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Texas Instruments TLE2021CDR
- Part No.:
- TLE2021CDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLE2021CDR.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,146
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Product details
Overview
TLE2021CDR 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 –55°C to +125°C and supports both ±15 V and 5 V single-supply configurations, making it suitable for military-grade sensor signal conditioning in low-power, rail-to-rail-input analog front-ends.
For engineers reviewing the TLE2021CDR datasheet, TLE2021CDR pinout, TLE2021CDR application, or TLE2021CDR equivalent, key selection criteria include its phase-reversal protection, 19 nV/√Hz input noise, 300 µA max supply current, stable dc performance over temperature and time, and compatibility with high-density ceramic DIP packaging.
Technical Context
The TLE2021CDR employs a complementary bipolar Excalibur process with isolated vertical PNP transistors, enabling significantly improved unity-gain bandwidth and slew rate versus legacy OP21-class amplifiers. Its bias circuit ensures exceptional parameter stability-supply current drift is limited to 10 µA over the full military temperature range.
Designed for precision dc-coupled applications, it features a common-mode input voltage range extending to the negative rail (–15 V at ±15 V supply), enabling true single-supply operation down to 5 V. Phase-reversal protection prevents output inversion when inputs fall below the negative supply, critical for fault-tolerant instrumentation interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Unity-gain bandwidth | 2 MHz - enables stable closed-loop operation up to audio frequencies with minimal phase lag. |
| Slew rate | 0.65 V/µs - supports 100 kHz full-power sine wave output at 2 Vpp without distortion. |
| Input offset voltage | 100 µV max - ensures ≤0.002% gain error in 5 V full-scale precision measurement circuits. |
| Supply current | 300 µA max - allows battery-powered operation for >1 year on a CR2032 cell in low-duty-cycle sensing nodes. |
| Input noise voltage | 19 nV/√Hz - preserves SNR in sub-mV sensor outputs (e.g., thermocouples, strain gauges). |
| Operating temperature | –55°C to +125°C - qualified for aerospace, downhole, and engine-control environments. |
| CMRR | 115 dB max - rejects >3 million:1 common-mode interference in noisy industrial settings. |
Pinout & Package
The TLE2021CDR is packaged in an 8-pin Ceramic Dual-In-Line Package (CDIP, JG), hermetically sealed for high-reliability military and space applications. This package provides superior thermal stability and moisture resistance compared to plastic variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Offset Null (N1) | Connects to external potentiometer for manual input offset trimming; required for <10 µV system-level offset. |
| 2 | Inverting Input (IN–) | Differential input node; accepts signals down to –15 V (rail-to-rail common-mode range). |
| 3 | Non-inverting Input (IN+) | Differential input node; enables true single-supply operation with ground-referenced sensors. |
| 4 | VCC / GND | Ground reference for single-supply operation (5 V) or negative supply (–15 V) in split-rail mode. |
| 5 | Offset Null (N2) | Second terminal of offset null network; used with Pin 1 to balance input stage quiescent currents. |
| 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 terminal: accepts +5 V (single) or +15 V (split); internally decoupled. |
| 8 | No Connect (NC) | Internally unused; must remain unconnected per TI design guidelines to avoid parasitic coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Phase-reversal protection | Prevents catastrophic output inversion when IN– or IN+ drops below VCC/GND, eliminating latch-up risk in transient-overvoltage conditions. |
| Low long-term drift | 0.005 µV/month - guarantees <0.6 µV total offset shift over 10 years, enabling maintenance-free calibration in field-deployed systems. |
| Rail-to-rail input capability | Common-mode range includes negative rail (–15 V), allowing direct interface with grounded sensors without level-shifting circuitry. |
| Stable parameters over temperature | Supply current change ≤10 µA across –55°C to +125°C - eliminates need for dynamic bias compensation in wide-temperature designs. |
| High open-loop gain | 6.5 V/µV (136 dB) - ensures <0.001% gain error in unity-gain buffer and precision gain stages. |
Applications
| Strain Gauge Signal Conditioning | Thermocouple Amplification |
|---|---|
Use Scenario: Amplifying microvolt-level Wheatstone bridge outputs from metal strain gauges in structural health monitoring systems. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end with offset trimming and rail-to-rail input to capture full bridge swing. Use Value: 100 µV max offset and 19 nV/√Hz noise preserve resolution of <1 µε mechanical strain measurements. | Use Scenario: Cold-junction-compensated amplification of Type-K thermocouple outputs (–5 mV to +60 mV) in furnace controllers. IC Role / Device Role / Timing Role: Low-drift, low-noise preamplifier with phase-reversal protection during rapid thermal transients. Use Value: 0.005 µV/month drift ensures <0.1°C calibration drift over 5 years, reducing recalibration frequency. |
| Avionics Sensor Interface | Military Data Acquisition Front-End |
