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Analog Devices Inc. LT1114ACN#PBF
- Part No.:
- LT1114ACN#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
LT1114ACN#PBF.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,013
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Product details
Overview
LT1114ACN#PBF from Analog Devices (acquired 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, 0.5 µV/°C max offset drift, 400 µA max supply current per amplifier, and guaranteed matching specs - enabling high-accuracy two/three-op-amp instrumentation amplifiers in battery-powered systems.
For engineers reviewing the LT1114ACN#PBF datasheet, LT1114ACN#PBF pinout, LT1114ACN#PBF application, or LT1114ACN#PBF equivalent, key selection criteria include its ±1.0 V minimum supply capability, matched offset voltage (≤100 µV), ultra-low input current, and compatibility with thermocouple/bridge amplifier topologies requiring stable DC performance over –40°C to +85°C.
Technical Context
The LT1114ACN#PBF employs a bipolar input stage with back-to-back diode protection and independent biasing per amplifier, ensuring negligible crosstalk between channels. Its architecture supports operation down to ±1.0 V supplies while maintaining 120 dB min CMRR and 114 dB min PSRR across the full temperature range.
Matched parameters - including ∆VOS ≤100 µV, ∆IB+ ≤450 pA, and ∆CMRR ≥113 dB - are guaranteed for amplifier pairs A/D and B/C, directly supporting precision three-op-amp instrumentation amplifier designs where error cancellation relies on inter-amplifier tracking rather than absolute specs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 75 µV max - enables sub-100 µV system-level offset in matched configurations without trimming. |
| Input Bias Current | ±250 pA max - preserves signal integrity in high-impedance sensor interfaces like photodiodes or pH electrodes. |
| Supply Current per Amp | 400 µA max - allows dual AA cell operation down to ±1.3 V with stable performance. |
| Offset Voltage Drift | 0.5 µV/°C max - ensures <1 µV total drift over 0–70°C ambient, critical for unattended measurement systems. |
| Common Mode Rejection | 120 dB min - rejects >10⁶× common-mode interference in bridge-based strain gauge circuits. |
| Gain-Bandwidth Product | 450 kHz min - supports stable closed-loop gain up to 1000 at DC–100 Hz for low-frequency active filters. |
| Operating Temperature | –40°C to +85°C - qualified for industrial and automotive cabin environments without derating. |
Pinout & Package
N8 package: 14-lead plastic DIP, 0.300-inch width, JEDEC MS-001 compliant. RoHS-compliant lead finish, 150°C max junction temperature, 150°C/W thermal resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT A) | Amplifier A output | Drives feedback network; capable of ±13.0 V swing into 10 kΩ load. |
| 2 (–IN A) | Amplifier A inverting input | High-impedance node; protected by back-to-back diodes to V+ and V–. |
| 3 (+IN A) | Amplifier A noninverting input | Accepts signals within ±13.5 V of supplies; 800 GΩ common-mode input resistance. |
| 4 (V–) | Negative supply rail | Shared return for all four amplifiers; must be decoupled locally. |
| 5 (+IN B) | Amplifier B noninverting input | Independent biasing ensures no crosstalk with A-channel performance. |
| 6 (–IN B) | Amplifier B inverting input | Matches A-channel input characteristics for differential pair configurations. |
| 7 (OUT B) | Amplifier B output | Electrically isolated from OUT A; supports independent gain staging. |
| 8 (OUT D) | Amplifier D output | Used in three-op-amp IA topology as reference buffer output. |
| 9 (–IN D) | Amplifier D inverting input | Configured as unity-gain buffer input in standard instrumentation amplifier layouts. |
| 10 (+IN D) | Amplifier D noninverting input | Connected to reference node; benefits from guaranteed matching to A/B inputs. |
| 11 (V+) | Positive supply rail | Shared power for all amplifiers; requires 0.1 µF ceramic bypass near pin. |
| 12 (+IN C) | Amplifier C noninverting input | Available for auxiliary functions such as level-shifting or reference generation. |
| 13 (–IN C) | Amplifier C inverting input | Supports matched differential sensing when used with amplifier D. |
| 14 (OUT C) | Amplifier C output | Provides third gain stage output in extended instrumentation amplifier designs. |
Key Features
| Feature | Design Value |
|---|---|
| Picoampere input bias | Enables direct interfacing with high-Z sensors (e.g., piezoelectric accelerometers) without guard rings or leakage compensation. |
| Guaranteed matching specs | ∆VOS ≤100 µV and ∆IB+ ≤450 pA allow predictable error cancellation in three-op-amp IAs without calibration. |
| ±1.0 V minimum supply | Permits operation from two nearly depleted AA cells (≈±1.3 V), extending battery life in portable data loggers. |
| Low 0.1–10 Hz noise | 0.3 µVP-P voltage noise and 2.2 pAP-P current noise minimize drift in DC-coupled thermocouple amplifiers. |
| Independent amplifier biasing | Eliminates channel-to-channel interaction during overdrive recovery, preserving accuracy in multiplexed sensor systems. |
Applications
| Thermocouple Amplifier | Bridge Sensor Interface |
|---|---|
Use Scenario: Amplifying µV-level Seebeck voltages from Type-K thermocouples in industrial process monitoring. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with cold-junction compensation reference buffering. Use Value: 75 µV max VOS and 0.5 µV/°C drift ensure <±2°C measurement uncertainty over 0–100°C span without recalibration. | Use Scenario: Signal conditioning for 350 Ω strain gauge bridges in structural health monitoring nodes. IC Role / Device Role / Timing Role: Instrumentation amplifier front-end using matched LT1114ACN#PBF channels A, B, and D. Use Value: Guaranteed ∆VOS ≤100 µV enables <0.05% linearity error in 100 mV/V bridge outputs without trimming resistors. |
| Photo Current Amplifier | Battery-Powered Data Logger |
