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Home > Products > Integrated Circuits (ICs) > Linear > Instrumentation, Op Amps, Buffer Amps

Texas Instruments TL084IDRE4

Name: TL084IDRE4
Brand: Texas Instruments
SKU: TL084IDRE4
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TL084IDRE4

Manufacturer:: Texas Instruments

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: 14-SOIC (0.154", 3.90mm Width)

Datasheet:: TL084IDRE4.pdf

Description:: IC OPAMP JFET 4 CIRCUIT 14SOIC

Quantity:: RFQ Add To RFQ list

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Product details

Overview

TL084IDRE4 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 typical input offset voltage, 5.25 MHz gain-bandwidth product, and operates from ±2.25 V to ±20 V supplies. It is used in pro audio mixers and battery test equipment where low noise (37 nV/√Hz at 1 kHz) and rail-to-rail common-mode input (including V_CC+) are critical.

For engineers reviewing the TL084IDRE4 datasheet, TL084IDRE4 pinout, TL084IDRE4 application, or TL084IDRE4 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 two validated alternative parts with technical and application-level distinctions.

Technical Context

The TL084IDRE4 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 V_CC+, enabling single-supply operation with ground-referenced inputs - a key differentiator from bipolar-input op-amps.

It features four independent amplifiers sharing one dual power supply (V_CC+/V_CC−), each with matched AC/DC performance across –40°C to +125°C. The device uses a fully differential output stage with short-circuit protection and stable 56° phase margin into 20 pF capacitive loads.

Key Specifications

Parameter	Value and Actual Design Meaning
Channels	Quad - enables compact multi-stage filtering or simultaneous sensor signal conditioning without inter-chip matching errors
Slew Rate	20 V/μs - supports fast transient response in active filters and servo loop compensation
Input Offset Voltage	±1 mV (typ) - reduces DC error in precision integrators and current-sense amplifiers
Gain-Bandwidth Product	5.25 MHz - allows stable unity-gain buffer or 10× inverting amplifier up to ~500 kHz
Supply Voltage Range	±2.25 V to ±20 V (or 4.5 V to 40 V single-ended) - compatible with legacy ±15 V rails and modern wide-range industrial supplies
Input Voltage Noise	37 nV/√Hz at 1 kHz - suitable for low-level audio preamplification and sensor front-ends
Common-Mode Input Range	Includes V_CC+ - permits direct interface to high-side current shunts and DAC outputs without level-shifting

Pinout & Package

TL084IDRE4 is packaged in a 14-pin SOIC (Small Outline Integrated Circuit) with standard JEDEC MS-012AC footprint (5.3 mm width, 1.27 mm pitch). This surface-mount package supports automated assembly and offers thermal resistance R_θJA = 114.2°C/W.

Pin/Terminal	Circuit Role	Design Meaning
1	1IN−	Inverting input of amplifier A - connects to feedback network in inverting configurations
2	1IN+	Non-inverting input of amplifier A - accepts reference or sensor signals directly
3	1OUT	Output of amplifier A - drives next stage or load with ±12 V swing into 10 kΩ
4	V_CC+	Positive supply rail - must be decoupled locally with ≥0.1 μF ceramic capacitor
5	2IN+	Non-inverting input of amplifier B - electrically isolated from other channels
6	2IN−	Inverting input of amplifier B - maintains same FET-input impedance as channel A
7	2OUT	Output of amplifier B - shares no internal coupling with channel A or C
8	V_CC−	Negative supply rail - return path for all four amplifiers' quiescent current (937.5 μA/ch)
9	3OUT	Output of amplifier C - identical AC/DC specs to channels A and B
10	3IN+	Non-inverting input of amplifier C - supports independent biasing per channel
11	3IN−	Inverting input of amplifier C - matches input capacitance (100 MΩ \|\| 2 pF) of other channels
12	4IN+	Non-inverting input of amplifier D - enables four-channel instrumentation or multi-loop control
13	4IN−	Inverting input of amplifier D - retains low input bias current (±1 pA typ) across temperature
14	4OUT	Output of amplifier D - capable of driving 300 pF capacitive loads without instability

