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Texas Instruments TL081IP
- Part No.:
- TL081IP
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
TL081IP.pdf
- Description:
- IC OPAMP JFET 1 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:161
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Product details
Overview
TL081IP from Texas Instruments is a single-channel JFET-input operational amplifier designed for precision analog signal conditioning in industrial and audio systems. It delivers 20 V/μs slew rate, ±1 mV typical input offset voltage, 5.25 MHz gain-bandwidth product, and operates from ±2.25 V to ±20 V supplies. Its rail-to-rail common-mode input range (including VCC+) supports high-side sensing in solar inverter front-ends.
For engineers reviewing the TL081IP datasheet, TL081IP pinout, TL081IP application, or TL081IP equivalent, this page provides verified specifications, SOIC-8 package layout, FET-input advantages over bipolar op-amps, and direct alternatives for cost-sensitive, wide-supply, low-noise amplification tasks.
Technical Context
The TL081IP uses a JFET differential input stage enabling ultra-low input bias current (±1 pA typ) and high input impedance (>1 TΩ), critical for sensor interfacing and high-Z source amplification. Its internal compensation ensures unity-gain stability with 56° phase margin at 10 kΩ load and 20 pF capacitance.
It features output short-circuit protection, EMI/RF filtering, and operation across –40°C to 85°C (I-grade). The device maintains 118 dB open-loop gain and 100 dB CMRR at 40 V supply, supporting accurate DC-coupled gain stages in motor drive feedback loops.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Slew Rate | 20 V/μs - enables clean 10 Vpp signal reproduction up to ~300 kHz without slewing distortion |
| Input Offset Voltage | ±1 mV (typ) - reduces DC error in precision instrumentation amplifiers and sensor bridges |
| Gain-Bandwidth Product | 5.25 MHz - supports stable closed-loop gains up to ~50 at 100 kHz | Input Bias Current | ±1 pA (typ) - minimizes voltage drop across high-impedance sources like photodiodes or piezoelectric sensors |
| Supply Voltage Range | ±2.25 V to ±20 V (4.5 V to 40 V) - accommodates dual-rail industrial control and single-supply battery-powered designs |
| Common-Mode Input Range | Includes VCC+ - allows direct sensing of signals referenced to positive rail, e.g., high-side current monitoring |
| Input Voltage Noise | 37 nV/√Hz at 1 kHz - suitable for low-frequency audio preamplification and pro-audio mixer inputs |
Pinout & Package
TL081IP is supplied in an 8-pin SOIC (Small Outline Integrated Circuit) package, surface-mount compatible with standard reflow profiles and IPC-7351B land patterns.
| 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 - accepts feedback network for stable closed-loop configurations (e.g., inverting amplifier) |
| 3 | IN+ | Non-inverting input - used for unity-gain buffers, active filters, and high-impedance signal routing |
| 4 | VCC– | Negative supply rail - requires local 0.1 μF ceramic decoupling adjacent to pin |
| 5 | NC | No connect - electrically isolated; PCB trace must be omitted or removed |
| 6 | OUT | Amplifier output - drives loads ≥2 kΩ directly; capacitive loads >300 pF require isolation resistor |
| 7 | VCC+ | Positive supply rail - requires local 0.1 μF ceramic decoupling adjacent to pin |
| 8 | NC | No connect - no internal connection; must not be soldered or routed |
Key Features
| Feature | Design Value |
|---|---|
| FET input stage | Enables <1 pA input bias current - preserves signal integrity from megohm-level sensors and charge-storage circuits |
| Output short-circuit protection | Withstands indefinite short to either rail - eliminates need for external current-limiting resistors in test equipment interfaces |
| Integrated EMI/RF filters | Rejects 1 GHz interference at 53 dB - improves immunity in noisy motor drive and UPS environments |
| Wide common-mode range | Accepts inputs up to VCC+ - simplifies level-shifting in solar string monitor ICs and battery cell voltage measurement |
| Low THD+N | 0.00012% at 1 kHz - meets pro-audio mixer line-stage requirements without post-amplifier correction |
Applications
| Solar String Monitoring | Pro Audio Line Amplifier |
|---|---|
|
Use Scenario: Measuring individual PV module voltages in series-connected strings under partial shading. IC Role / Device Role / Timing Role: Precision DC-coupled buffer and difference amplifier front-end for ADC input. Use Value: Rail-inclusive common-mode input captures full-string voltage swing; low offset ensures <10 mV measurement accuracy across temperature. |
Use Scenario: Boosting microphone or instrument-level signals to line-level before analog-to-digital conversion in digital mixers. IC Role / Device Role / Timing Role: Low-noise, unity-gain buffer and first-stage gain block in analog signal chain. Use Value: 37 nV/√Hz noise floor and 0.00012% THD+N preserve dynamic range and harmonic fidelity in 24-bit audio systems. |
| AC Motor Drive Feedback | Battery Test Equipment |
|
Use Scenario: Isolating and scaling current-sense resistor voltage in IGBT gate driver feedback paths. IC Role / Device Role / Timing Role: High-CMRR differential amplifier for shunt-based current measurement. Use Value: 100 dB CMRR rejects switching noise from 20 kHz PWM; 20 V/μs slew handles fast transient currents without phase lag. |
