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Analog Devices Inc. LT1884AIN8#PBF
- Part No.:
- LT1884AIN8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
LT1884AIN8#PBF.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:101
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Product details
Overview
LT1884AIN8#PBF from Analog Devices (formerly Linear Technology) is a dual precision rail-to-rail output operational amplifier with picoamp-level input bias current (400pA max), 50µV max input offset voltage, and 0.8µV/°C max offset drift - designed for thermocouple amplification, bridge transducer conditioning, and battery-powered instrumentation where DC accuracy and low-power operation are critical.
For engineers reviewing the LT1884AIN8#PBF datasheet, LT1884AIN8#PBF pinout, LT1884AIN8#PBF application, or LT1884AIN8#PBF equivalent, this page delivers verified specifications, package-confirmed pin functions, real-world use cases in precision analog signal chains, and two validated alternative parts with documented technical and application differences.
Technical Context
The LT1884AIN8#PBF implements a bipolar input stage with on-chip input bias current cancellation, enabling ultralow 400pA max input bias current while maintaining high open-loop gain (1 million min) and CMRR (106 dB min over full temperature range). Its rail-to-rail output swing (within 40mV of V– and 220mV of V+) supports single-supply operation down to 2.7V total supply.
It features matched dual-amplifier architecture with guaranteed offset voltage match ≤70µV (0°C to 70°C) and 0.4–1.2µV/°C match drift, making it suitable for differential sensing and instrumentation amplifier front-ends requiring channel-to-channel consistency without external trimming.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 50µV max at 25°C; ensures ≤110µV worst-case error across –40°C to 85°C operating range |
| Input Bias Current | 400pA max at 25°C; enables accurate amplification of high-impedance sources (e.g., pH electrodes, photodiodes) |
| Offset Voltage Drift | 0.8µV/°C max; limits thermal-induced error to <6.4µV over 80°C ambient shift |
| Rail-to-Rail Output Swing | Swings to within 40mV of V– and 220mV of V+ at 1mA load; supports 3.3V single-supply systems with >2.9V dynamic range |
| Supply Current per Amplifier | 1.4mA max at 5V supply; enables dual-channel precision amplification under 3mW total power |
| Gain-Bandwidth Product | 2MHz typical; provides stable unity-gain operation with ≥60° phase margin into 300pF capacitive loads |
| Common-Mode Rejection | 106dB min over –40°C to 85°C; rejects >200k:1 common-mode voltage variation in bridge circuits |
Pinout & Package
LT1884AIN8#PBF is housed in an 8-lead PDIP (N8) package with industry-standard dual op amp pinout and 0.300-inch body width. Thermal resistance θJA = 130°C/W enables operation up to +85°C ambient without forced airflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT A) | Amplifier A output | Drives feedback network or downstream stage; rail-to-rail swing supports low-headroom signal routing |
| 2 (–IN A) | Inverting input of Amp A | High-impedance node; requires guard ring layout to preserve 400pA bias current spec |
| 3 (+IN A) | Noninverting input of Amp A | Accepts sensor signals directly; input common-mode range extends to V– +1.2V and V+ –1.2V |
| 4 (V–) | Negative supply rail | Reference for dual-supply operation or ground in single-supply configs; sinks output current |
| 5 (+IN B) | Noninverting input of Amp B | Independent high-Z input; matches Amp A's offset and bias specs for differential pair use |
| 6 (–IN B) | Inverting input of Amp B | Paired with Pin 5 for matched channel performance; offset match ≤70µV enables <0.007% gain error in IAs |
| 7 (OUT B) | Amplifier B output | Provides second independent precision channel; identical AC/DC specs to Pin 1 |
| 8 (V+) | Positive supply rail | Accepts 2.7V–36V total supply; PSRR ≥108dB minimizes supply noise coupling into output |
Key Features
| Feature | Design Value |
|---|---|
| Picoamp input bias current | 400pA max enables direct interfacing with >100MΩ source impedances without significant DC error |
| Matched dual architecture | Offset voltage match ≤70µV (0°C–70°C) supports precision differential amplification without calibration |
| Rail-to-rail output | Delivers full 2.9Vpp swing on 3.3V single supply, maximizing ADC dynamic range utilization |
| Low 0.8µV/°C drift | Maintains sub-100µV total offset error across industrial temperature range (–40°C to +85°C) |
| 1.4mA max supply current | Permits dual-channel precision amplification in battery-powered devices with >1-year runtime on AA cells |
Applications
| Thermocouple Amplifiers | Bridge Transducer Conditioners |
|---|---|
Use Scenario: Amplifying µV-level thermocouple outputs (e.g., Type K, 41µV/°C) in industrial temperature monitoring systems with 0.1°C resolution. IC Role / Device Role / Timing Role: Primary signal-conditioning amplifier providing gain, filtering, and cold-junction compensation interface. Use Value: 50µV max VOS and 0.8µV/°C drift limit thermal measurement error to <0.2°C over 85°C ambient range. |
Use Scenario: Conditioning Wheatstone bridge outputs from strain gauges in load cells and pressure sensors with ±0.05% full-scale accuracy. IC Role / Device Role / Timing Role: First-stage differential amplifier with matched inputs rejecting common-mode bridge excitation noise. Use Value: 106dB CMRR and ≤70µV offset match suppress bridge imbalance errors below 0.007% of full scale. |
| Instrumentation Amplifiers | Battery-Powered Systems |
Use Scenario: Building discrete 3-op-amp instrumentation amplifiers for medical ECG front-ends requiring >110dB CMRR and <1µVpp noise. IC Role / Device Role / Timing Role: Input-stage amplifier providing high-Z, low-bias, matched-pair gain with rail-to-rail output headroom. Use Value: 400pA input bias prevents electrode polarization errors; rail-to-rail swing preserves signal integrity into ADC drivers. |
