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Analog Devices Inc. LTC1050CN#PBF
- Part No.:
- LTC1050CN#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
LTC1050CN#PBF.pdf
- Description:
- IC OPAMP ZERO-DRIFT 1 CIRC 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:173
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Product details
Overview
LTC1050CN#PBF from Analog Devices (formerly Linear Technology) is a precision zero-drift operational amplifier with integrated sample-and-hold capacitors, enabling true DC accuracy without external components. It delivers 5µV max input offset voltage, 0.05µV/°C max drift, 1.6µVP-P (0.1Hz–10Hz) noise, and 2.5MHz gain-bandwidth product at 1mA supply current - ideal for thermocouple amplification and high-resolution data acquisition where microvolt-level stability is critical.
For engineers reviewing the LTC1050CN#PBF datasheet, LTC1050CN#PBF pinout, LTC1050CN#PBF application, or LTC1050CN#PBF equivalent, key selection considerations include its internal capacitor architecture eliminating external timing caps, ±4.85V output swing into 10kΩ, 120dB minimum CMRR at DC and 60Hz, single-supply operation down to 4.75V, and compatibility with legacy chopper-stabilized op-amps like the LT1050 and ICL7650 in 8-pin DIP layouts.
Technical Context
The LTC1050CN#PBF uses auto-zeroing and chopper stabilization in cascade to achieve ultra-low offset and drift, with an internal 2.5kHz sampling frequency (divisible by 4 from its oscillator). Its architecture integrates two 1µF on-chip hold capacitors - eliminating the external capacitors required by predecessors like the LTC1043 or ICL7650 - while maintaining full rail-to-rail common-mode input range (V– to V+) and ground-swinging output capability.
Pin 5 supports optional TTL-compatible external clock synchronization (2.5kHz nominal internal frequency), and pins 1 & 8 are unconnected NC terminals - unlike pin-compatible predecessors that require those pins for external capacitors. The device operates across –40°C to +85°C (Commercial grade) and achieves 130dB minimum large-signal voltage gain and 125dB minimum PSRR under ±5V supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | ±5 µV max - enables direct measurement of sub-millivolt sensor outputs without nulling circuitry |
| Offset Drift | ±0.05 µV/°C max - ensures <1 µV total drift over 20°C ambient change, critical for lab-grade instrumentation |
| Noise (0.1–10 Hz) | 1.6 µVP-P - supports 18-bit+ resolution in low-frequency data acquisition systems |
| Gain Bandwidth Product | 2.5 MHz - provides stable closed-loop gain up to ~200 kHz at unity-gain stable configuration |
| Slew Rate | 4 V/µs - allows accurate reproduction of fast transients in precision signal conditioning paths |
| Supply Current | 1 mA typical - enables low-power battery-operated precision front-ends without sacrificing DC performance |
| CMRR | ≥120 dB at DC and 60 Hz - rejects line-frequency interference in medical and industrial sensor interfaces |
Pinout & Package
Package: 8-lead PDIP (N8), 0.300-inch width, RoHS-compliant lead finish (Pb-free, #PBF suffix). Pin 1 and Pin 8 are No Connect (NC); Pin 5 is optional external clock input; case (Pin 4) is internally connected to V+ in metal-can variants but isolated in plastic DIP.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | No Connect (NC) | Not bonded; must remain unconnected - unlike LTC1043 or ICL7650 which require capacitor to this pin |
| 2 | Inverting Input (–IN) | High-impedance differential input node; bias current ≤60 pA enables picoampere-level source interfacing |
| 3 | Non-inverting Input (+IN) | DC-coupled input with full common-mode range from V– to V+, including ground reference |
| 4 | V– (Negative Supply) | Power supply return; in N8 package, electrically isolated from case (unlike H-package metal can) |
| 5 | External Clock Input | TTL-compatible sync input; internal oscillator disabled when driven; sampling frequency = fCLK/4 |
| 6 | Output (OUT) | Rail-to-rail capable output stage; swings to within 150 mV of V– (ground) and 150 mV of V+ under 10kΩ load |
