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Texas Instruments OPA452FAKTWT
- Part No.:
- OPA452FAKTWT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- TO-263-8, D2PAK (7 Leads + Tab), TO-263CA
- Datasheet:
-
OPA452FAKTWT.pdf
- Description:
- IC OPAMP GP 1 CIRC DDPAK/TO263-7
- Quantity:
- Payment:
- Shipping:
Inventory:411
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Product details
Overview
OPA452FAKTWT from Texas Instruments is a high-voltage, high-current operational amplifier designed for demanding linear power stages. It delivers ±50mA continuous output current, supports ±10V to ±40V (80V total) supply range, achieves 1.8MHz gain-bandwidth product with unity-gain stability, and operates across –40°C to +125°C junction temperature - enabling use in piezoelectric drivers, servo amplifiers, and high-voltage test equipment.
For engineers reviewing the OPA452FAKTWT datasheet, OPA452FAKTWT pinout, OPA452FAKTWT application, or OPA452FAKTWT equivalent, this page provides verified package mapping (DDPAK-7), thermal shutdown flag behavior, rail-to-rail output swing capability (within 4V of rails at ±50mA), input protection clamping, and confirmed alternative options for high-voltage op amp selection.
Technical Context
The OPA452FAKTWT employs a fully protected monolithic architecture with internal thermal shutdown (triggering at +160°C, reset at +145°C) and output current limiting (~±125mA). Its unity-gain stable design enables direct use in noninverting, inverting, and voltage-follower configurations without external compensation.
It features laser-trimmed precision circuitry delivering ±3mV max input offset voltage (±6mV over temperature), 94dB CMRR at 25°C, and low noise (21nV/√Hz input voltage noise at 1kHz). The Flag pin provides a current-based thermal status signal (50nA normal / 140µA shutdown), allowing direct interfacing with CMOS or HCT logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | ±10V to ±40V (80V total); supports asymmetric supplies (e.g., +70V/–10V) without performance degradation. |
| Output Current | ±50mA continuous; short-circuit current limited to ±125mA for robust overload protection. |
| Gain-Bandwidth Product | 1.8MHz at ±40V; enables stable closed-loop operation up to 100kHz at G = 18. |
| Output Voltage Swing | (V–) + 4.0V to (V+) – 4.0V at ±50mA load; ensures >72V p-p usable swing with ±40V supplies. |
| Input Offset Voltage | ±3mV typical (±6mV max over –40°C to +125°C); enables accurate DC-coupled amplification in precision transducer interfaces. |
| Slew Rate | +7.2 V/µs / –10 V/µs; supports fast settling (2µs to 0.1%) for step-driven loads like piezo actuators. |
| Thermal Shutdown Flag | Current-mode indicator: 50nA (normal) → 140µA (shutdown); simplifies system-level thermal monitoring without ADC. |
Pinout & Package
OPA452FAKTWT uses a 7-lead DDPAK (TO-263) surface-mount package with electrically connected tab tied to V–. Thermal performance relies on direct soldering of the tab to PCB copper area (θJA reduces with increased copper area).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | NC | No internal connection; must be left unconnected or grounded per layout best practice. |
| 2 | V– | Negative supply input; tab is internally connected to this pin - do not route current through tab. |
| 3 | VO | Amplifier output; capable of ±50mA drive into resistive or capacitive loads with thermal foldback. |
| 4 | V+ | Positive supply input; supports up to +40V; bypass with ≥0.1µF ceramic capacitor near pin. |
| 5,6 | VIN–, VIN+ | Inverting and noninverting inputs; feature ESD diode clamps (±0.5V beyond rails), require ≤5mA input current. |
| 7 | Flag | Open-collector thermal status output; sinks 140µA when junction exceeds +160°C. |
Key Features
| Feature | Design Value |
|---|---|
| Wide Supply Range | Operates from ±10V to ±40V with fully specified performance - eliminates need for separate high-voltage bias rails in mixed-signal systems. |
