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Texas Instruments TLE2021CD
- Part No.:
- TLE2021CD
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLE2021CD.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:162
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Product details
Overview
TLE2021CD 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 (commercial 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 industrial sensor interfaces and precision analog front-ends.
For engineers reviewing the TLE2021CD datasheet, TLE2021CD pinout, TLE2021CD application, or TLE2021CD equivalent, key selection criteria include its low 300 µA max supply current, 19 nV/√Hz input voltage noise, stable dc performance over temperature, and compatibility with both single-5V and split-±15V supplies in space-constrained analog circuits.
Technical Context
The TLE2021CD employs a complementary bipolar Excalibur process with isolated vertical PNP transistors, enabling significantly improved unity-gain bandwidth and slew rate versus legacy precision op-amps like the OP21. Its bias circuit architecture ensures exceptional stability of offset voltage, gain, and CMRR across time and temperature.
This device integrates phase-reversal protection to prevent output polarity inversion when inputs fall below the negative supply rail-a critical feature for single-supply operation with ground-referenced sensors. Its common-mode input range includes the negative rail, supporting true single-supply configurations without level-shifting circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 300 µA max - enables battery-powered or low-power analog signal chains with minimal quiescent load. |
| Unity-Gain Bandwidth | 2 MHz - supports stable closed-loop operation up to ~1.2 MHz in unity-gain follower configuration. |
| Slew Rate | 0.65 V/µs - allows clean amplification of signals up to ~200 kHz full-power sine wave at 10 Vpp. |
| Input Offset Voltage | 100 µV max - reduces dc error in precision gain stages and instrumentation amplifier front-ends. |
| Input Voltage Noise | 19 nV/√Hz - preserves SNR in low-amplitude sensor signal conditioning (e.g., thermocouples, strain gauges). |
| Common-Mode Input Range | Includes negative rail (–15 V to +13.2 V at ±15 V) - enables direct interface with ground-referenced transducers in single-supply systems. |
| Phase-Reversal Protection | Yes - prevents catastrophic output inversion during input overdrive below V–, improving system robustness. |
Pinout & Package
Package: 8-pin CDIP (JG), hermetically sealed ceramic dual in-line package rated for commercial temperature range (–40°C to +85°C). Pin count and layout match industry-standard 8-pin op-amp footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Offset Null (N1) | Connects to external potentiometer for manual input offset trimming; unused in most applications. |
| 2 | Inverting Input (IN–) | Primary feedback node in inverting configurations; high-impedance input with 50 nA max bias current. |
| 3 | Non-Inverting Input (IN+) | Reference input in non-inverting configurations; shares same dc specs and noise as IN–. |
| 4 | VCC / GND | Ground terminal for single-supply operation (5 V); connects to negative rail in split-supply (±15 V) mode. |
| 5 | Offset Null (N2) | Second terminal of offset null network; used with Pin 1 for calibration. |
| 6 | Output (OUT) | Capable of ±20 mA drive into 10 kΩ load; swings to within 0.95 V of rails at full load. |
| 7 | VCC+ | Positive supply pin: accepts +5 V (single) or +15 V (split); internal ESD protection rated to ±20 V absolute max. |
| 8 | No Connect (NC) | Internally unused; must be left floating-no routing or grounding required. |
Key Features
| Feature | Design Value |
|---|---|
| Excalibur Process Technology | Enables simultaneous high speed (2 MHz GBW) and precision (100 µV VIO) unattainable with standard bipolar processes. |
| Rail-Inclusive Common-Mode Range | Allows direct connection of ground-referenced sensors without level-shifting circuitry, reducing component count and error sources. |
| Phase-Reversal Protection | Eliminates risk of latch-up or erroneous control signals when sensor outputs dip below ground-critical for automotive and industrial I/O. |
| Low Long-Term Drift | 0.005 µV/month offset drift ensures calibration stability over years in measurement equipment and medical devices. |
| Military-Grade Variant Path | Same die as TLE2021M (–55°C to +125°C), enabling seamless qualification path for harsh-environment designs. |
Applications
| Industrial Sensor Signal Conditioning | Medical Instrumentation Front-End |
|---|---|
Use Scenario: Amplifying low-level mV-range outputs from RTDs, thermocouples, and bridge-based pressure sensors in PLC analog input modules. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with rail-to-rail input capability and low 19 nV/√Hz noise. Use Value: Maintains sub-0.1% linearity error over temperature and time due to 100 µV VIO max and 0.005 µV/mo drift. |
Use Scenario: Biopotential acquisition in ECG/EEG systems where input signals are <1 mV and referenced to patient ground. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier input buffer with phase-reversal protection against electrode pop transients. Use Value: Prevents output polarity flip during electrode contact loss, avoiding false arrhythmia detection in clinical-grade devices. |
| Single-Supply Data Acquisition | High-Stability Reference Buffer |
Use Scenario: Driving SAR ADC inputs in portable test equipment powered from 5 V USB or Li-ion battery. IC Role / Device Role / Timing Role: Rail-to-rail output buffer with 0.95 V headroom ensuring full-scale ADC utilization. Use Value: 300 µA supply current extends battery life while maintaining 2 MHz bandwidth for fast channel switching. |
Use Scenario: Buffering precision voltage references (e.g., REF5025) in calibration standards and metrology gear. IC Role / Device Role / Timing Role: Low-drift, low-noise unity-gain follower isolating reference from load variations. Use Value: 100 µV VIO and 2 µV/°C tempco preserve reference accuracy better than discrete FET-buffer alternatives. |
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 | Higher precision (10 µV VIO), lower noise (3.5 nV/√Hz), but 2.5 mA ICC - 8× higher supply current than TLE2021CD. | Better for ultra-low-noise lab instruments; unsuitable for power-constrained portable designs. | Select OPA227PA only when offset and noise dominate over power budget; verify thermal derating in enclosed enclosures. |
| LM324DR | Lower cost, wider temp range (–40°C to +125°C), but 3 mV VIO max, 1.2 MHz GBW, no phase-reversal protection. | Acceptable for non-critical industrial controls; fails safety-critical sensor monitoring where rail violation may occur. | Choose LM324DR for cost-sensitive, non-precision applications; avoid where input overdrive below V– is possible. |
Compared with OPA227PA and LM324DR, the TLE2021CD uniquely balances low power (300 µA), rail-inclusive input, and phase-reversal protection-making it optimal for battery-operated sensor nodes and single-supply industrial I/O where reliability and efficiency coexist.
