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Texas Instruments TL084CNSR
- Part No.:
- TL084CNSR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
TL084CNSR.pdf
- Description:
- IC OPAMP JFET 4 CIRCUIT 14SO
- Quantity:
- Payment:
- Shipping:
Inventory:6,800
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Product details
Overview
TL084CNSR from Texas Instruments is a quad JFET-input operational amplifier designed for precision analog signal conditioning in industrial and audio systems. It delivers 5.25 MHz gain-bandwidth, 20 V/μs slew rate, ±15 V supply operation, 100 dB CMRR, and 0.003% THD+N at 1 kHz - enabling high-fidelity amplification in pro audio mixers and battery test equipment.
For engineers reviewing the TL084CNSR datasheet, TL084CNSR pinout, TL084CNSR application, or TL084CNSR equivalent, this page provides verified electrical specs, SOIC-14 package details, real-world use cases in solar inverters and motor drives, and two validated alternative parts with documented functional and thermal differences.
Technical Context
The TL084CNSR implements a high-slew-rate JFET input stage with matched P-channel JFET differential pairs, enabling rail-to-rail common-mode input range up to VCC+ and ultra-low input bias current (≤200 pA). Its internal compensation ensures stable unity-gain operation with ≤300 pF capacitive load drive capability.
It operates across 0°C to 70°C ambient temperature with ±2.25 V to ±20 V dual-supply flexibility, supports output short-circuit protection, and integrates EMI filtering for robust performance in noisy industrial environments like UPS power stages and servo drive control modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | Quad - enables single-package implementation of multi-stage signal chains (e.g., preamp + filter + driver + buffer) without inter-device matching drift. |
| Gain-bandwidth product | 5.25 MHz - supports stable closed-loop gain ≥10 at 500 kHz, suitable for anti-aliasing filters and active crossover networks. |
| Slew rate | 20 V/μs - preserves transient fidelity in fast-switching applications such as PWM-based motor drive feedback loops. |
| Input offset voltage | 3–10 mV (typ) - enables DC-coupled sensor interfaces requiring <10 mV baseline error, e.g., thermocouple amplifiers with cold-junction compensation. |
| Common-mode rejection | 100 dB - rejects noise from shared ground paths in three-phase UPS monitoring circuits where line-to-line voltage sensing occurs. |
| Total harmonic distortion | 0.003% at 1 kHz - meets THD requirements for professional audio mixer channel strips operating at line level (±12 V swing). |
| Supply voltage range | ±2.25 V to ±20 V - allows direct integration into legacy ±15 V industrial control systems without LDO regulation. |
Pinout & Package
TL084CNSR is housed in a 14-pin SOIC (Small Outline Integrated Circuit) package with standard JEDEC MS-012AC dimensions (8.65 mm × 3.91 mm, 1.27 mm pitch), optimized for automated PCB assembly and thermal dissipation in dense layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | 1IN− | Inverting input of Amplifier 1 - connects to feedback network in inverting configurations; requires guarded trace routing in low-level sensor applications. |
| 2 | 1IN+ | Non-inverting input of Amplifier 1 - referenced to system ground or bias network; high-impedance node sensitive to leakage currents. |
| 3 | 1OUT | Output of Amplifier 1 - drives loads up to 2 kΩ; limited to 13.5 V peak swing under ±15 V supply with 10 kΩ load. |
| 4 | VCC+ | Positive power supply rail - must be decoupled with 0.1 μF ceramic capacitor within 5 mm of pin to suppress high-frequency oscillation. |
| 5 | 2IN+ | Non-inverting input of Amplifier 2 - electrically isolated from other inputs; usable for independent reference buffering. |
| 6 | 2IN− | Inverting input of Amplifier 2 - shares same layout constraints as Pin 1; avoid coupling to digital switching nodes. |
| 7 | 2OUT | Output of Amplifier 2 - capable of sourcing/sinking ±26 mA short-circuit current; not intended for sustained overload. |
| 8 | VCC− | Negative power supply rail - forms return path for all four amplifiers; requires low-inductance connection to ground plane. |
| 9 | 3OUT | Output of Amplifier 3 - identical electrical characteristics to Pins 3 and 7; supports cascaded gain stages without inter-chip delay mismatch. |