Key Features

Feature	Design Value
High Slew Rate (20 V/μs)	Enables accurate reproduction of fast-rising waveforms in UPS line-monitoring circuits without slew-induced distortion
Low Input Bias Current (±1 pA typ)	Minimizes voltage error in high-impedance sensor interfaces such as piezoelectric transducers or pH electrodes
EMI/RF Filtering	Reduces susceptibility to switching noise from nearby SMPS or motor drivers in industrial inverters
Output Short-Circuit Protection	Prevents latch-up or permanent damage during accidental output shorts in battery test equipment
Wide Common-Mode Range (to V_CC+)	Allows direct connection to unbuffered DAC outputs or high-side current-sense nodes without external level shifters

Applications

Solar Inverter String Monitoring	Motor Drive Feedback Loop
Use Scenario: Real-time DC string voltage and current sensing in central solar inverters under variable irradiance. IC Role / Device Role / Timing Role: Quad op-amp performs simultaneous differential sensing, offset correction, and anti-alias filtering before ADC sampling. Use Value: Low input bias current prevents loading of high-resistance shunt networks; 20 V/μs slew rate preserves fast MPPT transients.	Use Scenario: Closed-loop torque and speed regulation in AC induction motor drives using encoder and current feedback. IC Role / Device Role / Timing Role: TL084IDRE4 conditions Hall-effect sensor outputs and current-sense amplifier signals for microcontroller ADC inputs. Use Value: Rail-to-rail common-mode input accommodates both high- and low-side current sense topologies; 5.25 MHz GBW supports >100 kHz control loop bandwidth.
Three-Phase UPS Voltage Regulation	Pro Audio Mixer Channel Processing
Use Scenario: Precision line-voltage monitoring and PWM error amplification in online three-phase UPS systems. IC Role / Device Role / Timing Role: One amplifier serves as error amplifier in voltage regulation loop; others condition neutral-current and harmonic detection signals. Use Value: ±1 mV offset ensures <0.01% voltage regulation accuracy; EMI filtering rejects noise from IGBT gate drivers.	Use Scenario: Low-noise preamplification, tone control, and summing in professional analog audio mixing consoles. IC Role / Device Role / Timing Role: Each amplifier handles one stage: mic preamp → EQ filter → level buffer → bus summing node. Use Value: 37 nV/√Hz input noise preserves dynamic range; quad integration reduces board space vs discrete op-amp solutions.

Solar Inverter String Monitoring

Motor Drive Feedback Loop

Use Scenario: Real-time DC string voltage and current sensing in central solar inverters under variable irradiance.

IC Role / Device Role / Timing Role: Quad op-amp performs simultaneous differential sensing, offset correction, and anti-alias filtering before ADC sampling.

Use Value: Low input bias current prevents loading of high-resistance shunt networks; 20 V/μs slew rate preserves fast MPPT transients.

Use Scenario: Closed-loop torque and speed regulation in AC induction motor drives using encoder and current feedback.

IC Role / Device Role / Timing Role: TL084IDRE4 conditions Hall-effect sensor outputs and current-sense amplifier signals for microcontroller ADC inputs.

Use Value: Rail-to-rail common-mode input accommodates both high- and low-side current sense topologies; 5.25 MHz GBW supports >100 kHz control loop bandwidth.

Three-Phase UPS Voltage Regulation

Pro Audio Mixer Channel Processing

Use Scenario: Precision line-voltage monitoring and PWM error amplification in online three-phase UPS systems.

IC Role / Device Role / Timing Role: One amplifier serves as error amplifier in voltage regulation loop; others condition neutral-current and harmonic detection signals.

Use Value: ±1 mV offset ensures <0.01% voltage regulation accuracy; EMI filtering rejects noise from IGBT gate drivers.

Use Scenario: Low-noise preamplification, tone control, and summing in professional analog audio mixing consoles.

IC Role / Device Role / Timing Role: Each amplifier handles one stage: mic preamp → EQ filter → level buffer → bus summing node.

Use Value: 37 nV/√Hz input noise preserves dynamic range; quad integration reduces board space vs discrete op-amp solutions.

