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Analog Devices Inc. LTC2050IS8#PBF
- Part No.:
- LTC2050IS8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LTC2050IS8#PBF.pdf
- Description:
- IC OPAMP ZERO-DRIFT 1 CIRC 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:267
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Product details
Overview
LTC2050IS8#PBF from Analog Devices is a precision zero-drift operational amplifier in an 8-lead SOIC package, designed for high-accuracy DC-coupled signal conditioning. It delivers 0.5µV typical input offset voltage, 10nV/°C typical offset drift, 1.5µVP-P (0.01Hz–10Hz) input-referred noise, and rail-to-rail output swing into 2kΩ loads - enabling thermocouple amplification, strain gauge interfaces, and medical sensor front-ends where long-term stability and low-frequency fidelity are critical.
For engineers reviewing the LTC2050IS8#PBF datasheet, LTC2050IS8#PBF pinout, LTC2050IS8#PBF application, or LTC2050IS8#PBF equivalent, this page provides verified specifications, SO-8 terminal mapping, real-world use cases in precision instrumentation, and validated alternative options for automotive-grade or extended-temperature designs.
Technical Context
The LTC2050IS8#PBF employs auto-zeroing architecture with a 7.5kHz internal sampling clock to continuously correct input offset and 1/f noise, achieving near-zero DC error over temperature and time. Its CMOS input stage supports ±75pA typical input bias current and 1.7pF input capacitance, while the enhanced output stage drives rail-to-rail into 2kΩ loads with 140dB open-loop gain and 3MHz gain-bandwidth product.
It operates from a single 2.7V to 6V supply (no dual-supply required), features 130dB typical PSRR and CMRR, and maintains stable performance across –40°C to +85°C - confirmed by full-temperature-range electrical characterization per the H-suffix specification tier.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | ±0.5µV typical - enables sub-10µV system-level DC error in 16-bit+ data acquisition without calibration. |
| Offset Drift | 10nV/°C typical - ensures <0.1µV drift over 10°C ambient change, critical for unattended industrial sensors. |
| Low-Frequency Noise | 1.5µVP-P (0.01Hz–10Hz) - supports high-resolution DC measurements in electronic scales and medical ECG front-ends. |
| Supply Range | 2.7V to 6V single supply - simplifies power design in battery-powered portable instrumentation and IoT edge nodes. |
| Output Swing | Rail-to-rail into 2kΩ load - delivers full dynamic range at both supply rails, maximizing ADC utilization in single-supply systems. |
| Gain-Bandwidth | 3MHz - sufficient for anti-alias filtering and closed-loop gains up to 100 in precision active filters and sensor conditioning. |
| PSRR / CMRR | 130dB typical - rejects supply ripple and common-mode interference in noisy industrial environments (e.g., motor drives). |
Pinout & Package
Package: 8-lead plastic SOIC (narrow, 0.150-inch body width), JEDEC MS-012, RoHS-compliant lead-free finish (PBF). Thermal resistance θJA = 150°C/W (SO-8, 2-layer board).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT | Amplified output node; rail-to-rail capable, drives ≥2kΩ loads to within 10mV of either rail. |
| 2 | V– | Negative supply connection; supports single-supply operation down to 2.7V (GND referenced). |
| 3 | +IN | Non-inverting input; CMOS input with ±75pA bias current, extends to V– and within 1V of V+. |
| 4 | –IN | Inverting input; matched to +IN for optimal CMRR; accepts common-mode voltages up to V+ – 1.3V. |
| 5 | SHDN | Active-low shutdown control; pulls supply current to ≤10µA when logic low; floats high for normal operation. |
| 6 | V+ | Positive supply input; accepts 2.7V to 6V; PSRR >130dB minimizes sensitivity to supply noise. |
| 7 | NC | No connect - internally unused; must be left floating or tied to GND per layout best practices. |
| 8 | NC | No connect - internally unused; electrically isolated; no routing or soldering required. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift auto-zeroing | 7.5kHz internal correction cycle eliminates 1/f noise and thermal drift - guarantees µV-level DC accuracy over time and temperature. |
| Rail-to-rail output | Swings within 10mV of V– and V+ into 2kΩ - preserves full signal swing in single-supply 3.3V or 5V systems without level-shifting. |
| High PSRR/CMRR | 130dB typical rejection of supply ripple and common-mode interference - essential for stable operation in noisy factory or automotive environments. |
| Shutdown mode | Reduces quiescent current to ≤10µA via SHDN pin - enables ultra-low-power sleep states in portable and battery-operated devices. |
| Extended temp grade | Specified from –40°C to +85°C (I-grade) - qualified for industrial control, test equipment, and commercial embedded applications. |
Applications
| Thermocouple Amplification | Strain Gauge Signal Conditioning |
|---|---|
|
Use Scenario: Amplifying microvolt-level K-type thermocouple outputs (≈41µV/°C) across –200°C to +1350°C with cold-junction compensation. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with ultra-low offset and drift to preserve absolute temperature accuracy without periodic recalibration. Use Value: Enables ±0.5°C system accuracy over full range using only passive resistor networks and a reference IC (e.g., LT1025A). |
Use Scenario: Reading Wheatstone bridge outputs from load cells or pressure sensors with 2mV/V sensitivity and <100ppm nonlinearity. IC Role / Device Role / Timing Role: Low-noise, high-CMRR instrumentation amplifier front-end that rejects bridge excitation noise and cable-induced interference. Use Value: Achieves 24-bit-equivalent resolution in weigh scales and structural health monitoring by suppressing 1/f noise below 0.1Hz. |
| Medical Instrumentation Front-End | High-Resolution Data Acquisition |
|
