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Texas Instruments TLE2021AIDR
- Part No.:
- TLE2021AIDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLE2021AIDR.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,177
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Product details
Overview
TLE2021AIDR 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 front-ends and sensor interface circuits.
For engineers reviewing the TLE2021AIDR datasheet, TLE2021AIDR pinout, TLE2021AIDR application, or TLE2021AIDR equivalent, key selection criteria include its military-grade stability (10 µA supply-current change over temperature), low 300 µA max quiescent current, 19 nV/√Hz input voltage noise, and compatibility with both ±15 V and 5 V single-supply configurations in precision analog systems.
Technical Context
The TLE2021AIDR employs Texas Instruments' Excalibur complementary bipolar process with isolated vertical PNP transistors, enabling significantly improved AC performance over legacy precision op-amps like the OP21 while retaining excellent DC accuracy. Its bias circuit architecture ensures stable offset voltage drift (0.005 µV/month) and minimal supply-current variation across temperature.
Phase-reversal protection prevents output inversion when inputs go below the negative supply rail-a critical feature for unipolar sensor interfaces. The device's common-mode input range includes the negative rail under ±15 V operation (–15 V to +13.2 V), and it maintains 136 dB open-loop gain and 115 dB CMRR at 25°C, supporting high-precision closed-loop configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 300 µA max - enables ultra-low-power precision amplification in battery-operated instrumentation. |
| Unity-Gain Bandwidth | 2 MHz - supports stable closed-loop operation up to ~1.2 MHz with adequate phase margin (46°). |
| Slew Rate | 0.65 V/µs - allows faithful reproduction of signals up to ~200 kHz at 1 VPP without distortion. |
| Input Offset Voltage | 100 µV max - ensures ≤0.001% gain error in 10 V full-scale 16-bit ADC front-ends. |
| Input Voltage Noise | 19 nV/√Hz - critical for preserving SNR in low-amplitude thermocouple or strain gauge amplification. |
| CMRR | 115 dB min at ±15 V - rejects >3 million:1 common-mode interference in differential sensing applications. |
| Operating Temp Range | –40°C to +85°C - qualified for industrial environments without derating. |
Pinout & Package
Package: SOIC-8 (D package), 150 mil width, surface-mount, JEDEC MS-012AC compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Offset Null (N1) | Connects to external potentiometer for manual input offset trimming; unused in most modern designs. |
| 2 | Inverting Input (–) | Differential input node; accepts feedback network for inverting or transimpedance configurations. |
| 3 | Non-Inverting Input (+) | Differential input node; referenced to ground or bias voltage in non-inverting amplifier topologies. |
| 4 | V– (GND / –VCC) | Negative supply terminal; serves as ground reference in single-supply mode or –15 V in dual-supply mode. |
| 5 | Offset Null (N2) | Second terminal of offset null potentiometer; paired with Pin 1 for fine calibration. |
| 6 | Output | Amplified output stage; drives loads ≥10 kΩ with ±13.6 V swing at ±15 V supply. |
| 7 | V+ (+VCC) | Positive supply terminal; accepts +5 V (single) or +15 V (dual); internal ESD protection to ±20 V absolute max. |
| 8 | NC | No connect - internally unconnected; must remain floating per TI design guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| Phase-reversal protection | Prevents output latch-up or polarity inversion when IN– or IN+ drops below V–, eliminating need for external clamping diodes in sensor interfaces. |
| Rail-included common-mode range | Accepts input signals at V– (0 V in single-supply, –15 V in dual-supply), enabling direct interfacing with grounded sensors and current-sense resistors. |
| Low long-term drift | 0.005 µV/month offset drift ensures calibration stability over years-critical for medical and metrology equipment requiring infrequent recalibration. |
| High open-loop gain | 6.5 V/µV (136 dB) minimizes gain error in high-precision closed-loop gains (e.g., G = 1000), maintaining accuracy even with finite loop gain. |
| Military-temperature stability | ΔICC ≤ 10 µA over –55°C to +125°C (M-suffix variants); TLE2021AIDR maintains <1% ICC shift across industrial range. |
Applications
| Strain Gauge Signal Conditioning | Thermocouple Amplifier Front-End |
|---|---|
Use Scenario: Amplifying mV-level Wheatstone bridge outputs from load cells in industrial weighing systems. IC Role / Device Role / Timing Role: Precision instrumentation amplifier core (configured as difference amp with external RES11A network), rejecting bridge common-mode voltage and amplifying differential strain signal. Use Value: 100 µV max VIO and 115 dB CMRR ensure ≤0.01% measurement error at 10 mV full scale; rail-included input accommodates bridge excitation referenced to system ground. | Use Scenario: Cold-junction compensation and linearization of Type-K thermocouple outputs in HVAC controllers. IC Role / Device Role / Timing Role: Low-noise, low-drift preamplifier stage before cold-junction sensor and ADC, operating from 5 V single supply. Use Value: 19 nV/√Hz noise floor preserves microvolt-level thermocouple resolution; 0.005 µV/month drift avoids recalibration over multi-year product lifetime. |
| Medical ECG Analog Front-End | Programmable Gain Instrumentation Amplifier (PGIA) Core |
