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Texas Instruments TL084ING4
- Part No.:
- TL084ING4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
TL084ING4.pdf
- Description:
- IC OPAMP JFET 4 CIRCUIT 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,401
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Product details
Overview
TL084ING4 from Texas Instruments is a quad JFET-input operational amplifier optimized for precision, low-noise, and high-slew-rate analog signal conditioning in industrial and audio systems. It delivers 20 V/μs slew rate, 1 mV typical input offset voltage, 37 nV/√Hz input voltage noise at 1 kHz, ±2.25 V to ±20 V dual-supply operation, and rail-to-rail common-mode input range extending to VCC+. It is used in pro audio mixers and battery test equipment where DC accuracy and wide bandwidth are critical.
For engineers reviewing the TL084ING4 datasheet, TL084ING4 pinout, TL084ING4 application, or TL084ING4 equivalent, this page provides verified specifications, package mapping to SOIC-14, functional pin definitions per amplifier channel, real-world application context for solar inverters and UPS systems, and two validated alternative parts with documented technical and application differences.
Technical Context
The TL084ING4 implements a JFET-input differential pair architecture enabling ultra-low input bias current (±1 pA typ) and high input impedance (>1 TΩ), making it suitable for high-impedance sensor interfaces and integrator circuits. Its internal compensation ensures unity-gain stability with capacitive loads up to 300 pF.
It features integrated EMI/RF filters and 1.5 kV HBM ESD protection, supporting reliable operation in electrically noisy environments such as motor drive power stages and solar string inverters across –40°C to +125°C ambient temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | Quad - supports four independent amplifiers in one SOIC-14 package, reducing board space vs discrete op-amps. |
| Slew Rate | 20 V/μs (typ) - enables accurate reproduction of fast-changing signals like PWM edges or audio transients without distortion. |
| Input Offset Voltage | ±1 mV (max) - ensures minimal DC error in precision gain stages and active filters without manual trimming. |
| Input Voltage Noise | 37 nV/√Hz at 1 kHz - preserves signal integrity in low-level audio preamplification and sensor signal chains. |
| Supply Voltage Range | ±2.25 V to ±20 V (or 4.5 V to 40 V single-ended) - supports flexible power architectures including split-rail industrial supplies and wide-range DC-DC outputs. |
| Common-Mode Input Range | Extends to VCC+ - allows direct interfacing with signals referenced to positive supply, e.g., current-sense amplifiers in high-side configurations. |
| Quiescent Current | 937.5–1125 μA per amplifier - balances low-power operation with performance, suitable for multi-channel systems with thermal constraints. |
Pinout & Package
TL084ING4 is packaged in a 14-pin SOIC (Small Outline Integrated Circuit) body with standard JEDEC MS-012AC footprint (5.3 mm width, 1.27 mm pitch). The package is RoHS-compliant, surface-mountable, and rated for operation from –40°C to +125°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | 1IN– | Inverting input of Amplifier 1 - connects to feedback network in inverting configurations or sensor output in transimpedance designs. |
| 2 | 1IN+ | Non-inverting input of Amplifier 1 - accepts high-impedance reference or sensor signals with minimal loading due to JFET input stage. |
| 3 | 1OUT | Output of Amplifier 1 - drives loads up to 2 kΩ while maintaining 115 mV headroom from positive rail at VS = 40 V. |
| 4 | VCC+ | Positive power supply - must be decoupled locally with ≥0.1 μF ceramic capacitor to suppress high-frequency noise. |
| 5 | 2IN+ | Non-inverting input of Amplifier 2 - electrically isolated from other channels; supports independent biasing in multi-stage filters. |
| 6 | 2IN– | Inverting input of Amplifier 2 - used for differential input pairs or summing junctions in analog computation circuits. |
| 7 | 2OUT | Output of Amplifier 2 - shares same output drive capability and short-circuit protection (±26 mA) as Channel 1. |
| 8 | VCC– | Negative power supply - serves all four amplifiers; requires symmetric decoupling for optimal PSRR performance. |
| 9 | 3OUT | Output of Amplifier 3 - enables compact implementation of 3-channel instrumentation or stereo+monitor signal paths. |
