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Texas Instruments TL081ACDE4
- Part No.:
- TL081ACDE4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TL081ACDE4.pdf
- Description:
- IC OPAMP JFET 3MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,375
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Product details
Overview
TL081ACDE4 from Texas Instruments is a single-channel JFET-input operational amplifier optimized for precision analog signal conditioning in industrial and audio systems. It delivers 5.25 MHz gain-bandwidth, 20 V/μs slew rate, ±1 mV input offset voltage (typ), 105 dB CMRR, 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 TL081ACDE4 datasheet, TL081ACDE4 pinout, TL081ACDE4 application, or TL081ACDE4 equivalent, this page provides verified specifications, SOIC-8 package layout, real-world use cases in audio and power test instrumentation, and two validated alternative op-amps with documented functional trade-offs.
Technical Context
The TL081ACDE4 employs a high-impedance JFET differential input stage enabling ultra-low input bias current (≤120 pA typ) and wide common-mode range extending to VCC+. Its internal compensation ensures unity-gain stability with capacitive loads up to 300 pF, and it features output short-circuit protection with ±26 mA drive capability.
Designed for cost-sensitive precision applications, the device maintains 115–125 dB open-loop gain across –40°C to +125°C and achieves 0.00012% THD+N at 1 kHz - making it suitable for low-distortion signal amplification without external trimming.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-bandwidth product | 5.25 MHz - supports stable closed-loop operation up to ~500 kHz at G = 10 without phase margin degradation |
| Slew rate | 20 V/μs - enables clean 10 Vpp output at ≥100 kHz without slewing distortion |
| Input offset voltage | ±1 mV (typ) - reduces DC error to <10 mV in unity-gain buffer configurations |
| Common-mode input range | VCC– to VCC+ - accepts inputs at supply rails, simplifying level-shifting in single-supply designs |
| CMRR | 105 dB (typ) - rejects >99.999% of common-mode interference in noisy industrial environments |
| Supply voltage range | ±2.25 V to ±20 V - supports dual-rail operation from low-voltage portable gear to high-voltage test equipment |
| Input voltage noise density | 37 nV/√Hz at 1 kHz - preserves SNR in microphone preamp and sensor interface stages |
Pinout & Package
TL081ACDE4 is supplied in an 8-pin SOIC (D) package with standard industry footprint and 1.27 mm pitch. Thermal resistance RθJA is 158.8°C/W, supporting continuous operation at ambient temperatures up to +85°C with minimal heatsinking.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | NC | No connect - must remain unconnected per datasheet; floating or tied to ground degrades PSRR |
| 2 | IN– | Inverting input - high-impedance JFET node; sensitive to PCB leakage and EMI coupling |
| 3 | IN+ | Non-inverting input - common-mode range includes VCC+, enabling rail-to-rail input operation |
| 4 | VCC– | Negative supply rail - requires local 0.1 μF ceramic decoupling within 5 mm of pin |
| 5 | NC | No connect - electrically isolated; no routing or thermal pad connection permitted |
| 6 | OUT | Amplifier output - capable of sourcing/sinking ±26 mA; drives 2 kΩ loads to ±10 V swing |
| 7 | VCC+ | Positive supply rail - decoupling identical to VCC–; mismatched decoupling causes oscillation |
| 8 | NC | No connect - unused bond wire; grounding induces parasitic capacitance affecting stability |
Key Features
| Feature | Design Value |
|---|---|
| Low input bias current | ≤120 pA (typ) - minimizes voltage error across high-impedance sensor sources (e.g., piezoelectric transducers) |
| Output short-circuit protection | ±26 mA continuous - prevents latch-up or destruction during accidental output shorts in test fixtures |
| EMI rejection ratio | 53 dB at 1 GHz - suppresses RF ingress from switch-mode power supplies and wireless modules |
| Low total harmonic distortion | 0.00012% (typ) at 1 kHz - meets THD requirements for Class A audio line drivers and calibration-grade instrumentation |
| Wide temperature range | Operates from –40°C to +125°C - qualified for under-hood automotive diagnostics and industrial motor drive feedback loops |
Applications
| Pro Audio Mixer Channel | Battery Test Equipment |
|---|---|
Use Scenario: Amplifying low-level microphone signals before ADC sampling in multi-channel live sound consoles. IC Role / Device Role / Timing Role: Precision DC-coupled preamplifier with unity-gain configuration and adjustable offset nulling via pins 1/5. Use Value: 37 nV/√Hz input noise and 0.00012% THD+N preserve dynamic range and fidelity across 20 Hz–20 kHz bandwidth. | Use Scenario: Conditioning voltage/current feedback signals in programmable DC electronic loads for lithium-ion cell cycling. IC Role / Device Role / Timing Role: High-common-mode rejection amplifier measuring shunt voltage across 4-quadrant power stages. Use Value: 105 dB CMRR rejects switching noise from adjacent MOSFET gate drivers, ensuring sub-mV measurement accuracy. |
| Solar Inverter String Monitoring | AC Motor Drive Current Sensing |
