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STMicroelectronics TL071IN
- Part No.:
- TL071IN
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
TL071IN.pdf
- Description:
- IC OPAMP JFET 1 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,552
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Product details
Overview
TL071IN from STMicroelectronics is a low-noise JFET-input single operational amplifier designed for precision analog signal conditioning in audio, instrumentation, and sensor interface circuits. It delivers 16 V/µs slew rate, 15 nV/√Hz input voltage noise (typ), ±11 V input common-mode range, and 80 dB CMRR at +25°C - enabling high-fidelity amplification in ±15 V supply systems.
For engineers reviewing the TL071IN datasheet, TL071IN pinout, TL071IN application, or TL071IN equivalent, key selection criteria include input bias current (≤20 pA typ), offset voltage drift (10 µV/°C), output short-circuit protection, and DIP8 package compatibility with legacy through-hole PCB layouts.
Technical Context
The TL071IN integrates matched high-voltage JFET and bipolar transistors on a monolithic die to achieve high input impedance (>10¹² Ω) and low harmonic distortion (0.01% typ at 1 kHz). Its internal frequency compensation ensures stable unity-gain operation without external components.
It operates across ±6 V to ±18 V supplies, supports rail-to-rail input common-mode range up to VCC+, and features latch-up free architecture with infinite output short-circuit duration under thermal limits - critical for robust front-end amplification in industrial signal chains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Slew Rate | 16 V/µs (typ): Enables faithful reproduction of fast transients in audio and pulse amplification without slew-induced distortion. |
| Input Noise Voltage | 15 nV/√Hz (typ @ 1 kHz): Supports low-noise preamplification of microvolt-level sensor signals without significant SNR degradation. |
| Input Bias Current | 20 pA (typ @ +25°C): Minimizes DC error in high-impedance source applications such as photodiode or piezoelectric transducer interfaces. |
| CMRR | 80 dB (typ @ +25°C): Rejects common-mode interference in differential measurement setups like bridge amplifiers or ECG front-ends. |
| Supply Voltage Range | ±6 V to ±18 V: Compatible with standard dual-rail lab and industrial power supplies while maintaining specified AC/DC performance. |
| Offset Voltage Drift | 10 µV/°C (max): Ensures stable DC operating point over temperature in precision integrators and active filters. |
| Gain Bandwidth Product | 4 MHz (typ): Supports stable closed-loop gain ≥10 up to ~400 kHz, suitable for anti-aliasing and reconstruction filters. |
Pinout & Package
Dual-in-line plastic package (DIP8), 0.3-inch body width, through-hole mounting. RoHS-compliant ECOPACK® with lead-free second-level interconnect.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Offset Null 1 | Connects to potentiometer wiper for manual input offset voltage trimming in precision DC-coupled stages. |
| 2 | Inverting Input | Inverts and amplifies differential input voltage relative to non-inverting input; high-impedance JFET node. |
| 3 | Non-inverting Input | Reference input for positive feedback configurations; identical JFET input structure and bias characteristics as Pin 2. |
| 4 | VCC− | Negative supply rail connection; must be decoupled locally to minimize noise coupling into high-Z inputs. |
| 5 | Offset Null 2 | Second terminal of offset null potentiometer; used with Pin 1 to balance input stage mismatch. |
| 6 | Output | Class-AB buffered output capable of ±10 V swing into 2 kΩ load; includes short-circuit protection. |
| 7 | VCC+ | Positive supply rail connection; symmetric dual supply required for full common-mode range utilization. |
| 8 | No Connect | Internally unconnected; must remain floating - no external tie or pull-up/down. |
Key Features
| Feature | Design Value |
|---|---|
| High Input Impedance | ≥10¹² Ω enables direct interfacing with high-Z sources (e.g., crystal microphones, pH electrodes) without loading error. |
| Low Harmonic Distortion | 0.01% (typ @ 1 kHz) preserves waveform fidelity in audio preamps and function generator outputs. |
| Output Short-Circuit Protection | Allows indefinite output shorting to either rail or ground without device damage, simplifying fault-tolerant design. |
| Latch-Up Free Operation | Guarantees immunity to parasitic SCR triggering during overvoltage or ESD events in mixed-signal systems. |
| Wide Common-Mode Range | Extends to VCC+ (±11 V min), supporting level-shifting and rail-sensing applications without external attenuators. |
Applications
| Audio Pre-amplifier | Instrumentation Amplifier Front-End |
|---|---|
Use Scenario: Low-noise amplification of microphone or phono cartridge signals prior to ADC sampling or tone control. IC Role / Device Role / Timing Role: Primary gain stage with JFET input preserving signal integrity and minimizing added noise floor. Use Value: 15 nV/√Hz noise and 0.01% THD ensure clean signal capture without audible artifacts or spectral contamination. | Use Scenario: First-stage amplification in medical ECG or industrial strain gauge measurement systems. IC Role / Device Role / Timing Role: High-Z, low-bias buffer for differential sensor bridges requiring minimal input current error. Use Value: 20 pA input bias current prevents DC offset shift in high-resistance Wheatstone bridges (e.g., >100 kΩ arms). |
| Active Filter Stage | Function Generator Output Driver |
