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Analog Devices Inc. LTC2050CS8#PBF
- Part No.:
- LTC2050CS8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LTC2050CS8#PBF.pdf
- Description:
- IC OPAMP ZERO-DRIFT 1 CIRC 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:149
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Product details
Overview
LTC2050CS8#PBF from Analog Devices is a zero-drift operational amplifier in an 8-lead SOIC package, designed for precision DC-coupled signal conditioning. It delivers 0.5µV typical input offset voltage, 10nV/°C drift, 1.5µVP-P (0.01Hz–10Hz) noise, and rail-to-rail output swing into 2kΩ loads-enabling high-accuracy thermocouple amplification and strain gauge measurement at room temperature.
For engineers reviewing the LTC2050CS8#PBF datasheet, LTC2050CS8#PBF pinout, LTC2050CS8#PBF application, or LTC2050CS8#PBF equivalent, key selection criteria include guaranteed 3µV max offset, 30nV/°C max drift over 0°C to 70°C, shutdown capability (active-low), and compatibility with single 2.7V–6V supplies in space-constrained industrial sensor front-ends.
Technical Context
The LTC2050CS8#PBF uses auto-zeroing architecture with a 7.5kHz internal sampling clock to continuously correct input offset and drift. Its input stage supports common-mode voltage from V– to (V+ – 1.3V), and its enhanced output stage drives rail-to-rail into 2kΩ while maintaining >130dB PSRR and CMRR across DC–10Hz.
Unlike chopper-stabilized amplifiers, it avoids switching-induced glitches via correlated double sampling; input bias current remains ±75pA (typ) at 25°C, and overload recovery settles within 2ms-critical for DC-accurate active filters and low-side current sensing where step response fidelity matters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | ±0.5µV typical - enables sub-10µV system-level DC error in 24-bit DAQ front-ends without calibration |
| Offset Drift | 10nV/°C typical - ensures <1µV total drift over 0°C–70°C operating range |
| 0.01Hz–10Hz Noise | 1.5µVP-P - supports 20+ bit effective resolution in precision weigh scales |
| Gain Bandwidth Product | 3MHz - sufficient for closed-loop gains up to 1000 with stable phase margin in instrumentation amps |
| Supply Range | 2.7V to 6V single supply - compatible with Li-ion and 3.3V/5V logic rails without level shifting |
| Shutdown Current | 10µA max - reduces power to <15µW during idle cycles in battery-powered sensors |
| Output Swing | Rail-to-rail into 2kΩ - delivers full-scale 0–5V output with <10mV headroom at both rails |
Pinout & Package
Package: 8-lead plastic SOIC (narrow, 0.150-inch width), JEDEC MS-012, body dimensions 4.9mm × 3.9mm × 1.75mm, thermal resistance θJA = 150°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - NC | No connect | Internally unused; must be left floating or tied to GND per layout best practice |
| 2 - V– | Negative supply | Ground reference for single-supply operation; connects to system GND |
| 3 - +IN | Non-inverting input | High-impedance node (1.7pF capacitance); sensitive to ESD-requires guard ring |
| 4 - –IN | Inverting input | Differential input node; matched to +IN for CMRR >130dB |
| 5 - SHDN | Shutdown control | Active-low logic input; pulls device into 10µA sleep mode when ≤0.5V below V– |
| 6 - V+ | Positive supply | Accepts 2.7V–6V; bypass capacitor required within 1cm for PSRR stability |
| 7 - OUT | Amplifier output | Capable of sourcing/sinking ±20mA; rail-to-rail swing into 2kΩ load |
| 8 - NC | No connect | Internally unused; no electrical function-leave unconnected |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift architecture | Auto-zeroing at 7.5kHz eliminates long-term drift and 1/f noise without chopper ripple |
| Rail-to-rail output | Swings within 10mV of both rails into 2kΩ-maximizes dynamic range in 3.3V systems |
| Enhanced CMRR/PSRR | 130dB typical over DC–10Hz-rejects supply and common-mode noise in noisy industrial environments |
| Fast overload recovery | 2ms settling after input overdrive-prevents data loss in transient-rich sensor interfaces |
| Low-profile SOIC | 1.75mm max height-fits under 2mm board-to-board connectors in compact medical modules |
Applications
| Thermocouple Amplification | Strain Gauge Measurement |
|---|---|
Use Scenario: Amplifying µV-level K-type thermocouple outputs (10mV/°C) with cold-junction compensation over 0°C–100°C. IC Role / Device Role / Timing Role: Precision DC-coupled gain block (AV = 1001) with <6mV total output offset and <1µV/°C drift contribution. Use Value: Enables direct 0.1°C resolution without software calibration, leveraging 0.5µV offset and 10nV/°C drift specs. | Use Scenario: Reading bridge outputs from 350Ω foil strain gauges in load cells with 0.05% linearity requirement. IC Role / Device Role / Timing Role: Low-noise, high-CMRR differential amplifier (AV = 100) rejecting common-mode shifts from mechanical stress. Use Value: 1.5µVP-P noise and >130dB CMRR ensure <0.01% FS error at 24-bit ADC input, even with 10mV common-mode shift. |
| Medical Instrumentation | High-Resolution Data Acquisition |
Use Scenario: Front-end amplification for ECG electrode signals with DC-coupled baseline stability and minimal electrode polarization error. IC Role / Device Role / Timing Role: Ultra-low-offset, low-drift buffer driving anti-alias filter and 24-bit sigma-delta ADC. Use Value: 0.5µV offset and 10nV/°C drift prevent baseline wander over patient monitoring sessions, eliminating manual zeroing. | Use Scenario: Digitizing slow-varying process variables (pressure, temperature) in industrial PLC analog input modules. IC Role / Device Role / Timing Role: Precision gain stage preceding 24-bit ADC, requiring <1ppm gain error and <1µV offset drift over 10-year field life. Use Value: 50nV/√month long-term drift spec ensures <1µV total offset drift over 10 years-meeting IEC 61000-4-30 Class A accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC2051IS8#PBF | Dual-channel version in same SO-8 package; 0.5µV offset, 10nV/°C drift, but higher 1.5mA supply current per channel | Requires dual-amplifier topology (e.g., instrumentation amp + reference buffer); not drop-in for single-channel designs | Select when needing matched dual amplifiers on one die for better tracking-LTC2050CS8#PBF remains optimal for single-channel cost-sensitive layouts. |
| LTC1150CN8#PBF | Higher voltage (±18V), larger 8-lead PDIP package; 5µV max offset, 0.1µV/°C drift-less precise and less compact | Suitable only for ±15V legacy industrial systems; incompatible with 3.3V/5V-only PCBs due to pinout and supply constraints | Choose only if existing design mandates ±15V rails and DIP footprint-LTC2050CS8#PBF offers superior DC specs in modern SOIC space. |
Compared with LTC2051IS8#PBF and LTC1150CN8#PBF, the LTC2050CS8#PBF provides the lowest offset and drift in the smallest SOIC package with single-supply flexibility-making it the preferred choice for new 3.3V/5V sensor signal chains demanding <1µV total error budget.