Availability
TLE2021CD is available at Aetrix Electronics and suitable for industrial sensor interfaces, portable medical diagnostics, and single-supply data acquisition systems requiring stable component supply with long-term availability assurance.
Supply support for TLE2021CD 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 analog signal conditioning in military, aerospace, and industrial environments-prioritizing dc accuracy, thermal stability, and robustness over wide temperature ranges.
FAQ
What is the operating temperature range for the TLE2021CD?
The TLE2021CD is specified for commercial temperature operation from –40°C to +85°C. This range is validated per TI's SLOS191E datasheet Section 5.3, and differs from the military-grade TLE2021M (–55°C to +125°C). Designers must confirm ambient and junction temperature limits under load to ensure reliable operation within this envelope.
Does the TLE2021CD support single-supply operation?
Yes, the TLE2021CD supports true single-supply operation at +5 V, with a common-mode input voltage range extending to the negative rail (0 V) and output swing within 0.95 V of both rails. This capability is confirmed in Sections 5.4 and 5.6 of the datasheet, enabling direct interfacing with ground-referenced sensors without level-shifting circuitry.
What is the maximum output current capability of the TLE2021CD?
The TLE2021CD delivers ±20 mA output current per the Absolute Maximum Ratings table (Section 5.1). Under recommended conditions (RL = 10 kΩ), it maintains linear operation with VOH ≥ 3.8 V and VOL ≤ 0.95 V at 25°C. Sustained high-current loads require thermal analysis per the dissipation ratings in Section 5.2.
How does phase-reversal protection work in the TLE2021CD?
The TLE2021CD incorporates internal circuitry that prevents output polarity inversion when either input falls below the negative supply rail-a failure mode common in standard op-amps. As documented in Section 2, this eliminates unexpected state changes in sensor monitoring or control loops during transient overdrive events.
Is the TLE2021CD pin-compatible with other 8-pin DIP op-amps?
Yes, the TLE2021CD uses the industry-standard 8-pin CDIP (JG) package with pinout matching generic single-op-amp configurations: Pin 2 (IN–), Pin 3 (IN+), Pin 6 (OUT), Pin 7 (V+), Pin 4 (V–/GND). However, Pins 1 and 5 are dedicated to offset nulling-unused pins on many legacy op-amps-so PCB layout must accommodate this difference.
TLE2021CD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- Excalibur™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- 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:
- 150 µV
- Current - Supply:
- 240µA
- Current - Output / Channel:
- 20 mA
- Voltage - Supply Span (Min):
- 4 V
- Voltage - Supply Span (Max):
- 40 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TLE2021CD FAQ
1.How can I place an order for TLE2021CD through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE2021CD 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 TLE2021CD reliable?
The price and inventory of TLE2021CD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE2021CD is usually 5 days.
3.What payment methods are accepted for TLE2021CD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE2021CD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE2021CD?
TLE2021CD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE2021CD 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 TLE2021CD?
For technical support, including TLE2021CD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE2021CD requirements.
6.How does Aetrix verify that TLE2021CD is sourced from the original manufacturer or authorized distributors?
All TLE2021CD 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 TLE2021CD meets industry standards.
7.What is the process for return or replacement of TLE2021CD?
All TLE2021CD units undergo pre-shipment inspection (PSI). If there is an issue with TLE2021CD, 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 TLE2021CD part is unused and in its original packaging.
Return procedure for TLE2021CD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLE2021CD 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
Texas Instruments
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LM2904DGKR
Texas Instruments
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LM324DR
Texas Instruments
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MCP6006T-E/OT
Microchip Technology
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MCP6006UT-E/OT
Microchip Technology
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LM324PWR
Texas Instruments
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LM2902PWR
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LM2902DR
Texas Instruments
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LM358P
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