Use Scenario: Second-order Sallen-Key or state-variable filter in test equipment or audio equalizers. IC Role / Device Role / Timing Role: Unity-gain stable voltage follower or gain-setting amplifier with precise pole placement. Use Value: Internal compensation and 4 MHz GBW support accurate filter response up to ~400 kHz with predictable phase margin. | Use Scenario: Final output buffer in arbitrary waveform generators delivering ±10 Vpp into 600 Ω loads. IC Role / Device Role / Timing Role: High-slew-rate driver isolating DAC output from reactive or capacitive loads. Use Value: 16 V/µs slew rate ensures <1% overshoot on 10 V step transitions at 100 kHz, preserving waveform shape. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar JFET-input op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL071CP | Same core architecture but commercial-grade (0°C to +70°C), lower ESD rating (HBM 500 V vs. 500 V), identical DIP8 pinout. | Not qualified for extended industrial environments; unsuitable for systems operating beyond +70°C ambient. | Select TL071CP only for cost-sensitive consumer or lab-grade designs with controlled thermal environments. |
| LF351N | Higher input bias current (30 pA typ), slightly lower slew rate (12 V/µs), same DIP8 package and pinout. | Reduced accuracy in ultra-high-Z sensor interfaces; marginal performance in fast pulse amplification. | Choose LF351N only when legacy inventory exists or where 12 V/µs slew rate suffices for bandwidth-limited applications. |
Compared with TL071CP and LF351N, TL071IN offers superior thermal stability (–40°C to +105°C), tighter offset drift (10 µV/°C), and higher slew rate - making it the preferred choice for industrial instrumentation and automotive-adjacent signal conditioning where reliability across temperature extremes is critical.
Availability
TL071IN is available at Aetrix Electronics and suitable for audio pre-amplification, instrumentation front-ends, and active filter design requiring stable component supply across extended temperature ranges.
Supply support for TL071IN 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing analog, MCU, power, and sensor solutions for industrial, automotive, and consumer markets.
The TL071IN belongs to ST's legacy precision op-amp product line, engineered specifically for low-noise, high-input-impedance analog signal conditioning in demanding industrial and test equipment applications.
FAQ
What is the maximum supply voltage for TL071IN?
The absolute maximum supply voltage is ±18 V. Operating within ±6 V to ±18 V ensures full specification compliance per Table 2. Exceeding ±18 V risks permanent damage, and operation below ±6 V may degrade slew rate and output swing performance.
Does TL071IN require external compensation?
No - the TL071IN features internal frequency compensation optimized for unity-gain stability. External compensation is unnecessary for standard inverting, non-inverting, or voltage-follower configurations, though careful layout and local supply decoupling remain essential.
Can TL071IN drive capacitive loads directly?
It can drive ≤100 pF capacitively without instability, as verified in Figure 15 (pulse response). For larger loads (e.g., cables or ADC inputs), a series isolation resistor (20–100 Ω) between output and capacitance is recommended to maintain phase margin and prevent ringing.
Is Pin 8 (NC) safe to leave unconnected?
Yes - Pin 8 is internally unconnected and must remain floating. No pull-up, pull-down, or tie-to-rail is permitted. Connecting it risks internal node interference or undefined behavior, as confirmed by ST's mechanical and schematic documentation.
TL071IN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- J-FET
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 16V/µs
- Gain Bandwidth Product:
- 4 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 20 pA
- Voltage - Input Offset:
- 3 mV
- Current - Supply:
- 1.4mA
- Current - Output / Channel:
- 40 mA
- Voltage - Supply Span (Min):
- 6 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 105°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-DIP
TL071IN FAQ
1.How can I place an order for TL071IN through Aetrix?
Please submit a Request for Quotation (RFQ) for TL071IN 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 TL071IN reliable?
The price and inventory of TL071IN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL071IN is usually 5 days.
3.What payment methods are accepted for TL071IN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL071IN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL071IN?
TL071IN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL071IN 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 TL071IN?
For technical support, including TL071IN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL071IN requirements.
6.How does Aetrix verify that TL071IN is sourced from the original manufacturer or authorized distributors?
All TL071IN 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 TL071IN meets industry standards.
7.What is the process for return or replacement of TL071IN?
All TL071IN units undergo pre-shipment inspection (PSI). If there is an issue with TL071IN, 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 TL071IN part is unused and in its original packaging.
Return procedure for TL071IN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL071IN Tags
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LM358DT
STMicroelectronics
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MCP6006T-E/OT
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MCP6006UT-E/OT
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