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Texas Instruments TLE2021ACP
- Part No.:
- TLE2021ACP
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
TLE2021ACP.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,828
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Product details
Overview
TLE2021ACP 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, supports both ±15 V and 5 V single-supply configurations, and features phase-reversal protection for robust low-level signal conditioning in sensor front-ends and military-grade instrumentation.
For engineers reviewing the TLE2021ACP datasheet, TLE2021ACP pinout, TLE2021ACP application, or TLE2021ACP equivalent, key selection criteria include its military-temperature-rated ceramic DIP-8 package, low 300 µA max supply current, 19 nV/√Hz input voltage noise, stable dc performance over time (0.005 µV/month drift), and rail-to-rail-compatible common-mode input range extending to the negative rail.
Technical Context
The TLE2021ACP employs Texas Instruments' Excalibur complementary bipolar process with isolated vertical PNP transistors, enabling significantly improved unity-gain bandwidth and slew rate versus legacy OP21-based designs. Its bias circuit architecture ensures exceptional parameter stability across temperature and time-critical for precision analog signal chains requiring long-term calibration integrity.
Phase-reversal protection prevents output polarity inversion when either input falls below the negative supply rail, eliminating unexpected behavior in high-impedance sensor interfaces. The device's common-mode input voltage range includes the negative rail (–15 V at ±15 V supply), supporting true single-supply operation with ground-referenced inputs in 5 V systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply current | 300 µA max - enables ultra-low-power operation in battery-backed or thermally constrained military systems |
| Unity-gain bandwidth | 2 MHz - supports stable closed-loop gain ≥1 up to audio and low-speed data acquisition frequencies |
| Slew rate | 0.65 V/µs - ensures faithful reproduction of 100 kHz full-scale sine waves without distortion |
| Input offset voltage | 100 µV max - reduces initial error to ≤0.002% of 5 V full scale, minimizing calibration burden |
| Input voltage noise | 19 nV/√Hz - preserves SNR in microvolt-level sensor amplification (e.g., strain gauges, thermopiles) |
| Operating temperature | –55°C to +125°C - qualified for aerospace, defense, and downhole industrial environments |
| Common-mode input range | Includes negative rail (–15 V at ±15 V) - allows direct interface to ground-referenced transducers in single-supply designs |
Pinout & Package
Ceramic Dual-In-Line Package (CDIP-8, JG suffix), hermetically sealed, lead-free compatible, rated for 300°C soldering (1.6 mm from case, 60 s).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Offset Null (N1) | Connects to external potentiometer for fine-tuning input offset voltage; required for sub-10 µV precision applications |
| 2 | Inverting Input (IN–) | Differential input node; accepts signals referenced to system ground or negative rail |
| 3 | Non-inverting Input (IN+) | Differential input node; supports rail-to-rail common-mode range including negative supply |
| 4 | VCC / GND | Ground terminal for single-supply operation (5 V); negative supply terminal for split-supply (±15 V) |
| 5 | Offset Null (N2) | Second terminal of offset null network; completes 3-terminal trim configuration with Pin 1 and external resistor |
| 6 | Output (OUT) | Class AB output stage capable of ±20 mA drive into 10 kΩ load; swing limited to ±13.6 V at ±15 V supply |
| 7 | VCC+ | Positive supply terminal: +5 V (single) or +15 V (split); decoupling capacitor required for stability |
| 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 output polarity flip when IN– or IN+ drops below VCC–, eliminating latch-up risk in sensor fault conditions |
| Low long-term drift | 0.005 µV/month - ensures <1 µV total offset shift over 5 years, critical for unattended field instrumentation |
| High open-loop gain | 6.5 V/µV (136 dB) - maintains loop gain >60 dB at 10 kHz, enabling precise closed-loop gain accuracy |
| Supply flexibility | Specified for both ±15 V and 5 V single-supply operation - simplifies migration between legacy and modern power architectures |
| Military temperature rating | –55°C to +125°C operation with full parametric guarantees - eliminates derating calculations for harsh-environment designs |
Applications
| Strain Gauge Signal Conditioning | Thermocouple Amplifier Front-End |
|---|---|
|
Use Scenario: Amplifying mV-level Wheatstone bridge outputs from load cells in structural health monitoring systems operating at –40°C to +85°C ambient. IC Role / Device Role / Timing Role: Precision DC-coupled difference amplifier with offset null capability, rejecting common-mode bridge excitation noise while preserving microvolt-level differential signals. Use Value: 100 µV max offset and 0.005 µV/month drift ensure <0.1% full-scale error accumulation over 10-year deployments without recalibration. |
Use Scenario: Cold-junction compensation and linearization of Type K thermocouples in industrial furnace controllers exposed to thermal cycling. IC Role / Device Role / Timing Role: Low-noise, rail-to-rail-input instrumentation amplifier stage accepting grounded thermocouple leads and reference junction sensor outputs. Use Value: 19 nV/√Hz input noise and –15 V to +13.2 V common-mode range enable accurate sub-0.5°C measurement resolution at 0–1200°C ranges. |
| Military Data Acquisition Channel | Avionics Sensor Interface |
|
Use Scenario: Analog input channel in DO-160G-compliant flight data recorders requiring EMI-hardened, temperature-stable signal conditioning. IC Role / Device Role / Timing Role: First-stage gain block with phase-reversal protection, buffering high-impedance transducer outputs before ADC sampling at 100 kSPS. Use Value: Hermetic CDIP-8 package and –55°C to +125°C qualification eliminate thermal-induced gain/offset drift during rapid altitude changes. |
Use Scenario: Pressure transducer signal conditioning in aircraft environmental control systems where vibration and wide temperature swings occur. IC Role / Device Role / Timing Role: Low-power, high-reliability op-amp providing gain and filtering prior to ARINC 429 bus interface ICs. Use Value: 300 µA max supply current extends backup battery life; 2 MHz bandwidth supports anti-aliasing filter cutoffs up to 200 kHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA277CP | Lower 10 µV max offset, higher 2.5 MHz GBW, but 1.2 mA supply current and only commercial temp range (0°C to +70°C) | Not suitable for military/aerospace deployments requiring extended temperature operation or ultra-low power | Select OPA277CP only for lab-grade test equipment where offset and bandwidth outweigh power and temperature needs |
| LM108AJ/883 | Same military temp range and CDIP-8 package, but older µA741-derived architecture: 1.5 MHz GBW, 0.5 V/µs slew, 1.5 mV offset | Lacks phase-reversal protection and exhibits higher long-term drift (>1 µV/month), limiting use in maintenance-free systems | Choose LM108AJ/883 only for legacy redesigns where footprint compatibility is mandatory and performance trade-offs are acceptable |
Compared with OPA277CP and LM108AJ/883, the TLE2021ACP uniquely balances military temperature reliability, ultra-low quiescent current, and integrated phase-reversal protection-making it the only option among the three qualified for unattended, low-power, high-stability sensor front-ends in defense platforms.
