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Texas Instruments TLE2021ID
- Part No.:
- TLE2021ID
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLE2021ID.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:104
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Product details
Overview
TLE2021ID from Texas Instruments is a single-channel, precision operational amplifier using the Excalibur bipolar process, delivering 2 MHz unity-gain bandwidth, 0.65 V/µs slew rate, and 100 µV max input offset voltage at ±15 V supply. It operates across –40°C to +85°C (industrial grade), supports rail-to-rail common-mode input down to the negative rail, and features phase-reversal protection-making it suitable for low-level signal conditioning in data acquisition systems, sensor front-ends, and precision instrumentation.
For engineers reviewing the TLE2021ID datasheet, TLE2021ID pinout, TLE2021ID application, or TLE2021ID equivalent, key selection considerations include its military-grade M-suffix variants' extended temperature range (–55°C to +125°C), low 300 µA max supply current, 19 nV/√Hz input voltage noise, and compatibility with both single 5 V and dual ±15 V supplies in space-constrained industrial control and test equipment designs.
Technical Context
The TLE2021ID employs Texas Instruments' Excalibur complementary bipolar process with isolated vertical PNP transistors, enabling improved unity-gain bandwidth and slew rate over legacy OP21-class amplifiers. Its bias circuit ensures stable dc parameters over time and temperature-critical for long-life embedded measurement systems.
Phase-reversal protection prevents output inversion when either input falls below the negative supply rail, and the common-mode input range includes the negative rail under all operating conditions, supporting true single-supply operation with ground-referenced sensors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | ±2 V to ±20 V (supports wide-range split supplies or 5 V single supply) |
| Unity-Gain Bandwidth | 2 MHz (enables stable closed-loop gain ≥1 up to audio and low-speed communication frequencies) |
| Slew Rate | 0.65 V/µs (supports ≤100 kHz full-power sine wave output at 10 Vpp without distortion) |
| Input Offset Voltage | 100 µV max (ensures ≤0.1% error in 100 mV full-scale 12-bit ADC interfaces) |
| Supply Current | 300 µA max (enables ultra-low-power operation in battery-backed monitoring nodes) |
| Input Voltage Noise | 19 nV/√Hz at 1 kHz (preserves SNR in µV-level thermocouple or strain gauge amplification) |
| Common-Mode Range | Includes negative rail (allows direct interfacing with 0 V–referenced sensors without level-shifting) |
Pinout & Package
The TLE2021ID is housed in an 8-pin SOIC (D) package, pin-compatible with industry-standard op-amp footprints and optimized for surface-mount industrial PCBs.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Offset Null (N1) | Connects to external potentiometer for fine-tuning input offset voltage in high-accuracy DC applications |
| 2 | Inverting Input (–) | Primary feedback node; accepts signals referenced to system ground or negative rail |
| 3 | Non-Inverting Input (+) | High-impedance input for sensor or reference signal; supports rail-to-rail common-mode range |
| 4 | V– / GND | Negative supply or ground return; must be low-impedance for noise immunity |
| 5 | Offset Null (N2) | Second terminal of offset null network; used with Pin 1 for trimming |
| 6 | Output | Capacitive-load tolerant output capable of ±20 mA drive into 10 kΩ load |
| 7 | V+ | Positive supply input; decoupling capacitor required within 1 cm for stability |
| 8 | No Connect | Internally unused; must remain unconnected per TI design guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Phase-reversal protection | Prevents catastrophic output inversion when inputs go below V–, eliminating need for external clamping diodes |
| Excalibur bipolar process | Delivers 2× higher slew rate and bandwidth than standard bipolar op-amps while maintaining low input bias current (≤50 nA) |
| Rail-included common-mode range | Enables direct connection of grounded sensors (e.g., RTDs, bridge transducers) without level-shifting circuitry |
| Low long-term drift | 0.005 µV/month offset drift ensures calibration stability over multi-year deployments in field instruments |
| Military-temperature qualified variants | TLE2021M (–55°C to +125°C) shares identical electrical specs and pinout-enabling drop-in qualification upgrades |
Applications
| Strain Gauge Signal Conditioning | Thermocouple Amplifier Front-End |
|---|---|
Use Scenario: Amplifying low-level mV outputs from Wheatstone bridge strain gauges in structural health monitoring systems. IC Role / Device Role / Timing Role: Precision difference amplifier with offset nulling capability and rail-to-rail input for zero-biased bridges. Use Value: 100 µV max offset and 19 nV/√Hz noise preserve microstrain resolution; phase-reversal protection avoids false fault triggers during transient overloads. | Use Scenario: Cold-junction compensation and amplification of Type-K thermocouple outputs (≈41 µV/°C) in furnace controllers. IC Role / Device Role / Timing Role: Low-drift, low-noise instrumentation amplifier stage with programmable gain and offset trim. Use Value: 0.005 µV/month drift ensures <±0.1°C accuracy over 5 years; common-mode range including ground simplifies cold-junction sensor interface. |
| Portable Data Logger Analog Front-End | Industrial 4–20 mA Transmitter |
Use Scenario: Battery-powered environmental sensor node digitizing pH, conductivity, and dissolved oxygen signals. IC Role / Device Role / Timing Role: Ultra-low-power signal conditioner driving SAR ADC inputs with minimal quiescent current overhead. Use Value: 300 µA max supply current extends 10-year battery life; rail-included input allows direct connection to grounded electrochemical sensors. | Use Scenario: Two-wire loop-powered transmitter converting 0–10 V sensor outputs to 4–20 mA current output. IC Role / Device Role / Timing Role: Precision voltage-to-current converter with high open-loop gain (6.5 V/µV) for accurate loop regulation. Use Value: 136 dB open-loop gain ensures <0.01% linearity error; ±15 V operation supports wide dynamic range in noisy plant environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA227PA | Lower 10 nV/√Hz noise, higher 8 MHz GBW, but 2.5 mA supply current and no phase-reversal protection | Better for high-bandwidth, low-noise AC-coupled applications; unsuitable for rail-to-rail input or low-power DC systems | Select OPA227PA only when bandwidth >2 MHz and noise <15 nV/√Hz are mandatory-and power budget allows ≥2 mA per channel |
| TLE2021CD | Same Excalibur process, identical pinout and specs, but rated for 0°C to +70°C commercial temperature range | Valid for cost-sensitive consumer or lab equipment where extended temperature is not required | TLE2021CD offers identical performance at lower cost for non-industrial environments; no PCB changes needed |
Compared with OPA227PA and TLE2021CD, the TLE2021ID uniquely balances ultra-low power (300 µA), rail-included input, and phase-reversal protection-making it irreplaceable in battery-operated, ground-referenced, safety-critical analog front-ends where reliability across temperature extremes matters.
