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Analog Devices Inc. LTC2051HS8#PBF
- Part No.:
- LTC2051HS8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LTC2051HS8#PBF.pdf
- Description:
- IC OPAMP ZERO-DRIFT 2 CIRC 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:6,415
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Product details
Overview
LTC2051HS8#PBF from Analog Devices (formerly Linear Technology) is a dual zero-drift operational amplifier in an 8-lead SOIC package, designed for precision DC-coupled signal conditioning. It delivers maximum input offset voltage of 3μV, max offset drift of 30nV/°C, rail-to-rail output swing, and 1.5μVP-P (0.01Hz–10Hz) noise-enabling high-resolution thermocouple amplification and strain gauge measurement in industrial sensor interfaces.
For engineers reviewing the LTC2051HS8#PBF datasheet, LTC2051HS8#PBF pinout, LTC2051HS8#PBF application, or LTC2051HS8#PBF equivalent, key selection criteria include guaranteed –40°C to 125°C operation, ±5V supply compatibility, shutdown capability (in MS10 variants), and verified performance in low-side current sense and medical instrumentation where sub-microvolt DC accuracy is mandatory.
Technical Context
The LTC2051HS8#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 errors while maintaining 3MHz gain-bandwidth product and 2V/μs slew rate-supporting both precision DC amplification and moderate-speed closed-loop filtering.
It features extended common-mode input range (V– to V+ – 1.3V), rail-to-rail output drive into 2kΩ loads, and robust PSRR/CMRR (>120dB over full temperature range). The SO-8 package lacks a dedicated shutdown pin, distinguishing it from the 10-lead MSOP variant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | Max ±3μV - enables direct amplification of microvolt-level sensor outputs without calibration drift. |
| Offset Drift | Max ±30nV/°C - ensures stable baseline over wide industrial temperature ranges (–40°C to 125°C). |
| Noise (0.01Hz–10Hz) | 1.5μVP-P - supports 18+ bit resolution in high-resolution data acquisition systems. |
| Gain-Bandwidth Product | 3MHz - allows stable unity-gain buffering and active filter design up to ~300kHz. |
| Supply Range | 2.7V single supply or ±5V dual supply - compatible with legacy 5V systems and modern low-voltage sensor front-ends. |
| Output Swing | Rail-to-rail into 10kΩ - maximizes dynamic range when interfacing with 12–16-bit ADCs. |
| PSRR / CMRR | ≥120dB (full temp range) - rejects power supply ripple and common-mode interference in noisy industrial environments. |
Pinout & Package
Package: 8-lead narrow-body SOIC (S8), 0.150-inch width, JEDEC standard outline. Body dimensions: 4.90mm × 3.91mm × 1.75mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT A) | Amplifier A output | Drives external load or feedback network; rail-to-rail capable with 2kΩ min load. |
| 2 (–IN A) | Inverting input A | High-impedance node; sensitive to PCB layout and source resistance due to clock feedthrough effects. |
| 3 (+IN A) | Non-inverting input A | Accepts differential or single-ended signals; common-mode range extends to V– and within 1.3V of V+. |
| 4 (V–) | Negative supply rail | Reference for internal circuitry; exposed pad (in DFN variants) connects here-SOIC has no exposed pad. |
| 5 (+IN B) | Non-inverting input B | Independent second channel input; identical specs and layout sensitivity as Pin 3. |
| 6 (–IN B) | Inverting input B | Independent second channel inverting input; shares same autozero clock and noise characteristics as Pin 2. |
| 7 (OUT B) | Amplifier B output | Second independent output; fully decoupled from Channel A except shared supply rails. |
| 8 (V+) | Positive supply rail | Accepts 2.7V to 5.5V single supply or +5V in ±5V dual-supply configuration. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift autozeroing | Continuous correction of input offset and drift at 7.5kHz, eliminating thermal and time-dependent errors in DC-critical paths. |
| Rail-to-rail output | Swings within 15mV of rails into 2kΩ, preserving full ADC input range without level-shifting circuitry. |
| Low 0.01Hz–10Hz noise | 1.5μVP-P enables accurate digitization of slow-varying sensor signals (e.g., thermocouples, load cells) without post-processing filtering. |
| High PSRR/CMRR | ≥120dB over –40°C to 125°C ensures immunity to supply ripple and EMI in motor drives and PLC I/O modules. |
| Extended temperature grade | Specified for –40°C to 125°C operation-qualified for under-hood automotive, industrial control, and downhole sensing applications. |
Applications
| Thermocouple Amplification | Strain Gauge Signal Conditioning |
|---|---|
Use Scenario: Amplifying μV-level Seebeck voltages from Type-K/J thermocouples in furnace controllers and environmental monitoring systems. IC Role / Device Role / Timing Role: Precision DC-coupled first-stage amplifier with cold-junction compensation interface; no AC coupling or high-pass filtering required. Use Value: Sub-0.1°C measurement stability over temperature cycles due to <3μV offset and <30nV/°C drift-eliminates frequent recalibration. | Use Scenario: Reading bridge outputs from 350Ω metal foil strain gauges in weigh scales and structural health monitoring. IC Role / Device Role / Timing Role: Low-noise, high-CMRR instrumentation front-end; configured as difference amplifier with matched external resistors. Use Value: 1.5μVP-P noise and >120dB CMRR enable resolution better than 1 part in 100,000 of full-scale bridge output. |
| Medical ECG Front-End | High-Resolution Data Acquisition |
