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Texas Instruments TL051IP
- Part No.:
- TL051IP
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
TL051IP.pdf
- Description:
- IC OPAMP JFET 1 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,109
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Product details
Overview
TL051IP from Texas Instruments is a single-channel FET-input operational amplifier with on-chip offset-voltage trimming, 4.5 MHz unity-gain bandwidth, 17.8 V/μs slew rate (±15 V), and 10¹² Ω input resistance-designed for precision low-noise signal conditioning in audio preamps, sensor interfaces, and test equipment.
For engineers reviewing the TL051IP datasheet, TL051IP pinout, TL051IP application, or TL051IP equivalent, key selection criteria include its enhanced DC accuracy over TL071/TL081, FET-input high-impedance advantage for high-Z sources, dual-supply operation constraints, and SOIC-8 package compatibility with legacy designs.
Technical Context
The TL051IP uses a JFET-input front-end architecture to achieve ultra-low input bias current (≤100 pA at 25°C) and high input impedance, enabling accurate amplification of microvolt-level signals from piezoelectric sensors or photodiode transimpedance stages. Its trimmed offset voltage (0.75 mV max at 25°C) and low drift (25 μV/°C) support stable DC-coupled gain without frequent recalibration.
It delivers improved AC performance versus TL081-4.5 MHz bandwidth and 17.8 V/μs slew rate at ±15 V-while maintaining quiescent current under 12.8 mA per amplifier. The device is fully specified across ±5 V and ±15 V supplies and requires dual-rail operation; single-supply use demands external DC biasing and virtual-ground generation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Unity-gain bandwidth | 4.5 MHz - supports stable closed-loop gain up to ~10× at 450 kHz without phase margin degradation |
| Slew rate (+) | 17.8 V/μs at ±15 V - enables clean 10 Vpp output at ≥1.8 MHz before slew limiting |
| Input offset voltage | 0.75 mV max (25°C) - reduces DC error to <7.5 mV in 10× gain stage, critical for precision instrumentation |
| Input bias current | 20 pA typ (25°C) - allows use with >100 MΩ source impedances without significant voltage drop |
| Common-mode input range | –11 V to +11 V at ±15 V supply - accommodates rail-to-rail input signals within 4 V of either supply |
| Supply voltage range | ±5 V to ±15 V - compatible with standard analog test benches and industrial control power rails |
| Input noise voltage | 10.8 nV/√Hz at 1 kHz - lower than TL081 (18 nV/√Hz), improving SNR in audio and sensor front-ends |
Pinout & Package
TL051IP is supplied in an 8-pin PDIP (Plastic Dual In-line Package) with body size 9.81 mm × 6.30 mm, through-hole mountable, RoHS-compliant, and rated for industrial temperature range (–40°C to +85°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | NC | No connection - must remain unconnected to avoid parasitic coupling or latch-up risk |
| 2 | IN– | Inverting input - accepts feedback network for stable closed-loop configurations (e.g., inverting amp, active filter) |
| 3 | IN+ | Non-inverting input - used for high-impedance signal injection in buffer, comparator, or instrumentation topologies |
| 4 | VCC– | Negative supply rail - must be connected to stable –5 V or –15 V; decoupling capacitor required near pin |
| 5 | NC | No connection - electrically isolated; no internal bond wire or circuit node |
| 6 | OUT | Amplifier output - drives loads ≥2 kΩ; series resistor needed for >1000 pF capacitive loads to prevent oscillation |
| 7 | VCC+ | Positive supply rail - must be connected to stable +5 V or +15 V; decoupling capacitor required near pin |
| 8 | NC | No connection - unused terminal; floating or grounded - both invalid per datasheet |
Key Features
| Feature | Design Value |
|---|---|
| On-chip offset-voltage trimming | Reduces initial VIO to ≤0.75 mV (C-grade), cutting DC calibration time and improving system-level accuracy in multi-stage analog chains |
| FET-input architecture | Delivers 10¹² Ω input resistance and ≤100 pA input bias current, enabling direct interface with high-Z sources like electret mics or pH electrodes |
| Enhanced slew rate & bandwidth | 17.8 V/μs slew rate and 4.5 MHz GBW exceed TL081 by >2×, supporting faster settling in data acquisition front-ends |
| Low 1/f noise corner | 50 nV/√Hz at 10 Hz - improves dynamic range in sub-audio applications (e.g., seismic sensors, ECG amplifiers) |
| Pin-compatible upgrade path | Direct replacement for TL071 and TL081 in existing SOIC-8 or PDIP-8 layouts, requiring no PCB changes |
Applications
| Audio Pre-amplifier | Piezoelectric Sensor Interface |
|---|---|
Use Scenario: Amplifying low-level microphone or instrument pickup signals before ADC conversion in studio mixers or portable recorders. IC Role / Device Role / Timing Role: Single-ended non-inverting amplifier with gain of 20–100×, providing high input impedance and low noise floor. Use Value: 10.8 nV/√Hz input noise and 4.5 MHz bandwidth preserve transient fidelity and harmonic content up to 20 kHz. | Use Scenario: Conditioning charge-output signals from accelerometers or ultrasonic transducers in structural health monitoring systems. IC Role / Device Role / Timing Role: Transimpedance amplifier with feedback capacitor for charge integration and low-frequency response extension. Use Value: 20 pA typical input bias current prevents signal loss across high-value feedback resistors (>1 GΩ), ensuring accurate low-g measurement. |
| Instrumentation Amplifier Front-End | DC-Coupled Precision Reference Buffer |
Use Scenario: Serving as input stage in 3-op-amp instrumentation amplifier for medical ECG or industrial strain gauge readouts. IC Role / Device Role / Timing Role: Differential pair driver with matched VIO and CMRR >84 dB, rejecting common-mode interference from 50/60 Hz mains. Use Value: Trimmed 0.75 mV offset and 25 μV/°C drift minimize baseline wander and thermal zero-shift over operating temperature. | Use Scenario: Buffering low-drift voltage references (e.g., REF5025) to drive ADC reference inputs or DAC feedback nodes. IC Role / Device Role / Timing Role: Unity-gain follower isolating reference source from load capacitance and switching noise. Use Value: 10¹² Ω input resistance prevents loading of reference's internal impedance, preserving long-term stability and accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL071CP | Higher input noise (18 nV/√Hz), no on-chip offset trim (typical VIO = 3 mV), 3 MHz GBW | Acceptable where cost is primary constraint and DC accuracy <5 mV is tolerable | Choose TL071CP only if budget limits prohibit TL051IP and system can absorb higher offset drift and noise |
| OPA134PA | Lower noise (8 nV/√Hz), higher GBW (8 MHz), rail-to-rail output, but higher supply current (4 mA vs 11.2 mA) | Better for wideband audio or fast-settling data acquisition where output swing to rails is required | Select OPA134PA when full-rail output swing or sub-10 nV/√Hz noise is mandatory; verify layout for stability with capacitive loads |
Compared with TL071CP and OPA134PA, TL051IP offers the optimal balance of trimmed DC accuracy, FET-input impedance, and proven industrial reliability-making it preferred for legacy upgrades and cost-sensitive precision analog designs where rail-to-rail output is not required.
