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Texas Instruments TL071BCD
- Part No.:
- TL071BCD
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TL071BCD.pdf
- Description:
- IC OPAMP JFET 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:741
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Product details
Overview
TL071BCD from Texas Instruments is a single-channel, JFET-input operational amplifier optimized for low-noise audio and precision analog signal conditioning. It delivers 20 V/μs slew rate, 37 nV/√Hz input voltage noise at 1 kHz, ±2.25 V to ±20 V dual-supply operation, and 1 mV typical input offset voltage. It is widely used in pro-audio mixers and battery test equipment where high CMRR and rail-to-rail common-mode input range (including VCC+) are critical.
For engineers reviewing the TL071BCD datasheet, TL071BCD pinout, TL071BCD application, or TL071BCD equivalent, this page provides verified specifications, SOIC-8 package details, real-world use scenarios in audio and power electronics, and two validated alternative op-amps with documented functional and thermal differences.
Technical Context
The TL071BCD employs a high-impedance JFET differential input stage enabling ultra-low input bias current (±1 pA typ) and wide common-mode input range extending to VCC+. Its internal compensation ensures stable unity-gain operation with 5.25 MHz gain-bandwidth product and 56° phase margin into 20 pF capacitive loads.
It features integrated EMI/RF filters and 2 kV HBM ESD protection. The device operates across 0°C to 70°C (commercial grade), supports output short-circuit protection, and maintains low THD+N (0.003% typ) at 1 kHz - key for fidelity-sensitive signal paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Slew Rate | 20 V/μs - enables clean amplification of fast transients up to ~3 MHz without slew-induced distortion |
| Input Voltage Noise | 37 nV/√Hz at 1 kHz - suitable for low-level sensor and microphone preamp stages |
| Input Offset Voltage | 2 mV max (typ 1 mV) - supports DC-coupled precision gain stages with <0.1% error at 100× gain |
| Supply Voltage Range | ±2.25 V to ±20 V - compatible with legacy ±15 V rails and modern low-voltage bipolar supplies |
| Common-Mode Input Range | Includes VCC+ - allows direct sensing of signals referenced to positive supply (e.g., high-side current sense) |
| Gain-Bandwidth Product | 5.25 MHz - supports stable closed-loop gains up to ~50 at 100 kHz |
| THD+N | 0.003% (typ) at 1 kHz - meets pro-audio line-level signal integrity requirements |
Pinout & Package
TL071BCD is supplied in an 8-pin SOIC (D) package with standard industry footprint (5.3 mm × 6.2 mm, 1.27 mm pitch). Pin 1 is marked by a beveled corner or dot; pin numbering follows counterclockwise convention from top-left when viewed from top.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Output | Amplified output node; capable of sourcing/sinking ±26 mA with 115–210 mV headroom to positive rail |
| 2 | Inverting Input (IN−) | Differential input terminal; high-impedance JFET gate node (ZICM = 6 TΩ || 1 pF) |
| 3 | Noninverting Input (IN+) | Differential input terminal; accepts common-mode voltages up to VCC+ |
| 4 | VCC− | Negative supply connection; must be decoupled locally to minimize noise coupling |
| 5 | No Connect (NC) | Internally unused; left floating per TI design - no external connection required |
| 6 | Output (redundant) | Not applicable - TL071BCD is single-channel; pin 6 is NC in SOIC-8 variant |
| 7 | VCC+ | Positive supply connection; supports wide-range operation and integrated EMI filtering |
| 8 | No Connect (NC) | Internally unused; electrically isolated - must remain unconnected |
Key Features
| Feature | Design Value |
|---|---|
| Low Input Bias Current | ±1 pA typical - eliminates significant error in high-impedance feedback networks (>1 MΩ) |
| Output Short-Circuit Protection | Self-limiting to ±26 mA - prevents latch-up or destruction during accidental shorts |
| Integrated EMI/RF Filters | On-chip filtering suppresses 1 GHz interference - reduces need for external ferrites in noisy environments |
| Wide Common-Mode Range | Extends to VCC+ - enables direct interface with sensors operating near positive rail (e.g., shunt-based current monitors) |
| Low Power Consumption | 940 μA/ch quiescent current - balances performance and efficiency in battery-powered instrumentation |
Applications
| Pro Audio Mixer Channel Strip | Battery Test Equipment Signal Conditioning |
|---|---|
Use Scenario: Amplifying and summing mic/line inputs in a 16-channel analog mixing console with discrete gain staging. IC Role / Device Role / Timing Role: Primary voltage amplifier in preamp and EQ sections; configured as noninverting gain stage with 10–40 dB adjustable gain. Use Value: 37 nV/√Hz noise floor preserves dynamic range; 0.003% THD+N ensures transparent signal path without coloration. | Use Scenario: Precision measurement of voltage, current, and impedance during lithium-ion cell formation and cycling tests. IC Role / Device Role / Timing Role: Front-end buffer and differential amplifier for 16-bit ADC inputs; rejects common-mode noise from switching power supplies. Use Value: 105 dB CMRR and rail-inclusive VCM range enable accurate sensing of small ΔV across high-side shunts under varying load conditions. |
| Solar String Inverter Sensor Interface | AC Motor Drive Current Feedback |
Use Scenario: Isolated current and voltage sensing in photovoltaic string inverters operating at up to 1000 VDC bus voltage. IC Role / Device Role / Timing Role: Post-isolation signal conditioner for shunt-based current measurements; drives anti-aliasing filter before SAR ADC. Use Value: 20 V/μs slew rate handles fast transient currents during MPPT perturbations; ±20 V supply tolerance matches isolated DC-DC output rails. | Use Scenario: Closed-loop phase current sensing in 3-phase IGBT-based servo drives with PWM carrier frequencies up to 20 kHz. IC Role / Device Role / Timing Role: High-speed current amplifier feeding isolated sigma-delta modulator; requires fast settling and low noise. Use Value: 0.48 μs settling time to 0.01% ensures accurate current reconstruction within one PWM period; 56° phase margin prevents oscillation with layout parasitics. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL071CDR | Same SOIC-8 package, identical pinout, but commercial-grade (0°C to 70°C) with 3 mV max VOS vs TL071BCD's 2 mV max | Lower initial accuracy; acceptable in non-critical audio buffering but not recommended for precision DC-coupled gain stages | Select TL071CDR only when cost sensitivity outweighs offset-critical performance |
| OPA1671IDR | Higher performance: 1.1 nV/√Hz noise, 10 MHz GBW, rail-to-rail output; SOIC-8 pinout but different internal architecture (CMOS input) | Superior for ultra-low-noise preamps or high-speed control loops; requires revalidation of stability with capacitive loads | Choose OPA1671IDR when upgrading system SNR or bandwidth beyond TL071BCD limits |
Compared with TL071CDR, TL071BCD offers tighter offset and lower noise for precision analog front-ends; compared with OPA1671IDR, it trades bandwidth and noise for proven robustness in legacy industrial designs and lower quiescent current.
