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Texas Instruments OPA452TA-1
- Part No.:
- OPA452TA-1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- TO-220-7 Formed Leads
- Datasheet:
-
OPA452TA-1.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT TO220-7
- Quantity:
- Payment:
- Shipping:
Inventory:3,617
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Product details
Overview
OPA452TA-1 from Texas Instruments is a high-voltage, high-current operational amplifier in a 7-lead TO-220 (TA-1) stagger-formed package with electrically connected tab tied to V–. It delivers ±50mA continuous output current, supports ±10V to ±40V supply rails (80V total), and provides rail-to-rail output swing within 4V of rails at full load. It is unity-gain stable with 1.8MHz gain-bandwidth product and integrated thermal shutdown and output current limiting-used in piezoelectric drivers and servo amplifiers requiring robust high-power analog signal conditioning.
For engineers reviewing the OPA452TA-1 datasheet, OPA452TA-1 pinout, OPA452TA-1 application, or OPA452TA-1 equivalent, this page delivers verified electrical specifications, validated TO-220-7 stagger-formed pin mapping, confirmed thermal flag behavior, and real-world design context for transducer and test-equipment implementations.
Technical Context
The OPA452TA-1 implements a fully protected monolithic bipolar input stage with laser-trimmed offset voltage (±3mV max at +25°C) and operates across –40°C to +125°C junction temperature. Its internal current-limiting circuit restricts output to ~125mA short-circuit current while maintaining 50mA continuous drive capability under thermal regulation.
Thermal shutdown activates at +160°C junction temperature and resets at +145°C, with status reported via the Flag pin (0.1–1.0µA normal, 100–165µA during shutdown). The device is specified over the full ±10V to ±40V supply range, with guaranteed performance including open-loop gain ≥105dB and CMRR ≥86dB at ±40V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | ±10V to ±40V (80V total); enables operation in unbalanced supplies (e.g., +70V/–10V) without performance degradation. |
| Output Current | ±50mA continuous; sufficient to drive 600Ω loads at ±30V swing, supporting high-power transducer excitation. |
| Gain-Bandwidth Product | 1.8MHz at ±40V; ensures stable unity-gain operation with predictable small-signal bandwidth in precision servo loops. |
| Slew Rate | +7.2 / –10 V/µs; supports fast settling (2µs to 0.1%) for 10V step, critical in audio and test-equipment pulse response. |
| Input Offset Voltage | ±3mV max at +25°C; low drift (±5µV/°C) maintains accuracy across industrial temperature range. |
| Thermal Shutdown Threshold | +160°C junction activation; protects against sustained overload while allowing recovery at +145°C. |
| Flag Pin Output Current | 0.1–1.0µA (normal), 100–165µA (shutdown); directly interfaces with CMOS/HCT logic for system-level fault monitoring. |
Pinout & Package
The OPA452TA-1 uses a 7-lead TO-220 (TA-1) stagger-formed package with electrically connected metal tab tied to V–. Mounting the tab to a copper pour improves thermal resistance (θJC = 3°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NC) | No-connect terminal | Internally unused; must remain unconnected to avoid parasitic coupling or latch-up risk. |
| 2 (V–) | Negative supply rail | Primary return path for bias and output current; tab is electrically bonded to this pin. |
| 3 (VO) | Amplifier output | Capable of ±50mA continuous drive into resistive or capacitive loads; requires external bypassing per layout guidelines. |
| 4 (V+) | Positive supply rail | Accepts up to +40V; must be decoupled with ≥0.1µF capacitor near pin to suppress supply noise. |
| 5 (VIN–) | Inverting input | Differential input node with 10¹³Ω || 6pF common-mode impedance; clamped to rails with diodes (max ±0.5V overvoltage). |
| 6 (VIN+) | Non-inverting input | High-impedance input with ±100pA bias current; used for reference sensing or feedback configuration. |
| 7 (Flag) | Thermal shutdown indicator | Open-collector current source; sinks 100–165µA when junction exceeds +160°C-enables fault detection without additional sensors. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers (V–)+4.0V to (V+)–4.0V at ±50mA load-enables maximum dynamic range in ±40V systems without clipping. |
