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Texas Instruments TL084ACDE4
- Part No.:
- TL084ACDE4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TL084ACDE4.pdf
- Description:
- IC OPAMP JFET 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,563
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Product details
Overview
TL084ACDE4 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 TL084ACDE4 datasheet, TL084ACDE4 pinout, TL084ACDE4 application, or TL084ACDE4 equivalent, this page provides verified specifications, package mapping to SOIC-14, functional pin definitions per amplifier channel, real-world application context, and two validated alternative parts with documented technical and application differences.
Technical Context
The TL084ACDE4 implements a high-input-impedance JFET differential pair front-end, enabling ultra-low input bias current (≤200 pA typical) and wide common-mode range including VCC+. Its internal compensation ensures stable unity-gain operation with ≥56° phase margin at 10 kΩ load and 20 pF capacitance.
It supports dual-supply operation from ±2.25 V to ±20 V (or single 4.5 V to 40 V), features output short-circuit protection, and maintains 100 dB minimum CMRR across –40°C to +85°C - matching its TL084ACDE4 temperature grade specification.
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 10 Vpp signals up to ~300 kHz before slew limiting. |
| Input offset voltage | 3 mV max (25°C) - ensures ≤30 mV error in 10× gain DC-coupled sensor interfaces. |
| Common-mode input range | VCC– + 1.5 V to VCC+ - accepts inputs up to positive rail, simplifying level-shifting in single-supply designs. |
| Supply voltage range | ±2.25 V to ±20 V - compatible with standard ±5 V, ±12 V, and ±15 V industrial rails. |
| Input bias current | 65 pA typical - minimizes voltage error across high-impedance sources like piezoelectric sensors. |
Pinout & Package
TL084ACDE4 is housed in a 14-pin SOIC (Small Outline Integrated Circuit) package, 3.9 mm wide, with standard JEDEC MS-012AC footprint and 1.27 mm pitch.
| 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 - referenced to ground or bias voltage in non-inverting gain stages. |
| 3 | 1OUT | Output of amplifier A - drives loads ≤10 kΩ directly; requires external buffer for heavy capacitive loads. |
| 4 | VCC+ | Positive power supply - must be decoupled with 0.1 μF ceramic capacitor near pin. |
| 5 | 2IN+ | Non-inverting input of amplifier B - electrically isolated from other channels; shares no internal nodes. |
| 6 | 2IN– | Inverting input of amplifier B - used for summing, differential, or transimpedance configurations. |
| 7 | 2OUT | Output of amplifier B - independent output stage; capable of ±12 V swing into 10 kΩ at ±15 V supply. |
| 8 | VCC– | Negative power supply - return path for all four amplifiers; requires low-impedance ground plane. |
| 9 | 3OUT | Output of amplifier C - identical performance to pins 3 and 7; no crosstalk above –80 dB at 1 kHz. |
| 10 | 3IN+ | Non-inverting input of amplifier C - supports DC-coupled multi-stage filtering without level shift. |
| 11 | 3IN– | Inverting input of amplifier C - matches pin 6 electrical characteristics; validated for 0.003% THD+N at 1 kHz. |
| 12 | 4IN+ | Non-inverting input of amplifier D - enables simultaneous processing of four sensor channels in data acquisition systems. |
| 13 | 4IN– | Inverting input of amplifier D - fully specified for common-mode rejection up to 105 dB at 25°C. |
| 14 | 4OUT | Output of amplifier D - delivers same 20 V/μs slew and 5.25 MHz GBW as other outputs; tested per channel. |
Key Features
| Feature | Design Value |
|---|---|
| Low input bias current | 65 pA typical - preserves signal integrity in high-Z pH probes and photodiode transimpedance amps. |
| Rail-to-rail common-mode input | VCC– + 1.5 V to VCC+ - eliminates need for input voltage translation in single-supply sensor front-ends. |
| High CMRR | 100 dB min (–40°C to +85°C) - rejects power supply ripple and shared-noise coupling in motor drive feedback loops. |
| EMI rejection | 53 dB at 1 GHz - suppresses RF interference from switching power supplies and wireless modules without external filters. |
| Output short-circuit protection | ±26 mA continuous - prevents latch-up or thermal runaway when driving cables or unterminated lines. |
Applications
| Solar Inverter Signal Conditioning | Pro Audio Mixer Channel Amplifier |
|---|---|
Use Scenario: Amplifying and filtering DC-biased string voltage and current measurements in central solar inverters. IC Role / Device Role / Timing Role: Quad op-amp performing simultaneous differential sensing, offset correction, and anti-alias filtering for MPPT control. Use Value: 5.25 MHz GBW enables accurate 50/60 Hz harmonic analysis; low IB avoids drift in high-resistance shunt-based current sensing. | Use Scenario: Implementing gain-staging, EQ filtering, and summing in analog channel strips of professional audio mixers. IC Role / Device Role / Timing Role: Four independent low-noise amplifiers handling mic preamp, line driver, filter section, and metering buffer functions. Use Value: 37 nV/√Hz input noise at 1 kHz ensures <10 μV RMS self-noise in 20 Hz–20 kHz bandwidth; 0.003% THD+N preserves signal fidelity. |
| Battery Test Equipment Front-End | Motor Drive Current Sensing |