| Rail-Compatible Output Swing | Delivers output within 4V of either rail at full ±50mA load - maximizes dynamic range in high-voltage applications like audio power stages. |
| Integrated Thermal Protection | Self-shutdown at +160°C with automatic recovery at +145°C - prevents catastrophic failure during sustained overload or inadequate heatsinking. |
| Current-Limited Output Stage | Hard-limits output current to ~±125mA - protects both device and downstream load during fault conditions like shorted transducers. |
| Laser-Trimmed Precision | ±3mV input offset voltage and 94dB CMRR at 25°C - enables accurate DC gain control in closed-loop servo and sensor conditioning circuits. |
Applications
| Piezoelectric Actuator Driver | High-Voltage Test Equipment |
|---|---|
|
Use Scenario: Driving stacked piezo elements requiring ±200V p-p excitation waveforms at kHz frequencies. IC Role / Device Role / Timing Role: High-voltage, high-slew-rate output stage amplifying DAC-generated control signals with precise amplitude fidelity. Use Value: Delivers 1.8MHz GBW and +7.2V/µs slew rate to reproduce fast piezo positioning steps while maintaining <0.0008% THD+N at 1kHz. |
Use Scenario: Programmable voltage source in automated test systems generating calibrated ±30V outputs with 16-bit resolution. IC Role / Device Role / Timing Role: Precision buffer and level-shifter between low-voltage DAC and high-voltage output stage. Use Value: ±3mV offset and 94dB CMRR ensure sub-mV absolute accuracy across full ±40V supply range, critical for metrology-grade calibration. |
| Audio Power Amplifier | Servo Motor Driver |
|
Use Scenario: Class-AB headphone amplifier delivering 100mW into 32Ω with ultra-low distortion. IC Role / Device Role / Timing Role: Single-supply or dual-supply output driver stage with rail-swing optimization. Use Value: 72V p-p usable output swing and 21nV/√Hz input noise enable >110dB SNR in high-fidelity audio paths. |
Use Scenario: Position-loop error amplifier in industrial servo drives controlling 48V brushless motors. IC Role / Device Role / Timing Role: High-stability, high-output-current error amplifier driving gate driver inputs. Use Value: Unity-gain stability and thermal flag output allow safe, predictable operation under continuous 50mA load with real-time fault detection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA453FAKTWT | Higher 7.5MHz GBW but requires minimum gain ≥5; not unity-gain stable. | Better suited for fixed-gain instrumentation or wideband signal conditioning where gain ≥5 is acceptable. | Select OPA453FAKTWT only if closed-loop gain is ≥5 and bandwidth >1.8MHz is required; otherwise OPA452FAKTWT offers broader configuration flexibility. |
| OPA547TP | Higher 1A output current, programmable current limit, and disable function; larger TO-220 package. | Targeted at higher-power motor drives or lab power supplies needing >50mA output. | Choose OPA547TP when output current >50mA or programmable current limiting is mandatory; OPA452FAKTWT remains optimal for compact, cost-sensitive 50mA designs. |
Compared with OPA453FAKTWT and OPA547TP, the OPA452FAKTWT uniquely balances unity-gain stability, 50mA drive, DDPAK-7 footprint, and integrated thermal flag - making it the preferred choice for space-constrained, medium-power linear amplifiers requiring flexible gain configuration and system-level thermal awareness.
Availability
OPA452FAKTWT is available at Aetrix Electronics and suitable for piezoelectric actuator drivers, high-voltage test equipment, and servo motor controllers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for OPA452FAKTWT 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 high-reliability power solutions.
The OPA452FAKTWT belongs to TI's high-voltage operational amplifier product line, engineered specifically for applications demanding robust output drive, wide supply tolerance, and integrated protection - including transducer excitation, industrial automation, and test instrumentation.
FAQ
What is the maximum continuous output current of the OPA452FAKTWT?
