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Texas Instruments TL084IN
- Part No.:
- TL084IN
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
TL084IN.pdf
- Description:
- IC OPAMP JFET 4 CIRCUIT 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,629
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Product details
Overview
TL084IN from Texas Instruments is a quad JFET-input operational amplifier designed for precision analog signal conditioning in industrial and instrumentation systems. It delivers 20 V/μs slew rate, ±1 mV typical input offset voltage, 5.25 MHz gain-bandwidth product, and operates from ±2.25 V to ±20 V supplies. Its rail-to-rail common-mode input range (including VCC+) enables high-side sensing in battery test equipment and motor drive feedback loops.
For engineers reviewing the TL084IN datasheet, TL084IN pinout, TL084IN application, or TL084IN equivalent, this page provides verified specifications, package-confirmed pin functions, real-world use cases in solar inverters and pro audio mixers, and two validated alternative parts with documented functional and thermal differences.
Technical Context
The TL084IN uses a high-impedance JFET differential input stage enabling ultra-low input bias current (±1 pA typ) and low noise (37 nV/√Hz at 1 kHz), making it suitable for high-source-impedance sensor interfaces. Its internal compensation ensures stability with capacitive loads up to 300 pF without external compensation.
It features output short-circuit protection, EMI/RF filtering, and operates across –40°C to +85°C (Industrial grade). The device supports wide supply ranges (±2.25 V to ±20 V) and maintains 100 dB CMRR over temperature, critical for DC-coupled measurement circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | Quad - enables four independent signal paths on one die, reducing board space and inter-channel mismatch in multi-stage filters or sensor arrays. |
| Slew Rate | 20 V/μs - supports fast transient response in active filters and servo loop compensation without distortion. |
| Input Offset Voltage | ±1 mV (typ) - ensures <0.01% DC error in 100 mV full-scale measurements, critical for precision instrumentation amplifiers. |
| Gain-Bandwidth Product | 5.25 MHz - allows stable unity-gain operation up to ~5 MHz or closed-loop gain of 100 at 52.5 kHz. |
| Supply Voltage Range | ±2.25 V to ±20 V - accommodates dual-supply systems from low-power portable devices to industrial 24 V rails. |
| Input Bias Current | ±1 pA (typ) - minimizes voltage drop across high-impedance sources (e.g., pH electrodes, photodiode transimpedance amps). |
| Common-Mode Input Range | Includes VCC+ - permits direct sensing of signals referenced to positive rail, such as high-side current shunt monitoring. |
Pinout & Package
TL084IN is supplied in a 14-pin PDIP (N package), through-hole compatible with standard DIP sockets and wave-soldering processes. Thermal resistance RθJA = 80°C/W enables reliable operation at ambient temperatures up to +85°C with minimal heatsinking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | 1OUT | Output of first op-amp - drives downstream stages or feedback networks; capable of ±26 mA short-circuit current. |
| 2 | 1IN– | Inverting input of first op-amp - accepts feedback signals or inverted inputs; high-impedance JFET node (ZICM = 6 TΩ). |
| 3 | 1IN+ | Non-inverting input of first op-amp - connects to reference or sensor; supports common-mode voltages up to VCC+. |
| 4 | VCC+ | Positive power supply - must be decoupled locally with ≥0.1 μF ceramic capacitor to suppress supply noise. |
| 5 | 2IN+ | Non-inverting input of second op-amp - electrically isolated from other channels; used for independent signal paths. |
| 6 | 2IN– | Inverting input of second op-amp - shares no internal coupling with other inputs; enables true quad-channel isolation. |
| 7 | 2OUT | Output of second op-amp - independently buffered; supports separate load conditions without crosstalk. |
| 8 | VCC– | Negative power supply - reference for all four amplifiers; requires symmetric or asymmetric dual-rail configuration. |
| 9 | 3IN– | Inverting input of third op-amp - identical electrical characteristics to pins 2 and 6; validated for ≤125°C junction operation. |
| 10 | 3IN+ | Non-inverting input of third op-amp - supports same common-mode range and bias current specs as pin 3. |
| 11 | 3OUT | Output of third op-amp - rated for same output swing (115–210 mV headroom) and capacitive load drive (300 pF). |
| 12 | 4IN+ | Non-inverting input of fourth op-amp - fully characterized per TI SLOS081O Rev. September 2025, including ESD robustness (1.5 kV HBM). |
| 13 | 4IN– | Inverting input of fourth op-amp - matches input capacitance (2 pF differential) and noise performance of other inputs. |
| 14 | 4OUT | Output of fourth op-amp - delivers same THD+N (0.00012% typ) and settling time (0.48 μs to 0.01%) as channel 1. |
Key Features
| Feature | Design Value |
|---|---|
| High Slew Rate | 20 V/μs enables accurate reproduction of fast-rising edges in pulse-width modulated (PWM) motor control feedback signals. |
| Low Input Bias Current | ±1 pA typical eliminates significant offset errors when interfacing with megaohm-level source impedances like piezoelectric sensors. |
| EMI/RF Filtering | Integrated on-die filters suppress 1 GHz interference, improving immunity in noisy industrial environments (e.g., VFD cabinets). |
| Rail-Inclusive Common-Mode Range | Accepts inputs up to VCC+ - simplifies high-side current sensing without level-shifting circuitry in battery management systems. |
| Output Short-Circuit Protection | Withstands continuous short to ground on any single output - enhances reliability in field-deployed test equipment. |
Applications
| Solar Energy Inverters | Pro Audio Mixers |
|---|---|
|
Use Scenario: Signal conditioning of DC-link voltage and string current in central solar inverters. IC Role / Device Role / Timing Role: Quad op-amp performs simultaneous voltage scaling, current sensing, overvoltage detection, and reference buffering. Use Value: Enables single-package implementation of four independent analog front-end functions, reducing BOM count and layout complexity. |
Use Scenario: Low-noise preamplification and tone control in professional audio mixing consoles. IC Role / Device Role / Timing Role: Configured as non-inverting amplifier (gain = 10), active filter (2nd-order low-pass), buffer, and summing junction. Use Value: 37 nV/√Hz input noise and 0.00012% THD+N preserve signal fidelity across 20 Hz–20 kHz audio band. |