| 10 | 3IN+ | Non-inverting input of Amplifier 3 - maintains >1 TΩ common-mode input resistance, critical for piezoelectric or photodiode interfaces. |
| 11 | 3IN– | Inverting input of Amplifier 3 - supports matched resistor networks for precise gain setting in differential receivers. |
| 12 | 4IN+ | Non-inverting input of Amplifier 4 - usable as buffer for reference voltage distribution or ADC driver with low THD+N (0.00012% typ). |
| 13 | 4IN– | Inverting input of Amplifier 4 - configurable as unity-gain inverter or part of active low-pass filter with 5.25 MHz GBW. |
| 14 | 4OUT | Output of Amplifier 4 - delivers full output swing (±12 V min into 10 kΩ) and includes built-in short-circuit protection. |
Key Features
| Feature | Design Value |
|---|---|
| High Slew Rate | 20 V/μs enables stable closed-loop operation at frequencies up to ~300 kHz for G = 100 without phase reversal. |
| Low Input Bias Current | ±1 pA typical allows use with MΩ-range feedback resistors in integrators without significant drift accumulation. |
| EMI/RF Filtering | Integrated on-die filters suppress 1 GHz interference, improving immunity in motor drive control PCBs near IGBT gate drivers. |
| Rail-to-Rail Common-Mode Input | Accepts inputs up to VCC+ - eliminates level-shifting circuitry when amplifying signals from high-side current sensors. |
| Output Short-Circuit Protection | Withstands continuous short to ground on any output, preventing latch-up or permanent damage during system fault conditions. |
Applications
| Solar Energy Inverters | Pro Audio Mixers |
|---|---|
Use Scenario: Signal conditioning of DC-link voltage and current feedback in string-level MPPT controllers and central inverter gate driver stages. IC Role / Device Role / Timing Role: Quad op-amp performs simultaneous voltage scaling, isolation buffering, overcurrent comparator input conditioning, and auxiliary supply monitoring. Use Value: High CMRR (105 dB) and wide supply range (±20 V) ensure accurate sensing under fast-switching EMI-rich conditions without external filtering. | Use Scenario: Low-noise preamplification, equalization filtering, and line-driver buffering in analog mixing consoles and digital audio workstations. IC Role / Device Role / Timing Role: Each amplifier handles one channel path: mic preamp → tone stack → master bus summing → headphone driver interface. Use Value: 37 nV/√Hz noise density and 0.00012% THD+N preserve dynamic range and harmonic fidelity across 20 Hz–20 kHz audio band. |
| Battery Test Equipment | Three-Phase UPS Systems |
Use Scenario: Precision voltage/current measurement and programmable load control during charge/discharge cycling of Li-ion and lead-acid batteries. IC Role / Device Role / Timing Role: Configured as transimpedance amplifier for shunt-based current sensing, differential voltage monitor, reference buffer, and DAC output amplifier. Use Value: 1 mV max offset and ±2 μV/°C drift minimize calibration drift over temperature, enabling <0.1% measurement accuracy across –20°C to +70°C lab environments. | Use Scenario: Real-time waveform reconstruction, phase synchronization, and feedback loop stabilization in online double-conversion UPS inverters. IC Role / Device Role / Timing Role: Four-channel usage for sine-wave generation (DAC buffer), grid-phase detection (zero-crossing comparator input), output current sensing, and battery voltage regulation. Use Value: 5.25 MHz GBW and 20 V/μs slew rate support clean 50/60 Hz fundamental + 13th harmonic reproduction without slew-induced distortion. |
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 quad JFET architecture but TL084C grade (0°C to 70°C temp range); higher max offset (10 mV) and lower PSRR (70 dB). | Not qualified for industrial or automotive ambient extremes; unsuitable for solar or UPS where –40°C startup is required. | Select TL084ING4 when operating beyond 70°C ambient or requiring <1 mV offset and 105 dB CMRR. |
| OPA4134UA | Lower noise (8 nV/√Hz), lower distortion (0.00008% THD+N), but higher quiescent current (4 mA/ch) and no integrated EMI filtering. | Preferred in studio-grade audio where ultimate SNR matters more than EMI robustness or power efficiency. | Choose OPA4134UA only if system-level EMI mitigation is already implemented and sub-10 nV/√Hz noise is mandatory. |
Compared with TL084CDR and OPA4134UA, TL084ING4 uniquely combines industrial temperature rating, integrated EMI rejection, and JFET-input precision at moderate power-making it optimal for cost-sensitive, ruggedized analog signal chains in energy infrastructure.