Use Scenario: First-stage amplification of 0.5–5 mV biopotential signals with high common-mode rejection in portable ECG monitors. IC Role / Device Role / Timing Role: Input buffer and gain-setting stage in 3-op-amp IA topology, leveraging rail-to-negative-rail input for optimal dynamic range. Use Value: Phase-reversal protection eliminates risk of output saturation during electrode pop or lead disconnect events; 300 µA supply current enables multi-hour battery operation. | Use Scenario: Programmable gain stage in automated test equipment (ATE) where gain is switched via external relays or analog switches. IC Role / Device Role / Timing Role: High-stability, low-noise gain block whose closed-loop gain is set by digitally controlled resistor networks. Use Value: 2 MHz bandwidth supports fast gain switching (<10 µs settling to 0.1%) without overshoot; 136 dB AVD ensures gain accuracy remains within 0.01% across all settings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA227UA | Lower 3.6 µV max VIO, higher 8 MHz GBW, but 2.5 mA ICC - 8× higher supply current than TLE2021AIDR. | Better for high-speed, ultra-precision DC-coupled systems where power is not constrained. | Select OPA227UA only if sub-5 µV offset and >5 MHz bandwidth are required; avoid when battery life or thermal budget is critical. |
| LMC6061IMX | CMOS input (0.01 pA IIB), rail-to-rail output, but 1.4 MHz GBW and 120 µV VIO - trades speed and offset for ultra-low input bias. | Ideal for high-impedance pH or photodiode sensors where input leakage dominates error. | Choose LMC6061IMX for >1 GΩ source impedances; TLE2021AIDR remains superior for bipolar-source, medium-impedance, low-noise applications. |
Compared with OPA227UA and LMC6061IMX, the TLE2021AIDR uniquely balances ultra-low quiescent current (300 µA), 2 MHz bandwidth, and 100 µV offset-making it optimal for industrial sensor nodes requiring precision, longevity, and moderate speed without CMOS input limitations or excessive power draw.
Availability
TLE2021AIDR is available at Aetrix Electronics and suitable for industrial sensor interfaces, portable medical instrumentation, and programmable logic controller (PLC) analog I/O modules requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for TLE2021AIDR 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 innovation including the TL07x, OPx27, and Excalibur families.
The TLE202x series was engineered specifically for high-reliability, low-power precision analog signal conditioning in military, aerospace, and industrial systems-emphasizing parameter stability over temperature, time, and supply variations.
FAQ
What is the maximum supply voltage rating for the TLE2021AIDR?
The TLE2021AIDR has an absolute maximum supply voltage rating of ±20 V (VCC+ = +20 V, VCC– = –20 V). Operation beyond this risks permanent damage. Recommended operating range is ±2 V to ±20 V, with full specifications guaranteed at ±15 V and 5 V single-supply configurations. Always observe derating curves for power dissipation above 25°C ambient.
Does the TLE2021AIDR support true single-supply operation with input signals down to ground?
Yes-the TLE2021AIDR features a common-mode input voltage range that includes the negative rail. At 5 V single supply, its specified VICR extends from 0 V to 3.2 V, allowing direct connection of grounded sensors (e.g., current-shunt resistors, RTDs) without level-shifting circuitry. This rail-included input is enabled by its Excalibur bipolar input stage.
How does phase-reversal protection work in the TLE2021AIDR, and why is it important?
The TLE2021AIDR 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. This eliminates unexpected output saturation during transient overvoltage, sensor disconnection, or ESD events. In applications like strain gauge bridges or thermocouple interfaces, it removes the need for external clamping diodes and associated board space and leakage errors.
What is the typical input voltage noise density of the TLE2021AIDR, and at what frequency is it specified?
The TLE2021AIDR exhibits 19 nV/√Hz typical input voltage noise density at 1 kHz and 19 nV/√Hz at 10 Hz under ±15 V supply conditions. This low, flat noise profile across the audio and DC-coupled sensor bandwidth makes it well-suited for amplifying microvolt-level signals from thermocouples, piezoresistive sensors, and low-output transducers without degrading system SNR.
Can the TLE2021AIDR be used in a unity-gain stable configuration, and what is its phase margin?
Yes-the TLE2021AIDR is unity-gain stable with a measured phase margin of 46° at 25°C under ±15 V supply. Its internal compensation ensures stable operation with closed-loop gains ≥1, including voltage followers and inverting amplifiers. No external compensation is required, simplifying layout and reducing bill-of-materials cost in precision buffer and gain-stage applications.
TLE2021AIDR 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:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TLE2021AIDR FAQ
1.How can I place an order for TLE2021AIDR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE2021AIDR 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 TLE2021AIDR reliable?
The price and inventory of TLE2021AIDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE2021AIDR is usually 5 days.
3.What payment methods are accepted for TLE2021AIDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE2021AIDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE2021AIDR?
TLE2021AIDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE2021AIDR 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 TLE2021AIDR?
For technical support, including TLE2021AIDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE2021AIDR requirements.
6.How does Aetrix verify that TLE2021AIDR is sourced from the original manufacturer or authorized distributors?
All TLE2021AIDR 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 TLE2021AIDR meets industry standards.
7.What is the process for return or replacement of TLE2021AIDR?
All TLE2021AIDR units undergo pre-shipment inspection (PSI). If there is an issue with TLE2021AIDR, 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 TLE2021AIDR part is unused and in its original packaging.
Return procedure for TLE2021AIDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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