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Texas Instruments TL051CDR
- Part No.:
- TL051CDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TL051CDR.pdf
- Description:
- IC OPAMP JFET 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,738
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Product details
Overview
TL051CDR 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), and 0.75 mV max input offset voltage (25°C, ±5 V), enabling high-fidelity amplification of low-level sensor signals and audio waveforms. Its 10¹² Ω input resistance and 10.8 nV/√Hz input voltage noise at 1 kHz make it suitable for photodiode preamplifiers and high-impedance transducer interfaces.
For engineers reviewing the TL051CDR datasheet, TL051CDR pinout, TL051CDR application, or TL051CDR equivalent, this page provides verified specifications, SOIC-8 package details, real-world use cases in instrumentation and signal chain design, and two confirmed alternative op-amps with documented functional trade-offs.
Technical Context
The TL051CDR implements a BIFET (bipolar + JFET) architecture: JFET input stage ensures ultra-low input bias current (≤100 pA at 25°C) and high input impedance, while bipolar output stage delivers robust 80 mA output drive capability. It features on-chip offset-voltage trimming to achieve tighter DC accuracy than TL07x/TL08x predecessors without increasing quiescent current.
Designed for ±5 V to ±15 V operation, it maintains stable phase margin (60°) and unity-gain bandwidth across temperature (0°C to 70°C), with common-mode input range extending to within 1.5 V of rails at ±15 V. Its noise performance (50 nV/√Hz at 10 Hz) and THD of 0.00021% support high-resolution measurement applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | ±5 V to ±15 V - supports standard dual-rail industrial and test equipment power domains |
| Unity-Gain Bandwidth | 4.5 MHz - enables stable closed-loop gain ≥1 up to audio and low-speed data acquisition frequencies |
| Slew Rate | 17.8 V/μs (±15 V) - preserves fast transient fidelity in pulse amplification and active filter stages |
| Input Offset Voltage | 0.75 mV max (25°C, ±5 V) - reduces DC error in precision gain stages and sensor front-ends |
| Input Bias Current | 20 pA typ (25°C) - minimizes voltage drop across high-impedance sources like piezoelectric sensors |
| CMRR | 84 dB min (25°C, ±15 V) - rejects common-mode interference in noisy industrial environments |
| THD | 0.00021% - meets requirements for low-distortion audio buffering and spectral analysis circuits |
Pinout & Package
TL051CDR is housed in an 8-pin SOIC (D) package measuring 4.90 mm × 3.90 mm, compatible with automated SMT assembly and standard PCB footprints for industry-standard op-amps.
| 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; high-impedance JFET gate input |
| 3 | Non-Inverting Input (IN+) | Reference input for non-inverting gain stages; matched to IN– for CMRR optimization |
| 4 | Negative Supply (VCC–) | Return path for dual-supply operation; must be decoupled to ground with 0.1 μF ceramic capacitor |
| 5 | No Connect (NC) | Internally unconnected - must remain floating; no external connection permitted |
| 6 | Output (OUT) | Class-AB buffered output capable of ±80 mA drive into 2 kΩ loads |
| 7 | Positive Supply (VCC+) | Power rail for dual-supply operation; requires local 0.1 μF ceramic decoupling |
| 8 | No Connect (NC) | Internally unconnected - must remain floating; no external connection permitted |
Key Features
| Feature | Design Value |
|---|---|
| On-chip offset trimming | Reduces initial VIO to ≤0.75 mV (C-grade), cutting calibration time in production test fixtures |
| FET input stage | 10¹² Ω input resistance enables direct interfacing with >1 MΩ source impedances without signal loss |
| Low 1/f noise | 50 nV/√Hz at 10 Hz supports stable DC-coupled amplification in precision weighing and strain gauge bridges |
| Pin-compatible upgrade | Direct replacement for TL071 and TL081 in existing layouts - no PCB revision required |
| Single-supply adaptability | Operates with mid-rail virtual ground (e.g., TLE2426) for sensor signal conditioning in battery-powered systems |
Applications
| Photodiode Signal Amplification | Industrial Sensor Interface |
|---|---|
|
Use Scenario: Amplifying nanoamp-level photocurrent from silicon photodiodes in optical smoke detectors. IC Role / Device Role / Timing Role: Transimpedance amplifier with 10⁶ Ω feedback resistor, configured for DC-coupled response. Use Value: Ultra-low input bias current (20 pA typ) prevents signal corruption; 10.8 nV/√Hz noise preserves SNR in low-light conditions. |
Use Scenario: Conditioning millivolt outputs from RTD and thermocouple transmitters in PLC analog input modules. IC Role / Device Role / Timing Role: Precision non-inverting amplifier with gain = 100, referenced to isolated system ground. Use Value: 0.75 mV max VIO and 84 dB CMRR minimize thermal drift and EMI-induced errors in 16-bit ADC front-ends. |
| Audio Line Driver | Instrumentation Amplifier Core |
|
Use Scenario: Driving 600 Ω professional audio lines from DAC outputs in studio mixing consoles. IC Role / Device Role / Timing Role: Unity-gain buffer with low THD and wide bandwidth to preserve harmonic integrity. Use Value: 0.00021% THD and 4.5 MHz bandwidth ensure full 20 Hz–20 kHz frequency response without coloration. |
