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Texas Instruments TL051CD
- Part No.:
- TL051CD
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TL051CD.pdf
- Description:
- IC OPAMP JFET 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,084
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Product details
Overview
TL051CD from Texas Instruments is a single-channel FET-input operational amplifier engineered 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), and 0.75 mV max input offset voltage (C-grade, 25°C), enabling high-fidelity amplification of low-level sensor signals in instrumentation and audio front-ends.
For engineers reviewing the TL051CD datasheet, TL051CD pinout, TL051CD application, or TL051CD equivalent, key selection criteria include its enhanced DC accuracy over TL07x/TL08x families, on-chip offset trimming, FET-input impedance >10¹² Ω, and compatibility with ±5 V to ±15 V supplies - critical for upgrading legacy designs or designing new high-impedance interface circuits.
Technical Context
The TL051CD employs a JFET-input stage paired with bipolar output transistors, achieving high input impedance without sacrificing output drive capability. Its internal architecture includes trimmed offset voltage circuitry and optimized compensation for stable unity-gain operation with up to 100 pF capacitive load.
It operates across 0°C to 70°C (C-suffix) and is fully specified at both ±5 V and ±15 V supply rails. Common-mode input range extends to ±11 V at ±15 V supplies, and output swing reaches ±13.9 V into 10 kΩ - supporting wide dynamic range in precision measurement paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Unity-gain bandwidth | 4.5 MHz - supports stable amplification of signals up to audio band without external compensation |
| Slew rate (+) | 17.8 V/μs at ±15 V - enables faithful reproduction of fast-rising edges in pulse and transient applications |
| Input offset voltage | 0.75 mV max (25°C, C-grade) - reduces DC error in precision gain stages and sensor bridges |
| Input bias current | 20 pA typical (25°C) - preserves signal integrity when interfacing with high-impedance sources like piezoelectric sensors |
| Common-mode rejection | 84 dB min (25°C) - suppresses noise coupled equally to both inputs in differential sensing configurations |
| Supply voltage range | ±5 V to ±15 V - allows flexible rail selection for low-power or high-dynamic-range system partitioning |
| Input resistance | >10¹² Ω - prevents loading of high-Z sources such as pH electrodes or photodiode transimpedance nodes |
Pinout & Package
TL051CD is supplied in an 8-pin SOIC (D package) with nominal body size 4.90 mm × 3.90 mm, surface-mount compatible, and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | No connect | Internally unconnected; must remain floating or grounded per layout best practice |
| 2 | Inverting input | Primary feedback node in standard op-amp configurations; high-impedance FET input |
| 3 | Non-inverting input | Reference input for follower, summing, or differential configurations; identical impedance to Pin 2 |
| 4 | Negative supply | Return path for internal biasing; requires low-impedance decoupling near device |
| 5 | No connect | Internally unconnected; must remain floating or grounded |
| 6 | Output | Class-AB buffered output capable of ±80 mA short-circuit current and ±13.9 V swing into 10 kΩ |
| 7 | Positive supply | Power rail input; requires local 0.1 μF ceramic decoupling to minimize supply-induced noise |
| 8 | No connect | Internally unconnected; must remain floating or grounded |
Key Features
| Feature | Design Value |
|---|---|
| On-chip offset-voltage trimming | Reduces initial DC error to ≤0.75 mV, minimizing need for external nulling in production calibration |
| FET-input architecture | Delivers >10¹² Ω input resistance and ≤20 pA bias current - essential for microvolt-level source interfacing |
| Enhanced AC performance | 4.5 MHz bandwidth and 17.8 V/μs slew rate exceed TL07x/TL08x while maintaining same quiescent current |
| Pin-compatible upgrade path | Direct replacement for TL071 and TL081 in existing PCB layouts, enabling performance uplift without redesign |
| Low input voltage noise | 10.8 nV/√Hz at 1 kHz - preserves SNR in low-amplitude signal chains where thermal noise dominates |
Applications
| Medical ECG Front-End | Industrial Strain-Gauge Amplifier |
|---|---|
Use Scenario: Amplifying millivolt-level biopotential signals from dry electrodes with minimal added noise and drift. IC Role / Device Role / Timing Role: Primary gain-stage amplifier in a 3-op-amp instrumentation topology, configured for G = 100 with guarded inputs. Use Value: 0.75 mV max VIO and 10.8 nV/√Hz noise ensure baseline stability and diagnostic-grade resolution without post-acquisition correction. | Use Scenario: Conditioning Wheatstone bridge outputs from load cells in factory automation weighing systems. IC Role / Device Role / Timing Role: First-stage differential amplifier with matched resistor network, rejecting common-mode supply ripple and thermal EMF. Use Value: 84 dB CMRR and ±11 V VICR at ±15 V enable accurate mV/V bridge measurements despite noisy industrial power rails. |
| Audio Preamp for Piezo Sensors | Test Equipment Signal Generator Buffer |