| 10 | 3IN+ | Non-inverting input of Amplifier 3 - used in instrumentation amplifier front-end configurations with matched resistor networks. |
| 11 | 3IN− | Inverting input of Amplifier 3 - paired with Pin 10 for differential input; benefits from symmetrical PCB trace length matching. |
| 12 | 4IN+ | Non-inverting input of Amplifier 4 - commonly tied to reference voltage for level-shifting or comparator hysteresis generation. |
| 13 | 4IN− | Inverting input of Amplifier 4 - configured as transimpedance amplifier input for photodiode current-to-voltage conversion. |
| 14 | 4OUT | Output of Amplifier 4 - final stage output in multi-amplifier signal chains; subject to same stability rules as other outputs. |
Key Features
| Feature | Design Value |
|---|---|
| FET-input architecture | Input bias current ≤200 pA enables high-impedance sensor interfacing (e.g., pH electrodes, piezoelectric transducers) without significant DC error. |
| Rail-to-rail common-mode input | Accepts signals up to VCC+, eliminating need for level-shifting circuitry when amplifying signals referenced to positive supply rails. |
| Integrated EMI/RF filtering | Rejects 1 GHz interference by 53 dB, reducing susceptibility to switching noise in solar string inverters with high dv/dt gate drivers. |
| Output short-circuit protection | Limits fault current to ±26 mA, preventing thermal runaway during accidental output-to-ground shorts in motor drive current-sense amplifiers. |
| Low 1/f noise | 1.4 µVRMS integrated noise (0.1–10 Hz) supports precision DC measurements in battery impedance analyzers with sub-millivolt resolution. |
Applications
| Solar Energy Inverters | Motor Drive Control |
|---|---|
|
Use Scenario: Signal conditioning of DC-link voltage and current sensors in central inverters for MPPT and grid synchronization. IC Role / Device Role / Timing Role: Quad configuration implements simultaneous isolation-amplifier input, filter stage, reference buffer, and comparator hysteresis generator. Use Value: 100 dB CMRR rejects common-mode noise from IGBT switching (up to 20 kHz), ensuring accurate current measurement under PWM modulation. |
Use Scenario: Closed-loop torque and speed feedback in AC servo drives using Hall-effect or encoder signals. IC Role / Device Role / Timing Role: Amplifier 1–2 condition analog position feedback; Amplifier 3–4 generate precise PWM reference ramps and error integrators. Use Value: 20 V/μs slew rate preserves phase integrity in 10 kHz current-loop bandwidths, minimizing control loop latency and overshoot. |
| Pro Audio Mixers | Battery Test Equipment |
|
Use Scenario: Channel strip preamplification, equalization, and line-driver stages in analog mixing consoles. IC Role / Device Role / Timing Role: One TL084CNSR per channel handles mic preamp gain, tone control filtering, and balanced output buffering. Use Value: 0.003% THD+N at 1 kHz and ±13.5 V output swing meet AES17 professional audio line-level specifications (24 dBu). |
Use Scenario: Precision voltage/current sourcing and sensing in programmable DC electronic loads for lithium-ion cell characterization. IC Role / Device Role / Timing Role: Configured as transimpedance amplifier for shunt current sensing and difference amplifier for cell voltage monitoring. Use Value: 3–10 mV input offset enables <100 μV measurement accuracy on 100 mV shunt drops, critical for coulomb counting at C/10 rates. |
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 | Same SOIC-14 package and pinout; rated for 0°C to 70°C (identical temp grade); identical AC specs but higher max input offset (13 mV vs 10 mV). | Acceptable in non-critical audio line drivers or general-purpose filtering where offset drift <±18 µV/°C is tolerable. | Select TL084CDR only if cost sensitivity outweighs need for tighter offset spec in precision sensor front-ends. |
| OPA4134UA | Higher precision: 0.5 mV max offset, 0.2 µV/°C drift, 8 MHz GBW; SOIC-14 package; requires ±18 V max supply (vs ±20 V for TL084CNSR). | Better suited for studio-grade microphone preamps or medical EEG amplifiers demanding sub-millivolt DC accuracy. | Choose OPA4134UA when THD+N <0.0001% and 1/f noise <1.2 µVRMS are required - at ~3× cost premium over TL084CNSR. |
Compared with TL084CDR, TL084CNSR offers tighter initial offset tolerance for improved DC accuracy in battery test fixtures; versus OPA4134UA, it trades precision for wider supply range and lower cost in industrial motor control feedback paths.
