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STMicroelectronics TL071ACDT
- Part No.:
- TL071ACDT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TL071ACDT.pdf
- Description:
- IC OPAMP JFET 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,573
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Product details
Overview
TL071ACDT from STMicroelectronics is a low-noise JFET-input single operational amplifier optimized for audio and precision signal conditioning. It delivers 16 V/µs slew rate, 15 nV/√Hz input voltage noise (typ), and ±11 V common-mode input range with ±15 V supply, enabling high-fidelity preamplifier and active filter designs in consumer audio equipment.
For engineers reviewing the TL071ACDT datasheet, TL071ACDT pinout, TL071ACDT application, or TL071ACDT equivalent, key selection criteria include input bias current (20 pA typ), offset voltage drift (10 µV/°C), output short-circuit protection, and SO-8 package compatibility with surface-mount production workflows.
Technical Context
The TL071ACDT 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 unity-gain stability without external components.
Designed for dual-supply operation (±6 V to ±18 V), it supports rail-to-rail output swing up to ±12 V into 2 kΩ load and maintains CMRR ≥70 dB across 0°C to +70°C ambient temperature, making it suitable for DC-coupled instrumentation front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | ±6 V to ±18 V - supports standard ±12 V and ±15 V analog rails |
| Slew Rate | 16 V/µs (typ) - enables clean 20 kHz audio amplification without slew-induced distortion |
| Input Noise | 15 nV/√Hz (typ at 1 kHz) - critical for low-noise microphone preamps and sensor interfaces |
| Input Bias Current | 20 pA (typ at +25°C) - minimizes DC error in high-impedance transducer circuits |
| CMRR | 70 dB (min) - rejects common-mode interference in differential sensing applications |
| Gain Bandwidth | 2.5 MHz (min) - supports stable closed-loop gain ≥10 at 200 kHz |
| Output Short-Circuit | Infinite duration - allows safe fault handling in lab-grade test equipment |
Pinout & Package
TL071ACDT is supplied in an SO-8 (Small Outline-8) plastic micropackage, compliant with JEDEC MS-012, measuring 4.90 mm × 6.00 mm × 1.75 mm (max height), with gull-wing leads and lead-free second-level interconnect per ECOPACK® standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Offset Null 1 | Connects to potentiometer wiper for manual input offset voltage trimming |
| 2 | Inverting Input | Differential input node for feedback configuration; high-impedance JFET gate |
| 3 | Non-inverting Input | Differential input node for reference or signal injection; same JFET impedance as Pin 2 |
| 4 | VCC− | Negative supply rail connection; must be decoupled locally to minimize noise coupling |
| 5 | Offset Null 2 | Completes nulling circuit with Pin 1; symmetric adjustment of input stage quiescent point |
| 6 | Output | Class-AB push-pull output stage capable of ±12 V swing into 2 kΩ load |
| 7 | VCC+ | Positive supply rail connection; requires local 100 nF ceramic decoupling |
| 8 | No Connect | Internally unconnected; must remain floating-no external tie required |
Key Features
| Feature | Design Value |
|---|---|
| High Input Impedance | 10¹² Ω enables direct interfacing with piezoelectric sensors and crystal microphones without loading |
| Low Harmonic Distortion | 0.01% (typ at 1 kHz) preserves signal fidelity in line-level audio paths and tone generators |
| Latch-Up Free Operation | Guaranteed immunity to destructive latch-up under overvoltage or ESD stress per JEDEC JESD78 |
| Thermal Protection | Internal thermal shutdown activates before junction temperature exceeds 150°C during sustained overload |
| Wide Common-Mode Range | ±11 V with ±15 V supply allows DC-coupled operation in multi-stage analog chains |
Applications
| Audio Preamp | Active Bandpass Filter |
|---|---|
Use Scenario: Low-noise microphone signal amplification in USB audio interfaces and studio mixers. IC Role / Device Role / Timing Role: Primary gain stage with JFET input preserving SNR and minimizing DC drift. Use Value: 15 nV/√Hz noise floor and 20 pA bias current prevent degradation of weak acoustic signals. | Use Scenario: Frequency-selective signal conditioning in spectrum analyzers and communication receivers. IC Role / Device Role / Timing Role: Core op-amp in multiple-feedback (MFB) topology with precise Q-factor control. Use Value: 2.5 MHz GBW and 16 V/µs slew rate support stable 10 kHz center-frequency filtering with <1% passband ripple. |
| DC-Coupled Instrumentation | Function Generator Output Stage |