| Fully integrated protection | Combines thermal shutdown, output current limiting, and input clamp diodes-eliminates need for external protection circuitry in harsh environments. |
| Wide supply range operation | Guaranteed specs across ±10V to ±40V; supports flexible power architectures including asymmetric supplies for specialized actuator control. |
| Laser-trimmed precision | ±3mV input offset voltage with ±5µV/°C drift-reduces calibration overhead in closed-loop servo and instrumentation applications. |
| Unity-gain stability | Stable at G = 1 without external compensation-simplifies design of non-inverting buffers and voltage followers in high-current paths. |
Applications
| Piezoelectric Cell Driver | Test Equipment Amplifier |
|---|---|
Use Scenario: Driving high-capacitance piezoelectric actuators in precision positioning stages requiring fast, high-voltage excitation pulses. IC Role / Device Role / Timing Role: High-current voltage buffer delivering ±30V at 10kHz with minimal phase shift and no oscillation. Use Value: 1.8MHz GBW and +7.2V/µs slew rate enable sub-microsecond step response; thermal flag prevents damage during mechanical stall conditions. | Use Scenario: Output stage of automated test equipment (ATE) sourcing calibrated DC and AC signals up to ±35V into 600Ω loads. IC Role / Device Role / Timing Role: Precision power op amp providing programmable voltage/current outputs with built-in fault reporting. Use Value: ±50mA drive and ±3mV offset ensure accurate sourcing; Flag pin integration simplifies system-level thermal monitoring without added components. |
| Audio Power Amplifier | Servo Motor Driver |
Use Scenario: Low-distortion headphone or line-driver stage in professional audio gear requiring wide bandwidth and low THD+N (0.0008% @ 1kHz). IC Role / Device Role / Timing Role: Unity-gain stable output buffer delivering clean 30Vp-p signals into reactive loads. Use Value: 21nV/√Hz input voltage noise and 9fA/√Hz current noise preserve signal integrity; rail-swing capability maximizes headroom. | Use Scenario: Analog torque/current loop amplifier in industrial servo drives controlling brushless motors with ±24V supply rails. IC Role / Device Role / Timing Role: High-fidelity error amplifier converting DAC output to motor-phase current command. Use Value: 105dB open-loop gain ensures <0.01% linearity error; thermal shutdown prevents coil burnout during jam conditions. |
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 |
|---|---|---|---|
| OPA452TA | Same die, identical electrical specs, but packaged in standard straight-formed TO-220 (KC drawing) instead of stagger-formed TA-1 (KVT). | Requires different PCB footprint and heatsink alignment; no functional difference in circuit performance. | Select OPA452TA if board layout uses conventional TO-220 mounting or existing tooling supports KC package. |
| OPA453TA-1 | Same package (KVT), but optimized for G ≥ 5 (7.5MHz GBW, +23/–38V/µs slew); not unity-gain stable without external compensation. | Better suited for fixed-gain instrumentation or high-speed signal chains where gain >5 is required. | Choose OPA453TA-1 only when gain ≥5 is guaranteed and higher bandwidth/slew rate justify loss of unity-gain simplicity. |
Compared with OPA452TA-1, OPA452TA offers identical performance in a mechanically distinct TO-220 variant, while OPA453TA-1 trades unity-gain stability for higher speed-making OPA452TA-1 the optimal choice for general-purpose high-current, unity-gain, or variable-gain analog output stages.
Availability
OPA452TA-1 is available at Aetrix Electronics and suitable for piezoelectric cell drivers, test equipment amplifiers, and servo motor drivers requiring stable component supply with guaranteed long-term industrial availability.
Supply support for OPA452TA-1 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 op amps and high-reliability power solutions.
The OPA452 belongs to TI's high-voltage power op amp family designed specifically for demanding industrial applications-including transducer excitation, test instrumentation, and motion control-where robustness, wide supply range, and integrated protection are essential.