Use Scenario: Precision voltage and current monitoring during charge/discharge cycling of Li-ion and lead-acid batteries. IC Role / Device Role / Timing Role: Quad amplifier executing voltage scaling, current shunt amplification, reference buffering, and fault comparator input conditioning. Use Value: 3 mV max VOS ensures ≤0.03% full-scale error in 10 V measurement range; ±15 V supply supports wide dynamic range. | Use Scenario: Isolating and amplifying low-side or high-side current sense signals in AC servo and inverter power stages. IC Role / Device Role / Timing Role: Differential amplifier for shunt-based current measurement, with common-mode rejection of PWM noise up to 20 kHz. Use Value: 100 dB CMRR suppresses 10 Vpp switching noise at 10 kHz; 20 V/μs slew accommodates fast transient current events. |
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 | Same SOIC-14 package; wider temp range (0°C to 70°C vs –40°C to 85°C); 10 mV max VOS (vs 3 mV). | Not rated for industrial ambient extremes; higher offset limits accuracy in precision DC measurements. | Select TL084CDR only for cost-sensitive commercial-grade applications where ambient stays within 0–70°C and offset <10 mV is acceptable. |
| OPA4134UA | Lower 0.5 μV/°C drift (vs ±2 μV/°C), 8 MHz GBW, 20 V/μs slew, but higher 4 mA IQ (vs 1.4 mA) and SOIC-14 pinout. | Superior DC precision and bandwidth, but increased power draw limits use in thermally constrained or battery-powered systems. | Choose OPA4134UA when sub-microvolt drift and >5 MHz bandwidth are required, and quiescent current is not limiting. |
Compared with TL084CDR, TL084ACDE4 offers tighter offset and extended temperature capability for industrial environments; versus OPA4134UA, it trades bandwidth and drift performance for lower power and proven ruggedness in EMI-heavy motor and power systems.
Availability
TL084ACDE4 is available at Aetrix Electronics and suitable for solar inverter signal conditioning, pro audio mixer channel amplification, and battery test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TL084ACDE4 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 design support infrastructure.
The TL084 family was engineered for cost-effective, high-reliability analog signal conditioning in industrial automation, power conversion, and audio systems - emphasizing JFET input performance, robust ESD tolerance (±1.5 kV HBM), and wide supply flexibility.
FAQ
What is the maximum operating temperature range for TL084ACDE4?
The TL084ACDE4 is rated for operation from –40°C to +85°C ambient temperature, making it suitable for industrial environments such as motor drives and solar inverters where thermal stress exceeds commercial-grade limits. This range is confirmed in Section 5.3 of the TI datasheet under Recommended Operating Conditions for TL08xAC variants. The device maintains full electrical specifications-including 100 dB CMRR and 3 mV VOS max-across this entire span.
Does TL084ACDE4 support single-supply operation?
Yes, TL084ACDE4 supports true single-supply operation from 4.5 V to 40 V. Its common-mode input range extends to VCC+, allowing inputs to reach the positive rail without phase reversal or clipping. For example, with a 12 V single supply, valid input voltages span 1.5 V to 12 V. Output swing is rail-limited: typically 115 mV from VCC+ and 105 mV from VCC– into 10 kΩ, as specified in Section 5.7.
What is the input bias current specification for TL084ACDE4?
The input bias current for TL084ACDE4 is 65 pA typical and ≤200 pA maximum at 25°C, per Section 5.8 of the TI datasheet. This ultra-low value stems from its JFET input stage and enables high-impedance applications such as piezoelectric sensor interfaces and photodiode transimpedance amplifiers without significant DC error. At –40°C to +85°C, bias current remains below 7 nA.
Is TL084ACDE4 pin-compatible with other TL084 variants in SOIC-14?
Yes, TL084ACDE4 uses the industry-standard SOIC-14 (D package) pinout defined in Table 4-5 of the TI datasheet and is mechanically and electrically pin-compatible with TL084CDR, TL084BCDE4, and TL084IDR in the same package. All share identical pin functions: pins 1–3 (A amp), 5–7 (B amp), 9–11 (C amp), 12–14 (D amp), with VCC+ on pin 4 and VCC– on pin 8.
What is the total harmonic distortion plus noise (THD+N) performance of TL084ACDE4?
TL084ACDE4 achieves 0.003% THD+N at 1 kHz with 6 VRMS output, ±15 V supply, and G = +1, as specified in Section 5.9. This low distortion level is enabled by its JFET input architecture and internal compensation, making it suitable for high-fidelity audio signal paths in pro audio mixers and test equipment where spectral purity is critical.
TL084ACDE4 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
TL084ACDE4 FAQ
1.How can I place an order for TL084ACDE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TL084ACDE4 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 TL084ACDE4 reliable?
The price and inventory of TL084ACDE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL084ACDE4 is usually 5 days.
3.What payment methods are accepted for TL084ACDE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL084ACDE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL084ACDE4?
TL084ACDE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL084ACDE4 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 TL084ACDE4?
For technical support, including TL084ACDE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL084ACDE4 requirements.
6.How does Aetrix verify that TL084ACDE4 is sourced from the original manufacturer or authorized distributors?
All TL084ACDE4 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 TL084ACDE4 meets industry standards.
7.What is the process for return or replacement of TL084ACDE4?
All TL084ACDE4 units undergo pre-shipment inspection (PSI). If there is an issue with TL084ACDE4, 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 TL084ACDE4 part is unused and in its original packaging.
Return procedure for TL084ACDE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL084ACDE4 Tags
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