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Analog Devices Inc. LT1114IS#PBF
- Part No.:
- LT1114IS#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT1114IS#PBF.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 16SO
- Quantity:
- Payment:
- Shipping:
Inventory:373
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Product details
Overview
LT1114IS#PBF 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 400 µA max supply current per amplifier at ±15 V - enabling high-accuracy signal conditioning in battery-powered thermocouple amplifiers and bridge sensor interfaces.
For engineers reviewing the LT1114IS#PBF datasheet, LT1114IS#PBF pinout, LT1114IS#PBF application, or LT1114IS#PBF equivalent, key selection criteria include guaranteed matching specifications (ΔVOS ≤ 100 µV), operation down to ±1.0 V supplies, and SO-16 narrow-body package compatibility with space-constrained industrial sensor modules.
Technical Context
The LT1114IS#PBF integrates four independent precision op amps on a single die with matched input transistor pairs, enabling consistent offset, drift, and CMRR performance across channels. Its proprietary super-beta input stage achieves sub-300 pA bias current while maintaining 120 dB minimum CMRR and 116 dB PSRR over ±1.0 V to ±20 V supply range.
It supports dual-supply operation from ±1.0 V minimum, with full specification guarantee at ±1.0 V - critical for two-AA-cell systems. Matching parameters (ΔVOS, ΔIB+, ΔCMRR) are explicitly tested and guaranteed between amplifier pairs A/D and B/C, directly supporting three-op-amp instrumentation amplifier topologies without external trimming.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 75 µV max (low-cost grade, SO package) - enables <10 µV system offset in matched configurations |
| Input Bias Current | ±250 pA max - preserves integrity of high-impedance pH, photodiode, and piezoelectric sensors |
| Supply Current per Amp | 400 µA max at ±15 V - allows four-channel precision amplification on <2 mA total supply |
| CMRR | 120 dB min - rejects common-mode noise in bridge and thermocouple circuits up to 100 Hz |
| Gain-Bandwidth Product | 450 kHz min - supports stable DC-coupled gain ≥1000 in low-frequency active filters |
| Offset Voltage Match | 100 µV max (ΔVOS) - reduces output error to <35 µV in three-op-amp instrumentation amplifiers |
| Operating Temp Range | –40°C to +85°C - qualified for industrial sensor nodes and portable medical devices |
Pinout & Package
S Package: 16-lead plastic small-outline (narrow, 0.150-inch width), RoHS-compliant, JEDEC MS-013AC compliant. Thermal resistance θJA = 110°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives low-impedance loads up to ±13 V swing into 10 kΩ |
| 2 | –IN A | Inverting input of Amp A - high-impedance node for feedback networks |
| 3 | +IN A | Noninverting input of Amp A - accepts signals within ±13.5 V of rails |
| 4 | V+ | Positive supply rail - accepts +1.0 V to +20 V relative to V– |
| 5 | +IN B | Noninverting input of Amp B - electrically isolated; no crosstalk from adjacent pins |
| 6 | –IN B | Inverting input of Amp B - matched to –IN A for differential pair use |
| 7 | OUT B | Amplifier B output - identical AC/DC performance to OUT A |
| 8 | NC | No connect - internal die pad; must remain unconnected |
| 9 | OUT D | Amplifier D output - fourth channel; pin-compatible with OUT A/B/C |
| 10 | –IN D | Inverting input of Amp D - matched to –IN A for quad-level consistency |
| 11 | +IN D | Noninverting input of Amp D - symmetric layout ensures uniform parasitic capacitance |
| 12 | V– | Negative supply rail - accepts –20 V to –1.0 V relative to V+ |
| 13 | +IN C | Noninverting input of Amp C - adjacent to V– for balanced AC grounding |
| 14 | –IN C | Inverting input of Amp C - matched to –IN A/B/D for multi-channel calibration |
| 15 | OUT C | Amplifier C output - fully specified; supports independent channel use |
| 16 | NC | No connect - internal die pad; must remain unconnected |
Key Features
| Feature | Design Value |
|---|---|
| Picoampere input bias | Enables direct interfacing with >1 GΩ source impedances without guard rings or bootstrapping |
| Guaranteed matching specs | ΔVOS ≤ 100 µV and ΔCMRR ≥ 113 dB ensure <0.01% gain error in 3-op-amp IN-AMPs |
| ±1.0 V minimum supply | Operates from two nearly depleted AA cells (≈±1.3 V), extending battery life in portable sensors |
| SO-16 narrow-body package | Occupies 55% less PCB area than wide SO-16 competitors - critical for compact IoT sensor nodes |
| Input overvoltage tolerance | Clips cleanly without phase reversal when input exceeds common-mode range by ≤800 mV |
Applications
| Thermocouple Amplifier | Bridge Sensor Interface |
|---|---|
Use Scenario: Amplifying µV-level Seebeck voltages from K-type thermocouples in HVAC control panels. IC Role / Device Role / Timing Role: Primary signal-conditioning stage with cold-junction compensation reference buffering. Use Value: 75 µV max VOS and 0.5 µV/°C max drift limit temperature measurement error to <0.3°C over 0°C–85°C. | Use Scenario: Reading strain in load cells with 350 Ω Wheatstone bridges in industrial weighing systems. IC Role / Device Role / Timing Role: Instrumentation amplifier front-end using three LT1114IS#PBF amplifiers in standard topology. Use Value: Guaranteed ΔVOS ≤ 100 µV ensures <15 µV output offset - enabling 24-bit ADC utilization without software calibration. |
| Low-Frequency Active Filter | Battery-Powered Photoamplifier |
