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Texas Instruments TL084IDRG4
- Part No.:
- TL084IDRG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TL084IDRG4.pdf
- Description:
- IC OPAMP JFET 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,266
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Product details
Overview
TL084IDRG4 from Texas Instruments is a quad JFET-input operational amplifier optimized for precision analog signal conditioning in industrial and audio systems. It delivers 20 V/μs slew rate, ±1 mV input offset voltage (typ), 5.25 MHz gain-bandwidth product, 125 dB open-loop gain, and operates from ±2.25 V to ±20 V supplies. Used in pro audio mixers and battery test equipment where low noise and rail-to-rail common-mode input are critical.
For engineers reviewing the TL084IDRG4 datasheet, TL084IDRG4 pinout, TL084IDRG4 application, or TL084IDRG4 equivalent, this page provides verified specifications, SOIC-14 package details, functional pin mapping, real-world use cases in motor drive feedback and UPS monitoring, and validated alternative options for design continuity.
Technical Context
The TL084IDRG4 implements a high-slew-rate JFET-input stage with integrated EMI/RF filtering and 1.5 kV HBM ESD protection. Its input stage supports common-mode voltage up to VCC+, enabling single-supply operation with ground-referenced inputs. The quad architecture shares thermal coupling across amplifiers but maintains channel separation better than 1 µV/V at DC.
It features output short-circuit protection, 37 nV/√Hz input voltage noise at 1 kHz, and 0.00012% THD+N at 1 kHz - characteristics confirmed for the TL084H variant under 40 V supply conditions. The device is rated for –40°C to +125°C operation and meets TI's enhanced reliability standards for rugged applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Slew Rate | 20 V/μs - enables accurate reproduction of fast transients in audio and control loops without distortion |
| Input Offset Voltage | ±1 mV (typ) - ensures <100 μV error in unity-gain buffer configurations at room temperature |
| Gain-Bandwidth Product | 5.25 MHz - supports stable closed-loop gain ≥10 up to ~500 kHz with adequate phase margin |
| Common-Mode Input Range | Includes VCC+ - allows direct sensing of signals referenced to positive rail (e.g., current-sense in high-side configurations) |
| Supply Voltage Range | ±2.25 V to ±20 V (or 4.5 V to 40 V single-ended) - compatible with legacy ±15 V systems and modern wide-range industrial rails |
| Input Bias Current | ±1 pA (typ) - minimizes voltage error across high-impedance sensor interfaces like piezoelectric or pH electrodes |
| THD+N | 0.00012% (typ) at 1 kHz - meets pro-audio line-level signal fidelity requirements |
Pinout & Package
TL084IDRG4 is supplied in a 14-pin SOIC (Small Outline Integrated Circuit) package, surface-mount compatible with standard 1.27 mm pitch PCB assembly. Thermal resistance RθJA is 114.2°C/W, supporting continuous operation at ambient temperatures up to +125°C with appropriate board layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | 1OUT | Output of first amplifier - drives loads up to ±26 mA with 210 mV headroom to positive rail (40 V supply) |
| 2 | 1IN– | Inverting input of first amplifier - high-impedance JFET node (6 TΩ || 1 pF) for minimal loading |
| 3 | 1IN+ | Non-inverting input of first amplifier - accepts common-mode voltages up to VCC+ |
| 4 | VCC+ | Positive power supply terminal - must be decoupled locally with ≥0.1 μF ceramic capacitor |
| 5 | 2IN+ | Non-inverting input of second amplifier - electrically isolated but thermally coupled to other channels |
| 6 | 2IN– | Inverting input of second amplifier - matched to Pin 2 for differential pair stability |
| 7 | 2OUT | Output of second amplifier - identical AC/DC performance to Pin 1 |
| 8 | VCC– | Negative power supply terminal - return path for all four amplifiers; requires low-impedance grounding |
| 9 | 3IN– | Inverting input of third amplifier - pin-compatible with industry-standard TL084 footprint |
| 10 | 3IN+ | Non-inverting input of third amplifier - supports same input voltage range as Pins 2 and 3 |
| 11 | 3OUT | Output of third amplifier - fully specified for capacitive load drive up to 300 pF |
| 12 | 4IN+ | Non-inverting input of fourth amplifier - enables independent configuration of each channel |
| 13 | 4IN– | Inverting input of fourth amplifier - matches input capacitance and bias current of other inputs |
| 14 | 4OUT | Output of fourth amplifier - capable of driving 10 kΩ loads with ≤0.91 μs settling to 0.01% |
Key Features
| Feature | Design Value |
|---|---|
| High ESD robustness | 1.5 kV HBM rating - reduces field failure risk in handling and automated assembly environments |
| Integrated EMI/RF filters | Rejects 1 GHz interference at 53 dB - eliminates need for external RF chokes in noisy industrial settings |
| Low input bias current | ±1 pA typical - preserves signal integrity in high-Z sensor front-ends (e.g., photodiode transimpedance amps) |
| Output short-circuit protection | Self-limiting to ±26 mA - prevents latch-up or thermal runaway during fault conditions |
| Wide temperature range | Specified from –40°C to +125°C - qualified for under-hood automotive and industrial motor drive applications |
Applications
| Solar Inverter Signal Conditioning | Pro Audio Mixer Channel Amplification |
|---|---|
Use Scenario: Monitoring DC string voltage and current in central inverters using precision shunt-based sensing. IC Role / Device Role / Timing Role: Quad op-amp configured as two differential amplifiers (for voltage/current) and two active filters (anti-aliasing). Use Value: 20 V/μs slew rate handles fast MPPT transients; ±1 mV offset ensures <0.01% measurement error over temperature. |
