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Texas Instruments TL081HIDR
- Part No.:
- TL081HIDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TL081HIDR.pdf
- Description:
- IC OPAMP JFET 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:14,173
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Product details
Overview
TL081HIDR from Texas Instruments is a single-channel JFET-input operational amplifier optimized for precision, high-speed analog signal conditioning in industrial and power electronics. It delivers 20 V/μs slew rate, 1 mV typical input offset voltage, 37 nV/√Hz input voltage noise at 1 kHz, ±2.25 V to ±20 V dual-supply operation, and rail-to-rail common-mode input range extending to VCC+. It is used in solar inverter voltage sensing and motor drive current feedback loops.
For engineers reviewing the TL081HIDR datasheet, TL081HIDR pinout, TL081HIDR application, or TL081HIDR equivalent, this page provides verified electrical specifications, SOIC-8 package terminal mapping, real-world use cases in UPS and pro audio systems, and two validated alternative op-amps with documented functional trade-offs.
Technical Context
The TL081HIDR employs a high-swing JFET input stage enabling common-mode input voltage up to VCC+, critical for single-supply or high-side sensing. 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 protection, supporting reliable operation across –40°C to +125°C ambient. The device maintains low 940 μA/ch quiescent current while delivering 5.25 MHz gain-bandwidth and 0.48 μs settling time to 0.01% for 2 V steps.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Slew Rate | 20 V/μs - enables accurate reproduction of fast transients in motor control feedback paths |
| Input Offset Voltage | ±1 mV (typ) - reduces DC error in precision instrumentation amplifiers and sensor front-ends |
| Input Voltage Noise | 37 nV/√Hz at 1 kHz - supports low-noise audio preamplification and battery test equipment signal chains |
| Supply Voltage Range | ±2.25 V to ±20 V (or 4.5 V to 40 V single-ended) - accommodates wide industrial supply rails including 24 V and 36 V systems |
| Common-Mode Input Range | Extends to VCC+ - allows direct interface with high-side current shunt monitors without level-shifting |
| Gain-Bandwidth Product | 5.25 MHz - supports stable closed-loop designs up to ~500 kHz with moderate gain |
| Quiescent Current | 940 μA per amplifier - balances performance and power efficiency in always-on monitoring circuits |
Pinout & Package
TL081HIDR is supplied in an 8-pin SOIC (D) package with standard industry footprint and thermal characteristics (RθJA = 158.8°C/W). Pin functions are fully defined per TI SLOS081O Rev. September 2025.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | NC | No connect - must remain unconnected per datasheet; not internally bonded |
| 2 | IN– | Inverting input - accepts feedback network or differential signal path |
| 3 | IN+ | Non-inverting input - connects to reference, sensor output, or signal source |
| 4 | VCC– | Negative supply rail - requires local decoupling capacitor (0.1 μF ceramic) |
| 5 | NC | No connect - must remain unconnected per datasheet; not internally bonded |
| 6 | OUT | Amplifier output - drives resistive or capacitive loads up to 300 pF directly |
| 7 | VCC+ | Positive supply rail - requires local decoupling capacitor (0.1 μF ceramic) |
| 8 | NC | No connect - must remain unconnected per datasheet; not internally bonded |
Key Features
| Feature | Design Value |
|---|---|
| High ESD robustness | 1.5 kV HBM - withstands handling and board-level ESD events in industrial environments |
| Integrated EMI/RF filtering | 53 dB EMI rejection at 1 GHz - suppresses RF interference in noisy motor drive or inverter settings |
| Output short-circuit protection | ±26 mA continuous short-circuit current - prevents latch-up or destruction during fault conditions |
| Low THD+N | 0.00012% at 1 kHz - preserves signal fidelity in pro audio mixer summing and EQ stages |
| Wide temperature range | –40°C to +125°C operation - qualified for under-hood automotive auxiliary systems and solar inverter control boards |
Applications
| Solar Inverter Voltage Sensing | Motor Drive Current Feedback |
|---|---|
Use Scenario: Monitoring DC-link voltage in string inverters using high-impedance resistive dividers. IC Role / Device Role / Timing Role: Precision buffer and level-shifter for ADC input, rejecting common-mode ripple. Use Value: VCM-to-VCC+ input range eliminates need for external level-shifting circuitry, reducing BOM count and layout area. | Use Scenario: Amplifying shunt voltage in AC servo drive power stages. IC Role / Device Role / Timing Role: High-speed current sense amplifier with fast overload recovery (300 ns). Use Value: 20 V/μs slew rate and 0.48 μs 0.01% settling enable accurate PWM-current reconstruction at >20 kHz switching frequencies. |
| Single-Phase Online UPS | Pro Audio Mixer Signal Path |
Use Scenario: Regulating battery charging voltage and monitoring inverter output waveform quality. IC Role / Device Role / Timing Role: Error amplifier in voltage regulation loop and harmonic distortion detector. Use Value: 0.00012% THD+N and 37 nV/√Hz noise ensure clean reference generation and low-distortion feedback signals. | Use Scenario: Low-noise microphone preamplification and channel summing in analog mixing consoles. IC Role / Device Role / Timing Role: First-stage gain block and active filter component in signal chain. Use Value: JFET input preserves high source impedance compatibility with condenser mics while minimizing bias current-induced drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL081CDR | Higher input offset (±3 mV typ), wider temp range (0°C to 70°C), no EMI filtering | Limited to commercial-grade systems; unsuitable for automotive or extended-temp industrial use | Select when cost sensitivity outweighs ESD/EMI requirements and full industrial temp range is unnecessary |
| OPA2134PA | Lower noise (8 nV/√Hz), lower IB (1 pA), higher IQ (4 mA), no short-circuit protection | Better for ultra-low-noise audio; lacks fault tolerance required in power electronics | Choose for premium audio signal paths where power budget and robustness allow trade-off for noise performance |
Compared with TL081CDR and OPA2134PA, TL081HIDR uniquely combines industrial temperature rating, integrated EMI filtering, and output short-circuit protection-making it the only option among the three qualified for ruggedized solar inverter and motor drive control applications.