Availability
TLE2021ACP is available at Aetrix Electronics and suitable for structural health monitoring, avionics sensor interfaces, and military data acquisition systems requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for TLE2021ACP 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 mission-critical systems demanding guaranteed performance across –55°C to +125°C, combining Excalibur process advantages with robust input protection and long-term stability.
FAQ
What is the maximum supply voltage rating for the TLE2021ACP?
The TLE2021ACP has an absolute maximum supply voltage rating of ±20 V (VCC+ = +20 V, VCC– = –20 V). Operation beyond this risks permanent damage. For reliable long-term use, TI specifies recommended operating conditions of ±2 V to ±20 V, with full parametric guarantees maintained across the entire –55°C to +125°C temperature range at ±15 V and 5 V supplies. Always observe derating curves in Section 5.2 for power dissipation limits.
Does the TLE2021ACP require external offset nulling in all applications?
The TLE2021ACP includes dedicated offset null pins (1 and 5) to support external trimming, but nulling is not mandatory for all applications. With a maximum input offset voltage of 100 µV, many precision circuits-such as 12-bit data acquisition channels-achieve sufficient accuracy without trimming. However, applications demanding sub-10 µV offset (e.g., high-resolution weigh scales or scientific instruments) should implement a 10-kΩ potentiometer between Pins 1 and 5, with wiper to VCC–, per Figure 4-1 in the TLE2021ACP datasheet.
How does phase-reversal protection function in the TLE2021ACP?
Phase-reversal protection in the TLE2021ACP prevents the output from inverting polarity when either input (IN+ or IN–) falls below the negative supply rail (VCC–). This is achieved via internal clamping circuitry that blocks reverse current flow into the input stage, eliminating the latch-up and erroneous output states seen in unprotected op-amps. This feature is essential for interfacing with sensors that may transiently go below ground-such as piezoelectric accelerometers or floating thermocouples-without requiring external diode networks.
Can the TLE2021ACP operate from a single 5 V supply with input signals referenced to ground?
Yes, the TLE2021ACP is explicitly specified for 5 V single-supply operation. Its common-mode input voltage range extends from 0 V to 3.2 V at 5 V supply (per Section 5.3), fully encompassing ground-referenced inputs. The output can swing from 0.7 V to 4.3 V (Section 5.4), enabling direct interfacing with 5 V ADCs or logic. No level-shifting circuitry is needed, provided the input signal remains within the guaranteed VICR and output load stays within ±20 mA limits.
What is the long-term input offset voltage drift specification for the TLE2021ACP?
The TLE2021ACP exhibits a typical long-term input offset voltage drift of 0.005 µV per month, measured under accelerated life testing at 150°C and extrapolated to 25°C using the Arrhenius model (Section 5.4, footnote 2). This translates to less than 0.3 µV drift over one year and under 1 µV over five years-significantly lower than standard precision op-amps. This stability is enabled by the Excalibur process's inherent parameter retention and makes the TLE2021ACP suitable for calibration-free field deployments in remote instrumentation.
TLE2021ACP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- Excalibur™
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- 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:
- Through Hole
- Supplier Device Package:
- 8-PDIP
TLE2021ACP FAQ
1.How can I place an order for TLE2021ACP through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE2021ACP 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 TLE2021ACP reliable?
The price and inventory of TLE2021ACP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE2021ACP is usually 5 days.
3.What payment methods are accepted for TLE2021ACP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE2021ACP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE2021ACP?
TLE2021ACP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE2021ACP 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 TLE2021ACP?
For technical support, including TLE2021ACP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE2021ACP requirements.
6.How does Aetrix verify that TLE2021ACP is sourced from the original manufacturer or authorized distributors?
All TLE2021ACP 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 TLE2021ACP meets industry standards.
7.What is the process for return or replacement of TLE2021ACP?
All TLE2021ACP units undergo pre-shipment inspection (PSI). If there is an issue with TLE2021ACP, 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 TLE2021ACP part is unused and in its original packaging.
Return procedure for TLE2021ACP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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