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Texas Instruments TLE2021ACPS
- Part No.:
- TLE2021ACPS
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
TLE2021ACPS.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:3,424
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Product details
Overview
TLE2021ACPS from Texas Instruments is a single-channel, high-speed, low-power precision operational amplifier fabricated using the Excalibur complementary bipolar process. It delivers 2 MHz unity-gain bandwidth, 0.45 V/μs slew rate, and 100 μV max input offset voltage at 25°C, operating from ±15 V or 5 V single supply - ideal for low-level signal conditioning in industrial sensor interfaces and portable instrumentation.
For engineers reviewing the TLE2021ACPS datasheet, TLE2021ACPS pinout, TLE2021ACPS application, or TLE2021ACPS equivalent, key selection criteria include its rail-to-rail input capability (includes negative rail), phase-reversal protection, 300 μA max supply current, and guaranteed performance across 0°C to 70°C - critical for battery-powered precision analog front-ends and single-supply data acquisition systems.
Technical Context
The TLE2021ACPS employs an isolated vertical PNP transistor architecture that enables significantly improved AC performance over legacy precision op-amps like the OP21, while maintaining ultra-low input bias current (≤50 nA) and exceptional DC stability. Its internal bias circuit ensures minimal drift in offset voltage (0.005 μV/month) and supply current (≤10 μA change over military temperature range).
It features phase-reversal protection to prevent output inversion when inputs go below the negative rail, and supports dual supply (±15 V) or single-supply (5 V) operation with a common-mode input range extending to the negative rail - enabling direct interfacing with ground-referenced sensors without level-shifting circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 300 μA max - enables multi-year battery life in portable instrumentation and IoT sensor nodes. |
| Unity-Gain Bandwidth | 2 MHz typ - supports stable closed-loop gain ≥1 with ≤1% settling error in <1 μs for medium-speed signal conditioning. |
| Slew Rate | 0.45 V/μs min - handles 1 kHz sine waves up to ±1 V without distortion; sufficient for anti-aliasing and active filtering. |
| Input Offset Voltage | 100 μV max at 25°C - achieves ≤0.2% initial error in 5 V full-scale measurement systems without trimming. |
| Input Bias Current | 50 nA max - allows use with high-impedance sources (e.g., pH electrodes, piezoelectric sensors) without significant voltage drop. |
| Common-Mode Input Range | Includes negative rail (0 V to 3.5 V @ 5 V supply) - eliminates need for input biasing in single-supply transducer interfaces. |
| Phase-Reversal Protection | Integrated circuitry prevents output polarity flip when IN− or IN+ falls below VCC−/GND - improves system robustness in fault conditions. |
Pinout & Package
Package: Plastic DIP-8 (P package), leaded through-hole, 0.3-inch wide body, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OFFSET N1 | Null adjustment terminal for external offset trimming via potentiometer (pins 1 & 5). |
| 2 | IN− | Inverting input - high-impedance node; accepts signals down to negative rail. |
| 3 | IN+ | Non-inverting input - high-impedance node; common-mode range includes GND. |
| 4 | VCC−/GND | Negative supply or ground reference - supports single- or split-supply operation. |
| 5 | OFFSET N2 | Null adjustment terminal paired with Pin 1 for precision offset calibration. |
| 6 | OUT | Amplified output - drives loads ≥10 kΩ; swing within 0.85 V of rails @ 5 V supply. |
| 7 | VCC+ | Positive supply - accepts +5 V (single) or +15 V (split); absolute max = +20 V. |
| 8 | NC | No internal connection - unused pad; must remain unconnected per datasheet. |
Key Features
| Feature | Design Value |
|---|---|
| Excalibur Process Technology | Complementary bipolar with isolated vertical PNP transistors - enables 2× higher bandwidth/slew vs. standard precision op-amps at same power. |
| Rail-to-Rail Input Capability | Common-mode range extends to VCC−/GND - simplifies design of single-supply sensor amplifiers without input bias networks. |
| Phase-Reversal Protection | Prevents output inversion during input overdrive below negative rail - avoids latch-up or false triggering in safety-critical monitoring. |
| Low Long-Term Drift | 0.005 μV/month typical - ensures calibration stability over years in medical or test equipment without periodic recalibration. |
| High Open-Loop Gain | 6.5 V/μV (136 dB) typ - maintains ≤0.001% gain error in unity-gain buffer configurations with 10 kΩ load. |
Applications
| Strain Gauge Signal Conditioning | Portable Digital Multimeter Front-End |
|---|---|
|
Use Scenario: Amplifying mV-level Wheatstone bridge outputs from metal foil strain gauges in structural health monitoring. IC Role / Device Role: Instrumentation amplifier input stage providing gain, offset nulling, and rail-compatible common-mode rejection. Use Value: 100 μV max offset and 0.005 μV/month drift ensure sub-0.1% measurement accuracy over field deployment lifetime without recalibration. |
Use Scenario: Buffering and scaling high-impedance voltage divider outputs in handheld DMMs powered by 9 V batteries. IC Role / Device Role: Precision unity-gain buffer isolating ADC input from source impedance variations. Use Value: 50 nA max input bias current prevents loading errors on 10 MΩ input dividers; 300 μA supply current extends battery life beyond 100 hours. |
| Thermocouple Cold-Junction Compensation | Industrial 4–20 mA Transmitter Interface |
|
Use Scenario: Amplifying low-level thermocouple voltages (e.g., Type K: ~41 μV/°C) while rejecting noise in factory environments. IC Role / Device Role: Low-noise (19 nV/√Hz), low-drift preamplifier with cold-junction sensor integration. Use Value: Phase-reversal protection prevents erroneous readings when thermocouple leads short to chassis ground; rail-to-rail input accommodates negative thermocouple outputs. |
Use Scenario: Converting loop-powered 4–20 mA current signals to precise 0–5 V voltage for microcontroller ADC sampling. IC Role / Device Role: Precision I-to-V converter with programmable gain and offset correction. Use Value: 2 MHz bandwidth supports fast transient detection in process control; 136 dB open-loop gain ensures linearity error <0.01% across full current range. |
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 input offset (25 μV max), higher supply current (2.3 mA), no phase-reversal protection. | Better DC accuracy but unsuitable for inputs near negative rail without external clamping. | Select when ultimate offset and drift specs outweigh rail compatibility and fault tolerance requirements. |
| LM324N | Higher offset (7 mV max), lower bandwidth (1.2 MHz), no rail-to-rail input, 1.2 mA supply current. | Cost-optimized general-purpose use; lacks precision, speed, and single-supply input capability. | Select only for non-critical, low-cost industrial controls where 0.1% accuracy is acceptable. |
Compared with OPA227PA and LM324N, the TLE2021ACPS uniquely balances ultra-low power (300 μA), rail-to-rail input, and phase-reversal protection - making it the only option among the three suitable for battery-powered, ground-referenced sensor interfaces requiring long-term stability and fault resilience.
