My Inquiry
My Account
Texas Instruments TLE2021ACD
- Part No.:
- TLE2021ACD
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLE2021ACD.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,179
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TLE2021ACD 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 TLE2021ACD datasheet, TLE2021ACD pinout, TLE2021ACD application, or TLE2021ACD equivalent, key selection criteria include its military-grade stability (M-suffix variants), low 300 µA supply current, 19 nV/√Hz input noise, and compatibility with both single-supply (5 V) and split-supply (±15 V) configurations in high-reliability analog signal chains.
Technical Context
The TLE2021ACD employs a complementary bipolar Excalibur process with isolated vertical PNP transistors, enabling improved unity-gain bandwidth and slew rate versus legacy OP21-class amplifiers. Its bias circuit ensures stable dc parameters over temperature and time-critical for long-term calibration integrity in measurement systems.
Phase-reversal protection prevents output polarity inversion when inputs fall below the negative supply rail, and the common-mode input range includes the negative rail under ±15 V operation-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 ultra-low-power operation in battery-backed instrumentation and portable test equipment. |
| Unity-Gain Bandwidth | 2 MHz - supports stable closed-loop gain ≥1 up to 2 MHz, sufficient for anti-aliasing filters and medium-speed data acquisition. |
| Slew Rate | 0.65 V/µs - allows clean reproduction of 100 kHz full-scale sine waves at 1 Vpp without distortion. |
| Input Offset Voltage | 100 µV max - ensures ≤0.002% error in 5 V full-scale 16-bit ADC front-ends without trimming. |
| Input Noise Voltage | 19 nV/√Hz - contributes <1.2 µVrms integrated noise in 10 Hz–10 kHz band, critical for microvolt-level sensor amplification. |
| Common-Mode Range | Includes negative rail (–15 V) - permits direct connection of single-ended transducer outputs referenced to system ground. |
Pinout & Package
The TLE2021ACD is housed in an 8-pin SOIC (D) package, with thermal pad exposed on bottom per TI packaging standard. Pin 1 is OFFSET N1 (offset null), Pin 2 is IN–, Pin 3 is IN+, Pin 4 is VCC–/GND, Pin 5 is OFFSET N2, Pin 6 is OUT, Pin 7 is VCC+, and Pin 8 is NC (no connect).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OFFSET N1 | Offset null adjustment terminal-used with external potentiometer to trim input offset voltage to zero. |
| 2 | IN– | Inverting input-accepts feedback network and differential signal inputs in standard op-amp configurations. |
| 3 | IN+ | Non-inverting input-connects to reference, sensor, or signal source in follower or summing topologies. |
| 4 | VCC– / GND | Negative supply or ground reference-supports single-supply (5 V) or dual-supply (±15 V) operation. |
| 5 | OFFSET N2 | Second offset null terminal-completes external trim circuit with Pin 1 for precision DC accuracy. |
| 6 | OUT | Amplified output-drives loads up to ±20 mA with rail-swing capability (±13.6 V at ±15 V supply). |
| 7 | VCC+ | Positive supply-accepts 5 V or ±15 V; internal regulation ensures stable bias under supply variation. |
| 8 | NC | No connect-internally unconnected; must remain floating per TI design guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| Phase-reversal protection | Prevents output polarity flip when IN– or IN+ drops below VCC–, eliminating latch-up risk in sensor fault conditions. |
| Low offset drift | 0.005 µV/month-ensures <1 µV total drift over 10 years, supporting unattended calibration in environmental monitoring systems. |
| Stable parameters over temp/time | ΔICC ≤10 µA over –40°C to +85°C-maintains consistent power budget and thermal profile in sealed enclosures. |
| Rail-included common-mode range | Operates with inputs at VCC–-eliminates need for input biasing resistors in ground-referenced thermocouple or strain gauge circuits. |
Applications
| Industrial Sensor Signal Conditioning | High-Accuracy Data Acquisition Front-End |
|---|---|
Use Scenario: Amplifying mV-level outputs from RTDs, thermocouples, or load cells in PLC analog input modules. IC Role / Device Role / Timing Role: Precision non-inverting amplifier with offset trim, configured for gain = 100–1000 and bandwidth <10 kHz. Use Value: 100 µV max VIO and 19 nV/√Hz noise enable resolution of sub-µV signals without post-amplifier digitization errors. | Use Scenario: Buffering and filtering signals before 16-bit SAR ADCs in portable multimeters and calibration standards. IC Role / Device Role / Timing Role: Unity-gain follower with low output impedance and 2 MHz bandwidth for driving ADC sample-and-hold capacitors. Use Value: 0.65 V/µs slew rate ensures <0.1% settling error in <1 µs, matching typical 1 MSPS ADC aperture times. |
| Single-Supply Instrumentation Amplifier Core | Military/Aerospace Analog Monitoring |
