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Analog Devices Inc. LTC2051HVCDD#PBF
- Part No.:
- LTC2051HVCDD#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
LTC2051HVCDD#PBF.pdf
- Description:
- IC OPAMP ZERO-DRIFT 2 CIRC 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:594
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Product details
Overview
LTC2051HVCDD#PBF from Analog Devices (formerly Linear Technology) is a dual zero-drift operational amplifier in an 8-lead 3mm × 3mm DFN package, delivering 3μV max input offset voltage, 30nV/°C max offset drift, and 1.5μVP-P (0.01Hz–10Hz) input-referred noise. It operates from single 2.7V or split ±5V supplies and supports rail-to-rail output swing into 2kΩ loads-ideal for precision thermocouple amplification and high-resolution data acquisition systems.
For engineers reviewing the LTC2051HVCDD#PBF datasheet, LTC2051HVCDD#PBF pinout, LTC2051HVCDD#PBF application, or LTC2051HVCDD#PBF equivalent, key selection criteria include guaranteed ±5V supply operation, extended common-mode input range (V– to V+ – 1.3V), shutdown capability (in MS10 variant only), and DC accuracy over temperature without external trimming.
Technical Context
The LTC2051HVCDD#PBF employs autozeroing architecture with a 7.5kHz internal sampling clock to continuously correct input offset and drift. Its chopper-stabilized core achieves near-zero DC error while maintaining 3MHz gain-bandwidth product and 2V/μs slew rate-enabling stable closed-loop performance in low-frequency, high-gain configurations.
Unlike conventional op amps, it features enhanced ESD-tolerant input stages and a dedicated exposed thermal pad (Pin 9, connected to V–) for improved thermal dissipation in compact layouts. Input bias current remains below ±150pA at 25°C and is dominated by charge injection effects below 70°C, not leakage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | Max ±3μV - enables sub-16-bit DC accuracy in 24-bit ADC front-ends without calibration. |
| Offset Drift | Max ±30nV/°C - ensures <1μV total drift over 0°C to 70°C operating range. |
| Noise (0.01Hz–10Hz) | 1.5μVP-P - supports high-resolution strain gauge and medical sensor signal conditioning. |
| Supply Range | 2.7V single or ±5V dual - compatible with industrial 5V rails and battery-powered 3V systems. |
| CMRR / PSRR | 130dB typical - rejects power supply ripple and common-mode interference in noisy environments. |
| Output Swing | Rail-to-rail into 10kΩ; ±4.92V on ±5V - maximizes dynamic range in unipolar/bipolar signal chains. |
| Gain-Bandwidth | 3MHz - sufficient for anti-alias filtering and active RC filter design up to ~100kHz. |
Pinout & Package
Package: 8-lead (3mm × 3mm × 0.8mm) plastic DFN with exposed thermal pad (Pin 9) electrically tied to V– (Pin 4).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT A) | Amplifier A output | Capable of sourcing/sinking ±20mA; rail-to-rail swing into ≥2kΩ load. |
| 2 (–IN A) | Inverting input A | High-impedance node; sensitive to PCB layout parasitics due to autozero clock feedthrough. |
| 3 (+IN A) | Non-inverting input A | DC-coupled input; common-mode range extends to V– and within 1.3V of V+. |
| 4 (V–) | Negative supply | Reference for exposed thermal pad (Pin 9); must be low-impedance for stability and thermal performance. |
| 5 (V+) | Positive supply | Accepts 2.7V to 5.5V (single) or ±5V (dual); PSRR >120dB minimizes supply noise coupling. |
| 6 (OUT B) | Amplifier B output | Independent output stage; identical specs to OUT A; no crosstalk above –100dB. |
| 7 (–IN B) | Inverting input B | Matched to –IN A; enables dual-channel synchronous sensing (e.g., differential bridge readout). |
| 8 (+IN B) | Non-inverting input B | Electrically isolated from +IN A; supports independent signal paths with matched DC performance. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift architecture | Autozeroing core eliminates manual nulling and reduces system-level calibration frequency. |
| Rail-to-rail output | Delivers full supply utilization-critical for maximizing SNR in low-voltage, high-resolution ADC interfaces. |
| Extended common-mode range | Inputs operate down to V– and up to V+ – 1.3V-supports direct low-side current sensing without level-shifting. |
| Low 0.01Hz–10Hz noise | 1.5μVP-P enables <16-bit effective resolution in DC-coupled instrumentation without external filtering. |
| High CMRR/PSRR | 130dB rejection preserves signal integrity in mixed-signal industrial PLCs and medical isolation barriers. |
Applications
| Thermocouple Amplification | Strain Gauge Readout |
|---|---|
Use Scenario: Amplifying microvolt-level Seebeck voltages from Type-K thermocouples across –40°C to +125°C ambient. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with cold-junction compensation interface. Use Value: ±3μV offset and ±30nV/°C drift ensure <0.5°C measurement uncertainty without software correction. | Use Scenario: Reading Wheatstone bridge outputs from metal foil strain gauges in load cells and pressure transducers. IC Role / Device Role / Timing Role: Low-noise, high-CMRR instrumentation front-end with programmable gain. Use Value: 1.5μVP-P noise and 130dB CMRR resolve sub-10ppm bridge imbalances in 24-bit DAQ systems. |
| Medical ECG Front-End | High-Resolution Data Acquisition |
