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Texas Instruments OPA453TA-1
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- Part No.:
- OPA453TA-1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- TO-220-7 Formed Leads
- Datasheet:
-
OPA453TA-1.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT TO220-7
- Quantity:
- Payment:
- Shipping:
Inventory:131
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Product details
Overview
OPA453TA-1 from Texas Instruments is a high-voltage, high-current operational amplifier optimized for non-inverting or inverting configurations with gain ≥5. It delivers ±50mA continuous output current, supports ±10V to ±40V (80V total) supply range, and achieves 7.5MHz gain-bandwidth product with +23/–38 V/µs slew rate. It is used in piezoelectric drivers requiring rail-to-rail-capable output swing and thermal fault monitoring.
For engineers reviewing the OPA453TA-1 datasheet, OPA453TA-1 pinout, OPA453TA-1 application, or OPA453TA-1 equivalent, this page provides verified package mapping (TO-220-7, tab connected to V–), confirmed thermal shutdown flag behavior (100–165µA active-high indicator), exact gain-stability boundary (G ≥ 5), and validated safe operating area limits per TI SBOS127C.
Technical Context
The OPA453TA-1 uses a fully differential input stage with laser-trimmed offset voltage (±1mV typ at +25°C) and features internal current limiting (±125mA short-circuit current) plus thermal shutdown activation at +160°C junction temperature. Its architecture avoids phase inversion and supports operation across the full ±10V to ±40V supply range without parameter derating.
Unlike the unity-gain-stable OPA452, the OPA453TA-1 employs frequency compensation optimized for closed-loop gains ≥5 - enabling 7.5MHz bandwidth and superior small-signal settling (1µs to 0.1% at G = +5) while maintaining low THD+N (0.0008% at 1kHz, 30Vp-p). The Flag pin provides direct thermal status feedback via current-level signaling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | ±10V to ±40V (80V total); enables single-supply asymmetric use (e.g., +70V/–10V) without performance loss. |
| Gain-Bandwidth Product | 7.5MHz at ±40V; supports stable amplification up to G = 5 with predictable bandwidth (1.5MHz) and fast settling. |
| Slew Rate | +23/–38 V/µs; ensures distortion-free reproduction of fast transients in servo and audio driver applications. |
| Output Current | ±50mA continuous; drives low-impedance loads (e.g., 600Ω transducers) without external boost circuitry. |
| Input Offset Voltage | ±1mV typical (±3mV max) at +25°C; maintains precision in low-level signal conditioning paths. |
| Thermal Shutdown Threshold | +160°C junction temperature; disables output until junction cools to +145°C, protecting against sustained overload. |
| Flag Pin Output | 0.1–1.0µA (normal), 100–165µA (shutdown); allows direct CMOS/HCT logic interfacing without level-shifting. |
Pinout & Package
OPA453TA-1 uses a 7-lead TO-220 (KVT drawing) package with electrically connected metal tab tied to V–. The tab must not carry current but requires direct soldering to PCB copper for thermal management (θJC = 3°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | NC | No internal connection; leave unconnected or grounded per layout best practice. |
| 2 | V– | Negative supply rail; tab is internally bonded to this pin - critical for heatsinking and ground reference integrity. |
| 3 | VO | Amplifier output; capable of ±50mA drive into resistive or capacitive loads up to 10nF with stability compensation. |
| 4 | V+ | Positive supply rail; supports up to +40V; bypass with ≥0.1µF ceramic capacitor near pin. |
| 5 | VIN– | Inverting input; high-impedance (1013 Ω || 6 pF), diode-clamped to rails; limit input current to ≤5mA. |
| 6 | VIN+ | Non-inverting input; identical clamping and impedance as VIN–; used for reference or signal injection. |
| 7 | Flag | Open-collector thermal status indicator; sinks 100–165µA during shutdown - interface directly to logic inputs. |
Key Features
| Feature | Design Value |
|---|---|
| High-Voltage Operation | Rated for ±40V supplies (80V total), enabling direct interface with industrial HV buses and piezo actuators. |
| Robust Output Protection | Integrated current limiting (±125mA) and thermal shutdown prevent damage during transient overloads or short circuits. |
| Rail-Compatible Output Swing | Delivers (V–)+4.0V to (V+)-4.0V at ±50mA load - sufficient for 30Vp-p signals into 2kΩ with <0.0008% THD+N. |
| Stable High-Gain Performance | Optimized for G ≥ 5; achieves 7.5MHz GBW and 1µs 0.1% settling without external compensation. |
| Wide Temperature Range | Specified from –40°C to +125°C junction temperature - suitable for under-hood automotive and industrial control environments. |
Applications
| Piezoelectric Actuator Driver | High-Voltage Test Equipment |
|---|---|