Use Scenario: First-stage gain block in 3-op-amp IA designs powered from 5 V rails in handheld medical devices. IC Role / Device Role / Timing Role: Differential input stage with matched TLE2021ACD pairs, leveraging rail-to-rail input for zero-biased sensor interfaces. Use Value: Common-mode range including ground allows direct connection to unipolar sensors without charge-pump bias networks. | Use Scenario: Analog monitoring of power supply voltages and temperature sensors in avionics subsystems operating from –55°C to +125°C. IC Role / Device Role / Timing Role: Precision comparator input buffer and voltage monitor amplifier in fault-detection circuits. Use Value: Specified performance over extended temperature range and low ΔICC ensure reliable operation without recalibration during thermal cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA277UA | Lower 0.1 µV/°C offset drift vs. TLE2021ACD's 2 µV/°C; higher 600 µA supply current; no phase-reversal protection. | Better long-term stability but lacks fault tolerance for sensor inputs that may go below ground. | Select OPA277UA where ultra-low drift dominates over fault robustness and power constraints. |
| LM7321MA | Higher 20 MHz GBW and 20 V/µs slew rate; rail-to-rail output; 1.2 mA supply current; not specified for extended temperature. | Superior speed and output swing, but unsuitable for military-temperature or ultra-low-power deployments. | Select LM7321MA for high-speed, single-supply applications where power and temperature range are secondary. |
Compared with OPA277UA and LM7321MA, the TLE2021ACD uniquely balances low power (300 µA), phase-reversal immunity, and extended temperature capability-making it optimal for ruggedized, battery-constrained precision analog systems requiring decades-long calibration stability.
Availability
TLE2021ACD is available at Aetrix Electronics and suitable for industrial sensor interfaces, portable test equipment, and aerospace analog monitoring requiring stable component supply across commercial and extended temperature grades.
Supply support for TLE2021ACD 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, embedded processing, and connectivity technologies, with over 90 years of innovation in precision analog design.
The TLE202x family was engineered for high-stability, low-power precision amplification in harsh environments-targeting military, aerospace, and industrial instrumentation where parameter drift and fault tolerance are mission-critical.
FAQ
What is the maximum operating temperature range for the TLE2021ACD?
The TLE2021ACD is rated for commercial operation from –40°C to +85°C. While M-suffix variants (e.g., TLE2021AM) are characterized over –55°C to +125°C, the 'C' suffix explicitly denotes the commercial temperature grade per TI's ordering nomenclature and datasheet Section 5.3.
Does the TLE2021ACD support single-supply operation at 5 V?
Yes, the TLE2021ACD is fully specified for 5 V single-supply operation per Section 5.4 of the datasheet, with guaranteed common-mode input range of 0 V to 3.2 V and output swing from 0.7 V to 4.3 V into 10 kΩ load-enabling direct use in microcontroller-based analog systems.
How does phase-reversal protection work in the TLE2021ACD?
The TLE2021ACD integrates internal circuitry that clamps input differential voltage and disables output stage conduction when either input falls below VCC–, preventing the output from reversing polarity-a known failure mode in conventional op-amps during sensor fault or power sequencing events.
Can the TLE2021ACD drive a 10 kΩ load across its full output voltage range?
Yes, the TLE2021ACD delivers guaranteed output swing of ±13.6 V into 10 kΩ at ±15 V supplies (Section 5.6), and 0.7 V to 4.3 V into 10 kΩ at 5 V supply (Section 5.4). Output current capability is ±20 mA, sufficient for standard instrumentation loads without external buffering.
Is the TLE2021ACD pin-compatible with older TI op-amps like the TL071?
No, the TLE2021ACD is not pin-compatible with TL071. While both are 8-pin SOIC op-amps, TLE2021ACD uses Pins 1 and 5 for offset null adjustment and Pin 8 as NC, whereas TL071 assigns Pin 1 to offset null, Pin 5 to NC, and has no dedicated second null terminal-requiring PCB redesign for substitution.
TLE2021ACD 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:
- 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
TLE2021ACD FAQ
1.How can I place an order for TLE2021ACD through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE2021ACD 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 TLE2021ACD reliable?
The price and inventory of TLE2021ACD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE2021ACD is usually 5 days.
3.What payment methods are accepted for TLE2021ACD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE2021ACD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE2021ACD?
TLE2021ACD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE2021ACD 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 TLE2021ACD?
For technical support, including TLE2021ACD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE2021ACD requirements.
6.How does Aetrix verify that TLE2021ACD is sourced from the original manufacturer or authorized distributors?
All TLE2021ACD 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 TLE2021ACD meets industry standards.
7.What is the process for return or replacement of TLE2021ACD?
All TLE2021ACD units undergo pre-shipment inspection (PSI). If there is an issue with TLE2021ACD, 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 TLE2021ACD part is unused and in its original packaging.
Return procedure for TLE2021ACD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLE2021ACD Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
