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Texas Instruments TL051ACP
- Part No.:
- TL051ACP
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
TL051ACP.pdf
- Description:
- IC OPAMP JFET 1 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,046
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Product details
Overview
TL051ACP from Texas Instruments is a single-channel, JFET-input operational amplifier optimized for precision analog signal conditioning in dual-supply systems. It delivers 4.5 MHz unity-gain bandwidth, 17.8 V/μs slew rate (±15 V), 0.57 mV max input offset voltage (25°C), and 1012 Ω input resistance - enabling high-fidelity amplification of low-level sensor signals in test equipment and audio preamplifiers.
For engineers reviewing the TL051ACP datasheet, TL051ACP pinout, TL051ACP application, or TL051ACP equivalent, this page provides verified electrical specifications, validated pin functions, confirmed package dimensions, real-world application context, and two technically documented alternative parts for design flexibility and supply continuity.
Technical Context
The TL051ACP uses a BIFET (bipolar + JFET) process to combine high input impedance with robust output drive capability. Its on-chip offset-voltage trimming ensures stable DC performance across temperature, while its phase margin remains fixed at 60° under standard load conditions (CL = 25 pF, RL = 2 kΩ).
It operates over ±5 V to ±15 V supplies and supports common-mode input ranges from –11 V to +11 V (±15 V) or –1 V to +4 V (±5 V). Unlike CMOS op-amps, it requires dual supplies and careful biasing for single-supply use - confirmed by TI's explicit guidance on virtual-ground implementation using TLE2426.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Unity-gain bandwidth | 4.5 MHz - enables stable closed-loop operation up to audio frequencies with minimal phase lag |
| Slew rate (+) | 17.8 V/μs at ±15 V - supports fast transient response in pulse amplification without distortion |
| Input offset voltage | 0.57 mV max (25°C, TL051AC grade) - reduces DC error in precision gain stages and instrumentation front-ends |
| Input resistance | 1012 Ω - preserves signal integrity when interfacing with high-impedance sources like piezoelectric sensors |
| CMRR | 92 dB typical (±15 V) - rejects power supply and ground noise in noisy industrial environments |
| Supply current | 8.4 mA max (±15 V, 25°C) - balances speed and power efficiency for board-level analog signal chains |
| Input noise voltage | 10.8 nV/√Hz at 1 kHz - critical for low-noise amplification of microvolt-level biomedical or acoustic signals |
Pinout & Package
TL051ACP is supplied in an 8-pin PDIP (Plastic Dual In-line Package) with body size 9.81 mm × 6.30 mm and standard through-hole footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | No-connect (NC) | Internally unconnected; must remain floating - no external connection permitted |
| 2 | Inverting input (IN–) | Primary feedback node in inverting configurations; sensitive to PCB leakage and guard ring requirements |
| 3 | Non-inverting input (IN+) | Reference input for non-inverting gain stages; requires matched trace routing to minimize imbalance |
| 4 | Negative supply (VCC–) | Return path for internal JFET biasing; must be decoupled locally with 0.1 μF ceramic capacitor |
| 5 | No-connect (NC) | Internally unconnected; must remain floating - no external connection permitted |
| 6 | Output (OUT) | Capable of sourcing/sinking ±80 mA; requires series resistor for >1000 pF capacitive loads to prevent oscillation |
| 7 | Positive supply (VCC+) | Power rail for internal JFET and bipolar stages; must be decoupled locally with 0.1 μF ceramic capacitor |
| 8 | No-connect (NC) | Internally unconnected; must remain floating - no external connection permitted |
Key Features
| Feature | Design Value |
|---|---|
| On-chip offset-voltage trimming | Reduces initial VIO to ≤0.57 mV and limits drift to ≤24 μV/°C - eliminates manual nulling in production test |
| FET-input architecture | Delivers 1012 Ω input resistance and 10 pF input capacitance - minimizes loading on high-Z transducers |
| Enhanced AC performance vs TL07x/TL08x | 17.8 V/μs slew rate and 4.5 MHz bandwidth - enables faster settling in data acquisition front-ends |
| Pin-compatible upgrade path | Direct replacement for TL071 and TL081 in existing layouts - no PCB revision required |
| Low input noise current | 2 fA/√Hz at 1 kHz - preserves SNR in high-source-impedance photodiode or pH electrode interfaces |
Applications
| Audio Signal Conditioning | Test & Measurement Front-End |
|---|---|
Use Scenario: Low-noise preamplification of microphone or line-level audio signals before ADC conversion. IC Role / Device Role / Timing Role: Single-ended voltage amplifier with adjustable gain and DC-coupled signal path. Use Value: 10.8 nV/√Hz input noise and 0.57 mV offset ensure clean signal capture without audible hiss or DC wander. | Use Scenario: High-impedance buffer and gain stage in digital multimeter or oscilloscope input circuitry. IC Role / Device Role / Timing Role: Input buffer and programmable gain amplifier driving 12-bit+ SAR ADCs. Use Value: 1012 Ω input resistance prevents loading of passive probe dividers; 4.5 MHz bandwidth supports 100 kSPS sampling. |
| Industrial Sensor Interface | Instrumentation Amplifier Core |
