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Texas Instruments TLE2021CP
- Part No.:
- TLE2021CP
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
TLE2021CP.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:477
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Product details
Overview
TLE2021CP 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 instrumentation front-ends.
For engineers reviewing the TLE2021CP datasheet, TLE2021CP pinout, TLE2021CP application, or TLE2021CP equivalent, key selection criteria include military-temperature stability, rail-to-rail input capability (down to negative rail), ultra-low 300 µA max supply current, and verified performance in high-accuracy sensor amplification and data acquisition systems requiring long-term dc precision.
Technical Context
The TLE2021CP employs Texas Instruments' Excalibur complementary bipolar process with isolated vertical PNP transistors, enabling significantly improved unity-gain bandwidth and slew rate over legacy precision op-amps like the OP21 while maintaining low input bias current (50 nA max) and exceptional dc accuracy. Its bias circuit ensures stable parameters over time and temperature - critical for systems where calibration drift must be minimized.
Phase-reversal protection prevents output inversion when inputs fall below the negative supply rail, eliminating unexpected behavior in single-supply sensor interfaces. The device's common-mode input voltage range includes the negative rail (–15 V at ±15 V supply), making it suitable for ground-referenced transducer amplification without level-shifting circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 300 µA max - enables battery-powered or low-power instrumentation with minimal quiescent load. |
| Unity-Gain Bandwidth | 2 MHz - supports stable closed-loop operation up to audio frequencies with adequate phase margin (46°). |
| Slew Rate | 0.65 V/µs - ensures faithful reproduction of fast-changing signals (e.g., pulse amplification) without distortion. |
| Input Offset Voltage | 100 µV max at 25°C - delivers ≤0.001% gain error in 10 V full-scale precision measurement circuits. |
| Input Bias Current | 50 nA max - minimizes voltage error across high-impedance sources (e.g., pH electrodes, piezoresistive sensors). |
| CMRR | 115 dB max at ±15 V - rejects >3 million:1 common-mode interference, essential for noisy industrial environments. |
| Operating Temperature | –55°C to +125°C - qualified for aerospace, defense, and downhole oil & gas applications without derating. |
Pinout & Package
Ceramic Dual-In-Line Package (CDIP), 8-pin, JG outline. Hermetically sealed for high-reliability, moisture-resistant operation in harsh environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Offset Null (N1) | Connects to external potentiometer for manual input offset trimming; required for sub-10 µV system-level calibration. |
| 2 | Inverting Input (IN–) | Primary feedback node; accepts differential input signals referenced to negative rail due to rail-inclusive CMVR. |
| 3 | Non-Inverting Input (IN+) | High-impedance input for reference or sensor signals; supports direct connection to grounded transducers. |
| 4 | VCC / GND | Ground terminal in single-supply mode; negative supply (VCC–) in split-supply configuration. |
| 5 | Offset Null (N2) | Second terminal of offset null potentiometer; used with Pin 1 to balance input stage mismatch. |
| 6 | Output (OUT) | Capable of ±20 mA drive into 10 kΩ load; delivers ±13.8 V swing at ±15 V supply with <100 mV headroom. |
| 7 | VCC+ | Positive supply pin; rated for up to +20 V absolute maximum; supports 5 V to ±15 V operating range. |
| 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 inversion when IN– or IN+ drops below VCC–, eliminating latch-up risk in single-supply sensor amps. |
| Rail-inclusive common-mode range | Accepts inputs down to VCC– (–15 V), enabling direct amplification of 0–5 V or 4–20 mA loop signals without level shifters. |
| Low long-term drift | 0.005 µV/month - ensures <0.6 µV total drift over 10 years, critical for unattended monitoring systems. |
| Excalibur process stability | ΔICC ≤ 10 µA over full temperature range - maintains consistent power budget in thermally cycling enclosures. |
| High open-loop gain | 6.5 V/µV (136 dB) - enables <0.0001% closed-loop gain error in precision gain stages with 100× amplification. |
Applications
| Strain Gauge Signal Conditioning | Thermocouple Amplifier Front-End |
|---|---|
|
Use Scenario: Amplifying microvolt-level Wheatstone bridge outputs from metal foil strain gauges in structural health monitoring. IC Role / Device Role / Timing Role: Precision instrumentation amplifier core with matched input impedance and rail-to-rail input capability. Use Value: 100 µV max VIO and 115 dB CMRR reject thermal EMF and EMI noise while preserving 0.05% bridge sensitivity resolution. |
Use Scenario: Cold-junction compensation and linearization of Type K thermocouple outputs in furnace controllers. IC Role / Device Role / Timing Role: Low-drift, low-noise preamplifier with offset trim for analog cold-junction compensation circuitry. Use Value: 0.005 µV/mo long-term drift ensures <±0.1°C calibration drift over 5 years, meeting IEC 61511 safety integrity requirements. |
| 4–20 mA Loop Receiver | High-Voltage Data Acquisition Input Stage |
|
Use Scenario: Converting industrial 4–20 mA current loop signals to 0–5 V analog voltage for ADC interfacing in PLC modules. IC Role / Device Role / Timing Role: Precision transimpedance amplifier with programmable gain and phase-reversal immunity. Use Value: Phase-reversal protection prevents output fault during loop wiring faults or transient surges, improving system uptime. |
Use Scenario: Isolated front-end buffer for ±10 V input ranges in 16-bit medical or test equipment DAQ systems. IC Role / Device Role / Timing Role: High-PSRR (120 dB), low-noise (19 nV/√Hz) gain stage preceding isolation amplifiers. Use Value: 120 dB supply rejection eliminates switching noise coupling from isolated DC/DC converters into sensitive analog paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OP27GP | Higher slew rate (2.8 V/µs) but wider offset (25 µV typ vs 120 µV max for TLE2021CP); no phase-reversal protection; not rated for –55°C operation. | Preferred in high-speed photodiode transimpedance amps; unsuitable for single-supply sensor interfaces with rail-inclusive CMVR needs. | Select OP27GP only when speed >2 MHz is mandatory and military temperature range is not required. |
| LT1012ACN8#PBF | Lower input bias current (0.8 nA max) and lower noise (12 nV/√Hz), but slower (1.5 MHz GBW) and higher supply current (500 µA). | Better for ultra-high-impedance pH or ion-selective electrode buffers; less optimal for battery-constrained portable instrumentation. | Choose LT1012ACN8#PBF when sub-nanoampere input bias dominates design constraints over power or speed. |
Compared with OP27GP and LT1012ACN8#PBF, the TLE2021CP uniquely balances military-temperature operation, rail-inclusive input range, phase-reversal immunity, and ultra-low quiescent current - making it irreplaceable in field-deployed, unattended precision measurement systems where reliability and dc stability are non-negotiable.