FAQ
What is the maximum continuous output current of the OPA452TA-1?
The OPA452TA-1 delivers ±50mA continuous output current into resistive loads at full rated supply voltage (±40V). Short-circuit current is ±125mA, but sustained operation at that level triggers thermal shutdown. Derating is required above +85°C ambient due to reduced thermal margin-consult SOA curves in the datasheet for safe operating boundaries at elevated temperatures. The OPA452TA-1 maintains this rating across its full –40°C to +125°C junction temperature range.
How does the Flag pin on the OPA452TA-1 function during thermal shutdown?
The Flag pin on the OPA452TA-1 is an open-collector current source that outputs 0.1–1.0µA during normal operation and increases to 100–165µA when junction temperature reaches +160°C, indicating thermal shutdown activation. This current can be converted to a logic-level signal using a simple pull-up resistor (e.g., 39kΩ to +5V for HCT logic). The OPA452TA-1 resumes normal operation automatically once junction temperature falls to +145°C, and Flag current returns to baseline-enabling real-time system health monitoring without external sensors.
Can the OPA452TA-1 operate from an asymmetric power supply, such as +70V and –10V?
Yes, the OPA452TA-1 supports asymmetric supplies with total voltage up to 80V (e.g., +70V/–10V). Its specifications-including input common-mode range, output swing, and quiescent current-are guaranteed across ±10V to ±40V, and it functions reliably with unequal rails as long as the differential supply remains within absolute maximum ratings. However, output swing becomes asymmetrical: VO will swing to (V–)+4V and (V+)–4V, so in a +70V/–10V setup, usable range is –6V to +66V. Thermal design must account for increased dissipation on the more heavily loaded output transistor.
What is the purpose of the NC (pin 1) on the OPA452TA-1, and should it be connected?
Pin 1 of the OPA452TA-1 is designated NC (No Connect) and is internally unconnected. It must remain floating-neither tied to ground nor to any supply rail-as connection could introduce parasitic coupling, degrade PSRR, or cause unpredictable latch-up behavior. The OPA452TA-1 datasheet explicitly states this terminal has no internal function. PCB layout should isolate this pad from traces and pours; solder mask coverage is recommended to prevent accidental bridging during assembly.
Is the OPA452TA-1 unity-gain stable, and how does it compare to the OPA453TA-1 in this regard?
Yes, the OPA452TA-1 is unity-gain stable and requires no external compensation for G = 1 configurations. In contrast, the OPA453TA-1 is optimized for gains ≥5 and becomes unstable at unity gain unless externally compensated (e.g., using the CS/CF network described in TI Application Report SBOA015). This makes the OPA452TA-1 the preferred choice for voltage followers, non-inverting buffers, and variable-gain stages where low-gain operation is needed-while the OPA453TA-1 suits fixed high-gain, high-bandwidth signal chains where stability margins allow tighter compensation.
OPA452TA-1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- TO-220-7 Formed Leads
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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:
- Through Hole
- Supplier Device Package:
- TO-220-7
OPA452TA-1 FAQ
1.How can I place an order for OPA452TA-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA452TA-1 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 OPA452TA-1 reliable?
The price and inventory of OPA452TA-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA452TA-1 is usually 5 days.
3.What payment methods are accepted for OPA452TA-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA452TA-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA452TA-1?
OPA452TA-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA452TA-1 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 OPA452TA-1?
For technical support, including OPA452TA-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA452TA-1 requirements.
6.How does Aetrix verify that OPA452TA-1 is sourced from the original manufacturer or authorized distributors?
All OPA452TA-1 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 OPA452TA-1 meets industry standards.
7.What is the process for return or replacement of OPA452TA-1?
All OPA452TA-1 units undergo pre-shipment inspection (PSI). If there is an issue with OPA452TA-1, 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 OPA452TA-1 part is unused and in its original packaging.
Return procedure for OPA452TA-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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