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Texas Instruments TL051CP
- Part No.:
- TL051CP
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
TL051CP.pdf
- Description:
- IC OPAMP JFET 1 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,982
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Product details
Overview
TL051CP from Texas Instruments is a single-channel FET-input operational amplifier designed 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), 0.75 mV max input offset voltage (C-grade, 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 TL051CP datasheet, TL051CP pinout, TL051CP application, or TL051CP equivalent, key selection criteria include its enhanced DC accuracy over TL071/TL081, FET-input impedance advantage for high-Z sources, and verified compatibility with existing TL07x/TL08x PCB layouts using PDIP-8 packaging.
Technical Context
The TL051CP uses a JFET-input front-end architecture optimized for low input bias current (≤200 pA at 25°C) and low input offset drift (25 μV/°C). Its internal offset-voltage trimming ensures stable DC performance across temperature without external nulling circuitry.
It operates across ±5 V to ±15 V supplies, supports common-mode input ranges up to ±11 V (at ±15 V), and delivers rail-to-rail output swing capability limited only by load conditions - making it suitable for wide-dynamic-range instrumentation where bipolar op-amps introduce unacceptable input current errors.
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 and active filtering |
| Input offset voltage | 0.75 mV max (25°C, C-grade) - reduces DC error in precision gain stages without manual calibration |
| Input bias current | 20 pA typical (25°C) - preserves signal integrity when interfacing with piezoelectric sensors or photodiode transimpedance nodes |
| Common-mode range | –11 V to +11 V at ±15 V supply - accommodates wide-swing differential inputs in industrial signal conditioning |
| Supply current | 8.1 mA typical (25°C, ±15 V) - balances speed and power efficiency for battery-backed or thermally constrained designs |
| Input resistance | 10¹² Ω - prevents loading of high-impedance sources such as electret microphones or pH electrodes |
Pinout & Package
TL051CP is supplied in an 8-pin PDIP (Plastic Dual In-line Package) with nominal body size 9.81 mm × 6.30 mm. Pin 1 and Pin 5 are no-connect (NC) terminals; functional pins follow standard single-op-amp configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | No-connect | Must remain unconnected; not internally bonded |
| 2 | Inverting input | Primary feedback node for closed-loop configurations (e.g., inverting amplifier, active filter) |
| 3 | Non-inverting input | Reference input for buffer, comparator, or non-inverting gain stages |
| 4 | Negative supply | Connects to VCC–; establishes lower rail reference for dual-supply operation |
| 5 | No-connect | Must remain unconnected; not internally bonded |
| 6 | Output | Drives loads up to 2 kΩ with full swing; requires series resistor for >1000 pF capacitive loads |
| 7 | Positive supply | Connects to VCC+; establishes upper rail reference for dual-supply operation |
| 8 | No-connect | Must remain unconnected; not internally bonded |
Key Features
| Feature | Design Value |
|---|---|
| On-chip offset-voltage trimming | Reduces initial VIO to ≤0.75 mV and limits drift to 25 μV/°C - eliminates need for external null potentiometers in production systems |
| FET-input architecture | Delivers 10¹² Ω input resistance and ≤200 pA input bias current - preserves signal fidelity from ultra-high-impedance sources |
| Pin-compatible upgrade path | Direct replacement for TL071 and TL081 in existing PDIP-8 layouts - enables performance enhancement without PCB redesign |
| Low-noise performance | 10.8 nV/√Hz input voltage noise at 1 kHz - supports clean amplification of microvolt-level signals in medical or seismic sensing |
| Stable unity-gain operation | 60° phase margin with 25 pF load - ensures robust small-signal step response without external compensation |
Applications
| Audio Signal Conditioning | Industrial Sensor Interface |
|---|---|
Use Scenario: Amplifying low-output electret microphone signals in studio-grade preamplifiers before ADC sampling. IC Role / Device Role / Timing Role: Single-ended voltage amplifier with high input impedance and low THD (0.00021%) to preserve audio spectral integrity. Use Value: 10.8 nV/√Hz noise floor and 17.8 V/μs slew rate enable clean reproduction of transients up to 20 kHz without distortion. | Use Scenario: Conditioning output from a 10 MΩ pH electrode in laboratory analyzers requiring stable DC gain. IC Role / Device Role / Timing Role: High-Z buffer and precision gain stage with trimmed VIO to minimize calibration drift over time. Use Value: 20 pA input bias current prevents electrode polarization error; 0.75 mV max VIO limits zero-point error to <0.5% of full-scale reading. |
| Test & Measurement Front-End | Active Filter Design |
Use Scenario: Input stage of portable oscilloscope vertical amplifier handling ±10 V signals with minimal loading. IC Role / Device Role / Timing Role: Unity-gain follower providing isolation and common-mode rejection before differential processing. Use Value: 10¹² Ω input resistance avoids attenuation of high-frequency components; ±11 V CMVR supports full-scale input swing at ±15 V supply. | Use Scenario: 2nd-order Sallen-Key low-pass filter in data acquisition systems targeting 10 kHz cutoff. IC Role / Device Role / Timing Role: Gain block with controlled phase margin (60°) ensuring monotonic step response and no peaking. Use Value: 4.5 MHz GBW allows stable filter design up to 10% of unity-gain frequency; 106 dB crosstalk attenuation prevents channel coupling in multi-channel systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar FET-input operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL071CP | Higher input voltage noise (18 nV/√Hz), no on-chip offset trimming (3 mV max VIO), 20 V/μs slew rate | Lower cost; acceptable where DC accuracy is secondary to speed | Choose TL071CP only if system tolerates higher offset drift and noise; TL051CP preferred for calibrated instruments |
| OPA134PA | Lower noise (8 nV/√Hz), higher GBW (8 MHz), wider supply range (±2.5 V to ±18 V), but higher quiescent current (4 mA) | Better suited for wide-bandwidth audio or low-voltage single-supply designs | Select OPA134PA when bandwidth >4.5 MHz or supply flexibility beyond ±15 V is required; TL051CP remains optimal for legacy TL07x drop-in upgrades |
Compared with TL071CP and OPA134PA, TL051CP uniquely balances precision (trimmed VIO), speed (4.5 MHz/17.8 V/μs), and backward compatibility - making it the most direct upgrade path for TL071-based designs needing improved DC stability without layout changes.