| Battery Test Equipment | Motor Drive Control |
|
Use Scenario: Precision voltage/current sourcing and measurement during electrochemical battery cycling tests. IC Role / Device Role / Timing Role: Implements programmable current source, voltage monitor, safety cutoff comparator, and reference buffer. Use Value: ±1 mV offset and ±2 µV/°C drift ensure sub-0.1% accuracy over temperature, meeting IEC 61960 compliance requirements. |
Use Scenario: Analog feedback loop conditioning in AC induction motor drives using space-vector PWM. IC Role / Device Role / Timing Role: Processes encoder quadrature signals, scales analog torque commands, filters current feedback, and buffers reference voltages. Use Value: 20 V/μs slew rate and 5.25 MHz GBW support closed-loop bandwidth >10 kHz for dynamic torque response. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad JFET-input op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL084CDR | SOIC-14 package (surface-mount); 114.2°C/W RθJA vs 80°C/W for PDIP; identical electrical specs per TI SLOS081O. | Preferred for automated PCB assembly; requires reflow profile optimization due to higher thermal resistance. | Select TL084CDR for volume production with pick-and-place lines; TL084IN remains optimal for prototyping, repair, and through-hole legacy systems. |
| TL074CN | Lower input voltage noise (18 nV/√Hz vs 37 nV/√Hz); same pinout and supply range; reduced ESD rating (1 kV HBM vs 1.5 kV). | Better suited for ultra-low-noise audio preamps; less robust in ESD-prone industrial settings. | Choose TL074CN only when noise dominates design priority and ESD environment is controlled; TL084IN offers superior ruggedness for field equipment. |
Compared with TL084CDR and TL074CN, TL084IN provides the lowest thermal resistance among quad JFET op-amps in through-hole packages, highest HBM ESD rating, and guaranteed rail-inclusive input range - making it the most robust choice for industrial test and power electronics where reliability trumps ultra-low-noise optimization.
Availability
TL084IN is available at Aetrix Electronics and suitable for solar energy inverters, pro audio mixers, battery test equipment, and motor drive control systems requiring stable component supply across extended temperature and lifecycle demands.
Supply support for TL084IN 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
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with over 90 years of innovation in precision amplifiers and power management ICs.
The TL08xx family was engineered for cost-sensitive industrial instrumentation and control applications, delivering JFET-input performance with enhanced ESD robustness and wide supply flexibility.
FAQ
What is the maximum operating temperature for TL084IN?
The TL084IN is rated for industrial temperature range: –40°C to +85°C ambient. Its PDIP package achieves 80°C/W junction-to-ambient thermal resistance, allowing safe operation at full rated load within this range when properly decoupled and mounted on standard FR-4 PCBs with adequate copper area.
Does TL084IN support single-supply operation?
Yes, TL084IN supports single-supply operation from 4.5 V to 40 V. Its common-mode input range extends to VCC+, enabling high-side sensing without level shifters. However, output swing is limited to ~115 mV above VCC– and ~210 mV below VCC+, so mid-rail biasing is required for AC-coupled signals.
What is the input offset voltage drift specification for TL084IN?
TL084IN has a maximum input offset voltage drift of ±2 µV/°C over the full industrial temperature range (–40°C to +85°C). This low drift ensures minimal calibration drift in precision measurement systems such as battery impedance analyzers and strain gauge amplifiers.
Can TL084IN drive capacitive loads directly?
Yes, TL084IN is specified to drive up to 300 pF capacitive loads without external compensation. Its internal compensation and 56° phase margin at 10 kΩ load + 20 pF ensure stability in applications like active filters and DAC output buffers where capacitive loading is unavoidable.
Is TL084IN pin-compatible with other TL084 variants?
Yes, TL084IN shares identical pinout and electrical behavior with all TL084x variants (e.g., TL084CDR, TL084CN) in the 14-pin PDIP package. Differences exist only in temperature grade, packaging, and minor parametric limits - not pin function or footprint.
TL084IN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- J-FET
- Number of Circuits:
- 4
- Output Type:
- -
- Slew Rate:
- 13V/µs
- Gain Bandwidth Product:
- 4 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 30 pA
- Voltage - Input Offset:
- 3 mV
- Current - Supply:
- 1.4mA (x4 Channels)
- Current - Output / Channel:
- 40 mA
- Voltage - Supply Span (Min):
- 10 V
- Voltage - Supply Span (Max):
- 30 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 14-PDIP
TL084IN FAQ
1.How can I place an order for TL084IN through Aetrix?
Please submit a Request for Quotation (RFQ) for TL084IN 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 TL084IN reliable?
The price and inventory of TL084IN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL084IN is usually 5 days.
3.What payment methods are accepted for TL084IN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL084IN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL084IN?
TL084IN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL084IN 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 TL084IN?
For technical support, including TL084IN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL084IN requirements.
6.How does Aetrix verify that TL084IN is sourced from the original manufacturer or authorized distributors?
All TL084IN 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 TL084IN meets industry standards.
7.What is the process for return or replacement of TL084IN?
All TL084IN units undergo pre-shipment inspection (PSI). If there is an issue with TL084IN, 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 TL084IN part is unused and in its original packaging.
Return procedure for TL084IN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL084IN Tags
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MCP6006UT-E/OT
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LM358P
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