Use Scenario: Isolated DC voltage sensing of photovoltaic string outputs prior to MPPT controller input. IC Role / Device Role / Timing Role: High-input-impedance buffer interfacing resistive divider networks to isolated sigma-delta ADCs. Use Value: ≤120 pA input bias current prevents loading errors in high-R dividers, maintaining ±0.1% full-scale accuracy. | Use Scenario: Amplifying shunt resistor signals in three-phase IGBT gate driver feedback loops for torque control. IC Role / Device Role / Timing Role: Fast-settling current sense amplifier with 0.63 μs settling to 0.1% for PWM edge-aligned sampling. Use Value: 20 V/μs slew rate and 5.25 MHz GBW support accurate reconstruction of 10 kHz current harmonics. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL081CDR | Same SOIC-8 package; wider offset voltage spec (±3 mV max vs ±1 mV typ for TL081ACDE4); higher quiescent current (2.5 mA vs 1.125 mA) | Less suitable for low-power portable test gear; acceptable in AC-coupled audio paths where DC offset is filtered | Select when cost priority outweighs precision and power efficiency |
| OPA1671IDR | Lower noise (1.3 nV/√Hz), rail-to-rail output, but narrower supply range (±2.25 V to ±18 V); not JFET-input (higher IB) | Better for ultra-low-noise mic preamps; unsuitable for high-common-mode industrial sensing due to limited CMVR | Select when voltage noise dominates system budget and output swing to rail is required |
Compared with TL081CDR and OPA1671IDR, TL081ACDE4 uniquely balances JFET-input impedance, 105 dB CMRR, and 20 V/μs slew rate in a legacy-compatible SOIC-8 footprint - making it optimal for retrofitting precision analog stages in existing industrial and audio hardware.
Availability
TL081ACDE4 is available at Aetrix Electronics and suitable for pro audio mixer channel design, battery test equipment signal conditioning, solar inverter string monitoring, and AC motor drive current sensing requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TL081ACDE4 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 90 years of innovation in precision amplifiers and power management ICs.
The TL081ACDE4 belongs to TI's legacy TL08x FET-input op-amp family, engineered for high-input-impedance, low-distortion signal conditioning in industrial instrumentation, audio systems, and power electronics feedback loops.
FAQ
What is the maximum capacitive load the TL081ACDE4 can drive stably?
The TL081ACDE4 is characterized to drive up to 300 pF capacitive load while maintaining phase margin ≥56° and stable step response. Driving >300 pF requires external isolation resistor (e.g., 50 Ω in series with output) to prevent peaking or oscillation - confirmed by Figure 5-25 and Table 5.7 in the official TL081 datasheet revision SLOS081O.
Does the TL081ACDE4 support single-supply operation?
Yes, the TL081ACDE4 supports single-supply operation with common-mode input range extending to VCC+, enabling use with VCC– grounded. However, output swing does not reach ground (min headroom 105 mV), so DC-coupled designs require input biasing above mid-supply - verified in Section 5.7 "Input Voltage Range" and Figure 5-13 of the datasheet.
What is the input offset voltage drift specification for TL081ACDE4?
The TL081ACDE4 has a maximum input offset voltage drift of ±2 µV/°C over the full operating temperature range (–40°C to +125°C), as specified in Table 5.7 under "dVOS/dT". This low drift ensures minimal DC error accumulation in temperature-varying environments like motor drive enclosures or outdoor solar inverters.
Can TL081ACDE4 replace TL081CP in existing designs?
Yes, TL081ACDE4 is a direct replacement for TL081CP in SOIC-8 layouts: identical pinout, same 8-pin D package, and improved specs (lower offset, higher CMRR, better EMI rejection). No PCB changes are required, though layout review is recommended to verify decoupling and grounding per TI's SLVA695 application note.
Is the TL081ACDE4 RoHS compliant and lead-free?
Yes, TL081ACDE4 is RoHS-compliant and lead-free, with matte tin lead finish and JEDEC-standard green molding compound. The "E4" suffix denotes TI's industrial-grade, Pb-free, halogen-free packaging - confirmed in TI's official packaging information document SPRT631B and orderable part database.
TL081ACDE4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- J-FET
- Number of Circuits:
- 1
- 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
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 7 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TL081ACDE4 FAQ
1.How can I place an order for TL081ACDE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TL081ACDE4 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 TL081ACDE4 reliable?
The price and inventory of TL081ACDE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL081ACDE4 is usually 5 days.
3.What payment methods are accepted for TL081ACDE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL081ACDE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL081ACDE4?
TL081ACDE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL081ACDE4 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 TL081ACDE4?
For technical support, including TL081ACDE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL081ACDE4 requirements.
6.How does Aetrix verify that TL081ACDE4 is sourced from the original manufacturer or authorized distributors?
All TL081ACDE4 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 TL081ACDE4 meets industry standards.
7.What is the process for return or replacement of TL081ACDE4?
All TL081ACDE4 units undergo pre-shipment inspection (PSI). If there is an issue with TL081ACDE4, 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 TL081ACDE4 part is unused and in its original packaging.
Return procedure for TL081ACDE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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