Availability
TL051IP is available at Aetrix Electronics and suitable for audio pre-amplifiers, sensor signal conditioning, instrumentation front-ends, and DC-coupled reference buffering requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for TL051IP 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 power management ICs, with decades of heritage in precision op-amp design and manufacturing.
The TL051IP belongs to TI's enhanced FET-input op-amp product line, engineered specifically to upgrade TL07x/TL08x-based circuits with improved DC accuracy, AC speed, and noise performance-targeting test & measurement, industrial sensing, and professional audio.
FAQ
What is the maximum supply voltage rating for TL051IP?
The TL051IP has an absolute maximum supply voltage rating of ±18 V. It is fully specified for reliable operation across ±5 V and ±15 V dual supplies. Operation beyond ±15 V is not recommended for sustained use, as parameters such as input offset voltage drift and output swing may degrade outside the recommended conditions defined in the datasheet. Always observe thermal derating when operating near absolute maximum ratings.
Can TL051IP operate from a single supply?
TL051IP is designed for dual-supply operation and does not support true single-supply functionality. When used with a single supply, external DC biasing of both inputs and output is required, along with a mid-supply virtual ground (e.g., using TI's TLE2426). Input common-mode range and output swing are asymmetric relative to ground, so improper biasing risks clipping or saturation. For native single-supply applications, consider TI's TLC-series CMOS op-amps instead.
What is the input offset voltage specification for TL051IP at room temperature?
The TL051IP (C-suffix, plastic DIP package) has a maximum input offset voltage of 0.75 mV at 25°C, with a typical value of 3.5 mV. This trimmed specification reflects on-chip laser trimming, delivering significantly better DC accuracy than the untrimmed TL081 (typically 5–10 mV). Over the full 0°C to 70°C range, VIO remains ≤4.5 mV, making TL051IP suitable for applications demanding stable low-drift amplification without external nulling circuitry.
How does TL051IP compare to TL081 in terms of noise performance?
TL051IP provides superior noise performance versus TL081: its input voltage noise is 10.8 nV/√Hz at 1 kHz, compared to TL081's 18 nV/√Hz. At 10 Hz, TL051IP measures 50 nV/√Hz versus TL081's 70 nV/√Hz. This lower 1/f noise corner and broadband noise floor directly improve signal-to-noise ratio in low-frequency, high-gain applications such as ECG amplifiers or vibration sensor interfaces where TL081's higher noise would limit resolution.
Is TL051IP pin-compatible with TL071 and TL081?
Yes, TL051IP is fully pin-compatible with TL071CP and TL081CP in the same 8-pin PDIP package. Pin functions-including NC on pins 1, 5, and 8; IN– on pin 2; IN+ on pin 3; VCC– on pin 4; OUT on pin 6; and VCC+ on pin 7-are identical. No PCB layout changes are required for drop-in replacement, enabling immediate performance upgrades in existing designs without redesign effort or qualification delays.
TL051IP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LinCMOS™
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Bulk
- 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:
- 80 mA
- Voltage - Supply Span (Min):
- 10 V
- Voltage - Supply Span (Max):
- 30 V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
TL051IP FAQ
1.How can I place an order for TL051IP through Aetrix?
Please submit a Request for Quotation (RFQ) for TL051IP 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 TL051IP reliable?
The price and inventory of TL051IP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL051IP is usually 5 days.
3.What payment methods are accepted for TL051IP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL051IP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL051IP?
TL051IP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL051IP 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 TL051IP?
For technical support, including TL051IP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL051IP requirements.
6.How does Aetrix verify that TL051IP is sourced from the original manufacturer or authorized distributors?
All TL051IP 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 TL051IP meets industry standards.
7.What is the process for return or replacement of TL051IP?
All TL051IP units undergo pre-shipment inspection (PSI). If there is an issue with TL051IP, 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 TL051IP part is unused and in its original packaging.
Return procedure for TL051IP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL051IP Tags
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LM358DT
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LM358DR
Texas Instruments
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MCP6006T-E/OT
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MCP6006UT-E/OT
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LM2902DR
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LM358P
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