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Texas Instruments TLE2081CD
- Part No.:
- TLE2081CD
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLE2081CD.pdf
- Description:
- IC OPAMP JFET 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,903
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Product details
Overview
TLE2081CD from Texas Instruments is a single-channel Excalibur high-speed JFET-input operational amplifier designed for precision AC-coupled signal conditioning in ±2.25V to ±19V supply systems. It delivers 10.6 MHz unity-gain bandwidth, 32 V/μs slew rate, and 28 nV/√Hz input voltage noise at 1 kHz with ±5V supplies - enabling accurate high-speed data acquisition and oscilloscope front-end amplification.
For engineers reviewing the TLE2081CD datasheet, TLE2081CD pinout, TLE2081CD application, or TLE2081CD equivalent, this device serves as a direct upgrade path from TL081 while supporting wider dynamic range, higher bandwidth, and improved DC precision in battery-powered test equipment, industrial metering, and flight control analog signal chains.
Technical Context
The TLE2081CD uses a JFET-input stage with high-impedance differential pair architecture, delivering 100 MΩ common-mode and 6 TΩ differential input resistance. Its internal compensation ensures stable unity-gain operation with ≥56° phase margin into 2 kΩ loads and 25 pF capacitive loads.
It operates across 0°C to 70°C ambient temperature with ±2.25V to ±19V dual-supply capability, supporting rail-to-rail output swing up to ±14.5 V at ±15 V supplies and ±4.5 V at ±5 V supplies under 20 mA load - critical for wide-dynamic-range sensor interface and audio preamplifier stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Unity-gain bandwidth | 10.6 MHz - enables stable closed-loop gain ≥1 with ≤0.1% gain error up to 100 kHz in non-inverting configurations |
| Slew rate | 32 V/μs - supports full-scale 10 Vpp output transitions in <313 ns without slewing distortion |
| Input offset voltage (max) | 6 mV at 25°C - ensures ≤0.12% initial DC error in 5 V full-scale measurement circuits |
| Supply voltage range | ±2.25 V to ±19 V - accommodates both low-power portable designs and high-voltage industrial signal conditioning |
| Input voltage noise | 28 nV/√Hz at 1 kHz (±5 V) - maintains SNR >85 dB in 20 kHz bandwidth applications |
| Common-mode input range | –10.9 V to +15 V at ±15 V supplies - allows direct interfacing to bipolar sensors and transducers |
| Output current (short-circuit) | ±65 mA - drives 100 Ω loads or multiple CMOS inputs without external buffering |
Pinout & Package
Package: SOIC-8 (D), 4.9 mm × 6.0 mm body size with standard 1.27 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | No connect | Internally unused; must remain unconnected to avoid parasitic coupling |
| 2 | Inverting input (IN–) | High-impedance JFET node; requires guarded trace routing to minimize leakage-induced offset drift |
| 3 | Non-inverting input (IN+) | Differential input terminal; matched to Pin 2 for optimal CMRR performance |
| 4 | Negative supply (VCC–) | Return path for bias current and output stage; decoupling capacitor required within 1 cm |
| 5 | No connect | Not bonded; floating connection avoids unintended capacitance or ESD paths |
| 6 | Output (OUT) | Class-AB push-pull stage capable of sourcing/sinking 20 mA continuously into resistive loads |
| 7 | Positive supply (VCC+) | Primary power rail; requires local 0.1 μF ceramic + 4.7 μF tantalum decoupling |
| 8 | No connect | Unused pad; no internal connection; PCB copper should be removed beneath |
Key Features
| Feature | Design Value |
|---|---|
| Direct TL081 upgrade | Pins 1–8 compatible with TL081CP/CD; same footprint and basic biasing, enabling drop-in replacement without layout change |
| Wider supply rails | ±19 V operation extends dynamic range by 2.4× versus TL081's ±15 V limit - reduces clipping in high-amplitude sensor outputs |
| Low input bias current | 15–175 nA max at 25°C - minimizes voltage error across high-Z source impedances (>100 kΩ) in piezoelectric or pH probe interfaces |
| High slew rate | 32 V/μs - preserves fidelity of fast transient signals (e.g., pulse-width modulated motor feedback) without rise-time degradation |
| Low THD+N | 0.0032% at 1 kHz - meets audio-grade line-driver requirements and high-resolution ADC driver specs |
Applications
| Oscilloscope Front-End Amplifier | Digital Multimeter Analog Signal Chain |
|---|---|
Use Scenario: Amplifying and conditioning low-level probe signals before digitization in 100 MHz bandwidth bench oscilloscopes. IC Role / Device Role / Timing Role: Primary gain stage with unity-gain stable configuration, driving 50 Ω coaxial cable and ADC input. Use Value: 10.6 MHz bandwidth and 32 V/μs slew rate preserve edge integrity of fast pulses; ±19 V rails support ±10 V full-scale input ranges. |
Use Scenario: Precision DC amplification and filtering of shunt voltage drops in 6½-digit handheld DMMs. IC Role / Device Role / Timing Role: Low-drift, low-noise instrumentation amplifier front-end with programmable gain. Use Value: 6 mV max input offset and 28 nV/√Hz noise ensure <0.01% measurement accuracy over 0–10 V range at 25°C. |
| Flight Control Unit Sensor Interface | AC Charging Station Voltage Monitoring |
Use Scenario: Conditioning analog outputs from inertial measurement units (IMUs) and air data sensors in avionics subsystems. IC Role / Device Role / Timing Role: High-reliability signal buffer and level-shifter between isolated sensor domains and ADC inputs. Use Value: 100 MΩ input resistance prevents loading of high-impedance bridge sensors; ±19 V tolerance handles transients per DO-160 Section 22. |
Use Scenario: Isolated DC bus voltage sensing and feedback in 3-phase EV charging stations operating up to 1000 VDC. IC Role / Device Role / Timing Role: High-common-mode rejection amplifier in resistive divider-based monitoring circuitry. Use Value: 85 dB CMRR and –10.9 V to +15 V common-mode range enable accurate 0–900 V measurements using 1000:1 dividers with ±15 V supplies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed JFET-input op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL081CD | Lower 3 MHz bandwidth, 13 V/μs slew rate, ±15 V max supply, 15 mV max VIO | Limited to ≤50 kHz small-signal applications; insufficient for oscilloscope front-ends or fast-settling data acquisition | Select when cost sensitivity outweighs speed/precision needs and ±15 V rails suffice |
| OPA2134PA | 10 MHz bandwidth, 20 V/μs slew rate, ±18 V max supply, 0.5 mV max VIO, FET input | Better DC precision and lower noise (8 nV/√Hz), but lower slew rate limits large-signal response | Prefer for audio or precision DC-coupled systems where settling time <1 μs is not required |
Compared with TL081CD and OPA2134PA, the TLE2081CD uniquely balances high slew rate (32 V/μs), wide supply (±19 V), and moderate offset (6 mV) - making it optimal for AC-coupled, wide-dynamic-range, medium-precision applications where speed and rail flexibility are prioritized over ultra-low offset or noise.