The OPA452FAKTWT delivers ±50mA continuous output current into resistive loads. Its internal current-limit circuit activates at approximately ±125mA during short-circuit events, providing protection without external components. This rating holds across the full operating temperature range (–40°C to +125°C) and supply range (±10V to ±40V), making the OPA452FAKTWT suitable for sustained high-current linear amplification tasks such as piezo driver stages and servo error amplifiers.
Does the OPA452FAKTWT require external compensation for unity-gain operation?
No, the OPA452FAKTWT is unity-gain stable and does not require external compensation capacitors for G = 1 configurations. Its internal compensation ensures phase margin >45° across all supply voltages (±10V to ±40V) and load conditions up to 100pF. This allows direct implementation in voltage followers, noninverting buffers, and inverting amplifiers without risk of oscillation - unlike the OPA453FAKTWT, which requires minimum gain ≥5.
How is the thermal shutdown flag (Pin 7) used in system design?
The Flag pin of the OPA452FAKTWT outputs a current signal: ~50nA during normal operation and ~140µA when thermal shutdown is active. This current can be converted to a logic-level voltage using a pull-up resistor (e.g., 39kΩ to +5V for HCT logic), enabling direct interface with microcontrollers or FPGA GPIOs. Monitoring this pin allows real-time thermal fault detection and system-level response - such as reducing drive amplitude or initiating cooldown - without requiring analog-to-digital conversion.
What is the safe operating area (SOA) limitation for the OPA452FAKTWT at ±40V supply?
At ±40V supply, the OPA452FAKTWT SOA restricts simultaneous high voltage and high current: for example, delivering ±50mA requires the output voltage to remain within ~±35V to avoid exceeding safe internal power dissipation. The SOA curve shows that output current must decrease as (VS – VO) increases - e.g., at |VS – VO| = 60V, max safe current drops to ~15mA. Proper heatsinking and supply voltage derating are essential for sustained high-power operation.
Can the OPA452FAKTWT drive capacitive loads, and what is the recommended approach?
Yes, the OPA452FAKTWT can drive capacitive loads, but stability requires careful layout and optional external compensation. For loads >100pF, TI recommends adding a series resistor (e.g., 5Ω–50Ω) in the feedback path and/or a small capacitor (e.g., 270pF) across the feedback resistor to maintain phase margin. Figure 5 in the SBOS127C datasheet details a proven RC network (RF = 5kΩ, CF = 270pF, CS = 1.8nF) that preserves stability with 10nF loads - critical for driving piezo cables or long traces in test fixtures.
OPA452FAKTWT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- TO-263-8, D2PAK (7 Leads + Tab), TO-263CA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 10V/µs
- Gain Bandwidth Product:
- 1.8 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 7 pA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 5.5mA
- Current - Output / Channel:
- 50 mA
- Voltage - Supply Span (Min):
- 20 V
- Voltage - Supply Span (Max):
- 80 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-263 (DDPAK-7)
OPA452FAKTWT FAQ
1.How can I place an order for OPA452FAKTWT through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA452FAKTWT 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 OPA452FAKTWT reliable?
The price and inventory of OPA452FAKTWT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA452FAKTWT is usually 5 days.
3.What payment methods are accepted for OPA452FAKTWT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA452FAKTWT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA452FAKTWT?
OPA452FAKTWT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA452FAKTWT 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 OPA452FAKTWT?
For technical support, including OPA452FAKTWT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA452FAKTWT requirements.
6.How does Aetrix verify that OPA452FAKTWT is sourced from the original manufacturer or authorized distributors?
All OPA452FAKTWT 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 OPA452FAKTWT meets industry standards.
7.What is the process for return or replacement of OPA452FAKTWT?
All OPA452FAKTWT units undergo pre-shipment inspection (PSI). If there is an issue with OPA452FAKTWT, 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 OPA452FAKTWT part is unused and in its original packaging.
Return procedure for OPA452FAKTWT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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