Availability
TL081HIDR is available at Aetrix Electronics and suitable for solar inverter voltage sensing, motor drive current feedback, and pro audio mixer signal path applications requiring stable component supply across long production lifecycles.
Supply support for TL081HIDR 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 high-reliability components.
The TL08xH family was designed specifically for cost-sensitive industrial and power electronics applications demanding enhanced ESD immunity, extended temperature operation, and robust EMI rejection-without sacrificing core op-amp performance.
FAQ
What is the maximum supply voltage for TL081HIDR?
The TL081HIDR supports a total supply voltage (VCC+ to VCC–) of up to 40 V, or ±20 V in dual-supply configuration. Absolute maximum ratings specify 42 V for non-NS/PS packages, but recommended operating conditions limit continuous use to 40 V to ensure reliability and parametric compliance across temperature.
Does TL081HIDR have rail-to-rail input capability?
Yes, TL081HIDR features a common-mode input voltage range that extends to VCC+, satisfying rail-to-rail input functionality on the positive side. However, the lower bound is (VCC–) + 1.5 V, so it does not reach the negative rail. This enables high-side sensing without level-shifting while maintaining JFET-input advantages.
What is the purpose of the NC pins on TL081HIDR?
TL081HIDR has four NC (no-connect) pins - pins 1, 5, 8, and pin 4 is VCC–, not NC. Per TI SLOS081O, pins 1, 5, and 8 are unconnected die pads with no internal bond wire. They must remain floating and unconnected on PCB to avoid parasitic coupling or unintended current paths that could degrade noise or stability.
Can TL081HIDR drive capacitive loads directly?
Yes, TL081HIDR is characterized to drive up to 300 pF capacitive load while maintaining stability, as confirmed by phase margin ≥56° and small-signal overshoot data in Figure 5-23/5-24 of the datasheet. For loads >300 pF, external isolation resistance (e.g., 10–50 Ω in series with output) is recommended to prevent peaking or oscillation.
How does TL081HIDR differ from standard TL081 variants like TL081CDR?
TL081HIDR improves upon TL081CDR with tighter input offset (±1 mV vs ±3 mV typ), higher ESD rating (1.5 kV HBM vs 1 kV), integrated EMI/RF filters (53 dB at 1 GHz), and qualification across –40°C to +125°C. It also features lower input bias current (±1 pA typ) and improved noise performance, making it suitable for demanding industrial environments where CDR-grade parts fall short.
TL081HIDR 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:
- Push-Pull
- Slew Rate:
- 20V/µs
- Gain Bandwidth Product:
- 5.25 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 1.4mA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 4.5 V
- Voltage - Supply Span (Max):
- 40 V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TL081HIDR FAQ
1.How can I place an order for TL081HIDR through Aetrix?
Please submit a Request for Quotation (RFQ) for TL081HIDR 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 TL081HIDR reliable?
The price and inventory of TL081HIDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL081HIDR is usually 5 days.
3.What payment methods are accepted for TL081HIDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL081HIDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL081HIDR?
TL081HIDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL081HIDR 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 TL081HIDR?
For technical support, including TL081HIDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL081HIDR requirements.
6.How does Aetrix verify that TL081HIDR is sourced from the original manufacturer or authorized distributors?
All TL081HIDR 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 TL081HIDR meets industry standards.
7.What is the process for return or replacement of TL081HIDR?
All TL081HIDR units undergo pre-shipment inspection (PSI). If there is an issue with TL081HIDR, 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 TL081HIDR part is unused and in its original packaging.
Return procedure for TL081HIDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL081HIDR Tags
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