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Analog Devices Inc. LTC1051CSW#PBF
- Part No.:
- LTC1051CSW#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
LTC1051CSW#PBF.pdf
- Description:
- IC OPAMP ZERO-DRIFT 2 CIRC 16SO
- Quantity:
- Payment:
- Shipping:
Inventory:896
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Product details
Overview
LTC1051CSW#PBF from Analog Devices (formerly Linear Technology) is a dual precision zero-drift operational amplifier with integrated sample-and-hold capacitors, designed for ultra-low-offset DC signal conditioning. It delivers 0.5µV max input offset voltage, 0.01µV/°C drift, 1.5µVP-P (DC–10Hz) noise, 140dB voltage gain, and 2.5MHz gain-bandwidth product while consuming only 1mA per amplifier - enabling high-accuracy thermocouple amplification and strain gauge readout in industrial sensor interfaces.
For engineers reviewing the LTC1051CSW#PBF datasheet, LTC1051CSW#PBF pinout, LTC1051CSW#PBF application, or LTC1051CSW#PBF equivalent, key selection criteria include its chopper-stabilized architecture with on-chip capacitors, rail-to-rail output swing capability, single-supply operation down to 4.75V, and compatibility with standard dual op-amp footprints in SW package.
Technical Context
The LTC1051CSW#PBF employs a fully integrated chopper-stabilized topology with internal sampling at 3.3kHz, eliminating external hold capacitors required by legacy chopper amplifiers. Its dual-amplifier structure shares no internal resources between channels, ensuring independent DC accuracy and low crosstalk.
It features auto-zeroing circuitry that corrects input offset and drift in real time, achieving combined DC and AC performance superior to competing zero-drift op amps. Input common-mode range includes ground, and output swings to ground under load - critical for single-supply instrumentation front ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | ±0.5µV max - enables sub-µV-level DC measurement without manual trimming |
| Offset Drift | ±0.01µV/°C - ensures stable calibration over industrial temperature range (–40°C to +85°C) |
| Input Noise (DC–10Hz) | 1.5µVP-P typical - supports high-resolution data acquisition in slow-signal applications |
| Gain Bandwidth Product | 2.5MHz - provides adequate bandwidth for anti-aliasing filters and sensor signal conditioning up to ~200kHz |
| Slew Rate | 4V/µs - allows fast settling for step inputs in precision control loops |
| Supply Current per Amp | 1mA typical - enables dual-channel precision amplification within tight power budgets |
| Common-Mode Rejection | 114dB min - rejects interference from shared sensor excitation or noisy PCB grounds |
Pinout & Package
The LTC1051CSW#PBF is housed in a 16-lead plastic SO (SW) package with wide-body 0.300-inch footprint (LTC DWG #05-08-1620), RoHS-compliant and lead-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 14, 15, 16 | No Connect (NC) | Unused pins; must be left floating or tied to ground per layout best practices |
| 4 | Inverting Input A (–IN A) | Differential input node for first amplifier channel; high-impedance, low-bias-current path |
| 5 | Non-inverting Input A (+IN A) | Differential input node for first amplifier channel; accepts signals down to ground |
| 6 | Negative Supply (V–) | Reference for dual-supply operation; supports single-supply use when tied to ground |
| 7 | Output A (OUT A) | Amplified output of Channel A; swings to within 150mV of V– rail |
| 9 | Positive Supply (V+) | Power rail; operates from 4.75V to 16V total supply (V+ to V–) |
| 10 | Output B (OUT B) | Amplified output of Channel B; independently buffered and rail-swing capable |
| 11 | Inverting Input B (–IN B) | Differential input node for second amplifier channel; matched performance to Channel A |
| 12 | Non-inverting Input B (+IN B) | Differential input node for second amplifier channel; identical CMRR and noise specs as +IN A |
Key Features
| Feature | Design Value |
|---|---|
| On-chip sample-and-hold capacitors | Eliminates need for external 10nF–100nF hold capacitors, reducing board area and component count |
| Input common-mode range includes ground | Enables direct interfacing with grounded sensors (e.g., RTDs, thermocouples) without level-shifting circuitry |
| Output swing to ground | Supports true single-supply operation with 0V output reference - essential for ADC driver stages |
| Pin-compatible with industry-standard dual op amps | Direct replacement for LM358, OP27, or AD8628 in existing SW-package layouts without PCB revision |
| Low 1.5µVP-P (DC–10Hz) noise | Meets requirements for 24-bit sigma-delta ADC front ends in weigh scales and medical diagnostics |
Applications
| Thermocouple Amplifiers | Electronic Scales |
|---|---|
Use Scenario: Amplifying µV-level Seebeck voltages from Type K/J thermocouples across –50°C to +1000°C ranges. IC Role / Device Role / Timing Role: Precision DC-coupled instrumentation amplifier front end with cold-junction compensation interface. Use Value: 0.5µV offset and 0.01µV/°C drift ensure <±0.1°C system accuracy without software calibration. | Use Scenario: Conditioning mV-output signals from 350Ω full-bridge load cells in industrial weighing systems. IC Role / Device Role / Timing Role: Dual-channel differential input stage driving 24-bit ΣΔ ADC with programmable gain. Use Value: 1.5µVP-P (DC–10Hz) noise and 114dB CMRR suppress bridge imbalance and EMI-induced errors. |
| Medical Instrumentation | Strain Gauge Amplifiers |
Use Scenario: Biopotential signal acquisition (ECG, EEG) requiring ultra-low drift and sub-µV baseline stability. IC Role / Device Role / Timing Role: First-stage amplifier in isolated patient-connected analog front end with high input impedance. Use Value: Picoampere-level input bias current (±10pA) prevents electrode polarization and DC drift in dry-electrode designs. | Use Scenario: High-gain amplification of microstrain-induced resistance changes in structural health monitoring sensors. IC Role / Device Role / Timing Role: Dual-op-amp configured as difference amplifier with matched resistor networks. Use Value: Dual-channel matching ensures <1µV inter-channel offset mismatch, preserving common-mode rejection in ratiometric measurements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8628ARZ | Single-channel, same 0.5µV offset spec but higher 2.2µVP-P (DC–10Hz) noise; requires external capacitors for auto-zero | Not pin-compatible; needs PCB redesign for dual-channel use | Select when single-channel operation suffices and lower cost is prioritized over noise floor |
| LTC2050CS8#PBF | Lower 0.25µV offset and 0.003µV/°C drift, but 2.8µVP-P noise and 1.5MHz GBW; same SW-8 package (not SW-16) | Single-channel only; incompatible pinout prevents drop-in replacement | Choose for highest DC accuracy where dual-channel integration is not required |
Compared with AD8628ARZ and LTC2050CS8#PBF, the LTC1051CSW#PBF uniquely delivers dual-channel zero-drift performance in a single 16-pin SW package with integrated hold capacitors - reducing bill-of-materials count and layout complexity for multi-sensor systems without sacrificing DC precision or low-frequency noise.
