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Analog Devices Inc. LT1114S#TRPBF
- Part No.:
- LT1114S#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT1114S#TRPBF.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 16SO
- Quantity:
- Payment:
- Shipping:
Inventory:5,189
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Product details
Overview
LT1114S#TRPBF from Analog Devices (formerly Linear Technology) is a quad precision operational amplifier optimized for low-power, picoampere-input instrumentation applications. It delivers 75 µV max input offset voltage, 250 pA max input bias current, and 320 µA per amplifier supply current at ±1.0 V supplies - enabling operation from two nearly discharged AA cells. It is widely used in thermocouple amplifiers, bridge sensor interfaces, and battery-powered precision measurement systems.
For engineers reviewing the LT1114S#TRPBF datasheet, LT1114S#TRPBF pinout, LT1114S#TRPBF application, or LT1114S#TRPBF equivalent, key selection criteria include guaranteed matching specifications (ΔVOS ≤ 100 µV), SO-16 narrow package footprint, ±1 V minimum supply capability, and validated performance across –40°C to +85°C.
Technical Context
The LT1114S#TRPBF integrates four independent precision op amps on a single die with matched input transistor pairs, enabling high-accuracy differential signal conditioning. Its architecture supports full rail-to-rail common-mode input range (±13.5 V at ±15 V supplies) and guarantees matching parameters - including offset voltage match (ΔVOS), noninverting bias current match (ΔIB⁺), and CMRR/PSRR match - critical for three-op-amp instrumentation amplifier topologies.
It operates down to ±1.0 V total supply (±0.5 V per rail), with supply current tightly specified at 320–420 µA per amplifier under those conditions. Input protection diodes enable robustness against overvoltage transients, while independent biasing ensures negligible crosstalk between channels during overdrive events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 75 µV max (low-cost grade, SO-16 package) - enables sub-100 µV system-level offset in sensor front-ends without trimming |
| Input Bias Current | ±250 pA max - preserves high-impedance source integrity in photodiode and piezoelectric sensor interfaces |
| Supply Current per Amp | 320 µA max at ±1.0 V - allows dual-cell alkaline operation with >1-year battery life in low-duty-cycle data loggers |
| Offset Voltage Match | 100 µV max (ΔVOS) - reduces residual error in two- or three-op-amp instrumentation amplifiers to <35 µV typical |
| CMRR | 120 dB min - rejects common-mode noise from 50/60 Hz mains and EMI in industrial sensor nodes |
| Gain-Bandwidth Product | 450 kHz min - supports stable closed-loop gain ≥100 up to ~4.5 kHz for anti-alias filtering and signal conditioning |
| Operating Temp Range | –40°C to +85°C - qualified for commercial and industrial environments without derating |
Pinout & Package
LT1114S#TRPBF is housed in a 16-lead narrow plastic SOIC (S package), 0.150-inch body width, with standard quad op amp pinout and no internal connections on pins 9 and 16 (NC). Thermal resistance θJA = 110°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives feedback networks or ADC input buffers with ±13 V swing into 10 kΩ |
| 2 | –IN A | Inverting input of Amp A - high-impedance node (800 GΩ common-mode RIN) for precision feedback |
| 3 | +IN A | Noninverting input of Amp A - matched to +IN B/C/D for common-mode rejection in multi-amp circuits |
| 4 | V+ | Positive supply rail - accepts +0.5 V to +20 V; must be ≥ |V–| for proper operation |
| 5 | +IN B | Noninverting input of Amp B - adjacent to V+ pin, minimizing capacitive mismatch vs. +IN A |
| 6 | –IN B | Inverting input of Amp B - electrically isolated from other amps; no crosstalk during slewing |
| 7 | OUT B | Amplifier B output - independently buffered; supports separate gain stages or reference buffering |
| 8 | NC | No connect - not bonded; no internal connection or thermal path |
| 9 | NC | No connect - not bonded; maintains symmetry for PCB layout and thermal uniformity |
| 10 | OUT D | Amplifier D output - used for active filtering, reference buffering, or auxiliary signal paths |
| 11 | –IN D | Inverting input of Amp D - matches –IN A/B/C for consistent loop compensation across all channels |
| 12 | +IN D | Noninverting input of Amp D - paired with +IN C for matched instrumentation amplifier configurations |
