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Texas Instruments TL081BCDR
- Part No.:
- TL081BCDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TL081BCDR.pdf
- Description:
- IC OPAMP JFET 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,434
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Product details
Overview
TL081BCDR from Texas Instruments is a single-channel JFET-input operational amplifier optimized for precision DC-coupled and wideband AC applications. It delivers 20 V/μs slew rate, 5.25 MHz gain-bandwidth product, ±1 mV typical input offset voltage, 37 nV/√Hz input voltage noise at 1 kHz, 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 high CMRR are critical.
For engineers reviewing the TL081BCDR datasheet, TL081BCDR pinout, TL081BCDR application, or TL081BCDR equivalent, key selection criteria include input bias current (±1 pA typ), common-mode input range extending to VCC+, output short-circuit protection, and thermal performance in SOIC-8 packaging for industrial signal conditioning.
Technical Context
The TL081BCDR uses a dual-JFET input stage enabling ultra-low input bias current and rail-to-rail common-mode input capability up to VCC+. Its internal compensation ensures stable unity-gain operation with ≥56° phase margin into 20 pF capacitive loads.
It features integrated EMI/RF filters and 1.5 kV HBM ESD rating, supporting robust operation in noisy environments such as motor drive feedback loops and UPS control circuits without external filtering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Slew Rate | 20 V/μs - enables accurate reproduction of fast transients in audio and test equipment signals |
| Gain-Bandwidth Product | 5.25 MHz - supports stable closed-loop gain up to ~50 at 100 kHz for sensor amplification |
| Input Offset Voltage | ±1 mV (typ) - reduces DC error in precision instrumentation and calibration circuits |
| Input Voltage Noise | 37 nV/√Hz at 1 kHz - preserves signal integrity in low-level audio preamplifier stages |
| Common-Mode Input Range | Extends to VCC+ - allows direct sensing of signals referenced to positive supply in single-supply configurations |
| Supply Voltage Range | ±2.25 V to ±20 V (4.5 V to 40 V) - supports dual-rail and wide-input-range industrial power domains |
| Quiescent Current | 940 μA/ch (typ) - enables low-power operation in always-on monitoring systems |
Pinout & Package
TL081BCDR is packaged in an 8-pin SOIC (D package) with standard industry pinout and surface-mount compatibility. Thermal resistance RθJA is 158.8°C/W, supporting reliable operation at ambient temperatures up to +125°C when properly heatsinked.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | NC | No connection - must be left unconnected per datasheet; not internally bonded |
| 2 | IN− | Inverting input - accepts feedback network for stable closed-loop gain configuration |
| 3 | IN+ | Non-inverting input - provides high-impedance signal entry point for sensor interfaces |
| 4 | VCC− | Negative supply rail - must be decoupled with 0.1 μF ceramic capacitor near pin |
| 5 | NC | No connection - floating; no internal function or bond wire |
| 6 | OUT | Amplified output - drives loads up to 2 kΩ with ≤210 mV headroom from positive rail |
| 7 | VCC+ | Positive supply rail - requires local 0.1 μF ceramic decoupling for stability |
| 8 | NC | No connection - unused pad; no electrical or thermal function |
Key Features
| Feature | Design Value |
|---|---|
| Low Input Bias Current | ±1 pA typical - minimizes voltage error across high-impedance source networks (e.g., piezoelectric sensors) |
| Output Short-Circuit Protection | ±26 mA continuous limit - prevents latch-up or destruction during accidental load faults |
| EMI/RF Filter Integration | 53 dB rejection at 1 GHz - eliminates need for external RF chokes in switch-mode power supply feedback paths |
| Wide Common-Mode Range | Includes VCC+ - enables direct interface to signals at or above positive rail (e.g., current-sense shunt monitoring) |
| High CMRR | 105 dB (typ) - rejects power supply ripple and ground noise in differential measurement front-ends |
Applications
| Solar Energy Inverters | Pro Audio Mixers |
|---|---|
Use Scenario: Monitoring string-level DC voltage and current in central solar inverters under variable irradiance. IC Role / Device Role / Timing Role: Precision DC-coupled amplifier in isolated current-sense and voltage-scaling front-end. Use Value: ±1 mV offset and 105 dB CMRR ensure <0.1% measurement error despite high common-mode bus noise. | Use Scenario: Low-noise microphone preamplification and channel summing in analog mixing consoles. IC Role / Device Role / Timing Role: First-stage gain block with JFET input preserving dynamic range and minimizing distortion. Use Value: 37 nV/√Hz noise density and 0.00012% THD+N maintain studio-grade signal fidelity. |
| Battery Test Equipment | Single-Phase Online UPS |
