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Texas Instruments TL084ACDRE4
- Part No.:
- TL084ACDRE4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TL084ACDRE4.pdf
- Description:
- IC OPAMP JFET 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,302
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Product details
Overview
TL084ACDRE4 from Texas Instruments is a quad JFET-input operational amplifier designed for precision analog signal conditioning in industrial and instrumentation systems. It delivers 5.25 MHz gain-bandwidth, 20 V/μs slew rate, ±1 mV input offset voltage (typ), 125 dB open-loop gain, and operates from ±2.25 V to ±20 V supplies. It is used in pro audio mixers and battery test equipment where low noise and rail-to-rail common-mode input range are critical.
For engineers reviewing the TL084ACDRE4 datasheet, TL084ACDRE4 pinout, TL084ACDRE4 application, or TL084ACDRE4 equivalent, this page provides verified specifications, SOIC-14 package details, functional pin mapping, real-world use cases, and validated alternative options for design-in and supply continuity planning.
Technical Context
The TL084ACDRE4 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 when biased appropriately.
It features four independent amplifiers sharing dual supply rails (VCC+ and VCC−), each with matched DC performance (±1 mV offset, ±2 μV/°C drift) and AC behavior (37 nV/√Hz input voltage noise at 1 kHz, 0.00012% THD+N). No internal offset nulling pins are present in the DRE4 variant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | Quad - enables compact multi-stage filtering, differential signaling, or simultaneous sensor channel conditioning without inter-chip propagation delay. |
| Gain-bandwidth product | 5.25 MHz - supports stable unity-gain buffer configurations up to ~5 MHz or closed-loop gains of 10 at ~525 kHz. |
| Slew rate | 20 V/μs - ensures faithful reproduction of fast transients in audio and control loop applications without slew-induced distortion. |
| Input offset voltage | ±1 mV (typ) - reduces DC error in precision integrators, current-sense amplifiers, and sensor front-ends without external trimming. |
| Supply voltage range | ±2.25 V to ±20 V (or 4.5 V to 40 V single-ended) - accommodates legacy ±15 V systems and modern low-voltage industrial rails. |
| Input voltage noise | 37 nV/√Hz at 1 kHz - suitable for medium-bandwidth sensor interfaces where Johnson noise dominates over 1/f noise. |
| Common-mode input range | Includes VCC+ - allows direct connection of ground-referenced signals in single-supply configurations using appropriate biasing. |
Pinout & Package
TL084ACDRE4 is supplied in a 14-pin SOIC (Small Outline Integrated Circuit) package, designated as "D" in TI's packaging nomenclature. The body dimensions are 8.65 mm × 3.91 mm × 1.75 mm (L × W × H), with 1.27 mm lead pitch and gull-wing leads compatible with standard surface-mount reflow processes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Amplifier 1 output | Drives external load or next stage; capable of ±26 mA short-circuit current and 300 pF capacitive load drive. |
| 2 | Amplifier 1 inverting input | High-impedance (6 TΩ || 1 pF) node; sensitive to PCB leakage and layout parasitics. |
| 3 | Amplifier 1 non-inverting input | Same high-Z characteristics as Pin 2; used for reference or feedback path in non-inverting configurations. |
| 4 | VCC+ | Positive supply rail shared by all four amplifiers; must be decoupled locally with ≥0.1 µF ceramic capacitor. |
| 5 | Amplifier 2 non-inverting input | Independent input for second channel; no crosstalk-dependent specification provided in datasheet. |
| 6 | Amplifier 2 inverting input | Matches Pin 2 electrical behavior; supports matched dual-channel instrumentation topologies. |
| 7 | Amplifier 2 output | Electrically identical to Pin 1; not internally connected to other outputs. |
| 8 | VCC− | Negative supply rail; return path for quiescent current (937.5–1125 µA per amplifier). |
| 9 | Amplifier 3 inverting input | Third channel input; maintains same FET-input bias current spec (±1 pA typ) across temperature. |
| 10 | Amplifier 3 non-inverting input | Complements Pin 9; enables three-channel parallel processing or cascaded gain stages. |
| 11 | Amplifier 3 output | Third independent output; shares thermal resistance RθJA = 114.2 °C/W (SOIC-14). |
| 12 | Amplifier 4 non-inverting input | Final channel input; supports full quad utilization in multi-sensor or multi-loop systems. |
| 13 | Amplifier 4 inverting input | Matches prior inverting inputs; no dedicated offset null pins - requires external trimming if needed. |
| 14 | Amplifier 4 output | Fourth output; fully isolated electrically but thermally coupled within the die. |
Key Features
| Feature | Design Value |
|---|---|
| High slew rate | 20 V/μs enables accurate amplification of fast-rising signals in motor drive current sensing and UPS transient response circuits. |
| Low input bias current | ±1 pA (typ) minimizes voltage error across high-impedance sources like piezoelectric sensors or photodiode transimpedance feedback networks. |
| EMI/RF filtering | Integrated on-die filters suppress 1 GHz interference, improving immunity in noisy industrial environments such as solar inverters and motor drives. |
| Output short-circuit protection | Self-limiting ±26 mA output current prevents latch-up or destruction during accidental shorts in test equipment or audio output stages. |
| Wide common-mode range | Input common-mode extends to VCC+, allowing single-supply operation with ground-referenced inputs in battery-powered instrumentation. |
Applications
| Solar Energy Inverters | Motor Drive Control |
|---|---|
Use Scenario: Signal conditioning of DC-link voltage and current feedback in string-level MPPT controllers and central inverter gate driver interfaces. IC Role / Device Role / Timing Role: Quad op-amp performs simultaneous isolation-amplifier buffering, level-shifting, and active filtering of analog sensor outputs before ADC sampling. Use Value: 20 V/μs slew rate preserves fast transient fidelity during fault events; ±1 mV offset ensures <0.01% measurement error in 100 V DC-link monitoring. | Use Scenario: Closed-loop torque and speed regulation in AC induction and servo motor drives, requiring synchronized analog signal paths for current, voltage, and position feedback. IC Role / Device Role / Timing Role: TL084ACDRE4 provides four matched amplifiers for three-phase current sensing plus one for bus voltage scaling in a single footprint. Use Value: Matched offset drift (±2 μV/°C) minimizes thermal-induced gain mismatch across phases, improving vector control accuracy over –40°C to +125°C. |
