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Analog Devices Inc. LTC1050ACN8#PBF
- Part No.:
- LTC1050ACN8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
LTC1050ACN8#PBF.pdf
- Description:
- IC OPAMP ZERO-DRIFT 1 CIRC 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:168
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Product details
Overview
LTC1050ACN8#PBF from Analog Devices (formerly Linear Technology) is a precision zero-drift operational amplifier with integrated sample-and-hold capacitors, designed for ultra-low-offset DC signal conditioning. It delivers 5µV max input offset voltage, 0.05µV/°C max drift, 1.6µVP-P (0.1Hz–10Hz) noise, and 2.5MHz gain bandwidth - enabling high-resolution thermocouple amplification, strain gauge interfaces, and medical instrumentation requiring sub-microvolt stability.
For engineers reviewing the LTC1050ACN8#PBF datasheet, LTC1050ACN8#PBF pinout, LTC1050ACN8#PBF application, or LTC1050ACN8#PBF equivalent, key selection criteria include guaranteed DC accuracy over –40°C to +85°C, internal capacitor integration eliminating external timing components, single-supply operation down to 4.75V, and pin compatibility with legacy chopper-stabilized op amps like the LT1050/LT1051 family.
Technical Context
The LTC1050ACN8#PBF employs a chopper-stabilized architecture with on-die sampling capacitors, eliminating the need for external 1µF hold capacitors required by predecessors like the LT1043 or LT1050. Its internal 2.5kHz sampling frequency suppresses 1/f noise while maintaining low aliasing error and 3ms typical overload recovery time.
It features rail-to-rail output swing to ground, input common-mode range extending to both supply rails, and an optional external clock input (Pin 5) for synchronization - supporting precise timing-critical applications such as data acquisition front-ends and battery-operated sensor nodes where thermal EMF minimization and long-term DC stability are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | ±5 µV max - enables direct measurement of µV-level sensor outputs without trimming. |
| Offset Drift | ±0.05 µV/°C max - ensures <1 µV total drift over 20°C ambient change, critical for lab-grade instruments. |
| 0.1Hz–10Hz Noise | 1.6 µVP-P typ - supports 16+ bit resolution in low-frequency data acquisition without external filtering. |
| Gain Bandwidth Product | 2.5 MHz - allows stable closed-loop gain ≥10 at 200 kHz, suitable for anti-aliasing filter drivers. |
| Supply Current | 1 mA typ - enables low-power operation in portable medical devices and remote sensor nodes. |
| Common-Mode Rejection | 120 dB min at DC & 60 Hz - rejects interference from noisy industrial power lines and shared ground returns. |
| Internal Sampling Freq | 2.5 kHz - optimally balances 1/f noise reduction and settling time for DC-coupled precision systems. |
Pinout & Package
Package: 8-lead PDIP (N8), 0.300-inch width, through-hole mounting. RoHS-compliant lead finish, JEDEC MS-001 standard footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | No Connect | Internally unconnected; must remain floating - no external capacitor required (unlike LT1043 Pin 1). |
| 2 | Inverting Input (–IN) | Differential input node; guarded layout recommended to minimize thermal EMF errors in microvolt applications. |
| 3 | Non-Inverting Input (+IN) | High-impedance input (±20 pA bias current); requires matched thermal paths to avoid Seebeck-induced offset. |
| 4 | V– (Negative Supply) | Ground reference for dual-supply operation or negative rail in ±5V systems; supports single-supply down to 4.75V. |
| 5 | External Clock Input | Optional TTL-compatible sync input; internal oscillator disabled when driven - enables multi-device clock alignment. |
| 6 | Output (OUT) | Rail-to-ground swing (±4.85 V @ 10 kΩ); drives 100 mA via external buffer (e.g., LT1010) per TA08 schematic. |