Use Scenario: Signal conditioning in portable gas analyzers using electrochemical sensors with nA-level output currents. IC Role / Device Role / Timing Role: Low-power transimpedance amplifier converting sensor current to voltage with minimal quiescent consumption. Use Value: 1.4mA max supply current enables continuous 24/7 operation on coin-cell batteries for >6 months. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision dual op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC2050CS8#PBF | Zero-drift architecture; 3µV max VOS, but 1.2mA supply current and limited 5.5V max supply | Better DC accuracy for ultra-low-drift applications; unsuitable for >5.5V supplies or high-speed settling | Select LTC2050CS8#PBF when VOS stability over time/temperature outweighs supply voltage flexibility and slew rate |
| LT1881CS8#PBF | Lower 100pA max input bias current, but 80µV max VOS and no guaranteed offset match spec | Superior for ultra-high-impedance photodiode amps; lacks matched-pair performance for instrumentation front-ends | Select LT1881CS8#PBF when input bias dominates error budget and channel matching is not required |
Compared with LT1884AIN8#PBF, LTC2050CS8#PBF offers superior long-term VOS stability but sacrifices supply voltage range and speed, while LT1881CS8#PBF improves input bias by 4× but trades off offset accuracy and matching - making LT1884AIN8#PBF the balanced choice for general-purpose precision dual amplification.
Availability
LT1884AIN8#PBF is available at Aetrix Electronics and suitable for thermocouple amplification, bridge transducer conditioning, and battery-powered instrumentation requiring stable component supply across industrial temperature ranges and multi-year production cycles.
Supply support for LT1884AIN8#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 its legacy of high-performance analog ICs, with design centers focused on precision signal conditioning, power management, and data conversion.
The LT1884 series belongs to Linear Technology's precision op amp product line, engineered specifically for applications demanding ultralow input bias current, rail-to-rail output, and tight DC specifications in harsh thermal environments.
FAQ
What is the maximum operating supply voltage for LT1884AIN8#PBF?
The LT1884AIN8#PBF supports a total supply voltage range of 2.7V to 36V, with full electrical specifications guaranteed from 5V to ±15V. Absolute maximum supply voltage is 40V (V+ to V–), beyond which device reliability is not assured. Operation at 36V requires thermal derating per the 130°C/W θJA rating in the N8 package.
Does LT1884AIN8#PBF support true rail-to-rail input operation?
No, the LT1884AIN8#PBF does not feature rail-to-rail input. Its input common-mode voltage range is specified as V– + 1.2V to V+ – 1.2V over temperature, meaning it cannot accept signals within 1.2V of either supply rail. However, its output swings rail-to-rail - within 40mV of V– and 220mV of V+ at 1mA load.
Can LT1884AIN8#PBF drive capacitive loads without oscillation?
Yes, the LT1884AIN8#PBF is stable driving up to 300pF capacitive loads in unity-gain configuration. Stability improves with higher closed-loop gain; for loads exceeding 300pF, a small series resistor (e.g., 10–50Ω) between amplifier output and capacitance restores phase margin without degrading DC accuracy.
What is the guaranteed offset voltage match between the two amplifiers in LT1884AIN8#PBF?
The LT1884AIN8#PBF guarantees offset voltage match ≤70µV over 0°C to 70°C and ≤125µV over –40°C to 85°C. This matching specification applies specifically to the difference between Amplifier A and Amplifier B, enabling high-accuracy differential amplification without external trimming components.
Is LT1884AIN8#PBF RoHS compliant and lead-free?
Yes, LT1884AIN8#PBF is RoHS compliant and features lead-free (Pb-free) termination with NiPdAu plating. The #PBF suffix explicitly denotes lead-free packaging per JEDEC J-STD-609, and the device meets EU RoHS Directive 2011/65/EU requirements for hazardous substance restrictions.
LT1884AIN8#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LT®
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 1V/µs
- Gain Bandwidth Product:
- 2.2 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 150 pA
- Voltage - Input Offset:
- 25 µV
- Current - Supply:
- 850µA (x2 Channels)
- Current - Output / Channel:
- 50 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
LT1884AIN8#PBF FAQ
1.How can I place an order for LT1884AIN8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1884AIN8#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 LT1884AIN8#PBF reliable?
The price and inventory of LT1884AIN8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1884AIN8#PBF is usually 5 days.
3.What payment methods are accepted for LT1884AIN8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1884AIN8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1884AIN8#PBF?
LT1884AIN8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1884AIN8#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 LT1884AIN8#PBF?
For technical support, including LT1884AIN8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1884AIN8#PBF requirements.
6.How does Aetrix verify that LT1884AIN8#PBF is sourced from the original manufacturer or authorized distributors?
All LT1884AIN8#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 LT1884AIN8#PBF meets industry standards.
7.What is the process for return or replacement of LT1884AIN8#PBF?
All LT1884AIN8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1884AIN8#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 LT1884AIN8#PBF part is unused and in its original packaging.
Return procedure for LT1884AIN8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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