Availability
TLE2021ACPS is available at Aetrix Electronics and suitable for industrial sensor interfaces, portable test equipment, and 4–20 mA loop-powered systems requiring stable component supply, long-lifecycle support, and consistent parametric performance across production batches.
Supply support for TLE2021ACPS 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 expertise in precision amplifiers and industrial-grade signal chain solutions.
The TLE202x family was engineered specifically for high-accuracy, low-power analog signal conditioning in space-constrained, battery-operated, and single-supply industrial systems - emphasizing long-term stability, rail compatibility, and fault-tolerant operation.
FAQ
What is the maximum operating temperature range for the TLE2021ACPS?
The TLE2021ACPS is characterized for operation from 0°C to 70°C (C-suffix grade). Its absolute maximum junction temperature is 150°C, and storage temperature range extends from −65°C to 150°C. The device maintains all specified electrical characteristics across its full rated temperature range, with supply-current change limited to 10 μA typical over 0°C to 70°C.
Does the TLE2021ACPS support single-supply operation?
Yes, the TLE2021ACPS is explicitly specified for both 5 V single-supply and ±15 V split-supply operation. Its common-mode input voltage range includes the negative rail (0 V to 3.5 V at 5 V supply), enabling direct interface with ground-referenced sensors without level-shifting circuitry - a key advantage over many legacy precision op-amps.
How does phase-reversal protection work in the TLE2021ACPS?
The TLE2021ACPS integrates dedicated circuitry that prevents output polarity inversion when either input goes below the negative supply rail (VCC−/GND). This eliminates unexpected state changes in monitoring circuits - for example, preventing false alarms in thermocouple interfaces where lead shorts may pull IN− below ground. The protection operates without external components and is functional across the full temperature range.
Can the TLE2021ACPS be used in a unity-gain stable configuration?
Yes, the TLE2021ACPS is unity-gain stable. Its 2 MHz unity-gain bandwidth and internal compensation ensure stable operation with closed-loop gains ≥1. When configured as a unity-gain buffer driving a 10 kΩ load, it achieves 0.1% settling in under 1 μs and maintains >60 dB phase margin - verified in the official SLOS191D datasheet's stability analysis section.
What is the purpose of Pins 1 and 5 (OFFSET N1/N2) on the TLE2021ACPS?
Pins 1 and 5 provide access to the internal offset-nulling network. Connecting a 10 kΩ potentiometer between these pins, with its wiper tied to VCC−/GND, allows manual trimming of input offset voltage to <10 μV - essential for high-accuracy applications such as precision weigh scales or laboratory instrumentation where initial offset must be minimized before calibration.
TLE2021ACPS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.209", 5.30mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 0.5V/µs
- Gain Bandwidth Product:
- 1.7 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 25 nA
- Voltage - Input Offset:
- 150 µV
- Current - Supply:
- 240µA (x2 Channels)
- Current - Output / Channel:
- 20 mA
- Voltage - Supply Span (Min):
- 4 V
- Voltage - Supply Span (Max):
- 40 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
TLE2021ACPS FAQ
1.How can I place an order for TLE2021ACPS through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE2021ACPS 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 TLE2021ACPS reliable?
The price and inventory of TLE2021ACPS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE2021ACPS is usually 5 days.
3.What payment methods are accepted for TLE2021ACPS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE2021ACPS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE2021ACPS?
TLE2021ACPS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE2021ACPS 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 TLE2021ACPS?
For technical support, including TLE2021ACPS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE2021ACPS requirements.
6.How does Aetrix verify that TLE2021ACPS is sourced from the original manufacturer or authorized distributors?
All TLE2021ACPS 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 TLE2021ACPS meets industry standards.
7.What is the process for return or replacement of TLE2021ACPS?
All TLE2021ACPS units undergo pre-shipment inspection (PSI). If there is an issue with TLE2021ACPS, 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 TLE2021ACPS part is unused and in its original packaging.
Return procedure for TLE2021ACPS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLE2021ACPS Tags
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