Use Scenario: Low-noise pre-amplification and summing of microphone/line-level signals in analog mixing consoles. IC Role / Device Role / Timing Role: Four independent gain stages with unity-gain stable topology and 37 nV/√Hz noise floor. Use Value: 0.00012% THD+N meets AES17 professional audio standards; JFET input avoids loading high-impedance sources. |
| Battery Test Equipment Feedback Loop | Three-Phase UPS Voltage Regulation |
Use Scenario: Closed-loop control of charge/discharge current and voltage in programmable battery cyclers. IC Role / Device Role / Timing Role: Precision error amplifier comparing sensed battery voltage to reference, driving PWM controller. Use Value: 125 dB open-loop gain ensures <1 ppm regulation error; common-mode input to VCC+ simplifies single-supply design. |
Use Scenario: Real-time monitoring and correction of phase-to-phase voltage imbalance in online UPS systems. IC Role / Device Role / Timing Role: Quad amplifier performing three-phase voltage scaling, offset correction, and fault detection comparator input conditioning. Use Value: 5.25 MHz GBW supports fast transient response to load steps; 1.5 kV HBM withstands surge events on AC mains lines. |
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 | Lower ESD rating (1 kV HBM), wider offset voltage range (±3 mV max), no integrated EMI filter | Qualified only for 0°C to 70°C commercial use; unsuitable for harsh environments or high-reliability audio | Cost-optimized option for non-critical, temperature-controlled consumer electronics |
| OPA4134UA | Lower noise (8 nV/√Hz), lower THD+N (0.00008%), higher quiescent current (4 mA/ch), no short-circuit protection | Requires external fault protection; preferred in studio-grade audio where ultimate SNR outweighs robustness | Best for ultra-low-distortion audio paths where thermal management and fault tolerance are externally handled |
Compared with TL084CDR, TL084IDRG4 offers superior ESD immunity and extended temperature capability; compared with OPA4134UA, it trades some noise performance for built-in short-circuit protection and lower power consumption - making it optimal for industrial signal conditioning where reliability and efficiency are prioritized.
Availability
TL084IDRG4 is available at Aetrix Electronics and suitable for solar inverter monitoring, pro audio mixer design, and battery test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TL084IDRG4 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 ICs.
The TL084IDRG4 belongs to TI's TL08xH FET-input op-amp family, engineered for cost-sensitive yet robust applications demanding high slew rate, low offset, and wide supply range - particularly in motor drives, renewable energy, and test instrumentation.
FAQ
What is the maximum operating temperature for TL084IDRG4?
The TL084IDRG4 is specified for continuous operation from –40°C to +125°C ambient temperature. This rating is confirmed in Section 5.3 of the TI datasheet under Recommended Operating Conditions for the TL084H variant. Derating is not required within this range when PCB thermal design maintains junction temperature below 150°C.
Does TL084IDRG4 support single-supply operation?
Yes, TL084IDRG4 supports true single-supply operation due to its common-mode input voltage range extending to VCC+. When powered from +5 V to +40 V (with VCC– grounded), inputs can swing from 0 V to VCC+, enabling direct interfacing with microcontroller ADC references or unipolar sensors without level-shifting circuitry.
What is the output drive capability of TL084IDRG4?
TL084IDRG4 delivers ±26 mA short-circuit output current per amplifier and drives capacitive loads up to 300 pF while maintaining stability. Under 40 V supply with 10 kΩ load, output swing is within 210 mV of VCC+ and 215 mV of VCC–, enabling high-fidelity signal delivery into moderate-impedance loads.
How does TL084IDRG4 differ from older TL084 variants?
TL084IDRG4 is part of the TL084H generation, featuring enhanced 1.5 kV HBM ESD protection, integrated EMI/RF filters, tighter offset voltage (±1 mV typ vs ±3 mV typ for TL084C), and guaranteed operation to +125°C. It retains pin compatibility with legacy TL084 packages but improves robustness for modern industrial deployments.
Is TL084IDRG4 RoHS compliant and lead-free?
Yes, TL084IDRG4 is RoHS-compliant and lead-free, as confirmed by Texas Instruments' official packaging and environmental documentation. The "G4" suffix denotes green (halogen-free) packaging and Pb-free terminations meeting JEDEC J-STD-020 moisture sensitivity level 3 requirements.
TL084IDRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
TL084IDRG4 FAQ
1.How can I place an order for TL084IDRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TL084IDRG4 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 TL084IDRG4 reliable?
The price and inventory of TL084IDRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL084IDRG4 is usually 5 days.
3.What payment methods are accepted for TL084IDRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL084IDRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL084IDRG4?
TL084IDRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL084IDRG4 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 TL084IDRG4?
For technical support, including TL084IDRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL084IDRG4 requirements.
6.How does Aetrix verify that TL084IDRG4 is sourced from the original manufacturer or authorized distributors?
All TL084IDRG4 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 TL084IDRG4 meets industry standards.
7.What is the process for return or replacement of TL084IDRG4?
All TL084IDRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TL084IDRG4, 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 TL084IDRG4 part is unused and in its original packaging.
Return procedure for TL084IDRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL084IDRG4 Tags
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