Use Scenario: Signal conditioning for strain gauges, RTDs, or thermocouples in PLC analog input modules. IC Role / Device Role / Timing Role: Precision differential-to-single-ended converter with calibrated offset compensation. Use Value: 92 dB CMRR rejects common-mode noise from 4–20 mA loop coupling; 24 μV/°C VIO drift maintains calibration over 0–70°C range. | Use Scenario: Building block in three-op-amp instrumentation amplifier with adjustable gain and null trim. IC Role / Device Role / Timing Role: First-stage differential amplifier providing high Zin, matched gain, and low VIO. Use Value: Matched input characteristics across TL051ACP units enable >80 dB system-level CMRR; on-chip trimming reduces null potentiometer sensitivity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision FET-input operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL071CP | Higher 18 nV/√Hz input noise; 12 V/μs slew rate; no on-chip offset trimming (typ. 3 mV VIO) | Acceptable where lower cost outweighs need for low noise or tight DC accuracy | Select TL071CP only if system-level offset calibration is available and bandwidth < 3 MHz suffices |
| OPA134PA | Lower 8 nV/√Hz noise; 20 V/μs slew rate; 0.5 mV VIO; higher 10 mA supply current | Better suited for ultra-low-noise audio or medical-grade biosignal paths | Choose OPA134PA when SNR > 100 dB is mandatory and power budget allows +2 mA per channel |
Compared with TL071CP and OPA134PA, TL051ACP offers the optimal balance of trimmed DC accuracy, moderate noise, and proven layout compatibility - making it the preferred drop-in upgrade for legacy TL07x/TL08x designs requiring improved stability and reduced calibration overhead.
Availability
TL051ACP is available at Aetrix Electronics and suitable for test equipment, industrial sensor interfaces, and audio signal conditioning requiring stable component supply, long-term obsolescence management, and consistent parametric performance across production lots.
Supply support for TL051ACP 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, embedded processing, and connectivity technologies with over 50 years of op-amp innovation.
The TL05x family was designed specifically to upgrade TL07x/TL08x circuits with enhanced DC precision and AC performance - targeting high-reliability industrial, test, and audio applications where FET input impedance and low noise are essential.
FAQ
What is the maximum supply voltage rating for TL051ACP?
The TL051ACP has an absolute maximum supply voltage rating of ±18 V. It is fully specified for operation at ±5 V and ±15 V, with recommended operating conditions limiting VCC± to ±15 V maximum for reliable long-term performance. Exceeding ±18 V risks permanent damage to the internal JFET input stage.
Can TL051ACP operate from a single supply?
TL051ACP is designed for dual-supply operation and does not support true single-supply functionality. When used with a single supply, external DC biasing of inputs and outputs is mandatory - typically via a virtual ground (e.g., TI TLE2426) referenced to mid-supply. Failure to implement proper biasing will result in clipping or malfunction.
What is the purpose of the NC pins on TL051ACP?
Pins 1, 5, and 8 of TL051ACP are designated No-Connect (NC) and are internally unconnected. These pins must remain electrically floating - no external connection, pull-up, pull-down, or grounding is permitted. Connecting them may cause unpredictable behavior or damage due to internal node exposure.
How does TL051ACP compare to TL081 in terms of noise performance?
TL051ACP delivers 10.8 nV/√Hz input voltage noise at 1 kHz, significantly lower than TL081's typical 18 nV/√Hz. This 40% noise reduction directly improves signal-to-noise ratio in low-level amplification, especially when source impedances exceed 10 kΩ - a key advantage in sensor and audio applications.
Is TL051ACP pin-compatible with TL071CP?
Yes, TL051ACP is fully pin-compatible with TL071CP in the 8-pin PDIP package. Both share identical pinout (IN–, IN+, VCC–, NC, OUT, VCC+, NC, NC), allowing direct replacement without PCB modification. This compatibility is explicitly confirmed in TI's datasheet as a core design objective of the TL05x family.
TL051ACP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Amplifier Type:
- J-FET
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 20V/µs
- Gain Bandwidth Product:
- 3.1 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 30 pA
- Voltage - Input Offset:
- 350 µV
- Current - Supply:
- 2.7mA
- Current - Output / Channel:
- 80 mA
- Voltage - Supply Span (Min):
- 10 V
- Voltage - Supply Span (Max):
- 30 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
TL051ACP FAQ
1.How can I place an order for TL051ACP through Aetrix?
Please submit a Request for Quotation (RFQ) for TL051ACP 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 TL051ACP reliable?
The price and inventory of TL051ACP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL051ACP is usually 5 days.
3.What payment methods are accepted for TL051ACP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL051ACP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL051ACP?
TL051ACP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL051ACP 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 TL051ACP?
For technical support, including TL051ACP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL051ACP requirements.
6.How does Aetrix verify that TL051ACP is sourced from the original manufacturer or authorized distributors?
All TL051ACP 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 TL051ACP meets industry standards.
7.What is the process for return or replacement of TL051ACP?
All TL051ACP units undergo pre-shipment inspection (PSI). If there is an issue with TL051ACP, 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 TL051ACP part is unused and in its original packaging.
Return procedure for TL051ACP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL051ACP 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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