Use Scenario: Biopotential signal conditioning for ECG/EEG systems requiring DC-coupled, low-noise amplification of ±5mV signals with 0.05–150Hz bandwidth. IC Role / Device Role / Timing Role: First-stage amplifier with rail-to-rail output driving anti-alias filter and ADC driver - minimizing external component count. Use Value: Eliminates baseline wander and electrode offset drift, reducing need for AC coupling and high-pass filtering that degrades low-frequency fidelity. |
Use Scenario: Precision analog front-end for 20+ bit SAR or delta-sigma ADCs in automated test equipment and calibration standards. IC Role / Device Role / Timing Role: Buffered reference buffer and sensor signal conditioner with guaranteed 0.5µV offset and 10nV/°C drift over full temperature range. Use Value: Supports metrology-grade linearity and long-term stability - meets ANSI C12.20 Class 0.1 and IEC 62053-22 requirements. |
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 | Dual-channel version in MS8 package; identical offset (±0.5µV), drift (10nV/°C), and noise specs; shares same SO-8 footprint but with two amplifiers. | Preferred when space-constrained PCBs require two matched zero-drift amps (e.g., differential input + reference buffer). | Select LTC2051IMS8#PBF only if dual-channel functionality is needed - pinout differs (no SHDN on dual variant); not drop-in compatible. |
| LTC2050HVCS8#PBF | Higher-voltage variant: operates from 2.7V to ±5.5V; same offset/drift/noise; rated for 0°C to 70°C (C-grade) instead of –40°C to 85°C. | Suitable for bipolar supply systems (e.g., ±5V sensor interfaces) but lacks extended temperature qualification for industrial deployment. | Choose LTC2050HVCS8#PBF only for dual-supply designs where extended temperature range is not required - SHDN pin present and functionally identical. |
Compared with LTC2050IS8#PBF, LTC2051IMS8#PBF offers channel density at the cost of functional duplication, while LTC2050HVCS8#PBF trades temperature range for bipolar supply flexibility - neither is pin-compatible, but both share core zero-drift performance for precision DC signal chains.
Availability
LTC2050IS8#PBF is available at Aetrix Electronics and suitable for thermocouple amplification, strain gauge signal conditioning, and medical instrumentation front-ends requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for LTC2050IS8#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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets with precision signal chain solutions.
The LTC2050 family was engineered specifically for ultra-stable, low-noise DC amplification - targeting applications where traditional op amps fail due to drift, 1/f noise, or insufficient PSRR in harsh or battery-constrained environments.
FAQ
What is the maximum operating temperature range for the LTC2050IS8#PBF?
The LTC2050IS8#PBF is specified for operation from –40°C to +85°C (I-grade), with full electrical performance guaranteed across this range per the H-suffix characterization. It is not rated for the –55°C to +150°C range of the HVMP variant, nor the 0°C to 70°C range of the C-grade parts.
Does the LTC2050IS8#PBF include a shutdown feature, and how does it behave?
Yes, the LTC2050IS8#PBF includes an active-low SHDN pin (Pin 5). When pulled low, supply current drops to ≤10µA, internal clocking halts, and both inputs plus the output enter high-impedance state. When floating or pulled high, the LTC2050IS8#PBF operates normally with 800µA typical quiescent current.
Can the LTC2050IS8#PBF drive capacitive loads, and what is its phase margin?
The LTC2050IS8#PBF is unity-gain stable and characterized to drive ≥100pF directly. For larger capacitive loads (>35pF), a series resistor (≥100Ω) between output and load is recommended to maintain ≥45° phase margin. Gain/phase plots in the datasheet confirm stable 3MHz GBW operation with CL = 35pF and RL = 10kΩ.
Is the LTC2050IS8#PBF pin-compatible with other SO-8 op amps like the LT1677 or LT1884?
No, the LTC2050IS8#PBF is not pin-compatible with LT1677 or LT1884. Its SO-8 pinout places SHDN on Pin 5 and uses Pins 7–8 as NC, whereas LT1677 (SO-8) assigns Pin 5 to V– and Pin 8 to V+. Substituting requires PCB redesign - only LTC2051IMS8#PBF shares the same SO-8 package outline but with different pin functions.
What is the input common-mode voltage range of the LTC2050IS8#PBF?
The LTC2050IS8#PBF supports an input common-mode range from V– (GND in single-supply use) up to V+ – 1.3V. At VS = 5V, this allows inputs from 0V to 3.7V - sufficient for direct interfacing with most bridge sensors and thermocouple circuits without level-shifting resistors.
LTC2050IS8#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:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
LTC2050IS8#PBF FAQ
1.How can I place an order for LTC2050IS8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2050IS8#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 LTC2050IS8#PBF reliable?
The price and inventory of LTC2050IS8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2050IS8#PBF is usually 5 days.
3.What payment methods are accepted for LTC2050IS8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2050IS8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2050IS8#PBF?
LTC2050IS8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2050IS8#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 LTC2050IS8#PBF?
For technical support, including LTC2050IS8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2050IS8#PBF requirements.
6.How does Aetrix verify that LTC2050IS8#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2050IS8#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 LTC2050IS8#PBF meets industry standards.
7.What is the process for return or replacement of LTC2050IS8#PBF?
All LTC2050IS8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2050IS8#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 LTC2050IS8#PBF part is unused and in its original packaging.
Return procedure for LTC2050IS8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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