Availability
TLE2021ID is available at Aetrix Electronics and suitable for industrial automation, test and measurement equipment, and precision sensor interfaces requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for TLE2021ID 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 excellence.
The TLE202x family was engineered for high-reliability, low-power precision signal conditioning in military, aerospace, and industrial systems-leveraging the Excalibur process to deliver speed, accuracy, and stability where legacy op-amps fall short.
FAQ
What is the maximum operating temperature range for the TLE2021ID?
The TLE2021ID is specified for industrial operation from –40°C to +85°C. While the military-grade TLE2021M variant extends to –55°C to +125°C with identical electrical specs, the TLE2021ID's thermal limits are strictly bounded by its industrial qualification-verified per TI's SLOS191E datasheet Section 5.3 Recommended Operating Conditions.
Does the TLE2021ID support single-supply operation?
Yes, the TLE2021ID supports true single-supply operation at 5 V. Its common-mode input voltage range includes the negative rail (GND), and output swings to within 0.7 V of each rail-enabling direct interfacing with ground-referenced sensors and microcontroller ADCs without level-shifting circuitry, as confirmed in Sections 5.4 and 5.6 of the datasheet.
What is the purpose of Pins 1 and 5 on the TLE2021ID?
Pins 1 and 5 are offset null terminals. They connect to the ends of an external 10-kΩ potentiometer (wiper to V–) to actively trim input offset voltage-critical for achieving sub-50 µV residual offset in high-accuracy DC applications like precision weigh scales or medical instrumentation, per Figure 4-1 and Section 4 Pin Configuration.
How does phase-reversal protection work in the TLE2021ID?
The TLE2021ID integrates internal circuitry that clamps the differential input stage when either input drops below the negative supply rail-preventing the output from inverting unexpectedly. This eliminates the need for external Schottky diodes in sensor interfaces prone to overvoltage transients, as explicitly described in Section 2 Description and validated in application circuits on page 26.
Is the TLE2021ID pin-compatible with other op-amps in the same package?
Yes, the TLE2021ID uses the industry-standard 8-pin SOIC (D) footprint and shares identical pin assignments with legacy TI op-amps like the TL071 and OP27-enabling drop-in replacement in existing layouts. However, differences in bandwidth, noise, and input structure require verification of loop stability and noise performance in the target application.
TLE2021ID 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:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 0.65V/µs
- Gain Bandwidth Product:
- 2 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 25 nA
- Voltage - Input Offset:
- 120 µV
- Current - Supply:
- 240µA
- Current - Output / Channel:
- 20 mA
- Voltage - Supply Span (Min):
- 4 V
- Voltage - Supply Span (Max):
- 40 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TLE2021ID FAQ
1.How can I place an order for TLE2021ID through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE2021ID 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 TLE2021ID reliable?
The price and inventory of TLE2021ID are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE2021ID is usually 5 days.
3.What payment methods are accepted for TLE2021ID?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE2021ID transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE2021ID?
TLE2021ID orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE2021ID 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 TLE2021ID?
For technical support, including TLE2021ID datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE2021ID requirements.
6.How does Aetrix verify that TLE2021ID is sourced from the original manufacturer or authorized distributors?
All TLE2021ID 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 TLE2021ID meets industry standards.
7.What is the process for return or replacement of TLE2021ID?
All TLE2021ID units undergo pre-shipment inspection (PSI). If there is an issue with TLE2021ID, 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 TLE2021ID part is unused and in its original packaging.
Return procedure for TLE2021ID:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLE2021ID Tags
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LM358DT
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LM358DR
Texas Instruments
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LM2904DR
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LM358ADR
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MCP6006UT-E/OT
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LM2902PWR
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LM2902DR
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LM358P
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