Use Scenario: Biopotential amplification in portable ECG monitors requiring DC-coupled baseline stability. IC Role / Device Role / Timing Role: First-stage AC/DC-coupled amplifier with ultra-low drift and EMI-hardened inputs. Use Value: Near-zero drift prevents baseline wander over multi-minute recordings; 130dB PSRR suppresses 50/60Hz mains interference. | Use Scenario: Signal conditioning for 24-bit sigma-delta ADCs in test equipment and precision metrology. IC Role / Device Role / Timing Role: Anti-alias filter driver and sensor interface with guaranteed DC accuracy. Use Value: Max ±3μV offset allows full-scale utilization of 24-bit ADC without offset trimming or digital correction. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC2051CDD#PBF | Same package and pinout; rated for 0°C to 70°C only; max offset 3μV but no ±5V supply guarantee. | Not suitable for ±5V bipolar signal chains or extended-temperature industrial deployments. | Select LTC2051HVCDD#PBF when ±5V operation or wider voltage margin is required. |
| AD8628ARZ | Single zero-drift op amp (SO-8); 1μV max offset, 0.005μV/°C drift; 2.7V–5.5V supply only. | Lacks dual-channel integration; requires two devices for same functionality; no ±5V support. | Choose AD8628ARZ only for space-constrained single-channel designs where ±5V is unnecessary. |
Compared with LTC2051CDD#PBF and AD8628ARZ, the LTC2051HVCDD#PBF uniquely combines dual-channel operation, guaranteed ±5V supply compatibility, and 0°C to 70°C specified performance-making it optimal for industrial sensor signal chains requiring bipolar headroom and channel matching.
Availability
LTC2051HVCDD#PBF is available at Aetrix Electronics and suitable for thermocouple amplifiers, strain gauge readout systems, and medical instrumentation requiring stable component supply with guaranteed ±5V operation and low-drift DC performance.
Supply support for LTC2051HVCDD#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 with rigorous characterization and long-term product support.
The LTC2051 family was designed specifically for high-accuracy, low-drift DC signal conditioning in instrumentation, medical, and industrial sensing-prioritizing offset, drift, and noise over speed or power efficiency.
FAQ
What is the maximum supply voltage rating for LTC2051HVCDD#PBF?
The LTC2051HVCDD#PBF has an absolute maximum total supply voltage (V+ to V–) of 12V, supporting operation from ±5V (10V span) or single 2.7V to 5.5V supplies. This distinguishes it from standard LTC2051 variants rated for 7V max, enabling robust bipolar signal chain design without external regulators.
Does LTC2051HVCDD#PBF include a shutdown pin?
No, the LTC2051HVCDD#PBF does not include a shutdown pin. Shutdown functionality is only available in the 10-lead MSOP (MS10) package variants like LTC2051HVCMS10#PBF. The DFN-packaged LTC2051HVCDD#PBF operates continuously when powered within its specified voltage and temperature ranges.
How does the autozeroing architecture of LTC2051HVCDD#PBF affect system-level noise performance?
The LTC2051HVCDD#PBF uses a 7.5kHz autozeroing clock to correct offset and drift, resulting in 1.5μVP-P (0.01Hz–10Hz) input-referred noise. Clock feedthrough is minimized to <1μVRMS input-referred at 7.5kHz via internal residue suppression-ensuring clean DC and low-frequency response without compromising bandwidth or stability.
Can LTC2051HVCDD#PBF drive capacitive loads directly?
The LTC2051HVCDD#PBF is not unity-gain stable with large capacitive loads. Driving >100pF directly may cause peaking or oscillation. For ADC input buffering or cable driving, use a series resistor (≥100Ω) between the output and capacitance, or add a small feedback capacitor (1–5pF) across the gain-setting resistor to maintain phase margin.
What is the thermal pad connection requirement for LTC2051HVCDD#PBF?
The exposed thermal pad (Pin 9) of the LTC2051HVCDD#PBF is internally connected to V– (Pin 4) and must be soldered to a PCB copper pour tied to the negative supply plane. This connection is mandatory for thermal performance (θJA = 160°C/W) and electrical stability-floating or misconnected pads degrade noise, drift, and reliability.
LTC2051HVCDD#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:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-DFN (3x3)
LTC2051HVCDD#PBF FAQ
1.How can I place an order for LTC2051HVCDD#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2051HVCDD#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 LTC2051HVCDD#PBF reliable?
The price and inventory of LTC2051HVCDD#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2051HVCDD#PBF is usually 5 days.
3.What payment methods are accepted for LTC2051HVCDD#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2051HVCDD#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2051HVCDD#PBF?
LTC2051HVCDD#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2051HVCDD#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 LTC2051HVCDD#PBF?
For technical support, including LTC2051HVCDD#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2051HVCDD#PBF requirements.
6.How does Aetrix verify that LTC2051HVCDD#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2051HVCDD#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 LTC2051HVCDD#PBF meets industry standards.
7.What is the process for return or replacement of LTC2051HVCDD#PBF?
All LTC2051HVCDD#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2051HVCDD#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 LTC2051HVCDD#PBF part is unused and in its original packaging.
Return procedure for LTC2051HVCDD#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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