| 13 | V– | Negative supply rail - accepts –20 V to –0.5 V; symmetrical with V+ for bipolar operation |
| 14 | +IN C | Noninverting input of Amp C - positioned adjacent to V–, ensuring balanced parasitic capacitance vs. +IN D |
| 15 | –IN C | Inverting input of Amp C - supports differential input stage in three-op-amp IA topologies |
| 16 | OUT C | Amplifier C output - typically used as gain-setting or common-mode feedback node in IAs |
Key Features
| Feature | Design Value |
|---|---|
| Picoampere input bias current | Enables direct interfacing with high-Z sources (e.g., pH electrodes, piezoresistive bridges) without guard rings or T-networks |
| Guaranteed matching specs | ΔVOS ≤ 100 µV and ΔIB⁺ ≤ 450 pA ensure <0.01% gain error drift in 3-op-amp instrumentation amplifiers |
| ±1.0 V minimum supply | Supports true single-supply or ultra-low-voltage bipolar operation - extends battery life in portable medical and environmental sensors |
| SO-16 narrow footprint | Occupies 40% less PCB area than wide SO-16 alternatives - critical for space-constrained IoT edge nodes |
| Input overvoltage tolerance | Withstands inputs exceeding V+/V– by one diode drop without phase reversal - improves reliability in noisy industrial environments |
Applications
| Thermocouple Amplifier | Bridge Sensor Interface |
|---|---|
Use Scenario: Amplifying µV-level Seebeck voltages from K-type thermocouples in HVAC control panels with ambient temperature ranging from –25°C to +70°C. IC Role / Device Role / Timing Role: LT1114S#TRPBF serves as the first-stage low-noise, low-drift instrumentation amplifier core - two amps form the input differential pair, one provides gain, and the fourth buffers the reference. Use Value: 0.3 µVP-P 0.1–10 Hz noise and 0.5 µV/°C offset drift ensure ±0.5°C accuracy over full range without calibration. | Use Scenario: Signal conditioning for 350 Ω strain-gauge load cells in industrial weighing systems operating continuously at 25°C ambient. IC Role / Device Role / Timing Role: LT1114S#TRPBF implements a three-op-amp IA topology where matched offsets and bias currents minimize zero-point drift under mechanical stress and thermal cycling. Use Value: Guaranteed ΔVOS ≤ 100 µV and ΔIB⁺ ≤ 450 pA reduce thermal zero drift to <2 µV/°C - eliminating need for active temperature compensation circuitry. |
| Battery-Powered Data Logger | Low-Frequency Active Filter |
Use Scenario: Multi-channel environmental sensor node logging temperature, humidity, and CO₂ using coin-cell or AA batteries with 5-year field deployment target. IC Role / Device Role / Timing Role: LT1114S#TRPBF powers all analog front-end stages - sensor biasing, amplification, and anti-alias filtering - operating from ±1.2 V supplies derived from boost converters. Use Value: 320 µA per amplifier supply current at ±1.0 V enables >2 years of operation on two AA cells at 1-sample-per-minute duty cycle. | Use Scenario: 1 Hz–10 Hz bandpass filtering for seismic vibration monitoring in structural health assessment equipment. IC Role / Device Role / Timing Role: LT1114S#TRPBF configures as dual second-order Sallen-Key stages (A+B for LPF, C+D for HPF), leveraging matched GBW and VOS for passband flatness. Use Value: 450 kHz GBW and 0.15 µV/°C typical offset drift maintain <0.05 dB gain flatness and <0.2° phase error across 0.5–5 Hz band. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8628ARZ-REEL7 | Zero-drift chopper architecture; 1 µV max VOS but higher 1/f noise (0.5 µVP-P); 1 mA supply current | Better DC accuracy but unsuitable for low-noise AC-coupled sensor front-ends due to switching artifacts | Select AD8628ARZ-REEL7 only when ultra-low VOS drift (<0.005 µV/°C) outweighs noise and EMI sensitivity |
| OP4177ARUZ | Lower noise (8 nV/√Hz), higher supply current (500 µA), wider temp range (–40°C to +125°C), SO-16 package | Preferred for high-precision industrial PLC analog I/O modules requiring extended temperature qualification | Choose OP4177ARUZ when system-level noise budget is tighter than power budget and extended temp rating is mandatory |
Compared with AD8628ARZ-REEL7 and OP4177ARUZ, the LT1114S#TRPBF offers the optimal balance of ultra-low input bias current (250 pA), sub-100 µV offset, and microamp-level quiescent power - making it uniquely suited for high-impedance, battery-constrained instrumentation where chopper noise or excess supply current degrade system performance.