| 7 | V+ (Positive Supply) | Accepts 4.75V–16V single supply or ±2.375V–±8V dual supply; PSRR ≥125 dB ensures immunity to supply ripple. |
| 8 | No Connect | Internally unconnected; must remain floating - eliminates need for external hold capacitor (vs. LT1043 Pin 8). |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Sample-and-Hold Capacitors | Removes two 1µF external capacitors required by LT1043/LT1050 - reduces PCB area, BOM count, and leakage-induced error sources. |
| Guaranteed Low-Frequency Noise | 100% lot-tested for 0.1Hz–10Hz noise; ensures predictable 16-bit+ resolution in weigh scales and thermocouple amplifiers. |
| Thermal EMF Mitigation Support | Specified warm-up drift dominated by package-induced copper/kovar junctions - guides board layout (guard rings, thermal symmetry) for <0.1 µV error. |
| Pin-Compatible Drop-in Replacement | Direct substitute for LT1043, LT1050, and industry-standard chopper op amps (e.g., ICL7650) without PCB modification. |
| Single-Supply Operation | Functions from 4.75V to 16V with rail-to-ground output swing - enables use in 5V microcontroller-based sensor nodes without negative rail generation. |
Applications
| Thermocouple Amplification | Strain Gauge Signal Conditioning |
|---|---|
Use Scenario: Amplifying Type K thermocouple outputs (41 µV/°C) across 0°C–100°C range with cold-junction compensation. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with 1000× fixed gain and 10Hz noise bandwidth. Use Value: Achieves <0.5 LSB error for 10-bit ADC at 10Hz BW, validated in TA04 reference design. | Use Scenario: Reading mV-level bridge outputs from load cells in electronic scales and industrial force sensors. IC Role / Device Role / Timing Role: Low-drift, low-noise instrumentation amplifier front-end with 120 dB CMRR at 60 Hz. Use Value: Enables 20,000:1 dynamic range and <0.01% linearity error under AC mains interference. |
| Medical Instrumentation | High-Resolution Data Acquisition |
Use Scenario: Biopotential signal conditioning (ECG, EEG) requiring DC stability and sub-µV noise floor. IC Role / Device Role / Timing Role: First-stage amplifier with guard-driven inputs and matched thermal layout per TA06. Use Value: Maintains <5 µV offset drift over 8-hour clinical session, meeting IEC 60601-2-27 requirements. | Use Scenario: Front-end for 18-bit SAR ADCs in automated test equipment and calibration standards. IC Role / Device Role / Timing Role: DC-accurate buffer and anti-aliasing filter driver with 2.5 MHz GBW and 4 V/µs slew rate. Use Value: Supports 100 kSPS sampling with <0.01% gain error and <1 ppm THD in TA19 filter topology. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC2050CS6#PBF | SOT-23-6 package; 0.005 µV/°C max drift; 1.5 µVP-P noise; lower supply current (850 µA). | Space-constrained portable designs; not pin-compatible; requires PCB redesign. | Select for ultra-low-drift battery-powered sensors where board area is critical and layout can be optimized for thermal symmetry. |
| LTC1051CN8#PBF | Dual-channel version; identical specs per channel; shared supply pins reduce system-level power routing complexity. | Two-sensor systems (e.g., differential thermocouple pairs); same N8 footprint enables drop-in dual-channel upgrade. | Choose when scaling from single to dual sensor channels without changing layout - leverages identical AC/DC performance and thermal behavior. |
Compared with LTC2050CS6#PBF, the LTC1050ACN8#PBF offers proven through-hole reliability and legacy design continuity; versus LTC1051CN8#PBF, it provides lower cost and simpler thermal management for single-channel applications requiring highest DC integrity.
Availability
LTC1050ACN8#PBF is available at Aetrix Electronics and suitable for thermocouple amplification, strain gauge interfaces, and medical instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC1050ACN8#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 legacy of high-precision analog ICs for demanding measurement applications.