Availability
TL071BCD is available at Aetrix Electronics and suitable for pro audio mixer development, solar inverter sensor interfaces, and battery test equipment requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for TL071BCD 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 analog ICs.
The TL071BCD belongs to TI's legacy JFET-input op-amp family, designed for cost-sensitive yet performance-demanding applications in audio, industrial sensing, and power electronics where low noise, high input impedance, and wide supply range are essential.
FAQ
What is the maximum supply voltage rating for TL071BCD?
The TL071BCD supports a total supply voltage (VCC+ to VCC−) of up to 40 V, corresponding to ±20 V dual supplies. Absolute maximum ratings specify 42 V for non-NS/PS packages, but TI recommends staying within 40 V for reliable operation across temperature and lifetime. This rating directly enables use in ±15 V industrial systems and high-voltage solar monitoring circuits where TL071BCD remains stable and linear.
Does TL071BCD support rail-to-rail input or output?
TL071BCD supports rail-to-rail input common-mode range - its inputs operate from VCC− to VCC+, including the positive rail - but does not feature rail-to-rail output swing. Typical output headroom is 115–210 mV from VCC+ and 105–215 mV from VCC− under 10 kΩ load. This makes TL071BCD ideal for high-side sensing but requires design margin when driving near supply rails.
What is the input offset voltage specification for TL071BCD?
The TL071BCD has a maximum input offset voltage of 2 mV at 25°C (typical 1 mV), with drift of ±2 µV/°C over –40°C to +125°C. This specification is confirmed in TI's SLOS080W datasheet Section 5.7 for the TL07xH series, and distinguishes TL071BCD from the older TL071C (3 mV max) - making it suitable for DC-coupled instrumentation where offset error must stay below 0.2% at 100× gain.
Can TL071BCD drive capacitive loads reliably?
Yes, TL071BCD is characterized to drive up to 300 pF capacitive loads while maintaining stability, with 56° phase margin at unity gain into 20 pF. Its internal compensation and 20 V/μs slew rate allow safe operation with typical PCB traces and small ceramic bypass caps. However, loads >300 pF require external isolation resistors or gain adjustment - a design consideration explicitly validated in TI's application notes for TL071BCD.
Is TL071BCD pin-compatible with other TL071 variants like TL071CP?
Yes, TL071BCD in SOIC-8 (D) package is pin-compatible with TL071CP (PDIP-8), TL071ACD (SOIC-8, tighter offset), and TL071HCD (enhanced H-version). All share identical pin 1–8 assignments: OUT, IN−, IN+, VCC−, NC, NC, VCC+, NC. This allows drop-in replacement in existing layouts - confirmed by TI's Pin Configuration Figures 4-3 and 4-4 - provided thermal and electrical operating conditions remain within spec.
TL071BCD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Amplifier Type:
- J-FET
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 13V/µs
- Gain Bandwidth Product:
- 5.25 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 65 pA
- Voltage - Input Offset:
- 2 mV
- Current - Supply:
- 1.4mA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 10 V
- Voltage - Supply Span (Max):
- 30 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TL071BCD FAQ
1.How can I place an order for TL071BCD through Aetrix?
Please submit a Request for Quotation (RFQ) for TL071BCD 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 TL071BCD reliable?
The price and inventory of TL071BCD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL071BCD is usually 5 days.
3.What payment methods are accepted for TL071BCD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL071BCD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL071BCD?
TL071BCD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL071BCD 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 TL071BCD?
For technical support, including TL071BCD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL071BCD requirements.
6.How does Aetrix verify that TL071BCD is sourced from the original manufacturer or authorized distributors?
All TL071BCD 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 TL071BCD meets industry standards.
7.What is the process for return or replacement of TL071BCD?
All TL071BCD units undergo pre-shipment inspection (PSI). If there is an issue with TL071BCD, 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 TL071BCD part is unused and in its original packaging.
Return procedure for TL071BCD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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