Use Scenario: Conditioning voltage and current feedback signals during controlled charge/discharge cycling of Li-ion cells. IC Role / Device Role / Timing Role: Precision gain stage and offset-compensated integrator in programmable load/sink circuits. Use Value: ±1 mV offset and ±2 μV/°C drift ensure <0.1% voltage accuracy over –20°C to +70°C ambient test chamber conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL081CP | Same SOIC-8 package and pinout; wider operating temperature (0°C to 70°C vs –40°C to 85°C); higher max offset (10 mV vs 4 mV) | Lower-cost option for commercial-grade consumer audio or non-critical industrial controls | Select TL081CP only when extended temperature range and tighter offset specs are unnecessary |
| OPA1671IDR | CMOS input (0.3 pA bias), lower noise (3.2 nV/√Hz), rail-to-rail output, but narrower supply (±2.25 V to ±18 V) and no VCC+-inclusive input | Better suited for ultra-low-noise portable audio or medical sensor front-ends where rail-to-rail output is required | Choose OPA1671IDR when noise performance outweighs common-mode input flexibility and cost sensitivity |
Compared with TL081CP, TL081IP offers superior temperature stability and lower offset for industrial use; versus OPA1671IDR, it trades noise performance for robust high-voltage input capability and broader supply tolerance-critical in solar and UPS power electronics.
Availability
TL081IP is available at Aetrix Electronics and suitable for solar energy inverters, motor drive feedback systems, and pro audio signal conditioning requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TL081IP 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 TL081IP belongs to TI's legacy FET-input op-amp family, engineered for cost-sensitive yet robust analog signal conditioning in harsh environments-including solar, motor control, and professional audio equipment.
FAQ
What is the maximum supply voltage for TL081IP?
The TL081IP supports a total supply voltage (VCC+ – VCC–) up to 40 V, corresponding to ±20 V dual supply or 4.5 V to 40 V single supply operation. Absolute maximum ratings specify 42 V for non-NS/PS packages, but recommended operation limits to 40 V for reliability and parameter consistency across temperature.
Does TL081IP support rail-to-rail input?
TL081IP supports rail-to-rail *common-mode input*, including the positive supply rail (VCC+). However, its output swing is not rail-to-rail-it typically delivers within 115 mV of VCC+ and 105 mV of VCC– at 10 kΩ load. This makes TL081IP ideal for high-side sensing but unsuitable for applications requiring full output voltage swing.
Can TL081IP drive capacitive loads?
TL081IP is specified to safely drive up to 300 pF capacitive load without oscillation. For larger loads (e.g., cable-driven outputs), a series isolation resistor (typically 10–100 Ω) between TL081IP output and the capacitor is required to maintain phase margin above 56° and prevent peaking or instability.
How does TL081IP differ from TL081CP?
TL081IP is rated for –40°C to +85°C operation with tighter initial offset (±1 mV typ vs ±3 mV typ) and lower drift (±2 μV/°C vs ±18 μV/°C). TL081CP targets commercial temperature range (0°C to 70°C) and higher-cost-sensitive applications where extended thermal performance is not required.
Is TL081IP pin-compatible with other TL081 variants?
Yes-TL081IP shares identical SOIC-8 pinout and function mapping with TL081CP, TL081ACP, and TL081BCP. All variants use pins 2 (IN–), 3 (IN+), 4 (VCC–), 6 (OUT), and 7 (VCC+) identically; NC pins (1, 5, 8) are unused across the family, ensuring direct PCB-level substitution where temperature and offset specs align.
TL081IP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- 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:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
TL081IP FAQ
1.How can I place an order for TL081IP through Aetrix?
Please submit a Request for Quotation (RFQ) for TL081IP 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 TL081IP reliable?
The price and inventory of TL081IP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL081IP is usually 5 days.
3.What payment methods are accepted for TL081IP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL081IP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL081IP?
TL081IP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL081IP 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 TL081IP?
For technical support, including TL081IP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL081IP requirements.
6.How does Aetrix verify that TL081IP is sourced from the original manufacturer or authorized distributors?
All TL081IP 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 TL081IP meets industry standards.
7.What is the process for return or replacement of TL081IP?
All TL081IP units undergo pre-shipment inspection (PSI). If there is an issue with TL081IP, 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 TL081IP part is unused and in its original packaging.
Return procedure for TL081IP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL081IP 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
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