The LTC1050ACN8#PBF belongs to Linear's zero-drift op amp product line, engineered specifically for DC-accurate signal chains in scientific instrumentation, industrial process control, and regulatory-compliant medical devices where microvolt-level stability is non-negotiable.
FAQ
What is the operating temperature range for the LTC1050ACN8#PBF?
The LTC1050ACN8#PBF is rated for operation from –40°C to +85°C. This 'AC' grade temperature range is specified in the Absolute Maximum Ratings table and confirmed across all electrical characteristics (e.g., offset voltage, CMRR, PSRR) with ● symbols indicating full-range guarantee. It is distinct from the 'H' grade (–40°C to +125°C) and obsolete 'AM' grade (–55°C to +125°C).
Does the LTC1050ACN8#PBF require external capacitors for chopper stabilization?
No, the LTC1050ACN8#PBF does not require external capacitors for chopper stabilization. Its defining feature is the integration of on-chip sample-and-hold capacitors - explicitly replacing the two 1µF external capacitors needed by predecessors like the LT1043. Pins 1 and 8 are No Connect, and the internal 2.5kHz sampling clock operates autonomously unless overridden by an external signal on Pin 5.
Can the LTC1050ACN8#PBF operate from a single 5V supply?
Yes, the LTC1050ACN8#PBF supports true single-supply operation from 4.75V to 16V. Its input common-mode range extends to the negative rail (V–), and its output swings fully to ground. The datasheet confirms PSRR ≥125 dB and proper functionality down to 4.75V, making it suitable for 5V microcontroller-based systems without negative rail generation - as demonstrated in TA04 and TA05 reference circuits.
What is the purpose of Pin 5 on the LTC1050ACN8#PBF?
Pin 5 is the optional external clock input for the LTC1050ACN8#PBF. When left floating, the device uses its internal 2.5kHz oscillator. Applying a TTL-compatible square wave to Pin 5 synchronizes sampling across multiple LTC1050ACN8#PBF devices or aligns with system clocks - critical for coherent multi-channel data acquisition. The internal oscillator signal appears on Pin 5 with weak drive strength, so buffering is required if used to drive external loads.
Is the LTC1050ACN8#PBF pin-compatible with the LT1043?
Yes, the LTC1050ACN8#PBF is pin-compatible with the LT1043 in the 8-pin DIP configuration. Both share identical Pin 2 (–IN), Pin 3 (+IN), Pin 4 (V–), Pin 6 (OUT), and Pin 7 (V+) assignments. However, LTC1050ACN8#PBF Pins 1 and 8 are No Connect (no external capacitors needed), whereas LT1043 requires 1µF capacitors on those pins. Pin 5 on LTC1050ACN8#PBF is an optional clock input, unused on LT1043.
LTC1050ACN8#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- Zero-Drift
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 4V/µs
- Gain Bandwidth Product:
- 2.5 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 10 pA
- Voltage - Input Offset:
- 0.5 µV
- Current - Supply:
- 1mA
- 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:
- Through Hole
- Supplier Device Package:
- 8-PDIP
LTC1050ACN8#PBF FAQ
1.How can I place an order for LTC1050ACN8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1050ACN8#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 LTC1050ACN8#PBF reliable?
The price and inventory of LTC1050ACN8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1050ACN8#PBF is usually 5 days.
3.What payment methods are accepted for LTC1050ACN8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1050ACN8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1050ACN8#PBF?
LTC1050ACN8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1050ACN8#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 LTC1050ACN8#PBF?
For technical support, including LTC1050ACN8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1050ACN8#PBF requirements.
6.How does Aetrix verify that LTC1050ACN8#PBF is sourced from the original manufacturer or authorized distributors?
All LTC1050ACN8#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 LTC1050ACN8#PBF meets industry standards.
7.What is the process for return or replacement of LTC1050ACN8#PBF?
All LTC1050ACN8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1050ACN8#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 LTC1050ACN8#PBF part is unused and in its original packaging.
Return procedure for LTC1050ACN8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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