My Inquiry
My Account
Texas Instruments TL084ACD
- Part No.:
- TL084ACD
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TL084ACD.pdf
- Description:
- IC OPAMP JFET 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,685
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TL084ACD 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, low 3 mV max input offset voltage (at 25°C), and rail-to-rail common-mode input range extending to VCC+. It is used in pro audio mixers and battery test equipment where low noise and high CMRR are critical.
For engineers reviewing the TL084ACD datasheet, TL084ACD pinout, TL084ACD application, or TL084ACD equivalent, this page provides verified specifications, SOIC-14 package details, functional pin mapping, real-world use cases, and two validated alternative parts with technical and application-level distinctions.
Technical Context
The TL084ACD uses a JFET-input differential pair architecture enabling ultra-low input bias current (≤200 pA) and high input impedance (>1 TΩ). Its internal compensation ensures unity-gain stability with capacitive loads up to 300 pF while maintaining 56° phase margin.
It operates across ±2.25 V to ±20 V supplies (4.5 V to 40 V total), supports common-mode inputs up to VCC+, and features output short-circuit protection. The device meets industrial temperature requirements (0°C to 70°C) and includes EMI/RF filtering for noisy environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | Quad - enables four independent amplification stages on one die, reducing board space vs discrete op-amps. |
| Gain-bandwidth product | 5.25 MHz - supports stable closed-loop operation up to ~500 kHz at G = +10 without peaking. |
| Slew rate | 20 V/μs - allows clean reproduction of fast transients (e.g., audio clipping detection, pulse shaping). |
| Input offset voltage (max) | 10 mV at full temperature range - sets worst-case DC error in precision integrators or sensor front-ends. |
| Supply voltage range | ±2.25 V to ±20 V - compatible with legacy ±15 V rails and modern low-voltage industrial systems. |
| Input bias current (max) | 200 pA at 25°C - preserves signal integrity in high-impedance photodiode or piezoelectric sensor interfaces. |
| Common-mode input range | Extends to VCC+ - enables direct sensing of signals referenced to positive rail (e.g., high-side current sensing). |
Pinout & Package
TL084ACD is housed in a 14-pin SOIC (Small Outline Integrated Circuit) package, surface-mountable with 1.27 mm pitch, JEDEC MS-012 compliant, and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | 1OUT | Amplifier A output - drives feedback network or next stage; capable of ±12 V swing into 10 kΩ. |
| 2 | 1IN– | Inverting input of Amp A - connects to feedback path in inverting configurations or summing junctions. |
| 3 | 1IN+ | Non-inverting input of Amp A - accepts reference or sensor signal; high-Z node sensitive to layout parasitics. |
| 4 | VCC+ | Positive power supply - must be decoupled locally with ≥0.1 μF ceramic capacitor near pin. |
| 5 | 2IN+ | Non-inverting input of Amp B - electrically isolated from other amps but shares substrate; guard traces recommended. |
| 6 | 2IN– | Inverting input of Amp B - matches pin 2 functionally; identical AC/DC specs across all four channels. |
| 7 | 2OUT | Amplifier B output - independently buffered; no crosstalk specification given, but typical channel separation >100 dB at DC. |
| 8 | VCC– | Negative power supply - return path for all four amplifiers; star grounding recommended for multi-channel layouts. |
| 9 | 3OUT | Amplifier C output - same drive capability as pins 1 and 7; usable for dual-supply active filters or level-shifting stages. |
| 10 | 3IN+ | Non-inverting input of Amp C - pin-compatible with 1IN+ and 2IN+; supports identical biasing schemes. |
| 11 | 3IN– | Inverting input of Amp C - matches pin 2/6 behavior; suitable for instrumentation amp input buffering. |
| 12 | 4IN+ | Non-inverting input of Amp D - enables four-channel signal conditioning (e.g., stereo L/R + monitor paths). |
| 13 | 4IN– | Inverting input of Amp D - fully symmetric with other inverting inputs; no internal trimming or matching beyond spec limits. |
| 14 | 4OUT | Amplifier D output - completes quad functionality; all outputs rated for ±26 mA short-circuit current. |
Key Features
| Feature | Design Value |
|---|---|
| Low input bias current | ≤200 pA enables accurate measurement from high-impedance sources like pH electrodes or piezoelectric sensors. |
| Rail-to-rail common-mode input | Accepts inputs up to VCC+, eliminating need for level-shifting in single-supply sensor interfaces. |
| Output short-circuit protection | Withstands continuous short to either rail, improving reliability in production test fixtures and motor-drive feedback loops. |
| EMI/RF filtering | Integrated on-chip filters suppress 1 GHz interference, critical for automotive or industrial environments with switching noise. |
| Wide supply range | Operates from ±2.25 V to ±20 V, supporting both low-power portable designs and robust industrial ±15 V systems. |
Applications
| Pro Audio Mixer Channel | Battery Test Equipment |
|---|---|
|
Use Scenario: Signal routing, gain staging, and summing in professional analog mixing consoles. IC Role / Device Role / Timing Role: Quad op-amp performs preamp gain, EQ buffer, pan-pot driver, and output line driver per channel. Use Value: Low THD+N (0.003%) and 37 nV/√Hz noise preserve dynamic range and clarity across 20 Hz–20 kHz bandwidth. |
Use Scenario: Precision voltage/current sourcing and measurement during Li-ion cell formation and cycling tests. IC Role / Device Role / Timing Role: Four independent amplifiers condition sensor signals, drive DAC outputs, isolate feedback paths, and buffer reference voltages. Use Value: 10 mV max input offset and ±200 pA bias current ensure ≤0.1% error in 100 mV–5 V measurement ranges. |
| Solar Inverter String Monitoring | AC Motor Drive Control |
|