| 7 | V+ (Positive Supply) | Primary positive rail; supports single-supply operation from 4.75V to 16V total supply (V+ to V–) |
| 8 | No Connect (NC) | Not bonded; floating - no decoupling or bypass required at this terminal |
Key Features
| Feature | Design Value |
|---|---|
| On-chip sample-and-hold capacitors | Two integrated 1µF capacitors eliminate need for external timing components, reducing board area and leakage-induced error sources |
| Zero-drift architecture | Auto-zero + chopper cascade achieves 0.5µV typical offset and 0.01µV/°C typical drift - verified across temperature and time |
| Single-supply operation | Functional from 4.75V to 16V total supply; input common-mode includes ground, output swings to ground - simplifies 5V system integration |
| Guaranteed noise performance | 100% lot-tested for 0.1–10Hz noise; 1.6µVP-P max ensures predictable low-frequency SNR in strain gauge and thermocouple circuits |
| Pin compatibility with legacy choppers | Direct drop-in replacement for ICL7650/7652 in 8-pin DIP sockets; NC pins replace capacitor connection points, minimizing redesign effort |
Applications
| Thermocouple Amplification | Electronic Weighing Scales |
|---|---|
Use Scenario: Amplifying µV-level Seebeck voltages from Type K/J thermocouples across 0–100°C range with cold-junction compensation. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with ultra-low offset drift, rejecting thermal EMFs via matched layout and guard ring techniques. Use Value: Enables <0.1°C measurement resolution without manual calibration; 120dB CMRR suppresses 60Hz pickup in unshielded lab environments. | Use Scenario: Conditioning mV outputs from load-cell bridges in industrial weighing platforms requiring 24-bit ADC interface. IC Role / Device Role / Timing Role: Low-drift, low-noise instrumentation amplifier front-end with programmable gain and ground-referenced output. Use Value: Delivers <1ppm linearity error over temperature; integrated capacitors prevent aging-related gain drift seen with discrete chopper designs. |
| Medical Instrumentation | Strain Gauge Signal Conditioning |
Use Scenario: Biopotential signal acquisition (ECG, EEG) where electrode half-cell potentials demand sub-µV baseline stability. IC Role / Device Role / Timing Role: First-stage amplifier with input-referred noise <2µVP-P, high PSRR (>125dB), and ESD-protected inputs per IEC 61000-4-2. Use Value: Eliminates 50/60Hz notch filters; enables true DC-coupled patient monitoring with <10nV/√Hz noise density below 10Hz. | Use Scenario: Wheatstone bridge excitation and amplification in structural health monitoring systems exposed to wide thermal gradients. IC Role / Device Role / Timing Role: Dual-role amplifier: excitation buffer + differential gain stage with matched resistor networks. Use Value: 0.05µV/°C drift ensures <5µV total offset shift over –40°C to +85°C operating range - critical for long-term calibration retention. |
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#TRMPBF | Single-channel zero-drift op-amp in SOT-23; 0.25µV/°C max drift, 1.5µVP-P noise, 3MHz GBW, 1.2mA supply current | Smaller footprint and lower power, but lacks integrated capacitors - requires external 1µF caps and careful PCB layout to match LTC1050CN#PBF's low-leakage performance | Select for space-constrained portable instruments where board-level guarding and low-EMF layout are feasible |
| OPA189IDBVR | Single zero-drift op-amp in SOT-23; 0.005µV/°C typical drift, 0.1µVP-P noise (0.1–10Hz), 14MHz GBW, 1.3mA supply current | Higher bandwidth and lower noise, but requires external 1µF capacitors and has narrower common-mode range (V– + 0.1V to V+ – 1.5V) | Select for high-speed precision applications needing >1MHz closed-loop bandwidth, accepting added layout complexity |
Compared with LTC2050CS6#TRMPBF and OPA189IDBVR, the LTC1050CN#PBF uniquely integrates timing capacitors to guarantee picoampere input leakage and microvolt-level stability without external component dependencies - making it optimal for legacy DIP-based industrial instrumentation where layout control is limited.