Availability
TLE2081CD is available at Aetrix Electronics and suitable for oscilloscope front-end amplifiers, digital multimeter analog signal chains, and flight control unit sensor interfaces requiring stable component supply, long-term manufacturability, and TI-qualified industrial temperature grade performance.
Supply support for TLE2081CD 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-amps and high-reliability industrial components.
The TLE208x family was engineered for high-speed, high-voltage analog signal conditioning in test & measurement, industrial automation, and aerospace systems - emphasizing bandwidth, supply flexibility, and robustness over ultra-low-noise or zero-drift specifications.
FAQ
What is the maximum supply voltage rating for TLE2081CD?
The TLE2081CD has an absolute maximum supply voltage rating of ±19 V (38 V total). Operation beyond this risks permanent damage. For reliable continuous use, TI specifies ±2.25 V to ±19 V recommended operating range - enabling compatibility with legacy ±15 V systems and extended-range ±18 V designs. Always observe derating curves in Section 6.2 for thermal management at elevated ambient temperatures.
Does TLE2081CD support unity-gain stable operation?
Yes, the TLE2081CD is internally compensated for unity-gain stability. Its phase margin exceeds 56° at unity gain with 2 kΩ load and 25 pF capacitive load, as verified in Section 6.5 and 6.7 of the datasheet. This allows direct use in voltage-follower, non-inverting amplifier, and active filter configurations without external compensation components - simplifying design for high-speed buffer and gain stages.
How does TLE2081CD compare to TL081 in terms of pin compatibility?
The TLE2081CD is pin-for-pin compatible with TL081CD and TL081CP in SOIC-8 and PDIP-8 packages. Pin functions match exactly: IN– (2), IN+ (3), VCC– (4), OUT (6), VCC+ (7). No PCB layout changes are needed for migration. However, users must verify that system-level supply rails, decoupling, and output loading align with TLE2081CD's higher slew rate and ±19 V capability to avoid instability or overshoot.
What is the typical input bias current of TLE2081CD at 25°C?
The typical input bias current of TLE2081CD is 15 nA at 25°C, with a maximum of 175 nA across the 0°C to 70°C operating range. This JFET-input characteristic enables high-impedance source interfacing - such as photodiode transimpedance amplifiers or high-value resistor networks - without significant offset voltage errors due to bias current flow. At elevated temperatures, bias current remains well below 1 μA.
Can TLE2081CD drive a 600 Ω load effectively?
Yes, the TLE2081CD delivers ≥80 dB large-signal differential voltage amplification into 600 Ω loads at 25°C, as specified in Section 6.4. Its ±65 mA short-circuit output current and ±20 mA continuous drive capability allow direct interfacing to 600 Ω video lines, legacy test equipment inputs, or RF detector circuits without external buffers - provided proper thermal management and supply decoupling are implemented per TI's layout guidelines.
TLE2081CD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- Excalibur™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- J-FET
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 45V/µs
- Gain Bandwidth Product:
- 10 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 20 pA
- Voltage - Input Offset:
- 490 µV
- Current - Supply:
- 1.7mA
- Current - Output / Channel:
- 48 mA
- Voltage - Supply Span (Min):
- 4.5 V
- Voltage - Supply Span (Max):
- 38 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TLE2081CD FAQ
1.How can I place an order for TLE2081CD through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE2081CD 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 TLE2081CD reliable?
The price and inventory of TLE2081CD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE2081CD is usually 5 days.
3.What payment methods are accepted for TLE2081CD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE2081CD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE2081CD?
TLE2081CD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE2081CD 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 TLE2081CD?
For technical support, including TLE2081CD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE2081CD requirements.
6.How does Aetrix verify that TLE2081CD is sourced from the original manufacturer or authorized distributors?
All TLE2081CD 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 TLE2081CD meets industry standards.
7.What is the process for return or replacement of TLE2081CD?
All TLE2081CD units undergo pre-shipment inspection (PSI). If there is an issue with TLE2081CD, 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 TLE2081CD part is unused and in its original packaging.
Return procedure for TLE2081CD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLE2081CD Tags
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