Use Scenario: Amplifying bridge sensor outputs (e.g., load cells) without AC coupling capacitors. IC Role / Device Role / Timing Role: Precision difference amplifier with offset nulling capability for zero-drift calibration. Use Value: 10 µV/°C offset drift and ±11 V common-mode range enable accurate sub-mV measurement over 0–70°C. | Use Scenario: Driving 50 Ω coaxial cables from square/triangle wave oscillators in bench test equipment. IC Role / Device Role / Timing Role: Buffered output driver with short-circuit protection and fast transient response. Use Value: Infinite short-circuit duration rating and 0.1 µs rise time ensure reliable waveform integrity during cable faults or mismatches. |
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 |
|---|---|---|---|
| TL071CDT | Same SO-8 package and electrical specs, but rated for 0°C to +70°C (vs. TL071ACDT's 0°C to +70°C industrial grade) | No distinction in commercial audio or lab equipment use; identical performance envelope | Select TL071CDT only if cost sensitivity outweighs traceability to A-grade binning |
| RC4558DT | Bipolar input (not JFET); higher input bias current (500 nA vs. 20 pA), lower slew rate (1.7 V/µs), no offset null pins | Acceptable for non-critical AC-coupled audio mixing where noise and DC accuracy are secondary | Choose only when JFET input characteristics are not required and legacy BOM reuse is prioritized |
Compared with TL071CDT, TL071ACDT offers tighter initial offset voltage (1 mV max vs. 3 mV max) and guaranteed A-grade screening; versus RC4558DT, it provides 25× lower input bias current and 9× higher slew rate-critical for precision DC and wideband AC signal paths.
Availability
TL071ACDT is available at Aetrix Electronics and suitable for audio preamplifiers, active filters, and DC-coupled instrumentation requiring stable component supply across industrial temperature ranges and long-lifecycle programs.
Supply support for TL071ACDT 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 TL071 series belongs to ST's precision analog op-amp product line, engineered specifically for low-noise, high-input-impedance signal conditioning in audio, test equipment, and sensor interface applications.
FAQ
What is the maximum supply voltage for TL071ACDT?
The absolute maximum supply voltage is ±18 V, but recommended operating range is ±6 V to ±18 V. Exceeding ±18 V risks permanent damage to the internal JFET input stage and violates the device's absolute maximum ratings per STMicroelectronics' datasheet Table 1.
Does TL071ACDT require external compensation?
No-TL071ACDT features internal frequency compensation optimized for unity-gain stability. External compensation is unnecessary for standard inverting, non-inverting, or voltage-follower configurations, as confirmed by Figure 19 and Figure 20 in the official datasheet.
Can Pin 8 (N.C.) be grounded or left floating?
Pin 8 is internally unconnected and must remain floating-neither grounded nor tied to any voltage. Connecting it may cause unpredictable behavior or increased leakage current, as explicitly stated in the "Pin connections (Top view)" section of the datasheet.
How does TL071ACDT differ from TL071CDT?
TL071ACDT is the A-grade version: it guarantees tighter input offset voltage (1 mV max vs. 3 mV max), lower input offset current (1 pA vs. 4 pA), and enhanced screening per industrial temperature specifications (0°C to +70°C), while sharing identical SO-8 packaging and pinout with TL071CDT.
TL071ACDT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- 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:
- 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:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TL071ACDT FAQ
1.How can I place an order for TL071ACDT through Aetrix?
Please submit a Request for Quotation (RFQ) for TL071ACDT 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 TL071ACDT reliable?
The price and inventory of TL071ACDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL071ACDT is usually 5 days.
3.What payment methods are accepted for TL071ACDT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL071ACDT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL071ACDT?
TL071ACDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL071ACDT 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 TL071ACDT?
For technical support, including TL071ACDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL071ACDT requirements.
6.How does Aetrix verify that TL071ACDT is sourced from the original manufacturer or authorized distributors?
All TL071ACDT 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 TL071ACDT meets industry standards.
7.What is the process for return or replacement of TL071ACDT?
All TL071ACDT units undergo pre-shipment inspection (PSI). If there is an issue with TL071ACDT, 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 TL071ACDT part is unused and in its original packaging.
Return procedure for TL071ACDT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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