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 LTC2055HVIDD#TRPBF?
For technical support, including LTC2055HVIDD#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2055HVIDD#TRPBF requirements.
6.How does Aetrix verify that LTC2055HVIDD#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2055HVIDD#TRPBF 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 LTC2055HVIDD#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2055HVIDD#TRPBF?
All LTC2055HVIDD#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2055HVIDD#TRPBF, 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 LTC2055HVIDD#TRPBF part is unused and in its original packaging.
Return procedure for LTC2055HVIDD#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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