Availability
LTC1050CN#PBF is available at Aetrix Electronics and suitable for thermocouple amplifiers, electronic scales, and medical instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC1050CN#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 technical and manufacturing continuity for legacy Linear parts including the LTC1050 series.
The LTC1050CN#PBF belongs to Linear's precision analog amplifier product line, designed specifically for DC-accurate signal conditioning in sensor interfaces where offset, drift, and low-frequency noise dominate system error budgets.
FAQ
What is the maximum operating temperature range for the LTC1050CN#PBF?
The LTC1050CN#PBF is rated for commercial temperature operation from –40°C to +85°C. This range is validated per the Absolute Maximum Ratings table and applies to all electrical specifications unless otherwise noted. The device features a TJMAX of 150°C and θJA of 70°C/W in the N8 package, supporting reliable operation in enclosed industrial enclosures without forced airflow.
Does the LTC1050CN#PBF require external capacitors for basic operation?
No, the LTC1050CN#PBF does not require external capacitors for core zero-drift operation. It integrates two 1µF on-chip sample-and-hold capacitors - a defining feature distinguishing it from predecessors like the ICL7650. Pins 1 and 8 are NC and must remain unconnected. External capacitors are only needed if using Pin 5 for external clock synchronization or for additional power supply decoupling (0.1µF ceramic recommended near V+/V–).
Can the LTC1050CN#PBF operate from a single 5V supply?
Yes, the LTC1050CN#PBF supports true single-supply operation from 4.75V to 16V total supply. With V– grounded and V+ = 5V, its input common-mode range extends from 0V (ground) to 2.7V, and its output swings to within 150mV of ground and 150mV of 5V under 10kΩ load - enabling direct interfacing with 5V ADCs and microcontrollers without level-shifting circuitry.
How does the LTC1050CN#PBF compare to the LTC1043 in precision applications?
The LTC1050CN#PBF is a precision op-amp optimized for DC accuracy and low-frequency stability, whereas the LTC1043 is a precision switched-capacitor building block (dual chopper-stabilized op-amp + switch matrix) used for sample-and-hold, modulators, and precision integrators. While both leverage chopper techniques, the LTC1050CN#PBF integrates timing elements and delivers superior DC specs (5µV offset vs. LTC1043's 10µV), while the LTC1043 offers greater architectural flexibility for custom signal paths.
Is the LTC1050CN#PBF pin-compatible with the ICL7650?
Yes, the LTC1050CN#PBF is pin-compatible with the ICL7650 in 8-pin DIP packages. Pins 2, 3, 4, 5, 6, and 7 serve identical functions. Pins 1 and 8 are NC on the LTC1050CN#PBF but require 1µF capacitors on the ICL7650; leaving those capacitors in place causes no harm, making the LTC1050CN#PBF a direct plug-in upgrade that eliminates capacitor-related leakage and aging errors.
LTC1050CN#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 14-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:
- 14-PDIP
LTC1050CN#PBF FAQ
1.How can I place an order for LTC1050CN#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1050CN#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 LTC1050CN#PBF reliable?
The price and inventory of LTC1050CN#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1050CN#PBF is usually 5 days.
3.What payment methods are accepted for LTC1050CN#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1050CN#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1050CN#PBF?
LTC1050CN#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1050CN#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 LTC1050CN#PBF?
For technical support, including LTC1050CN#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1050CN#PBF requirements.
6.How does Aetrix verify that LTC1050CN#PBF is sourced from the original manufacturer or authorized distributors?
All LTC1050CN#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 LTC1050CN#PBF meets industry standards.
7.What is the process for return or replacement of LTC1050CN#PBF?
All LTC1050CN#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1050CN#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 LTC1050CN#PBF part is unused and in its original packaging.
Return procedure for LTC1050CN#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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