Use Scenario: Converting pA-level photocurrent from UV photodiodes in environmental light-sensing modules. IC Role / Device Role / Timing Role: Transimpedance amplifier with guarded input and low-noise feedback path. Use Value: 250 pA max IB and 0.3 µVP-P 0.1–10 Hz noise preserve SNR in 1–100 pA signal ranges. | Use Scenario: Multi-channel analog front-end in handheld water quality meters powered by two AA cells. IC Role / Device Role / Timing Role: Simultaneous amplification and filtering of pH, ORP, and conductivity sensor outputs. Use Value: 400 µA per amplifier and ±1.0 V min supply enable >12-month battery life at 1-sample-per-minute duty cycle. |
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 |
|---|---|---|---|
| LT1114CN#PBF | Same die, wider initial VOS spec (100 µV max), same 250 pA IB, identical pinout and package. | Qualified for 0°C to 70°C only; not tested across –40°C to +85°C range. | Select LT1114ACN#PBF for industrial deployments requiring full temperature-range validation. |
| AD8628ARZ | Zero-drift chopper architecture; 1 µV max VOS, 0.005 µV/°C drift, but 1.2 mA supply current and 5.5 V min supply. | Superior DC accuracy but incompatible with single-cell or low-voltage battery operation. | Choose AD8628ARZ only when ultra-low drift dominates over power and supply constraints. |
Compared with LT1114CN#PBF, LT1114ACN#PBF provides verified –40°C to +85°C performance assurance; compared with AD8628ARZ, it trades chopper-level drift for 3× lower supply current and ±1.0 V operation - making it optimal for long-life, wide-temperature, low-voltage instrumentation.
Availability
LT1114ACN#PBF is available at Aetrix Electronics and suitable for thermocouple amplifiers, bridge sensor interfaces, photo current amplifiers, battery-powered data loggers, and precision reference buffers requiring stable component supply across industrial temperature ranges.
Supply support for LT1114ACN#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, qualification, and documentation for legacy Linear parts including the LT1114 series.
The LT1114 product line was designed specifically for precision, low-power, multi-amplifier instrumentation applications - emphasizing matched specifications, picoampere input performance, and operation from minimal supply voltages.
FAQ
What is the maximum input offset voltage specification for LT1114ACN#PBF?
The LT1114ACN#PBF has a maximum input offset voltage of 75 µV at TA = 25°C, and this limit is guaranteed over the full –40°C to +85°C operating temperature range. This value applies to the "AC" grade, distinguishing it from the "C" grade (100 µV max) which is only specified from 0°C to 70°C. The LT1114ACN#PBF's tighter VOS spec directly enables higher-accuracy instrumentation amplifier designs without external trimming.
Does LT1114ACN#PBF support operation from ±1.0 V supplies?
Yes, LT1114ACN#PBF is fully specified and guaranteed for operation with ±1.0 V supplies, including key parameters such as input offset voltage, supply current, and CMRR. This capability allows direct use with two nearly discharged AA cells (≈±1.3 V), and the device maintains 320 µA typical supply current per amplifier at ±1.0 V - making LT1114ACN#PBF ideal for ultra-low-power portable instrumentation.
What package type is used for LT1114ACN#PBF?
LT1114ACN#PBF uses the N package: a 14-lead plastic DIP (dual in-line package) with 0.300-inch body width, JEDEC MS-001 compliant. It is RoHS-compliant, features matte tin lead finish, and has a maximum junction temperature of 150°C and thermal resistance θJA of 150°C/W. This through-hole package supports manual prototyping and wave soldering in industrial control PCBs.
How does LT1114ACN#PBF achieve matched performance between amplifiers?
LT1114ACN#PBF guarantees matching specifications between amplifier pairs A/D and B/C - including offset voltage match (∆VOS ≤100 µV), noninverting bias current match (∆IB+ ≤450 pA), and common-mode rejection match (∆CMRR ≥113 dB). These are measured on the same die and tested per unit, enabling predictable error cancellation in three-op-amp instrumentation amplifiers without individual amplifier characterization.
Is LT1114ACN#PBF pin-compatible with older precision op amps?
Yes, LT1114ACN#PBF is pin-compatible with industry-standard quad precision op amps including OP-400, OP-497, and AD704 in the 14-pin DIP package. Its pinout matches the standard configuration for quad op amps, allowing drop-in replacement in existing designs - with improvements in offset voltage (75 µV vs. 100–200 µV), input bias current (250 pA vs. 500–1000 pA), and low-voltage operation (±1.0 V vs. ±2.0 V min).
LT1114ACN#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LT®
- Package/Case:
- 14-DIP (0.300", 7.62mm)
- 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:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 14-PDIP
LT1114ACN#PBF FAQ
1.How can I place an order for LT1114ACN#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1114ACN#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 LT1114ACN#PBF reliable?
The price and inventory of LT1114ACN#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1114ACN#PBF is usually 5 days.
3.What payment methods are accepted for LT1114ACN#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1114ACN#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1114ACN#PBF?
LT1114ACN#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1114ACN#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 LT1114ACN#PBF?
For technical support, including LT1114ACN#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1114ACN#PBF requirements.
6.How does Aetrix verify that LT1114ACN#PBF is sourced from the original manufacturer or authorized distributors?
All LT1114ACN#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 LT1114ACN#PBF meets industry standards.
7.What is the process for return or replacement of LT1114ACN#PBF?
All LT1114ACN#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1114ACN#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 LT1114ACN#PBF part is unused and in its original packaging.
Return procedure for LT1114ACN#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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