| Pro Audio Mixers | Battery Test Equipment |
Use Scenario: Low-noise preamplification and equalization in professional analog mixing consoles handling microphone, line, and instrument inputs. IC Role / Device Role / Timing Role: Configured as non-inverting gain stages and active filter sections (high-pass, low-pass, shelving) with precise component ratios. Use Value: 37 nV/√Hz input voltage noise at 1 kHz ensures >110 dB SNR in 20 Hz–20 kHz audio band; 0.00012% THD+N preserves signal purity. | Use Scenario: Precision voltage/current sourcing and measurement in automated battery formation, grading, and cycle-life testing systems. IC Role / Device Role / Timing Role: Used in programmable load circuits, shunt-based current monitors, and reference voltage buffers with tight DC stability requirements. Use Value: ±1 mV input offset and ±2 μV/°C drift enable ≤100 ppm DC error over full industrial temperature range, critical for millivolt-level cell voltage accuracy. |
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; wider input offset voltage (±3 mV max vs ±1 mV typ for TL084ACDRE4) and higher quiescent current (1.4–2.5 mA/ch vs 0.94 mA/ch). | Less suitable for ultra-low-offset precision applications but acceptable for general-purpose signal conditioning where cost is prioritized over DC accuracy. | Select TL084CDR only when offset drift and power consumption are secondary to procurement availability and BOM simplification. |
| OPA4134UA | Lower input voltage noise (8 nV/√Hz), lower THD+N (0.00008%), and rail-to-rail output swing - but higher supply current (4 mA/ch) and no EMI filtering. | Better for high-fidelity audio and low-distortion instrumentation; unsuitable for EMI-heavy environments like motor drives unless externally filtered. | Choose OPA4134UA when audio-grade linearity and noise performance outweigh EMI robustness and power efficiency requirements. |
Compared with TL084CDR and OPA4134UA, TL084ACDRE4 uniquely balances low offset, low power, and integrated EMI rejection - making it optimal for industrial analog signal chains where reliability under electrical noise and thermal stress is mandatory.
Availability
TL084ACDRE4 is available at Aetrix Electronics and suitable for solar inverter monitoring, motor drive control, and battery test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TL084ACDRE4 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 TL084ACDRE4 belongs to TI's TL08xx FET-input op-amp family, engineered for cost-sensitive yet robust industrial applications demanding wide supply range, high slew rate, and ESD-hardened operation from –40°C to +125°C.
FAQ
What is the maximum operating temperature range for TL084ACDRE4?
The TL084ACDRE4 is rated for operation from –40°C to +125°C ambient temperature, matching the TL084H grade specification. This extended range supports deployment in harsh environments such as industrial motor drives and outdoor solar inverters where thermal management is constrained.
Does TL084ACDRE4 include internal offset nulling pins?
No, TL084ACDRE4 does not feature offset nulling pins. Unlike earlier TL084C variants with OFFSET N1/N2 pins (e.g., PS package), the DRE4 SOIC-14 variant omits these terminals. System-level offset correction must be implemented externally via resistor networks or digital calibration.
Can TL084ACDRE4 operate from a single 5-V supply?
Yes, TL084ACDRE4 supports single-supply operation from 4.5 V to 40 V. With its common-mode input range extending to VCC+, it accepts ground-referenced inputs when VCC– is tied to 0 V and input signals are biased above ground - though output swing remains limited to ~115 mV from each rail under 10-kΩ load.
What is the typical quiescent current per amplifier in TL084ACDRE4?
The typical quiescent current per amplifier in TL084ACDRE4 is 937.5 µA at 25°C, rising to 1130 µA across the full –40°C to +125°C range. This low power draw enables use in multi-channel battery-powered instrumentation without excessive thermal loading.
Is TL084ACDRE4 pin-compatible with TL084CDR?
Yes, TL084ACDRE4 and TL084CDR share identical SOIC-14 (D) packaging and pinout. Both follow Table 4-5 in the datasheet: Pins 1–3, 5–7, 9–14 function identically as amplifier I/Os, with VCC+ on Pin 4 and VCC− on Pin 8. No PCB redesign is required for substitution.
TL084ACDRE4 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:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
TL084ACDRE4 FAQ
1.How can I place an order for TL084ACDRE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TL084ACDRE4 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 TL084ACDRE4 reliable?
The price and inventory of TL084ACDRE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL084ACDRE4 is usually 5 days.
3.What payment methods are accepted for TL084ACDRE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL084ACDRE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL084ACDRE4?
TL084ACDRE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL084ACDRE4 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 TL084ACDRE4?
For technical support, including TL084ACDRE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL084ACDRE4 requirements.
6.How does Aetrix verify that TL084ACDRE4 is sourced from the original manufacturer or authorized distributors?
All TL084ACDRE4 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 TL084ACDRE4 meets industry standards.
7.What is the process for return or replacement of TL084ACDRE4?
All TL084ACDRE4 units undergo pre-shipment inspection (PSI). If there is an issue with TL084ACDRE4, 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 TL084ACDRE4 part is unused and in its original packaging.
Return procedure for TL084ACDRE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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