Availability
LTC2050CS8#PBF is available at Aetrix Electronics and suitable for thermocouple amplification, strain gauge measurement, medical instrumentation, and high-resolution data acquisition requiring stable component supply across industrial and test equipment lifecycles.
Supply support for LTC2050CS8#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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets since 1965.
The LTC2050 product line targets ultra-precision DC signal conditioning-specifically engineered for applications where offset, drift, and low-frequency noise directly limit measurement resolution and long-term calibration stability.
FAQ
What is the maximum input offset voltage specification for the LTC2050CS8#PBF?
The LTC2050CS8#PBF has a maximum input offset voltage of ±3µV over its specified 0°C to 70°C temperature range. This value is guaranteed by design and tested per Analog Devices' characterization methodology-not derived from statistical extrapolation. The typical offset is ±0.5µV at 25°C, and the part maintains this tight tolerance without external trimming, making the LTC2050CS8#PBF suitable for factory-calibration-free instrumentation designs.
Does the LTC2050CS8#PBF support shutdown mode, and how is it controlled?
Yes, the LTC2050CS8#PBF includes an active-low shutdown pin (Pin 5). When pulled to V– (GND), supply current drops to ≤10µA, internal clocking halts, and both inputs and output enter high-impedance states. When left floating or driven ≥(V+ – 0.5V), the device operates normally with 0.8mA typical supply current. This feature is confirmed in the SO-8 ordering table and electrical characteristics section of the LTC2050/LTC2050HV datasheet Rev F.
What is the guaranteed operating temperature range for the LTC2050CS8#PBF?
The LTC2050CS8#PBF is specified for 0°C to 70°C ambient operation, as indicated by the 'C' suffix in its part number and confirmed in the Order Information table (page 3). While the silicon is characterized for –40°C to 125°C, only the C-grade variants-including LTC2050CS8#PBF-are guaranteed to meet all electrical specifications across the 0°C to 70°C range. For extended temperature use, the H-grade LTC2050HS8#PBF (–40°C to 125°C) is recommended.
Can the LTC2050CS8#PBF drive capacitive loads, and what is its phase margin?
The LTC2050CS8#PBF is stable with capacitive loads up to 35pF when driving a 10kΩ load, as verified in the Gain/Phase vs Frequency plot (Figure 8, page 6). Its phase margin exceeds 60° under these conditions. For larger capacitive loads (>100pF), an isolation resistor (≥100Ω) between output and load is required to maintain stability. This behavior is consistent across all LTC2050 variants and documented in the Typical Performance Characteristics section of the datasheet.
Is the LTC2050CS8#PBF RoHS-compliant and lead-free?
Yes, the LTC2050CS8#PBF features a lead-free finish (100% matte tin) and complies with RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. This is explicitly stated in the "LEAD FREE FINISH" column of the Order Information table (page 3) and confirmed by Analog Devices' material declarations. The part marking "2050" and packaging in tape-and-reel (#PBF or #TRPBF) further indicate full RoHS conformance.
LTC2050CS8#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:
- Zero-Drift
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 2V/µs
- Gain Bandwidth Product:
- 3 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 75 pA
- Voltage - Input Offset:
- 0.5 µV
- Current - Supply:
- 800µA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 6 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
LTC2050CS8#PBF FAQ
1.How can I place an order for LTC2050CS8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2050CS8#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 LTC2050CS8#PBF reliable?
The price and inventory of LTC2050CS8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2050CS8#PBF is usually 5 days.
3.What payment methods are accepted for LTC2050CS8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2050CS8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2050CS8#PBF?
LTC2050CS8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2050CS8#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 LTC2050CS8#PBF?
For technical support, including LTC2050CS8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2050CS8#PBF requirements.
6.How does Aetrix verify that LTC2050CS8#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2050CS8#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 LTC2050CS8#PBF meets industry standards.
7.What is the process for return or replacement of LTC2050CS8#PBF?
All LTC2050CS8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2050CS8#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 LTC2050CS8#PBF part is unused and in its original packaging.
Return procedure for LTC2050CS8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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