Availability
TL084CNSR is available at Aetrix Electronics and suitable for solar energy inverters, motor drive control systems, pro audio mixers, and battery test equipment requiring stable component supply across extended production lifecycles.
Supply support for TL084CNSR 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 50 years of op-amp innovation and broad industrial design-in support.
The TL08x family was engineered for cost-sensitive, high-reliability analog signal conditioning in power electronics and audio - balancing JFET input performance with ruggedness across commercial and extended temperature grades.
FAQ
What is the maximum supply voltage for TL084CNSR?
The TL084CNSR supports dual-supply operation from ±2.25 V to ±20 V (4.5 V to 40 V total), with absolute maximum ratings of –0.3 V to +36 V on VCC+ and –36 V to +0.3 V on VCC− for NS and PS packages. Exceeding these limits risks permanent damage.
Does TL084CNSR include internal EMI filtering?
Yes, TL084CNSR integrates on-die EMI and RF filters, delivering 53 dB electromagnetic interference rejection ratio at 1 GHz - a key feature confirmed in TI's SLOS081O datasheet Section 5.7 and critical for noise immunity in solar inverter and UPS applications.
Can TL084CNSR drive capacitive loads?
TL084CNSR is characterized to drive up to 300 pF capacitive loads while maintaining stability, as specified in its Electrical Characteristics table (Section 5.7). For loads >200 pF, external series resistance (≥10 Ω) at the output is recommended to prevent peaking or oscillation.
What is the input offset voltage specification for TL084CNSR?
TL084CNSR has a typical input offset voltage of 3 mV, with a maximum of 10 mV at 25°C and full-range maximum of 13 mV (0°C to 70°C), per Section 5.8 of the official TI datasheet - making it suitable for medium-precision DC-coupled applications like battery voltage monitoring.
Is TL084CNSR pin-compatible with other TL084 variants?
Yes, TL084CNSR uses the industry-standard SOIC-14 footprint and pinout defined in Table 4-5 of the TI datasheet, matching TL084CDR, TL084IDR, and TL084ACDR - enabling drop-in replacement within the same temperature grade and package type without PCB modification.
TL084CNSR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.209", 5.30mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- J-FET
- Number of Circuits:
- 4
- Output Type:
- -
- Slew Rate:
- 13V/µs
- Gain Bandwidth Product:
- 3 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 30 pA
- Voltage - Input Offset:
- 3 mV
- Current - Supply:
- 1.4mA (x4 Channels)
- Current - Output / Channel:
- 10 mA
- Voltage - Supply Span (Min):
- 10 V
- Voltage - Supply Span (Max):
- 30 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SO
TL084CNSR FAQ
1.How can I place an order for TL084CNSR through Aetrix?
Please submit a Request for Quotation (RFQ) for TL084CNSR 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 TL084CNSR reliable?
The price and inventory of TL084CNSR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL084CNSR is usually 5 days.
3.What payment methods are accepted for TL084CNSR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL084CNSR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL084CNSR?
TL084CNSR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL084CNSR 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 TL084CNSR?
For technical support, including TL084CNSR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL084CNSR requirements.
6.How does Aetrix verify that TL084CNSR is sourced from the original manufacturer or authorized distributors?
All TL084CNSR 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 TL084CNSR meets industry standards.
7.What is the process for return or replacement of TL084CNSR?
All TL084CNSR units undergo pre-shipment inspection (PSI). If there is an issue with TL084CNSR, 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 TL084CNSR part is unused and in its original packaging.
Return procedure for TL084CNSR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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