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Analog Devices Inc. LTC2051HVIDD#PBF
- Part No.:
- LTC2051HVIDD#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
LTC2051HVIDD#PBF.pdf
- Description:
- IC OPAMP ZERO-DRIFT 2 CIRC 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:117
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Product details
Overview
LTC2051HVIDD#PBF from Analog Devices (formerly Linear Technology) is a dual zero-drift operational amplifier in an 8-lead 3mm × 3mm DFN package, delivering ultra-low input offset voltage (±3 μV max), near-zero drift (±30 nV/°C max), and rail-to-rail output swing. It operates from single 2.7V or dual ±5V supplies and supports high-precision DC-coupled applications including thermocouple amplification, strain gauge signal conditioning, and medical instrumentation front-ends.
For engineers reviewing the LTC2051HVIDD#PBF datasheet, LTC2051HVIDD#PBF pinout, LTC2051HVIDD#PBF application, or LTC2051HVIDD#PBF equivalent, key selection criteria include guaranteed –40°C to 85°C operation, HV-grade supply tolerance (up to ±5V), low 1.5 μVP-P (0.01–10 Hz) noise, 140 dB open-loop gain, and 130 dB PSRR/CMRR - all validated for precision sensor interfaces requiring long-term DC stability.
Technical Context
The LTC2051HVIDD#PBF employs autozeroing architecture with a 7.5 kHz internal sampling clock to continuously correct input offset and drift, enabling sub-microvolt DC accuracy over temperature and time. Its chopper-stabilized core achieves near-zero input bias current (±90 pA typ at 25°C) and supports extended common-mode input range (V– to V+ – 1.3 V).
It features rail-to-rail output drive into 2 kΩ loads, 3 MHz gain-bandwidth product, and shutdown capability (not implemented in the 8-lead DD package). The exposed pad (Pin 9) is internally connected to V– (Pin 4), optimizing thermal performance with θJA = 160°C/W under minimal PCB copper.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | ±3 μV maximum - ensures <1 μV error in 100 mV full-scale sensor outputs without trimming. |
| Offset Drift | ±30 nV/°C maximum - limits drift-induced error to <1.5 μV over 50°C ambient shift. |
| Input Noise (0.01–10 Hz) | 1.5 μVP-P typical - enables resolution better than 16-bit at 10 Hz for low-frequency sensors. |
| Open-Loop Gain | 140 dB typical - provides >100 dB closed-loop accuracy with 100× gain configurations. |
| PSRR / CMRR | 130 dB typical - rejects >1 V of supply ripple or common-mode interference at DC. |
| Supply Range | 2.7 V single or ±5 V dual - supports industrial 3.3 V and legacy ±5 V systems without level-shifting. |
| Operating Temp | –40°C to +85°C - qualified for automotive cabin, industrial control, and medical device environments. |
Pinout & Package
Package: 8-lead (3mm × 3mm × 0.8mm) plastic DFN with exposed thermal pad (Pin 9) connected to V– (Pin 4).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT A | Amplifier A output | Rail-to-rail capable; drives 2 kΩ load to within 15 mV of rails at ±5 V supply. |
| 2 - –IN A | Inverting input A | Low-input-bias-current node (±90 pA typ); sensitive to ESD (>700 V damages bias performance). |
| 3 - +IN A | Non-inverting input A | Matches –IN A in offset and drift; requires symmetrical layout to minimize clock feedthrough. |
| 4 - V– | Negative supply / GND | Reference for both amplifiers; exposed pad (Pin 9) internally tied here for thermal conduction. |
| 5 - V+ | Positive supply | Accepts 2.7–5.5 V single or ±5 V dual; PSRR >130 dB suppresses supply noise coupling. |
| 6 - OUT B | Amplifier B output | Independent output; identical AC/DC specs to OUT A; no crosstalk degradation up to 100 kHz. |
| 7 - –IN B | Inverting input B | Electrically isolated from –IN A; usable for differential sensing or independent channel processing. |
| 8 - +IN B | Non-inverting input B | Matches +IN A; supports dual-sensor architectures (e.g., bridge + reference) without shared-path errors. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift autozeroing | Continuous correction at 7.5 kHz eliminates aging and thermal hysteresis effects in DC-critical paths. |
| Rail-to-rail output | Swings within 15 mV of V+ and 2 mV of V– into 2 kΩ - maximizes dynamic range in low-voltage systems. |
| High CMRR/PSRR | 130 dB rejection enables accurate measurement in noisy industrial environments with unshielded wiring. |
| Low 0.01–10 Hz noise | 1.5 μVP-P allows direct digitization of microvolt-level thermocouple outputs without external filtering. |
| Extended input common-mode range | Operates with inputs down to V– and up to V+ – 1.3 V - supports single-supply sensor biasing and ground-referenced bridges. |
Applications
| Thermocouple Amplification | Strain Gauge Signal Conditioning |
|---|---|
Use Scenario: Amplifying µV-level Seebeck voltages from K-type thermocouples across –40°C to +85°C ambient. IC Role / Device Role / Timing Role: Primary DC-coupled instrumentation amplifier with cold-junction compensation interface. Use Value: ±3 μV offset and ±30 nV/°C drift ensure <0.1°C measurement uncertainty without calibration over temperature. | Use Scenario: Reading Wheatstone bridge outputs from 350 Ω metal foil strain gauges in load cells. IC Role / Device Role / Timing Role: Low-noise, high-gain front-end amplifier with matched input pairs for ratiometric excitation rejection. Use Value: 1.5 μVP-P (0.01–10 Hz) noise and 130 dB CMRR enable 20-bit-equivalent resolution at 10 Hz. |
| Medical ECG Front-End | High-Resolution Data Acquisition |
Use Scenario: Amplifying 0.5–5 mV biopotential signals from dry electrodes with high common-mode interference. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier in multi-channel patient monitoring systems. Use Value: 130 dB CMRR and rail-to-rail output preserve signal integrity when interfacing to 16-bit SAR ADCs with 3.3 V supplies. | Use Scenario: Precision DC signal chain in automated test equipment requiring stable gain and offset over 1000-hour deployments. IC Role / Device Role / Timing Role: Core analog signal conditioner for multiplexed sensor inputs in environmental monitoring stations. Use Value: Long-term offset drift <50 nV/√month ensures calibration intervals exceed 12 months in field-deployed units. |
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 |
|---|---|---|---|
| LTC2051HVCS8#PBF | SO-8 package; same electrical specs but larger footprint and higher θJA (250°C/W vs. 160°C/W). | Suitable for prototyping or legacy board designs where DFN reflow is not supported. | Select when manual soldering, thermal margin >100°C/W is acceptable, or SO-8 footprint already exists. |
| AD8628ARZ | Single 5V-only supply (2.7–5.5V); ±1 μV max offset; 1.5 μVP-P noise; no HV option. | Limited to single-channel use; lacks ±5V support and extended temp grade of LTC2051HVIDD#PBF. | Choose only for space-constrained single-amplifier nodes where dual-channel integration is unnecessary. |
Compared with LTC2051HVCS8#PBF, the LTC2051HVIDD#PBF offers 39% smaller area and superior thermal performance; versus AD8628ARZ, it provides dual-channel integration, ±5V compatibility, and guaranteed –40°C to 85°C operation - critical for industrial sensor hubs and medical devices.