Use Scenario: Signal conditioning for pressure transducers in aircraft environmental control systems operating at –55°C to +85°C. IC Role / Device Role / Timing Role: High-reliability op-amp in hermetic CDIP package, supporting MIL-STD-883 Class B screening. Use Value: 115 dB CMRR rejects EMI from avionics bus switching noise; 2 MHz bandwidth captures fast pressure transients. | Use Scenario: Analog front-end for portable battlefield data loggers requiring extended shelf life and extreme temperature tolerance. IC Role / Device Role / Timing Role: Single-supply (5 V) precision amplifier enabling compact, low-power, unattended sensor node deployment. Use Value: 300 µA supply current extends battery life to >2 years; –55°C to +125°C rating ensures operability in desert/winter combat zones. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA277UA | Lower input offset (25 µV max), higher cost, SO-8 package only, no military temp grade. | Commercial industrial instrumentation; not qualified for –55°C operation or hermetic packaging. | Select when ultra-low offset dominates over temperature range and packaging requirements. |
| LMC6061IM | CMOS input (0.01 pA bias), 1.4 MHz bandwidth, 0.35 V/µs slew, 125°C max operating temp. | Ultra-low-power sensor nodes with high-impedance sources; lacks phase-reversal protection and military screening. | Select for femtoampere-level source impedance interfaces where speed and ruggedness are secondary. |
Compared with OPA277UA and LMC6061IM, the TLE2021CDR uniquely combines military-temperature qualification, hermetic CDIP packaging, phase-reversal protection, and Excalibur-process speed/stability-making it irreplaceable in high-reliability analog signal chains where environmental robustness is non-negotiable.
Availability
TLE2021CDR is available at Aetrix Electronics and suitable for avionics sensor interfaces, military data acquisition front-ends, and strain gauge signal conditioning requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for TLE2021CDR 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 high-reliability military and aerospace components.
The TLE202xM family was engineered specifically for precision analog signal conditioning in harsh environments, emphasizing long-term stability, rail-to-rail input operation, and immunity to input overvoltage-induced phase reversal.
FAQ
What is the maximum operating temperature range for the TLE2021CDR?
The TLE2021CDR is characterized for operation from –55°C to +125°C, meeting MIL-PRF-38535 Class B requirements. This full military temperature range is confirmed in Section 5.3 of the official TI datasheet (SLOS191E), and applies specifically to all M-suffix devices including TLE2021CDR.
Does the TLE2021CDR support single-supply operation?
Yes, the TLE2021CDR is explicitly specified for 5 V single-supply operation per Section 2 and Table 5.3 of the datasheet. Its common-mode input voltage range extends to the negative rail (0 V in single-supply mode), and output swings within 0.95 V of both rails under load-enabling direct interfacing with ground-referenced sensors.
What is the purpose of Pins 1 and 5 on the TLE2021CDR?
Pins 1 and 5 are offset null terminals (N1 and N2) used to connect an external 10-kΩ potentiometer for manual adjustment of input offset voltage. This feature allows system-level trimming to <10 µV, critical for high-accuracy DC measurement applications where initial device offset must be actively canceled.
How does phase-reversal protection work in the TLE2021CDR?
The TLE2021CDR integrates 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 protection eliminates unexpected output glitches during power-up, sensor disconnection, or ESD events, ensuring deterministic behavior in safety-critical analog paths.
Is the TLE2021CDR pin-compatible with other TLE202xM variants?
No-TLE2021CDR (single-channel, 8-pin CDIP) is not pin-compatible with TLE2022xM (dual, same package) or TLE2024xM (quad, 14-pin CDIP). While all share the same Excalibur process and core specifications, channel count and pinout differ fundamentally; PCB layout must be designed specifically for the TLE2021CDR's 8-pin JG footprint.
TLE2021CDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- Excalibur™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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
TLE2021CDR FAQ
1.How can I place an order for TLE2021CDR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE2021CDR 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 TLE2021CDR reliable?
The price and inventory of TLE2021CDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE2021CDR is usually 5 days.
3.What payment methods are accepted for TLE2021CDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE2021CDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE2021CDR?
TLE2021CDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE2021CDR 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 TLE2021CDR?
For technical support, including TLE2021CDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE2021CDR requirements.
6.How does Aetrix verify that TLE2021CDR is sourced from the original manufacturer or authorized distributors?
All TLE2021CDR 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 TLE2021CDR meets industry standards.
7.What is the process for return or replacement of TLE2021CDR?
All TLE2021CDR units undergo pre-shipment inspection (PSI). If there is an issue with TLE2021CDR, 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 TLE2021CDR part is unused and in its original packaging.
Return procedure for TLE2021CDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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