Use Scenario: Biopotential amplification in portable ECG monitors requiring DC-coupled baseline stability and low 1/f noise. IC Role / Device Role / Timing Role: First-stage patient-isolated amplifier; drives anti-alias filter and ADC driver stage. Use Value: Near-zero drift prevents baseline wander during multi-minute recordings; rail-to-rail output matches ADC reference span. | Use Scenario: Sensor hub in industrial IoT gateways digitizing multiple analog inputs (temperature, pressure, flow) with 24-bit sigma-delta ADCs. IC Role / Device Role / Timing Role: Precision buffer and programmable-gain stage before multiplexed ADC input; operates in continuous or burst-sampling mode. Use Value: Guaranteed 125°C operation allows placement near heat-generating processors; low supply current (0.75mA per amp) extends battery life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC2051IMS8#PBF | Same architecture and SO-8 package, but rated for –40°C to 85°C only; lower max offset drift (±10nV/°C typ). | Suitable for commercial-grade instrumentation where extended temperature is not required. | Select when cost sensitivity outweighs need for 125°C operation and tighter drift spec is unnecessary. |
| AD8628ARZ | Single zero-drift op-amp (not dual); 1.5μV max offset, 0.01Hz–10Hz noise = 1.5μVP-P; SO-8 package; –40°C to 125°C. | Requires two devices for dual-channel use; no native dual-channel matching or crosstalk isolation. | Choose when board space permits discrete dual placement and channel-to-channel matching is less critical than per-amplifier optimization. |
Compared with LTC2051IMS8#PBF, the LTC2051HS8#PBF provides guaranteed 125°C operation and higher max offset drift tolerance-critical for under-hood or enclosed industrial deployments. Versus AD8628ARZ, it offers integrated dual-channel functionality with matched performance and reduced layout complexity.
Availability
LTC2051HS8#PBF is available at Aetrix Electronics and suitable for thermocouple amplifiers, strain gauge interfaces, and medical instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC2051HS8#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, inheriting its precision analog portfolio including zero-drift op-amps. Linear pioneered autozeroing and chopper-stabilized architectures for ultra-low-drift applications.
The LTC2051 series was designed specifically for high-accuracy, low-drift DC signal conditioning in harsh environments-targeting industrial process control, test equipment, and medical diagnostics where µV-level stability is non-negotiable.
FAQ
What is the maximum operating temperature for LTC2051HS8#PBF?
The LTC2051HS8#PBF is specified for continuous operation from –40°C to +125°C ambient temperature. This extended temperature grade is validated per manufacturer characterization and applies across all electrical parameters in the datasheet's "LTC2051H/LTC2052H" column-including offset voltage, drift, PSRR, and CMRR-making it suitable for under-hood automotive and industrial control applications where thermal stress is severe.
Does LTC2051HS8#PBF include a shutdown pin?
No, the LTC2051HS8#PBF in the 8-lead SOIC (S8) package does not include a shutdown pin. Shutdown functionality is only available on the 10-lead MSOP (MS10) variants such as LTC2051CMS10#PBF. The SO-8 version operates continuously when powered and draws 0.75mA per amplifier at 3V supply-no quiescent current reduction mechanism is present.
What is the input voltage range for LTC2051HS8#PBF?
The LTC2051HS8#PBF supports an extended common-mode input voltage range from the negative supply rail (V–) up to V+ – 1.3V. For example, with ±5V supplies, inputs may swing from –5V to +3.7V; with a 5V single supply (V– = GND), inputs operate from 0V to +3.7V. This exceeds rail-to-rail input capability and enables direct interfacing with sensors whose output exceeds typical op-amp input limits.
How does clock feedthrough affect LTC2051HS8#PBF performance?
LTC2051HS8#PBF uses a 7.5kHz autozeroing clock, resulting in two forms of clock feedthrough: (1) input-referred residue (<1μVRMS) independent of source impedance, and (2) charge-injection–induced spikes proportional to input impedance. Keeping source resistance below 10kΩ reduces the latter to <1μVRMS. Adding a capacitor across the feedback resistor suppresses both forms by limiting closed-loop bandwidth-critical in precision DC applications where spectral purity matters.
Can LTC2051HS8#PBF operate from a 3.3V supply?
Yes, the LTC2051HS8#PBF is fully specified for single-supply operation from 2.7V to 5.5V. At 3.3V, it maintains rail-to-rail output swing (within 15mV of rails into 2kΩ), 1.5μVP-P 0.01Hz–10Hz noise, and >120dB PSRR/CMRR. Supply current is 0.75mA per amplifier, enabling use in low-power 3.3V systems such as battery-powered data loggers and portable instrumentation where precision must not be compromised by voltage scaling.
LTC2051HS8#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- 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 ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
LTC2051HS8#PBF FAQ
1.How can I place an order for LTC2051HS8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2051HS8#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 LTC2051HS8#PBF reliable?
The price and inventory of LTC2051HS8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2051HS8#PBF is usually 5 days.
3.What payment methods are accepted for LTC2051HS8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2051HS8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2051HS8#PBF?
LTC2051HS8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2051HS8#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 LTC2051HS8#PBF?
For technical support, including LTC2051HS8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2051HS8#PBF requirements.
6.How does Aetrix verify that LTC2051HS8#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2051HS8#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 LTC2051HS8#PBF meets industry standards.
7.What is the process for return or replacement of LTC2051HS8#PBF?
All LTC2051HS8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2051HS8#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 LTC2051HS8#PBF part is unused and in its original packaging.
Return procedure for LTC2051HS8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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