Use Scenario: First-stage differential amplifier in three-op-amp instrumentation circuits for medical ECG front-ends. IC Role / Device Role / Timing Role: High-Z input pair (U1A/U1B) providing gain and common-mode rejection before final stage. Use Value: Matched input characteristics and low VIO drift (<0.04 μV/month) maintain baseline stability during long-duration patient monitoring. |
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 |
|---|---|---|---|
| TL071CDR | Higher 18 nV/√Hz input noise at 1 kHz; 12 V/μs slew rate; no on-chip offset trimming | Acceptable where cost sensitivity outweighs need for lowest noise or tightest DC accuracy | Choose TL071CDR only when legacy design reuse or BOM simplification justifies higher noise and VIO |
| OPA140AIDR | CMOS input (0.3 pA IIB); rail-to-rail output; 11 MHz GBW; higher $/unit and different pinout | Required for single-supply systems or when output swing to rail is mandatory | Choose OPA140AIDR when rail-to-rail output or sub-picoamp bias current is essential - not a drop-in replacement |
Compared with TL071CDR, TL051CDR offers lower noise and trimmed offset for precision DC-coupled designs; compared with OPA140AIDR, it provides proven dual-supply stability and SOIC-8 footprint compatibility at lower cost, but lacks rail-to-rail output and ultra-low bias current.
Availability
TL051CDR is available at Aetrix Electronics and suitable for photodiode amplification, industrial sensor interface, and audio line driving requiring stable component supply, long-term lifecycle support, and consistent parametric performance across manufacturing lots.
Supply support for TL051CDR 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 over 50 years of op-amp innovation and broad industrial qualification.
The TL05x family was engineered to deliver enhanced DC precision and AC speed over TL07x/TL08x while maintaining pin compatibility - targeting instrumentation, test equipment, and high-fidelity signal chains.
FAQ
What is the maximum capacitive load the TL051CDR can drive without oscillation?
The TL051CDR is specified for stable operation with ≤10 pF load capacitance. Driving larger capacitive loads (e.g., >100 pF) risks peaking or oscillation due to phase margin degradation. For 1000 pF loads, add a 10–100 Ω series resistor between TL051CDR output and the load capacitance to restore stability - verified in TI's Application Report SLOA058.
Does TL051CDR support single-supply operation?
TL051CDR is designed for dual-supply use but can operate from a single supply when biased using a virtual ground (e.g., TLE2426). Input common-mode range extends to within 1.5 V of rails at ±15 V, so with +10 V and GND supply, inputs must stay between 1.5 V and 8.5 V. DC coupling requires careful level-shifting of both input and output references.
How does TL051CDR differ from TL081CDR in practical circuit performance?
TL051CDR improves upon TL081CDR with 30% higher slew rate (17.8 vs. 13 V/μs), 50% lower input offset voltage (0.75 mV vs. 1.5 mV max), and 40% lower 1 kHz input voltage noise (10.8 vs. 18 nV/√Hz). These yield tighter DC accuracy, faster settling in pulse applications, and better SNR in low-level signal paths - all without increased supply current.
Is TL051CDR RoHS compliant and halogen-free?
Yes, TL051CDR is RoHS compliant (per TI's PPAP documentation) and halogen-free. The SOIC-8 package (D) uses lead-free matte tin plating and meets JEDEC J-STD-020 moisture sensitivity level 3. Full compliance documentation, including substance declarations and test reports, is accessible via TI's Quality & Environmental page for TL051CDR.
Can unused channels in multi-amplifier variants be left unconnected?
No - unused amplifiers in TL05x devices (including TL052/TL054) must be configured as unity-gain buffers with inputs tied to a valid common-mode voltage (e.g., mid-supply) to prevent oscillation or excessive current draw. For TL051CDR, this does not apply as it contains only one amplifier channel.
TL051CDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TL051CDR FAQ
1.How can I place an order for TL051CDR through Aetrix?
Please submit a Request for Quotation (RFQ) for TL051CDR 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 TL051CDR reliable?
The price and inventory of TL051CDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL051CDR is usually 5 days.
3.What payment methods are accepted for TL051CDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL051CDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL051CDR?
TL051CDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL051CDR 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 TL051CDR?
For technical support, including TL051CDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL051CDR requirements.
6.How does Aetrix verify that TL051CDR is sourced from the original manufacturer or authorized distributors?
All TL051CDR 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 TL051CDR meets industry standards.
7.What is the process for return or replacement of TL051CDR?
All TL051CDR units undergo pre-shipment inspection (PSI). If there is an issue with TL051CDR, 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 TL051CDR part is unused and in its original packaging.
Return procedure for TL051CDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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