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Analog Devices Inc. LTC1100CN8#PBF
- Part No.:
- LTC1100CN8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
LTC1100CN8#PBF.pdf
- Description:
- IC OPAMP ZERO-DRIFT 1 CIRC 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:426
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Product details
Overview
LTC1100CN8#PBF from Analog Devices (formerly Linear Technology) is a precision zero-drift instrumentation amplifier optimized for DC and low-frequency signal conditioning in high-accuracy sensor interfaces. It delivers fixed gain of 100, 1µV typical input offset voltage, 5nV/°C typical offset drift, and 1.9µVP-P 0.1Hz–10Hz noise - enabling thermocouple and strain gauge measurements with sub-microvolt resolution.
For engineers reviewing the LTC1100CN8#PBF datasheet, LTC1100CN8#PBF pinout, LTC1100CN8#PBF application, or LTC1100CN8#PBF equivalent, key selection criteria include guaranteed 10µV max offset, 100nV/°C max drift, 90dB min CMRR, 18kHz bandwidth at G=100, and operation from single 5V or dual ±8V supplies - all in an 8-pin PDIP package.
Technical Context
The LTC1100CN8#PBF uses chopper-stabilized architecture with internal sampling at 2.8kHz to achieve near-zero DC drift and eliminate 1/f noise. Its fully differential input stage and matched resistor network provide inherent gain accuracy without external components.
It integrates two precision op amps and a high-gain output stage in a self-contained topology: no external gain-setting resistors are required for its fixed G=100 configuration. The COMP pin enables bandwidth tailoring via external capacitor to suppress clock feedthrough and reduce aliasing in ultra-low-noise applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | Fixed 100× (no external resistor required - simplifies layout and eliminates gain error from component tolerance) |
| Input Offset Voltage | ≤10µV max (enables direct measurement of µV-level sensor outputs without nulling circuitry) |
| Offset Drift | ≤100nV/°C max (ensures stable calibration over industrial temperature range −40°C to +85°C) |
| CMRR | ≥90dB (rejects common-mode interference from noisy industrial environments) |
| 0.1Hz–10Hz Noise | 1.9µVP-P (supports high-resolution DC measurements in weigh scales and medical sensors) |
| Supply Range | Single 5V or dual ±2.375V to ±8V (enables compatibility with legacy 5V systems and higher-voltage industrial rails) |
| Output Swing | ±7.5V into 10kΩ at ±8V supply (provides >300mV headroom to rails - avoids clipping near supply limits) |
| Bandwidth | 18kHz at G=100 (sufficient for static and quasi-static sensor signals while rejecting RF interference) |
Pinout & Package
Package: 8-lead plastic DIP (N8), 0.300-inch width, through-hole mounting. RoHS-compliant lead finish (matte tin over nickel).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND REF | System ground reference for internal amplifiers - must connect to clean analog ground to maintain CMRR |
| 2 | CMRR | AC CMRR optimization node - connect 100kΩ + 10pF to ground to maximize rejection above DC |
| 3 | –VIN | Inverting input - forms differential pair with Pin 6; high-impedance (65pA max bias current) |
| 4 | V– | Negative supply rail - supports dual-supply operation down to −8V or single-supply ground reference |
| 5 | V+ | Positive supply rail - accepts up to +8V; enables single 5V operation when V– = GND |
| 6 | VIN | Noninverting input - complements Pin 3 for true differential input with 100dB DC CMRR |
| 7 | COMP | Bandwidth control node - add capacitor to VOUT to set dominant pole and suppress 2.8kHz sampling artifacts |
| 8 | VOUT | Differential-to-single-ended output - rail-to-rail capable within 300mV; drives 10kΩ loads directly |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift architecture | Eliminates thermal drift and 1/f noise - maintains µV-level accuracy across temperature and time |
| Self-contained G=100 gain | No external resistors needed - removes gain error sources and board space for trimming networks |
| Chopper anti-aliasing | Integrated filtering attenuates aliasing products ≥60dB - reduces need for external anti-aliasing filters |
| Single-supply capability | Operates from 5V with inputs referenced to ground - simplifies power design in battery-powered sensors |
| Hermetic-grade stability | Specified over −40°C to +85°C with guaranteed 100nV/°C drift - suitable for unregulated industrial enclosures |
| Low input bias current | 65pA max - prevents loading errors in high-impedance pH electrodes and piezoresistive sensors |
Applications
| Thermocouple Amplifiers | Strain Gauge Amplifiers |
|---|---|
|
Use Scenario: Amplifying µV-level Seebeck voltages from Type K/J thermocouples in furnace controllers and environmental chambers. IC Role / Device Role / Timing Role: Precision DC instrumentation amplifier providing fixed 100× gain and cold-junction compensation interface. Use Value: 10µV max offset ensures <0.25°C error at 25°C; 100nV/°C drift limits temperature drift to <0.025°C/°C ambient change. |
Use Scenario: Conditioning mV-level bridge outputs from metal foil strain gauges in load cells and pressure transducers. IC Role / Device Role / Timing Role: High-CMRR differential amplifier rejecting common-mode noise from motor drives and switching power supplies. Use Value: 90dB min CMRR rejects >99.9% of 60Hz pickup; 1.9µVP-P noise enables 16-bit+ effective resolution without averaging. |
| Differential-to-Single-Ended Converters | Medical Sensor Front-Ends |
|
Use Scenario: Converting balanced outputs from isolation amplifiers or transformer-coupled sensors to single-ended signals for ADC input. IC Role / Device Role / Timing Role: Precision gain block with rail-swing headroom and low distortion for data acquisition systems. Use Value: ±7.5V output swing into 10kΩ at ±8V supply preserves dynamic range; 20ppm max nonlinearity avoids harmonic distortion in calibrated systems. |