Availability
LTC2051HVIDD#PBF is available at Aetrix Electronics and suitable for thermocouple amplification, strain gauge signal conditioning, and medical ECG front-end designs requiring stable component supply across automotive, industrial, and healthcare production programs.
Supply support for LTC2051HVIDD#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 and maintains its precision analog portfolio, emphasizing high-performance signal conditioning ICs for demanding measurement applications.
The LTC2051 series belongs to Linear's zero-drift op amp product line, engineered specifically for DC-accurate, low-noise sensor interfaces where offset, drift, and long-term stability dominate system error budgets.
FAQ
What is the maximum supply voltage rating for LTC2051HVIDD#PBF?
The LTC2051HVIDD#PBF supports total supply voltage (V+ to V–) up to 12 V, enabling operation from ±5 V dual supplies or single 10–12 V rails. Absolute maximum ratings specify 12 V for HV variants like LTC2051HVIDD#PBF - exceeding this risks permanent damage. Operation at ±5 V is fully characterized and recommended for precision applications.
Does LTC2051HVIDD#PBF include a shutdown pin?
No, the LTC2051HVIDD#PBF in the 8-lead DFN (DD) package does not include a shutdown pin. Shutdown functionality is only available on the 10-lead MSOP (MS10) variants (e.g., LTC2051HVIMS10). The DD package omits this pin to maintain compact size and thermal efficiency, making it ideal for always-on precision signal chains.
How does the autozeroing clock affect LTC2051HVIDD#PBF output spectrum?
The LTC2051HVIDD#PBF uses a 7.5 kHz internal autozeroing clock. Residual clock feedthrough is <1 μVRMS input-referred at 7.5 kHz, appearing as narrowband energy in the output spectrum. This is suppressed by placing a capacitor across the feedback resistor to limit closed-loop bandwidth below 7.5 kHz, especially critical in audio or high-resolution data acquisition.
What is the thermal resistance (θJA) of LTC2051HVIDD#PBF under standard PCB conditions?
The LTC2051HVIDD#PBF has a junction-to-ambient thermal resistance (θJA) of 160°C/W when mounted on a PCB with minimal copper spread. This value drops significantly with increased copper area: using expanded thermal pads on all layers can reduce θJA to ~45°C/W. The exposed pad (Pin 9) is internally connected to V– (Pin 4), so proper soldering to a grounded thermal plane is essential for optimal thermal performance.
Can LTC2051HVIDD#PBF drive capacitive loads directly?
The LTC2051HVIDD#PBF is not unity-gain stable with large capacitive loads. Driving >100 pF directly may cause peaking or oscillation. For ADC driver or cable-driving applications, isolate the capacitance with a series resistor (e.g., 10–50 Ω) between the output and load, or use a small feedback capacitor (1–5 pF) across the gain-setting network to ensure phase margin >45°. Stability is verified per Figure 20512 G08 in the datasheet.
LTC2051HVIDD#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- Chopper (Zero-Drift)
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 2V/µs
- Gain Bandwidth Product:
- 3 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 90 pA
- Voltage - Input Offset:
- 1 µV
- Current - Supply:
- 1mA (x2 Channels)
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-DFN (3x3)
LTC2051HVIDD#PBF FAQ
1.How can I place an order for LTC2051HVIDD#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2051HVIDD#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 LTC2051HVIDD#PBF reliable?
The price and inventory of LTC2051HVIDD#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2051HVIDD#PBF is usually 5 days.
3.What payment methods are accepted for LTC2051HVIDD#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2051HVIDD#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2051HVIDD#PBF?
LTC2051HVIDD#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2051HVIDD#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 LTC2051HVIDD#PBF?
For technical support, including LTC2051HVIDD#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2051HVIDD#PBF requirements.
6.How does Aetrix verify that LTC2051HVIDD#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2051HVIDD#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 LTC2051HVIDD#PBF meets industry standards.
7.What is the process for return or replacement of LTC2051HVIDD#PBF?
All LTC2051HVIDD#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2051HVIDD#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 LTC2051HVIDD#PBF part is unused and in its original packaging.
Return procedure for LTC2051HVIDD#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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