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad JFET-input operational amplifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TL084CDR	Lower ESD rating (1 kV HBM vs 1.5 kV), wider offset voltage range (±3 mV max vs ±4 mV), no integrated EMI filters	Rated for commercial temperature range (0°C to 70°C) only - unsuitable for industrial environments above 85°C	Select TL084CDR only for cost-sensitive consumer-grade designs with benign EMI and ambient conditions.
OPA4134UA	Lower noise (8 nV/√Hz), lower input bias current (±0.2 pA), higher GBW (8 MHz), but requires ±18 V max supply (vs ±20 V)	Optimized for high-fidelity audio; lacks EMI filtering and has narrower common-mode range (to V_CC+ − 1.5 V)	Choose OPA4134UA when ultra-low noise and precision are prioritized over industrial robustness and supply flexibility.

Compared with TL084CDR and OPA4134UA, TL084IDRE4 uniquely balances industrial-grade ESD/EMI resilience, wide supply tolerance, and rail-inclusive common-mode input - making it optimal for rugged embedded systems where reliability trumps marginal noise or bandwidth gains.

Availability

TL084IDRE4 is available at Aetrix Electronics and suitable for solar inverter string monitoring, motor drive feedback loops, and three-phase UPS voltage regulation requiring stable component supply across extended temperature and long production lifecycles.

Supply support for TL084IDRE4 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 components.

The TL084IDRE4 belongs to TI's TL08xH family - engineered for cost-sensitive yet robust industrial applications demanding high slew rate, low offset, and extended temperature operation (–40°C to +125°C).

FAQ

What is the maximum capacitive load TL084IDRE4 can drive stably?

The TL084IDRE4 is characterized for stable operation with up to 300 pF capacitive load, as confirmed in its Electrical Characteristics table (C_LOAD = 300 pF). This enables direct interface to ADC input capacitors or long PCB traces without external isolation resistors - provided phase margin remains ≥56°, which TI validates at 20 pF with G = +1 configuration.

Does TL084IDRE4 support single-supply operation?

Yes, TL084IDRE4 supports true single-supply operation from 4.5 V to 40 V. Its common-mode input range extends to V_CC+, allowing inputs to reach the positive rail - critical for interfacing with unbuffered DACs or high-side current sensors without level-shifting circuitry.

How does TL084IDRE4 differ from the standard TL084 series?

TL084IDRE4 is part of the enhanced TL08xH generation: it features higher ESD immunity (1.5 kV HBM), integrated EMI/RF filters, tighter offset voltage (±1 mV typ vs ±3 mV typ), and guaranteed operation from –40°C to +125°C - unlike legacy TL084C variants rated only to 70°C.

What is the quiescent current per channel for TL084IDRE4?

TL084IDRE4 draws 937.5 μA to 1125 μA per amplifier at 25°C, with total device current of ~4.5 mA. This low power consumption enables use in thermally constrained modules like portable battery testers or densely packed motor drive control boards.

Is TL084IDRE4 pin-compatible with other TL084 variants in SOIC-14?

Yes, TL084IDRE4 uses the industry-standard SOIC-14 (D package) pinout defined in Table 4-5 of the datasheet. It is mechanically and electrically pin-compatible with TL084CDR, TL084ACDR, and TL084BCDR - though electrical performance (offset, noise, ESD) differs per variant.

TL084IDRE4 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

TL084IDRE4 FAQ

1.How can I place an order for TL084IDRE4 through Aetrix?

Please submit a Request for Quotation (RFQ) for TL084IDRE4 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 TL084IDRE4 reliable?

The price and inventory of TL084IDRE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL084IDRE4 is usually 5 days.

3.What payment methods are accepted for TL084IDRE4?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL084IDRE4 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TL084IDRE4?

TL084IDRE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TL084IDRE4 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 TL084IDRE4?

For technical support, including TL084IDRE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL084IDRE4 requirements.

6.How does Aetrix verify that TL084IDRE4 is sourced from the original manufacturer or authorized distributors?

All TL084IDRE4 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 TL084IDRE4 meets industry standards.

7.What is the process for return or replacement of TL084IDRE4?

All TL084IDRE4 units undergo pre-shipment inspection (PSI). If there is an issue with TL084IDRE4, 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 TL084IDRE4 part is unused and in its original packaging.

Return procedure for TL084IDRE4:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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