Use Scenario: High-accuracy voltage and current profiling during charge/discharge cycling of Li-ion cells. IC Role / Device Role / Timing Role: Signal conditioner for 16-bit ADC inputs measuring cell terminal voltage with <10 μV resolution. Use Value: ±2 μV/°C drift and rail-to-rail input enable stable sub-millivolt accuracy across –40°C to +85°C operating range. | Use Scenario: Feedback control of inverter output voltage regulation and waveform shaping in line-interactive UPS units. IC Role / Device Role / Timing Role: Error amplifier in voltage-controlled oscillator (VCO) loop compensating for grid sag/swell events. Use Value: 20 V/μs slew rate and 5.25 MHz GBW support fast transient response to load steps within <1 μs settling time. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL081CDR | Higher input offset voltage (±3 mV max vs ±1 mV typ), wider full-range temp spec (0°C to 70°C vs –40°C to 125°C) | Cost-sensitive commercial-grade designs where ±3 mV offset is acceptable | Select TL081CDR only if temperature range and offset tolerance allow relaxed specifications |
| OPA1671IDR | Lower noise (4.5 nV/√Hz), rail-to-rail output, higher quiescent current (1.6 mA), CMOS input (vs JFET) | Ultra-low-noise audio paths requiring RRO and lower distortion than TL081BCDR can deliver | Choose OPA1671IDR when noise floor and output swing are prioritized over input bias current and cost |
Compared with TL081CDR and OPA1671IDR, TL081BCDR uniquely balances ultra-low input bias current (±1 pA), extended temperature operation (–40°C to 125°C), and proven reliability in industrial power electronics-making it optimal for high-impedance, wide-temp sensor interfaces where JFET input characteristics are essential.
Availability
TL081BCDR is available at Aetrix Electronics and suitable for solar energy inverters, pro audio mixers, and battery test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TL081BCDR 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 delivering analog and embedded processing solutions for industrial, automotive, and communications markets.
The TL081 family is part of TI's precision op-amp portfolio designed for high-fidelity signal conditioning in cost-sensitive industrial and audio applications where JFET input performance is required.
FAQ
What is the maximum operating temperature range for TL081BCDR?
The TL081BCDR is rated for operation from –40°C to +125°C, matching the TL081H grade specification. This extended temperature range supports deployment in industrial motor drives, solar inverters, and outdoor UPS systems where ambient conditions exceed commercial-grade limits. The device maintains specified offset drift (±2 µV/°C) and CMRR (≥95 dB) across this full range.
Does TL081BCDR support single-supply operation?
Yes, TL081BCDR supports true single-supply operation with common-mode input voltage range extending to VCC+. When powered from +5 V to +40 V (with VCC– grounded), the input can accept signals from 0 V up to VCC+, enabling direct interfacing with sensors and DACs referenced to the positive rail. Output swing remains within 210 mV of VCC+ and 215 mV of ground under 10 kΩ load.
What is the input bias current specification for TL081BCDR?
The TL081BCDR exhibits ±1 pA typical input bias current at 25°C, with a maximum of ±120 pA over –40°C to +125°C. This ultra-low value results from its dual-JFET input stage and enables use with high-impedance sources such as photodiodes, piezoelectric transducers, and RC filter networks without significant voltage error or time-constant degradation.
Is TL081BCDR pin-compatible with other TL081 variants?
Yes, TL081BCDR uses the standard 8-pin SOIC (D package) footprint and pinout defined for all TL081x devices, including TL081CDR, TL081ACDR, and TL081H variants. Pin functions (IN−, IN+, OUT, VCC±, NC) are identical, allowing drop-in replacement where electrical specs meet design requirements-though temperature range and offset voltage differ between grades.
What decoupling is recommended for TL081BCDR power pins?
Texas Instruments recommends placing a 0.1 µF ceramic capacitor between VCC+ (Pin 7) and VCC– (Pin 4), located as close as possible to the device. For systems with high-frequency noise or switching regulators, adding a 10 µF tantalum or aluminum electrolytic capacitor in parallel improves low-frequency supply stability. Ground plane layout should minimize inductance in the decoupling loop.
TL081BCDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- 2 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
TL081BCDR FAQ
1.How can I place an order for TL081BCDR through Aetrix?
Please submit a Request for Quotation (RFQ) for TL081BCDR 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 TL081BCDR reliable?
The price and inventory of TL081BCDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL081BCDR is usually 5 days.
3.What payment methods are accepted for TL081BCDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL081BCDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL081BCDR?
TL081BCDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL081BCDR 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 TL081BCDR?
For technical support, including TL081BCDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL081BCDR requirements.
6.How does Aetrix verify that TL081BCDR is sourced from the original manufacturer or authorized distributors?
All TL081BCDR 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 TL081BCDR meets industry standards.
7.What is the process for return or replacement of TL081BCDR?
All TL081BCDR units undergo pre-shipment inspection (PSI). If there is an issue with TL081BCDR, 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 TL081BCDR part is unused and in its original packaging.
Return procedure for TL081BCDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL081BCDR Tags
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