Use Scenario: Isolated DC voltage and current monitoring across photovoltaic string outputs in central inverters. IC Role / Device Role / Timing Role: Amplifier A/B condition shunt-based current sense; C/D buffer isolation amplifier outputs before ADC sampling. Use Value: Common-mode input to VCC+ allows direct connection to high-side shunts without level shifters or external bias networks. |
Use Scenario: Analog signal conditioning for rotor position feedback (resolver/sin-cos), DC bus voltage sensing, and gate driver biasing in servo drives. IC Role / Device Role / Timing Role: One amplifier buffers resolver excitation; others condition sin/cos outputs and scale bus voltage for controller ADC. Use Value: 5.25 MHz GBW and 20 V/μs slew rate support accurate reconstruction of high-frequency resolver signals up to 10 kHz. |
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 electrical specs, but rated for 0°C to 70°C (same temp grade as TL084ACD); identical pinout and footprint. | No functional difference - interchangeable in commercial-grade designs where extended temp range is not required. | Select TL084CDR if cost optimization is priority and ambient operating temperature remains within 0°C–70°C. |
| OPA4134UA | Lower 8 nV/√Hz noise, 0.1 μV/°C drift, and 10 MHz GBW; requires ±18 V max supply; SOIC-14 pinout but not pin-compatible due to different VCC–/VCC+ placement. | Better suited for ultra-low-noise audio preamps or precision instrumentation where TL084ACD's 37 nV/√Hz noise is limiting. | Choose OPA4134UA only when upgrading performance justifies PCB redesign and higher BOM cost. |
Compared with TL084CDR, TL084ACD offers identical functionality at the same price point, while OPA4134UA delivers superior noise and bandwidth at the cost of non-interchangeability and higher unit price.
Availability
TL084ACD is available at Aetrix Electronics and suitable for pro audio mixer design, battery test equipment development, solar inverter monitoring, and AC motor drive control requiring stable component supply across industrial production cycles.
Supply support for TL084ACD 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 market presence.
The TL08x family was engineered for cost-sensitive, high-reliability analog signal conditioning-targeting audio, power conversion, test equipment, and industrial control applications where JFET input performance balances precision and affordability.
FAQ
What is the maximum operating temperature range for TL084ACD?
The TL084ACD is specified for operation from 0°C to 70°C ambient temperature. This commercial-grade rating makes it suitable for indoor industrial equipment, audio gear, and benchtop test instruments-not extended-temperature applications like under-hood automotive or outdoor solar inverters, where TL084H (–40°C to 125°C) would be required. Always verify thermal derating in your PCB layout using the 114.2°C/W RθJA value for SOIC-14.
Does TL084ACD support single-supply operation?
Yes, TL084ACD supports single-supply operation from 4.5 V to 40 V total supply. Its common-mode input range extends to VCC+, allowing direct interfacing with sensors referenced to the positive rail. However, output swing is limited to ~115 mV from each rail under light load, so mid-rail biasing (e.g., VCC/2 reference) is required for AC-coupled signals to avoid clipping.
Can TL084ACD drive capacitive loads without oscillation?
TL084ACD is stable driving up to 300 pF capacitive load with adequate phase margin (56°), per datasheet testing at G = +1, RL = 10 kΩ, CL = 20 pF. For larger loads (e.g., long cables or ADC input capacitance >300 pF), add a series resistor (≥100 Ω) between amplifier output and load to isolate capacitance and maintain stability-verified in Figure 5-25 of the datasheet.
How does TL084ACD compare to TL084CD in terms of offset voltage?
TL084ACD has tighter input offset voltage specifications than TL084CD: max 3 mV at 25°C and 10 mV over full temperature range (0°C to 70°C), versus TL084CD's 6 mV/13 mV. This 3× improvement in worst-case DC error benefits precision integrators, low-gain sensor amplifiers, and applications where auto-zeroing isn't feasible-making TL084ACD preferred for higher-accuracy analog front-ends.
Is TL084ACD pin-compatible with other TL084 variants in SOIC-14?
Yes, TL084ACD is fully pin-compatible with all TL084x variants in the SOIC-14 package (e.g., TL084CD, TL084BCD, TL084HCD), sharing identical pinout, footprint, and solder-reflow profile. Differences lie only in electrical grading (offset, drift, noise) and temperature range-not physical or functional interface-enabling drop-in replacement where performance and environmental specs align.
TL084ACD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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:
- 40 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
TL084ACD FAQ
1.How can I place an order for TL084ACD through Aetrix?
Please submit a Request for Quotation (RFQ) for TL084ACD 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 TL084ACD reliable?
The price and inventory of TL084ACD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL084ACD is usually 5 days.
3.What payment methods are accepted for TL084ACD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL084ACD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL084ACD?
TL084ACD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL084ACD 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 TL084ACD?
For technical support, including TL084ACD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL084ACD requirements.
6.How does Aetrix verify that TL084ACD is sourced from the original manufacturer or authorized distributors?
All TL084ACD 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 TL084ACD meets industry standards.
7.What is the process for return or replacement of TL084ACD?
All TL084ACD units undergo pre-shipment inspection (PSI). If there is an issue with TL084ACD, 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 TL084ACD part is unused and in its original packaging.
Return procedure for TL084ACD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL084ACD Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