Use Scenario: Front-end amplification for ECG, EEG, and bioimpedance sensors requiring ultra-low noise and DC stability. IC Role / Device Role / Timing Role: Patient-isolated signal conditioner with galvanic separation and sub-µV input-referred noise. Use Value: 65pA max bias current prevents electrode polarization; 1.9µVP-P noise supports detection of <1µV cardiac potentials. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar instrumentation amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8429ARZ | Lower noise (1.3nV/√Hz), wider bandwidth (4.5MHz), but requires external gain resistors and has higher offset drift (0.3µV/°C) | Better for high-speed, wideband biomedical acquisition; less suited for ultra-stable DC thermocouple apps | Select AD8429ARZ only if bandwidth >100kHz is required and external resistor placement is acceptable |
| LTC2053CMS8#PBF | Same zero-drift architecture, lower supply current (1.1mA vs 2.8mA), but G=100 requires external resistor and has higher 0.1–10Hz noise (3.5µVP-P) | Preferred for battery-powered portable instruments where power matters more than ultimate noise floor | Choose LTC2053CMS8#PBF when optimizing for <2mA supply current and can accommodate external gain setting |
Compared with LTC1100CN8#PBF, AD8429ARZ trades DC precision for speed and flexibility, while LTC2053CMS8#PBF sacrifices some noise performance and self-contained gain to reduce quiescent current - making LTC1100CN8#PBF optimal for fixed-gain, ultra-stable DC measurement where layout simplicity and long-term calibration integrity are critical.
Availability
LTC1100CN8#PBF is available at Aetrix Electronics and suitable for thermocouple amplifiers, strain gauge interfaces, differential-to-single-ended conversion, and medical sensor front-ends requiring stable component supply across extended product lifecycles.
Supply support for LTC1100CN8#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. (acquired Linear Technology in 2017) designs high-performance analog, mixed-signal, and digital signal processing ICs for precision measurement and industrial control.
The LTC1100CN8#PBF belongs to Linear Technology's precision instrumentation amplifier family, engineered specifically for µV-level DC signal conditioning in harsh, temperature-varying environments without recalibration.
FAQ
What is the maximum operating temperature range for the LTC1100CN8#PBF?
The LTC1100CN8#PBF is rated for operation from −40°C to +85°C. This commercial-grade temperature range is specified in the Absolute Maximum Ratings table and supported by full electrical characterization across the range, including guaranteed 10µV max input offset and 100nV/°C max drift. It is not rated for extended military or automotive temperature grades.
Does the LTC1100CN8#PBF require external components to set gain?
No - the LTC1100CN8#PBF is internally configured for fixed gain of 100 and requires no external resistors or trim pots. This self-contained architecture eliminates gain error from resistor tolerance and temperature coefficient, delivering 0.075% max gain error and 20ppm max nonlinearity as specified in the Electrical Characteristics table.
Can the LTC1100CN8#PBF operate from a single 5V supply?
Yes - the LTC1100CN8#PBF supports true single-supply operation from 5V (with V– tied to ground). Its input common-mode range includes ground, and output swings to within 300mV of both rails. However, differential input signals must remain positive, as negative inputs will saturate the output at zero volts.
What is the purpose of the COMP pin on the LTC1100CN8#PBF?
The COMP pin (Pin 7) on the LTC1100CN8#PBF allows bandwidth reduction by connecting an external capacitor to VOUT. This forms an RC filter with the internal 247kΩ resistor to suppress 2.8kHz sampling clock feedthrough and minimize aliasing - critical for ultra-low-noise DC applications like precision weigh scales and laboratory instruments.
Is the LTC1100CN8#PBF RoHS compliant and lead-free?
Yes - the LTC1100CN8#PBF carries the #PBF suffix, indicating it is lead-free and RoHS compliant per EU Directive 2011/65/EU. The device uses matte tin-plated leads and meets JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1), with unlimited floor life at ≤30°C/60% RH.
LTC1100CN8#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LTCMOS™
- 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:
- -
- Gain Bandwidth Product:
- 18 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 2.5 pA
- Voltage - Input Offset:
- 1 µV
- Current - Supply:
- 2.4mA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 5 V
- Voltage - Supply Span (Max):
- 16 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
LTC1100CN8#PBF FAQ
1.How can I place an order for LTC1100CN8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1100CN8#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 LTC1100CN8#PBF reliable?
The price and inventory of LTC1100CN8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1100CN8#PBF is usually 5 days.
3.What payment methods are accepted for LTC1100CN8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1100CN8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1100CN8#PBF?
LTC1100CN8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1100CN8#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 LTC1100CN8#PBF?
For technical support, including LTC1100CN8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1100CN8#PBF requirements.
6.How does Aetrix verify that LTC1100CN8#PBF is sourced from the original manufacturer or authorized distributors?
All LTC1100CN8#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 LTC1100CN8#PBF meets industry standards.
7.What is the process for return or replacement of LTC1100CN8#PBF?
All LTC1100CN8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1100CN8#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 LTC1100CN8#PBF part is unused and in its original packaging.
Return procedure for LTC1100CN8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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