Availability
LTC1051CSW#PBF is available at Aetrix Electronics and suitable for thermocouple amplifiers, electronic scales, and medical instrumentation requiring stable component supply, long-term calibration integrity, and RoHS-compliant manufacturing.
Supply support for LTC1051CSW#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 full product support, datasheet documentation, and long-term supply commitment for legacy Linear parts.
The LTC1051 series belongs to Linear's precision instrumentation amplifier family, engineered specifically for DC-accurate sensor signal conditioning in harsh industrial and medical environments where offset, drift, and low-frequency noise dominate error budgets.
FAQ
What is the operating temperature range for the LTC1051CSW#PBF?
The LTC1051CSW#PBF is specified for the commercial temperature range of –40°C to +85°C. This rating applies to all electrical characteristics unless otherwise noted in the datasheet, and aligns with industrial-grade sensor interface requirements. The device's 0.01µV/°C drift ensures minimal thermal-induced error across this full span.
Does the LTC1051CSW#PBF require external capacitors for chopper stabilization?
No, the LTC1051CSW#PBF integrates sample-and-hold capacitors on-die, eliminating the need for external 10nF–100nF hold capacitors typically required by other zero-drift op amps. This reduces PCB area, component count, and sensitivity to capacitor aging or parasitic leakage - a key differentiator confirmed in the LTC1051/LTC1053 datasheet Figure TA01a and package description section.
Can the LTC1051CSW#PBF operate from a single 5V supply?
Yes, the LTC1051CSW#PBF supports single-supply operation from 4.75V to 16V total supply voltage. With input common-mode range extending to V– (ground) and output swing to within 150mV of V–, it functions effectively in 5V systems - for example, driving SAR or sigma-delta ADCs referenced to ground without level-shifting circuitry.
What is the internal sampling frequency of the LTC1051CSW#PBF?
The LTC1051CSW#PBF operates with an internal sampling frequency of 3.3kHz, as specified in the Electrical Characteristics table and verified in Typical Performance Characteristics Figure G02 and G03. This clock rate governs aliasing behavior and sets the upper limit for clean signal amplification before alias products appear - critical for anti-alias filter design in data acquisition systems.
Is the LTC1051CSW#PBF pin-compatible with standard dual op amp packages?
Yes, the LTC1051CSW#PBF uses a 16-pin wide-body SO (SW) package compatible with industry-standard dual op amp footprints. While pin count differs from 8-pin DIP/SO duals, its pin assignments for active terminals (V+, V–, ±IN A/B, OUT A/B) follow conventional dual-op-amp ordering - enabling layout reuse when migrating from older duals like LM358 in space-constrained SW designs.
LTC1051CSW#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- Chopper (Zero-Drift)
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 4V/µs
- Gain Bandwidth Product:
- 2.5 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 15 pA
- Voltage - Input Offset:
- 0.5 µV
- Current - Supply:
- 1mA (x2 Channels)
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 4.75 V
- Voltage - Supply Span (Max):
- 16 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SO
LTC1051CSW#PBF FAQ
1.How can I place an order for LTC1051CSW#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1051CSW#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 LTC1051CSW#PBF reliable?
The price and inventory of LTC1051CSW#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1051CSW#PBF is usually 5 days.
3.What payment methods are accepted for LTC1051CSW#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1051CSW#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1051CSW#PBF?
LTC1051CSW#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1051CSW#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 LTC1051CSW#PBF?
For technical support, including LTC1051CSW#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1051CSW#PBF requirements.
6.How does Aetrix verify that LTC1051CSW#PBF is sourced from the original manufacturer or authorized distributors?
All LTC1051CSW#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 LTC1051CSW#PBF meets industry standards.
7.What is the process for return or replacement of LTC1051CSW#PBF?
All LTC1051CSW#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1051CSW#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 LTC1051CSW#PBF part is unused and in its original packaging.
Return procedure for LTC1051CSW#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC1051CSW#PBF Tags
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LM358DT
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LM358ADR
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LM2904DGKR
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LM358P
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