Use Scenario: 0.1–10 Hz anti-aliasing filter for EEG signal acquisition in portable neurodiagnostic devices. IC Role / Device Role / Timing Role: Dual-amplifier Sallen-Key topology with precise pole placement. Use Value: 450 kHz GBW and 0.3 µVP-P 0.1–10 Hz noise support <120 dB SNR at 10 Hz with 100x gain. | Use Scenario: Converting pA-level photocurrent from UV photodiodes in handheld environmental monitors. IC Role / Device Role / Timing Role: Transimpedance amplifier with guarded input and low-noise feedback network. Use Value: 250 pA max IB and 2.2 pAP-P 0.1–10 Hz noise preserve signal fidelity below 100 pA input currents. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OP497GPZ | Higher VOS (150 µV max), higher supply current (500 µA/amp), wider SO-16 package | Less suitable for ultra-low-power battery designs; better for high-precision lab equipment | Choose OP497GPZ only if higher CMRR (130 dB) and lower noise density (11 nV/√Hz) outweigh power and size penalties |
| AD8628ARZ-REEL7 | Zero-drift architecture, 1 µV max VOS, but 1.2 mA supply current and no guaranteed matching specs | Superior DC accuracy but unsuitable for matched multi-amp circuits like IN-AMPs | Choose AD8628ARZ-REEL7 for single-channel DC-critical apps; avoid where amplifier matching is required |
Compared with OP497GPZ and AD8628ARZ-REEL7, the LT1114IS#PBF uniquely balances ultra-low bias current, guaranteed inter-amplifier matching, and sub-400 µA/amp consumption - making it the only option qualified for battery-powered, multi-channel precision sensor front-ends requiring <100 µV matching.
Availability
LT1114IS#PBF is available at Aetrix Electronics and suitable for industrial sensor nodes, portable medical diagnostics, and battery-powered test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LT1114IS#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 product support, manufacturing, and qualification for legacy Linear precision analog ICs.
The LT1112/LT1114 family was designed specifically for picoampere-input, low-voltage instrumentation - targeting thermocouple, bridge, and photo-current amplification where matching, power, and DC precision are co-critical.
FAQ
What is the guaranteed input offset voltage specification for LT1114IS#PBF?
The LT1114IS#PBF has a guaranteed maximum input offset voltage of 75 µV in the low-cost grade (including surface-mount packages), measured at TA = 25°C and VS = ±15 V. This value applies across the full operating temperature range of –40°C to +85°C per the datasheet's "I" grade specification.
Does LT1114IS#PBF support operation from ±1.0 V supplies?
Yes, the LT1114IS#PBF is fully specified and guaranteed to meet all key parameters - including offset voltage, supply current, and CMRR - when operated from ±1.0 V supplies. This enables direct use with two nearly discharged AA batteries (≈±1.3 V) in portable instrumentation.
How is amplifier matching guaranteed in LT1114IS#PBF?
Matching is guaranteed between amplifier pairs A/D and B/C for parameters including offset voltage (ΔVOS ≤ 100 µV), noninverting bias current (ΔIB+ ≤ 500 pA), and CMRR (ΔCMRR ≥ 113 dB). These values are tested and specified in the electrical characteristics table for the "I" grade, ensuring predictable performance in three-op-amp instrumentation amplifiers.
What package type does LT1114IS#PBF use, and is it pin-compatible with other LT1114 variants?
The LT1114IS#PBF uses the narrow 16-lead plastic SO (S package), which is pin-compatible with all other LT1114 variants in the same package - including LT1114CN, LT1114ACN, and LT1114S. Its pinout matches JEDEC MS-013AC and occupies 55% less area than wide-body SO-16 alternatives.
Can LT1114IS#PBF be used in single-supply configurations?
While optimized for dual-supply operation, the LT1114IS#PBF can be used in single-supply mode with appropriate level-shifting. Its input common-mode range extends to within 800 mV of either rail, and output swings to within 1.0 V of each rail under 10 kΩ load - enabling rail-to-rail input/output operation when biased at mid-supply with proper decoupling.
LT1114IS#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LT®
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SO
LT1114IS#PBF FAQ
1.How can I place an order for LT1114IS#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1114IS#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 LT1114IS#PBF reliable?
The price and inventory of LT1114IS#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1114IS#PBF is usually 5 days.
3.What payment methods are accepted for LT1114IS#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1114IS#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1114IS#PBF?
LT1114IS#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1114IS#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 LT1114IS#PBF?
For technical support, including LT1114IS#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1114IS#PBF requirements.
6.How does Aetrix verify that LT1114IS#PBF is sourced from the original manufacturer or authorized distributors?
All LT1114IS#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 LT1114IS#PBF meets industry standards.
7.What is the process for return or replacement of LT1114IS#PBF?
All LT1114IS#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1114IS#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 LT1114IS#PBF part is unused and in its original packaging.
Return procedure for LT1114IS#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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