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Texas Instruments TL051CPG4
- Part No.:
- TL051CPG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
TL051CPG4.pdf
- Description:
- IC OPAMP JFET 1 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,306
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Product details
Overview
TL051CPG4 from Texas Instruments is a single-channel FET-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), 0.65 mV max input offset voltage (C-grade, ±15 V), and 1012 Ω input resistance - enabling high-fidelity amplification of low-level sensor outputs and audio pre-amplification stages.
For engineers reviewing the TL051CPG4 datasheet, TL051CPG4 pinout, TL051CPG4 application, or TL051CPG4 equivalent, key selection criteria include its on-chip offset-voltage trimming for stable DC performance, FET-input architecture for ultra-low bias current (10 pA typ), compatibility with ±5 V to ±15 V supplies, and direct pin-for-pin upgrade path from TL071 and TL081 in legacy designs.
Technical Context
The TL051CPG4 uses an enhanced JFET-input process to achieve improved AC response over TL07x/TL08x while maintaining low noise (10.8 nV/√Hz at 1 kHz) and low power (8.4 mA max supply current at ±15 V). Its internal compensation ensures stability with capacitive loads up to 100 pF without external compensation.
Designed for dual-supply operation, it requires attention to common-mode input voltage limits (–12.3 V to +15.1 V at ±15 V) and output swing (±12.7 V into 2 kΩ), making virtual-ground biasing essential for single-supply use - supported by companion devices like the TLE2426.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Unity-gain bandwidth | 4.5 MHz - supports stable closed-loop gain ≥1 up to audio and instrumentation frequencies without peaking |
| Slew rate (+) | 17.8 V/μs at ±15 V - enables faithful reproduction of fast-rising signals such as pulse edges or transient sensor events |
| Input offset voltage | 0.65 mV max (TL051C, ±15 V, 25°C) - reduces DC error in precision gain stages and sensor front-ends |
| Input bias current | 30 pA max (±15 V, 25°C) - preserves signal integrity when interfacing with high-impedance sources (e.g., piezoelectric sensors) |
| Common-mode rejection | 92 dB min (±15 V, 25°C) - suppresses noise coupled equally onto both inputs in noisy industrial environments |
| Supply voltage range | ±5 V to ±15 V - supports standard dual-rail lab and industrial supply rails without regulation overhead |
| Input resistance | 1012 Ω - prevents loading of high-Z transducers and passive filter networks |
Pinout & Package
The TL051CPG4 is supplied in an 8-pin PDIP (Plastic Dual In-line Package) with body size 9.81 mm × 6.30 mm, suitable for through-hole prototyping and legacy PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | No-connect | Internally unconnected; must remain floating or tied to ground only if required by board layout EMI mitigation |
| 2 | Inverting input | Primary feedback node in inverting amplifier configurations; sensitive to stray capacitance and PCB leakage |
| 3 | Non-inverting input | Reference input for non-inverting gain stages; requires guard ring routing in high-impedance applications |
| 4 | Negative supply | Return path for internal JFET biasing; must be decoupled locally with 0.1 μF ceramic capacitor |
| 5 | No-connect | Internally unconnected; no external connection permitted |
| 6 | Output | Capable of sourcing/sinking ±80 mA; requires series resistor for >100 pF capacitive loads to prevent oscillation |
| 7 | Positive supply | Power rail for internal amplifier stages; decoupling critical for noise-sensitive applications |
| 8 | No-connect | Internally unconnected; must not be tied to any voltage or signal |
Key Features
| Feature | Design Value |
|---|---|
| On-chip offset-voltage trimming | Reduces initial DC error to ≤0.65 mV (±15 V), minimizing calibration burden in production test |
| FET-input architecture | Delivers 1012 Ω input resistance and 10 pA typical input bias current - ideal for pH electrodes and photodiode transimpedance amps |
| Pin-compatible upgrade path | Direct replacement for TL071 and TL081 in existing PCBs, preserving layout while improving bandwidth and slew rate |
| Low 1/f noise corner | 50 nV/√Hz at 10 Hz enables stable low-frequency amplification in seismic and biomedical signal chains |
| Stable with 100 pF load | Eliminates need for external compensation in most buffered output applications, simplifying design validation |
Applications
| Audio Pre-amplifier | High-Impedance Sensor Interface |
|---|---|
Use Scenario: Amplifying microphone or phono cartridge signals before ADC sampling in studio-grade audio equipment. IC Role / Device Role / Timing Role: Single-ended, non-inverting gain stage with adjustable gain (10–100×) and DC-coupled output. Use Value: Ultra-low input current (30 pA max) prevents loading of high-Z magnetic cartridges; 10.8 nV/√Hz noise floor preserves dynamic range. | Use Scenario: Conditioning output from piezoelectric accelerometers or glass pH electrodes in industrial monitoring systems. IC Role / Device Role / Timing Role: High-input-impedance buffer and first-stage amplifier with guarded input traces. Use Value: 1012 Ω input resistance avoids signal attenuation; on-chip trimming ensures <1 mV offset drift over temperature. |
| Instrumentation Amplifier Front-end | Test & Measurement Signal Conditioning |
Use Scenario: Input stage of a three-op-amp instrumentation amplifier for strain gauge bridge readout in load cells. IC Role / Device Role / Timing Role: Differential pair driver with matched input offset and CMRR >90 dB. Use Value: 92 dB CMRR minimizes common-mode interference from motor drives; low THD (0.00021%) preserves harmonic fidelity. | Use Scenario: Active filtering and level-shifting of analog signals in automated test equipment (ATE) channel modules. IC Role / Device Role / Timing Role: Precision gain block with calibrated offset null capability and wide supply tolerance (±5 V to ±15 V). Use Value: ±15 V operation supports full-scale 10 Vpp signal handling; 4.5 MHz bandwidth accommodates fast step-response verification. |
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 offset (3 mV max), lower slew rate (13 V/μs), no on-chip trimming | Acceptable where cost is primary and DC accuracy less critical | Choose TL071CP only if legacy qualification or BOM cost reduction outweighs need for improved offset and speed |
| OPA140AIDBVR | CMOS input (0.3 pA bias), rail-to-rail output, 11 MHz bandwidth, higher price | Better for single-supply, low-voltage, or ultra-high-Z (>1 GΩ) applications | Choose OPA140AIDBVR when input bias current <1 pA or rail-to-rail swing is mandatory |
Compared with TL071CP, TL051CPG4 provides tighter offset and faster response at identical pinout and price tier; compared with OPA140AIDBVR, it offers proven ruggedness in ±15 V industrial systems but lacks rail-to-rail output and sub-picoamp bias current.