Availability
LT1114S#TRPBF is available at Aetrix Electronics and suitable for thermocouple amplifiers, bridge sensor interfaces, and battery-powered data loggers requiring stable component supply, long-lifecycle support, and traceable sourcing from authorized channels.
Supply support for LT1114S#TRPBF 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. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, formed through the acquisition of Linear Technology in 2017.
The LT1114S#TRPBF belongs to Linear's legacy precision op amp product line, designed specifically for low-power, high-accuracy instrumentation applications where input bias current, offset matching, and supply voltage flexibility are critical.
FAQ
What is the minimum supply voltage required for LT1114S#TRPBF to meet all guaranteed specifications?
The LT1114S#TRPBF is fully specified and guaranteed over its entire performance range at ±1.0 V supplies (i.e., +1.0 V and –1.0 V rails). This includes offset voltage, supply current, CMRR, and PSRR - enabling reliable operation from two nearly depleted AA cells. Operation below ±1.0 V is not characterized or guaranteed.
Does LT1114S#TRPBF support rail-to-rail input or output operation?
The LT1114S#TRPBF does not provide rail-to-rail input or output swing. Its input common-mode range extends to ±13.5 V with ±15 V supplies (within 1.5 V of rails), and output swing reaches ±13.0 V into 10 kΩ (within 2 V of rails). At ±1.0 V supplies, output swing is ±0.7 V into 10 kΩ - sufficient for low-voltage sensor buffering but not true rail-to-rail.
Is LT1114S#TRPBF pin-compatible with industry-standard quad op amp packages?
Yes - the LT1114S#TRPBF uses the standard 16-pin SOIC narrow (S package) pinout defined for quad op amps. It is pin-compatible with OP-400, OP-497, and AD704, and directly replaces them with improved price/performance. Pins 8 and 16 are NC; no PCB redesign is needed when upgrading from these legacy parts.
How does LT1114S#TRPBF handle input overvoltage conditions beyond the supply rails?
The LT1114S#TRPBF features back-to-back input protection diodes. When input exceeds V+ or falls below V– by more than ~0.6 V, current flows through these diodes. Unlike many op amps, it avoids phase reversal - instead clipping cleanly. However, external series resistance is recommended to limit current and prevent damage or slow recovery.
What is the guaranteed offset voltage matching specification for LT1114S#TRPBF, and how is it measured?
The LT1114S#TRPBF guarantees offset voltage match (ΔVOS) ≤ 100 µV across amplifier pairs A/D and B/C. This is the absolute difference between the input offset voltages of matched amplifier pairs, measured at TA = 25°C with VS = ±15 V. It is a key enabler for low-error three-op-amp instrumentation amplifiers and tracking references.
LT1114S#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LT®
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- -
- Slew Rate:
- 0.3V/µs
- Gain Bandwidth Product:
- 750 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 70 pA
- Voltage - Input Offset:
- 20 µV
- Current - Supply:
- 350µA (x4 Channels)
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 2 V
- Voltage - Supply Span (Max):
- 40 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SO
LT1114S#TRPBF FAQ
1.How can I place an order for LT1114S#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1114S#TRPBF 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 LT1114S#TRPBF reliable?
The price and inventory of LT1114S#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1114S#TRPBF is usually 5 days.
3.What payment methods are accepted for LT1114S#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1114S#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1114S#TRPBF?
LT1114S#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1114S#TRPBF 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 LT1114S#TRPBF?
For technical support, including LT1114S#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1114S#TRPBF requirements.
6.How does Aetrix verify that LT1114S#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT1114S#TRPBF 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 LT1114S#TRPBF meets industry standards.
7.What is the process for return or replacement of LT1114S#TRPBF?
All LT1114S#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1114S#TRPBF, 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 LT1114S#TRPBF part is unused and in its original packaging.
Return procedure for LT1114S#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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