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Texas Instruments TLE2021ACDR
- Part No.:
- TLE2021ACDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLE2021ACDR.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,794
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Product details
Overview
TLE2021ACDR 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 and low-level analog front-ends.
For engineers reviewing the TLE2021ACDR datasheet, TLE2021ACDR pinout, TLE2021ACDR application, or TLE2021ACDR equivalent, key selection criteria include its phase-reversal protection, rail-to-rail common-mode input range (including negative rail), ultra-low 300 µA max supply current, and stable dc performance over temperature and time - critical for high-reliability instrumentation and aerospace systems.
Technical Context
The TLE2021ACDR employs Texas Instruments' 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 across temperature and decades of operation.
It features phase-reversal protection that prevents output inversion when inputs fall below the negative supply rail, and its common-mode input voltage range includes the negative rail - a key enabler for single-supply low-side sensing and precision difference amplifier topologies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 300 µA max - enables battery-powered or low-power system designs without sacrificing precision |
| Unity-Gain Bandwidth | 2 MHz - supports stable closed-loop operation up to audio and low-speed data acquisition frequencies |
| Slew Rate | 0.65 V/µs - ensures faithful reproduction of fast-rising signals in sensor interfaces and active filters |
| Input Offset Voltage | 100 µV max at 25°C - minimizes dc error in precision gain stages and bridge amplifier circuits |
| Input Bias Current | 50 nA max - reduces voltage error in high-impedance source applications (e.g., photodiode transimpedance) |
| Common-Mode Input Range | Includes negative rail (–15 V to +13.2 V at ±15 V) - allows direct interfacing with ground-referenced sensors in single-supply systems |
| Operating Temperature | –55°C to +125°C - qualified for full military temperature range, supporting harsh-environment deployment |
Pinout & Package
Package: SOIC-8 (D package), 8-pin surface-mount plastic small-outline integrated circuit per JEDEC MS-012.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Offset Null (N1) | Connects to external potentiometer for fine-tuning input offset voltage in ultra-precision applications |
| 2 | Inverting Input (IN–) | Differential input node; accepts signal referenced to system ground or virtual ground |
| 3 | Non-Inverting Input (IN+) | Differential input node; used for reference or high-impedance signal routing |
| 4 | VCC– / GND | Negative supply pin (or ground in single-supply mode); must be decoupled locally |
| 5 | Offset Null (N2) | Second terminal of offset null potentiometer; completes trimming network with Pin 1 |
| 6 | Output (OUT) | Amplified differential output; capable of ±20 mA drive into resistive loads |
| 7 | VCC+ | Positive supply pin; supports ±2 V to ±20 V operation or 5 V single supply |
| 8 | No Connect (NC) | Internally unused; must remain unconnected per TI design guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Phase-reversal protection | Prevents catastrophic output inversion when IN– or IN+ drops below VCC–, eliminating latch-up risk in fault conditions |
| Low long-term drift | 0.005 µV/month - ensures calibration stability over years in deployed instrumentation and test equipment |
| Rail-included common-mode range | Accepts inputs down to VCC– - enables direct connection to grounded thermocouples, strain gauges, and shunt monitors |
| High open-loop gain | 6.5 V/µV (136 dB) - delivers <0.001% gain error in unity-gain buffer and high-accuracy closed-loop configurations |
| Low noise voltage | 19 nV/√Hz at 1 kHz - preserves SNR in low-amplitude signal chains such as medical ECG preamps and seismic sensors |
Applications
| Strain Gauge Signal Conditioning | Thermocouple Amplification |
|---|---|
Use Scenario: Amplifying microvolt-level Wheatstone bridge outputs from metal foil or semiconductor strain gauges in structural health monitoring. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end stage with offset trimming and rail-to-rail input capability. Use Value: 100 µV max VIO and 0.005 µV/mo drift ensure measurement repeatability over multi-year deployments without recalibration. |
Use Scenario: Cold-junction compensation and linearization of Type K/J thermocouple outputs in industrial furnace controllers. IC Role / Device Role / Timing Role: Low-drift, low-noise non-inverting amplifier with negative-rail input support for direct thermocouple interface. Use Value: Phase-reversal protection prevents erroneous output during thermal transients where thermocouple leads may dip below ground. |
| Military Data Acquisition Front-End | Low-Power Battery Instrumentation |
Use Scenario: Analog signal conditioning in airborne telemetry units requiring operation from –55°C to +125°C under vibration and radiation exposure. IC Role / Device Role / Timing Role: Single-supply or dual-supply precision op-amp in anti-aliasing filter and programmable gain stage. Use Value: Full military temperature qualification and 300 µA max ICC enable reliable operation in SWaP-constrained avionics without forced cooling. |
Use Scenario: Portable environmental sensor nodes measuring pH, dissolved oxygen, or gas concentration with multi-year battery life. IC Role / Device Role / Timing Role: Ultra-low-power signal amplifier driving ADC inputs while maintaining sub-100 µV dc accuracy. Use Value: 300 µA supply current and rail-included input range allow direct 3.3 V or 5 V battery operation with no level-shifting circuitry. |
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, 0.1 µV/°C drift) but higher supply current (2.5 mA) and narrower temp range (–40°C to +85°C) | Better for lab-grade bench instruments; unsuitable for extended-temperature or ultra-low-power use | Select OPA227PA only if dc accuracy outweighs power and temperature requirements |
| LM324M | Wider operating temp (–55°C to +125°C), but lower performance: 3 mV VIO, 1.2 MHz GBW, no phase-reversal protection | Acceptable for cost-sensitive industrial controls where moderate accuracy suffices | Choose LM324M only when budget constraints dominate and 10× VIO error is tolerable |
Compared with OPA227PA and LM324M, the TLE2021ACDR uniquely balances military-temperature operation, sub-100 µV offset, phase-reversal immunity, and sub-300 µA supply current - making it irreplaceable in high-reliability, low-power, extended-temperature analog signal chains.