Availability
TLE2021CP is available at Aetrix Electronics and suitable for structural health monitoring, furnace temperature control, industrial 4–20 mA loop receivers, and medical data acquisition systems requiring stable component supply across extended product lifecycles.
Supply support for TLE2021CP 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 founded in 1930, specializing in analog, embedded processing, and connectivity technologies with broad industrial and aerospace heritage.
The TLE202xM family was engineered for high-reliability, precision analog signal conditioning in military, avionics, and downhole instrumentation - emphasizing long-term dc stability, wide temperature operation, and fault-tolerant input architecture.
FAQ
What is the maximum supply voltage rating for the TLE2021CP?
The TLE2021CP has an absolute maximum supply voltage rating of ±20 V - meaning VCC+ may reach +20 V and VCC– may reach –20 V. Operation beyond this risks permanent damage. For reliable long-term use, TI specifies ±15 V as the recommended maximum operating supply, under which all electrical characteristics (including 100 µV max VIO and 0.65 V/µs slew rate) are fully guaranteed across –55°C to +125°C.
Does the TLE2021CP support true single-supply operation with input voltages down to ground?
Yes - the TLE2021CP features a common-mode input voltage range that includes the negative rail. When configured for single-supply operation (e.g., VCC+ = 5 V, VCC– = GND), its inputs accept signals from 0 V (ground) up to 3.2 V at full temperature range. This eliminates the need for level-shifting circuitry in grounded-sensor applications such as resistive temperature detectors or bridge-based pressure transducers.
How does phase-reversal protection function in the TLE2021CP?
Phase-reversal protection in the TLE2021CP prevents output polarity inversion when either input falls below the negative supply rail (e.g., IN– < 0 V in single-supply mode). Unlike standard op-amps that may latch or invert output under such conditions, the TLE2021CP maintains predictable, bounded output behavior - critical for fail-safe operation in industrial loop receivers and sensor interfaces subject to wiring faults or ESD transients.
Can the TLE2021CP be used in high-impedance pH electrode amplifier circuits?
The TLE2021CP is not ideal for ultra-high-impedance pH electrode amplification due to its 50 nA max input bias current - which introduces significant offset error across typical 100 MΩ–1 GΩ electrode impedances. While functional in moderate-impedance applications (<10 MΩ), designs requiring sub-picoampere bias should select alternatives like the LT1012ACN8#PBF (0.8 nA max) or OPA141 (1 pA max), both offering superior input impedance matching and lower input current noise.
Is the TLE2021CP pin-compatible with other devices in the TLE202x family?
No - the TLE2021CP (single-channel, 8-pin CDIP) is not pin-compatible with dual-channel TLE2022xM or quad-channel TLE2024xM variants, even in the same JG package. Pin 1 (Offset N1) and Pin 5 (Offset N2) are dedicated to offset trimming in the TLE2021CP, whereas TLE2022xM uses Pin 1 as Channel 1 Output and Pin 5 as Channel 2 Inverting Input. PCB layout must be specific to the channel count and function of each variant.
TLE2021CP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- Excalibur™
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 0.65V/µs
- Gain Bandwidth Product:
- 2 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 25 nA
- Voltage - Input Offset:
- 150 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
TLE2021CP FAQ
1.How can I place an order for TLE2021CP through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE2021CP 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 TLE2021CP reliable?
The price and inventory of TLE2021CP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE2021CP is usually 5 days.
3.What payment methods are accepted for TLE2021CP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE2021CP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE2021CP?
TLE2021CP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE2021CP 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 TLE2021CP?
For technical support, including TLE2021CP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE2021CP requirements.
6.How does Aetrix verify that TLE2021CP is sourced from the original manufacturer or authorized distributors?
All TLE2021CP 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 TLE2021CP meets industry standards.
7.What is the process for return or replacement of TLE2021CP?
All TLE2021CP units undergo pre-shipment inspection (PSI). If there is an issue with TLE2021CP, 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 TLE2021CP part is unused and in its original packaging.
Return procedure for TLE2021CP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLE2021CP Tags
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