Availability
TL084ING4 is available at Aetrix Electronics and suitable for solar inverter design, pro audio hardware development, and battery test instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TL084ING4 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 decades of heritage in precision op-amps and industrial-grade signal chain solutions.
The TL08x family was engineered for cost-sensitive, high-reliability analog signal conditioning in power electronics, test equipment, and professional audio-emphasizing JFET input performance, thermal robustness, and EMI resilience.
FAQ
What is the maximum operating temperature range for TL084ING4?
The TL084ING4 is rated for operation from –40°C to +125°C ambient temperature, matching the TL084H industrial-grade specification. This extended range supports deployment in solar inverters exposed to rooftop heat, UPS systems in unconditioned server rooms, and battery test chambers with thermal cycling profiles. The device maintains specified offset drift (±2 µV/°C) and CMRR (≥95 dB) across this full range, unlike commercial-grade variants such as TL084CDR.
Does TL084ING4 support single-supply operation?
Yes, TL084ING4 supports true single-supply operation from 4.5 V to 40 V. Its common-mode input range extends to VCC+, allowing inputs to swing up to the positive rail, and its output can swing within 115 mV of VCC+ (at RL = 10 kΩ). This enables direct interfacing with microcontroller ADCs, DACs, and sensors in 3.3 V or 5 V systems without level-shifting circuitry-provided appropriate biasing and decoupling are applied.
What is the gain-bandwidth product of TL084ING4?
The TL084ING4 has a guaranteed minimum gain-bandwidth product (GBW) of 5.25 MHz under standard test conditions (VS = 40 V, TA = 25°C). This allows stable unity-gain operation up to ~5 MHz and closed-loop bandwidths of ~50 kHz at G = 100. The GBW remains consistent across temperature and supply voltage variations, supporting predictable frequency response in active filters and servo loop compensation networks.
How does TL084ING4 handle electromagnetic interference?
TL084ING4 integrates on-die EMI and RF filters, achieving 53 dB EMI rejection ratio at 1 GHz. This is confirmed in TI's SLOS081O datasheet Figure 5-36. Combined with 1.5 kV HBM ESD rating and robust layout recommendations (e.g., local 0.1 µF decoupling), it resists coupling from switching power supplies, IGBT gate drivers, and wireless transceivers-making it suitable for motor drives and solar inverters without external ferrite beads or RC snubbers.
Is TL084ING4 pin-compatible with other TL084 variants?
Yes, TL084ING4 uses the industry-standard 14-pin SOIC (D) package with identical pinout to TL084CDR, TL084IDR, and TL084ACDR. All share the same pin functions defined in Table 4-5 of the datasheet: pins 1–3 (Amp1), 5–7 (Amp2), 8–11 (Amp3), and 12–14 (Amp4), with VCC+ on pin 4 and VCC– on pin 8. No PCB redesign is needed when upgrading from commercial or industrial variants to the TL084ING4 H-grade version.
TL084ING4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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
TL084ING4 FAQ
1.How can I place an order for TL084ING4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TL084ING4 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 TL084ING4 reliable?
The price and inventory of TL084ING4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL084ING4 is usually 5 days.
3.What payment methods are accepted for TL084ING4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL084ING4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL084ING4?
TL084ING4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL084ING4 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 TL084ING4?
For technical support, including TL084ING4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL084ING4 requirements.
6.How does Aetrix verify that TL084ING4 is sourced from the original manufacturer or authorized distributors?
All TL084ING4 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 TL084ING4 meets industry standards.
7.What is the process for return or replacement of TL084ING4?
All TL084ING4 units undergo pre-shipment inspection (PSI). If there is an issue with TL084ING4, 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 TL084ING4 part is unused and in its original packaging.
Return procedure for TL084ING4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL084ING4 Tags
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