Use Scenario: High-impedance buffering of ceramic microphone or contact pickup signals prior to ADC sampling. IC Role / Device Role / Timing Role: Unity-gain voltage follower with guard ring layout, isolating fragile piezo source from cable capacitance and board leakage. Use Value: 20 pA IIB and >10¹² Ω RIN prevent signal attenuation and low-frequency droop in multi-second time-constant coupling networks. | Use Scenario: Driving 50 Ω coaxial cables and reactive loads in automated test equipment waveform outputs. IC Role / Device Role / Timing Role: Low-distortion output buffer stage with series 22 Ω resistor to dampen resonance from cable capacitance. Use Value: 0.00021% THD and 17.8 V/μs slew rate support clean 10 Vpp sine waves up to 100 kHz without slewing artifacts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL071CD | Higher input offset (3 mV max), lower slew rate (13 V/μs), no on-chip trimming | Acceptable where cost sensitivity outweighs precision requirements; higher noise floor (18 nV/√Hz) | Choose TL071CD only if legacy design reuse or BOM consolidation justifies reduced DC/AC performance |
| OPA134UA | Lower VIO (0.5 mV max), higher SR (20 V/μs), wider supply range (±4 to ±18 V), higher price | Better suited for ultra-low-noise audio and portable battery-powered instruments requiring rail flexibility | Select OPA134UA when 10.8 nV/√Hz noise and ±15 V operation are insufficient for target SNR or supply constraints |
Compared with TL071CD, TL051CD offers tighter offset, faster response, and lower noise - making it superior for precision upgrades; versus OPA134UA, TL051CD provides cost-effective performance parity in fixed ±15 V systems but lacks extended supply flexibility and sub-0.5 mV offset.
Availability
TL051CD is available at Aetrix Electronics and suitable for medical instrumentation, industrial sensor interfaces, and test equipment requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for TL051CD 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 TL05x family was developed to deliver enhanced DC accuracy and AC speed over legacy TL07x/TL08x op-amps while maintaining pin compatibility - targeting instrumentation, audio, and industrial signal conditioning applications.
FAQ
What is the maximum capacitive load the TL051CD can drive without oscillation?
The TL051CD is specified for stable operation with up to 100 pF capacitive load under standard test conditions. For larger loads (e.g., >1000 pF), a series isolation resistor (typically 22–100 Ω) between the output and load is required to maintain phase margin above 60° and prevent ringing or oscillation - as confirmed in TI's SLOS178B Figure 4-13 and Section 5.1.1.
Does the TL051CD support single-supply operation?
The TL051CD is characterized for dual-supply operation (±5 V to ±15 V) and does not feature rail-to-rail input or output. When used in single-supply configurations, external DC biasing of inputs to mid-rail and use of a virtual ground (e.g., TI TLE2426) are mandatory to stay within common-mode and output swing limits - per Section 2 of the datasheet.
How does the TL051CD differ from the TL051AC variant?
The TL051CD is the commercial-grade version (0°C to 70°C), with max input offset voltage of 0.75 mV at 25°C. The TL051AC is the advanced commercial variant, offering tighter offset (0.57 mV max at 25°C) and improved temperature coefficient (23 μV/°C vs. 25 μV/°C), making it preferable for applications demanding higher initial accuracy and thermal stability.
Can unused pins on the TL051CD be left floating?
Pins 1, 5, and 8 of the TL051CD are designated "No Connect" (NC) and must not be tied to any voltage or signal. They are internally unconnected and should remain floating - though grounding them via 100 kΩ resistors is acceptable for ESD protection if layout constraints require termination, per Table 3-1 in SLOS178B.
What is the typical supply current consumption of the TL051CD at ±15 V?
At ±15 V supply and 25°C, the TL051CD draws 8.4 mA typical supply current (ICC) with no load, as specified in Section 4.4 of the datasheet. This value remains stable across temperature (7.9–8.5 mA from 0°C to 70°C), supporting predictable power budgeting in multi-channel analog subsystems.
TL051CD 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:
- 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:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TL051CD FAQ
1.How can I place an order for TL051CD through Aetrix?
Please submit a Request for Quotation (RFQ) for TL051CD 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 TL051CD reliable?
The price and inventory of TL051CD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL051CD is usually 5 days.
3.What payment methods are accepted for TL051CD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL051CD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL051CD?
TL051CD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL051CD 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 TL051CD?
For technical support, including TL051CD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL051CD requirements.
6.How does Aetrix verify that TL051CD is sourced from the original manufacturer or authorized distributors?
All TL051CD 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 TL051CD meets industry standards.
7.What is the process for return or replacement of TL051CD?
All TL051CD units undergo pre-shipment inspection (PSI). If there is an issue with TL051CD, 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 TL051CD part is unused and in its original packaging.
Return procedure for TL051CD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL051CD 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
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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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LM2902DR
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LM358P
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