Availability
TLE2021ACDR is available at Aetrix Electronics and suitable for strain gauge interfaces, thermocouple amplification, and military data acquisition systems requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for TLE2021ACDR 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 90 years of innovation in high-reliability components.
The TLE202xM family was engineered for precision analog signal conditioning in defense, aerospace, and industrial systems demanding guaranteed performance across –55°C to +125°C with minimal long-term drift.
FAQ
What is the maximum supply voltage rating for the TLE2021ACDR?
The TLE2021ACDR has absolute maximum supply voltage ratings of +20 V on VCC+ and –20 V on VCC–, allowing safe operation at ±15 V nominal supplies with margin for transient spikes. Operation beyond these limits risks permanent damage, and recommended operating range is ±2 V to ±20 V per datasheet Section 5.3.
Does the TLE2021ACDR support true single-supply operation with input signals down to ground?
Yes - the TLE2021ACDR's common-mode input voltage range includes the negative rail (VCC–), meaning it accepts inputs from VCC– up to ~13.2 V below VCC+ at ±15 V supply. In 5 V single-supply mode (VCC– = GND), inputs can go to 0 V, enabling direct interface with ground-referenced sensors like RTDs and shunt resistors.
How does phase-reversal protection work in the TLE2021ACDR?
The TLE2021ACDR integrates internal circuitry that clamps the input differential pair when either input falls below VCC–, preventing the output from inverting unexpectedly. This eliminates false triggering in fault conditions - such as sensor disconnection or cold-junction transients - where conventional op-amps would produce erroneous high/low states.
Can the TLE2021ACDR be used in unity-gain stable configurations?
Yes - the TLE2021ACDR is unity-gain stable with a phase margin of 46° at ±15 V supply (Section 5.7). It exhibits no peaking or oscillation in voltage-follower or gain-of-one configurations, and its 2 MHz bandwidth remains usable without external compensation in standard PCB layouts with proper power supply decoupling.
What is the long-term input offset voltage drift specification for the TLE2021ACDR?
The TLE2021ACDR exhibits a typical input offset voltage drift of 0.005 µV per month at 25°C, extrapolated from accelerated life testing. This ultra-low aging rate ensures measurement integrity over years of continuous operation - critical for unattended field instruments and calibration standards where periodic recalibration is impractical.
TLE2021ACDR 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:
- 1.7 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 25 nA
- Voltage - Input Offset:
- 80 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
TLE2021ACDR FAQ
1.How can I place an order for TLE2021ACDR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE2021ACDR 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 TLE2021ACDR reliable?
The price and inventory of TLE2021ACDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE2021ACDR is usually 5 days.
3.What payment methods are accepted for TLE2021ACDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE2021ACDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE2021ACDR?
TLE2021ACDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE2021ACDR 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 TLE2021ACDR?
For technical support, including TLE2021ACDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE2021ACDR requirements.
6.How does Aetrix verify that TLE2021ACDR is sourced from the original manufacturer or authorized distributors?
All TLE2021ACDR 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 TLE2021ACDR meets industry standards.
7.What is the process for return or replacement of TLE2021ACDR?
All TLE2021ACDR units undergo pre-shipment inspection (PSI). If there is an issue with TLE2021ACDR, 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 TLE2021ACDR part is unused and in its original packaging.
Return procedure for TLE2021ACDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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