Availability
TL051CP is available at Aetrix Electronics and suitable for test equipment, industrial sensor interfaces, and audio signal conditioning requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TL051CP 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 decades of heritage in precision op-amp design and manufacturing.
The TL051CP belongs to TI's enhanced FET-input op-amp family, engineered specifically to upgrade legacy TL07x/TL08x circuits with improved DC accuracy, lower noise, and guaranteed pin compatibility - targeting instrumentation, audio, and industrial signal chains.
FAQ
What is the maximum supply voltage rating for TL051CP?
The TL051CP has an absolute maximum supply voltage rating of ±18 V. It is fully specified for reliable operation across ±5 V to ±15 V, with recommended operating conditions defining performance limits at those rails. Exceeding ±18 V risks permanent damage per TI's absolute maximum ratings table.
Does TL051CP support single-supply operation?
The TL051CP is designed for dual-supply operation and does not support true single-supply use without external DC biasing. Its common-mode input range and output swing require mid-rail referencing - typically implemented using TI's TLE2426 virtual ground generator or resistor divider networks to establish a stable ½ VCC reference point.
How does TL051CP differ from TL081CP in practical circuit design?
The TL051CP improves upon TL081CP with on-chip offset trimming (0.75 mV vs. 6.5 mV max VIO), lower input voltage noise (10.8 nV/√Hz vs. 18 nV/√Hz), and tighter input bias current control (20 pA typ vs. 2 nA typ). These differences directly reduce calibration overhead and improve SNR in high-impedance sensor interfaces.
Can TL051CP drive capacitive loads without oscillation?
The TL051CP remains stable with ≤25 pF capacitive loads. For larger loads (e.g., >1000 pF), a series resistor (typically 10–100 Ω) must be added between the output and load to isolate the capacitance and maintain ≥60° phase margin - as confirmed in TI's Figure 4-13 and Application Note SLOS178B Section 5.1.1.
Is TL051CP pin-compatible with TL071CP in PDIP-8 packages?
Yes, TL051CP is fully pin-compatible with TL071CP and TL081CP in the 8-pin PDIP package. Pin functions match exactly (IN–, IN+, VCC–, OUT, VCC+, NC), and both devices share identical footprint and thermal characteristics - enabling direct replacement without PCB modification.
TL051CP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- 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:
- 590 µV
- Current - Supply:
- 2.7mA
- 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:
- Through Hole
- Supplier Device Package:
- 8-PDIP
TL051CP FAQ
1.How can I place an order for TL051CP through Aetrix?
Please submit a Request for Quotation (RFQ) for TL051CP 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 TL051CP reliable?
The price and inventory of TL051CP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL051CP is usually 5 days.
3.What payment methods are accepted for TL051CP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL051CP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL051CP?
TL051CP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL051CP 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 TL051CP?
For technical support, including TL051CP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL051CP requirements.
6.How does Aetrix verify that TL051CP is sourced from the original manufacturer or authorized distributors?
All TL051CP 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 TL051CP meets industry standards.
7.What is the process for return or replacement of TL051CP?
All TL051CP units undergo pre-shipment inspection (PSI). If there is an issue with TL051CP, 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 TL051CP part is unused and in its original packaging.
Return procedure for TL051CP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL051CP Tags
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LM358DT
STMicroelectronics
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LM358DR
Texas Instruments
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LM2904DR
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LM358ADR
Texas Instruments
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LM2904DGKR
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MCP6006T-E/OT
Microchip Technology
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MCP6006UT-E/OT
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LM324PWR
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LM2902PWR
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LM2902DR
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LM358P
Texas Instruments
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