Availability
TL051CPG4 is available at Aetrix Electronics and suitable for audio pre-amplification, high-impedance sensor interfacing, and instrumentation amplifier front-ends requiring stable component supply across industrial, test & measurement, and legacy system repair programs.
Supply support for TL051CPG4 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 expertise in precision op-amps and signal-chain solutions.
The TL05x family was designed specifically to upgrade TL07x/TL08x-based circuits with improved DC accuracy and AC performance - targeting industrial instrumentation, audio, and sensor signal conditioning where FET-input benefits are critical.
FAQ
What is the maximum capacitive load the TL051CPG4 can drive without oscillation?
The TL051CPG4 is internally compensated for stable operation with up to 100 pF capacitive load at the output. For loads exceeding 100 pF - such as long cables or ADC input capacitance - a small series resistor (typically 22–100 Ω) between the TL051CPG4 output and the load restores phase margin and prevents ringing. This behavior is documented in Section 5.1.1 of the TL051CPG4 datasheet.
Does the TL051CPG4 support single-supply operation?
The TL051CPG4 is specified for dual-supply operation (±5 V to ±15 V) and does not feature rail-to-rail input or output. When used from a single supply, the input common-mode range and output swing require DC biasing - typically via a mid-supply virtual ground (e.g., TI's TLE2426) and input coupling capacitors. The TL051CPG4 itself does not integrate this functionality.
How does the TL051CPG4 differ from the TL051ACP variant?
The TL051CPG4 is the commercial-grade (C-suffix) version with input offset voltage ≤0.65 mV (±15 V, 25°C), while the TL051ACP is the precision A-grade variant with tighter offset ≤0.5 mV under identical conditions. Both share identical pinout, package, bandwidth, and slew rate - the difference lies solely in factory-trimmed DC performance, with TL051ACP targeted at higher-accuracy applications.
Can the TL051CPG4 replace a TL081 in an existing circuit?
Yes - the TL051CPG4 is pin-compatible with the TL081 and TL071 in 8-pin PDIP and SOIC packages. It improves upon both with lower input offset voltage, higher slew rate (17.8 V/μs vs. 13 V/μs), and better noise performance. No PCB changes are required, though designers should verify stability with existing capacitive loads due to its higher bandwidth.
What is the thermal resistance (θJA) of the TL051CPG4 in PDIP package?
The TL051CPG4 in PDIP (P) package has a junction-to-ambient thermal resistance (θJA) of 85°C/W, as specified in Section 4.2 of the datasheet. This value assumes standard JEDEC 2-layer board conditions; actual thermal performance depends on PCB copper area, airflow, and nearby heat sources.
TL051CPG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- 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:
- 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
TL051CPG4 FAQ
1.How can I place an order for TL051CPG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TL051CPG4 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 TL051CPG4 reliable?
The price and inventory of TL051CPG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL051CPG4 is usually 5 days.
3.What payment methods are accepted for TL051CPG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL051CPG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL051CPG4?
TL051CPG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL051CPG4 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 TL051CPG4?
For technical support, including TL051CPG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL051CPG4 requirements.
6.How does Aetrix verify that TL051CPG4 is sourced from the original manufacturer or authorized distributors?
All TL051CPG4 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 TL051CPG4 meets industry standards.
7.What is the process for return or replacement of TL051CPG4?
All TL051CPG4 units undergo pre-shipment inspection (PSI). If there is an issue with TL051CPG4, 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 TL051CPG4 part is unused and in its original packaging.
Return procedure for TL051CPG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL051CPG4 Tags
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LM358DT
STMicroelectronics
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LM358DR
Texas Instruments
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LM2904DR
Texas Instruments
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LM358ADR
Texas Instruments
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LM2904DGKR
Texas Instruments
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LM324DR
Texas Instruments
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MCP6006T-E/OT
Microchip Technology
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MCP6006UT-E/OT
Microchip Technology
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LM324PWR
Texas Instruments
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LM2902PWR
Texas Instruments
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LM2902DR
Texas Instruments
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LM358P
Texas Instruments
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