Use Scenario: Driving stacked piezoceramic elements requiring ±30V, 20kHz waveforms with minimal distortion. IC Role / Device Role / Timing Role: High-current, high-slew op amp configured as non-inverting amplifier with G = 10 to deliver precise voltage-controlled displacement. Use Value: Delivers 30Vp-p at 1kHz with 0.0008% THD+N and sustains ±50mA into capacitive loads up to 10nF using internal protection. | Use Scenario: Generating calibrated high-voltage test signals (±35V) for semiconductor parametric testing fixtures. IC Role / Device Role / Timing Role: Precision output stage in programmable DC source, referenced to system ground with rail-to-rail swing capability. Use Value: Maintains ±1mV offset accuracy over –40°C to +125°C and supports ±40V supplies - eliminating need for external level-shifting or boosting stages. |
| Audio Power Amplifier Stage | Servo Motor Driver Interface |
Use Scenario: Final gain stage in Class-AB headphone amplifier delivering 100mW into 32Ω loads. IC Role / Device Role / Timing Role: Low-noise (21nV/√Hz), high-slew op amp in inverting configuration with G = 5 to drive low-Z headphones. Use Value: Achieves 7.5MHz bandwidth and +23V/µs slew rate - preserving transient fidelity while delivering ±50mA peak current. | Use Scenario: Position error amplifier in closed-loop hydraulic servo valve controller operating at ±24V rails. IC Role / Device Role / Timing Role: High-reliability error amplifier with thermal flag monitoring to detect coil overtemperature before mechanical failure. Use Value: Flag pin outputs 140µA (typ) during thermal shutdown - enabling immediate system-level fault logging and safe actuator deactivation. |
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 | Unity-gain stable; 1.8MHz GBW; +7.2/–10 V/µs slew rate; lower bandwidth but broader gain flexibility. | Suitable for G = 1 to 10; preferred where variable gain or unity-gain buffer functionality is required. | Select OPA452TA when design requires stable operation at G = 1 or wide gain adjustment range - not for fixed high-speed G ≥ 5 paths. |
| OPA547T | Higher output current (±500mA); integrated enable/disable; programmable current limit; larger TO-220-11 package. | Used in high-power motor drivers and lab-grade power supplies where >50mA is mandatory. | Choose OPA547T only if output current >50mA is essential - OPA453TA-1 offers better noise, THD, and smaller footprint for 50mA-class loads. |
Compared with OPA452TA, OPA453TA-1 trades unity-gain stability for 4.2× higher bandwidth and 3.2× faster slew rate - making it optimal for fixed high-gain, high-fidelity signal chains. Against OPA547T, it sacrifices current headroom for lower noise (21nV/√Hz vs 40nV/√Hz), tighter offset (±1mV vs ±3mV), and simpler thermal management.
Availability
OPA453TA-1 is available at Aetrix Electronics and suitable for piezoelectric actuator drivers, high-voltage test equipment, and servo motor interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for OPA453TA-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 amplifiers and high-reliability power management ICs.
The OPA453 belongs to TI's high-voltage operational amplifier product line, designed specifically for industrial actuation, test instrumentation, and energy-efficient servo control systems demanding robust thermal protection and rail-compatible output swing.
FAQ
What is the minimum recommended closed-loop gain for stable operation of the OPA453TA-1?
The OPA453TA-1 is optimized for closed-loop gains of 5 or greater. At gains below 5, phase margin decreases significantly - risking oscillation unless external compensation (e.g., noise-gain shaping with CS/CF network) is applied. This differs from the unity-gain-stable OPA452TA and is explicitly documented in TI SBOS127C Section "Using the OPA453 in Low Gains". Always verify stability with actual load and layout using small-signal step response testing.
How is the Flag pin on the OPA453TA-1 used for thermal monitoring?
The Flag pin on the OPA453TA-1 is an open-collector output that sinks 0.1–1.0µA during normal operation and 100–165µA when thermal shutdown activates at +160°C junction temperature. It interfaces directly with CMOS or HCT logic using a pull-up resistor (e.g., 39kΩ to +5V). This enables real-time fault detection without additional sensing circuitry - a key feature for safety-critical servo and test equipment designs using the OPA453TA-1.
Does the metal tab on the OPA453TA-1 package carry electrical current?
No - the metal tab on the OPA453TA-1 (TO-220 KVT package) is electrically connected to the V– pin but must not be used to conduct supply current. Its sole purpose is thermal conduction: it must be soldered directly to a large PCB copper pour to achieve the specified θJC = 3°C/W. Routing V– current through the tab introduces voltage drop, noise coupling, and reliability risk. Always route V– via dedicated PCB traces separate from the tab connection.
Can the OPA453TA-1 drive capacitive loads without external compensation?
The OPA453TA-1 can drive ≤100pF capacitive loads stably at G ≥ 5 without added components. For larger loads (e.g., 1nF–10nF), external compensation is required - typically a series resistor (RF) and feedback capacitor (CF) in conjunction with a feedforward capacitor (CS), as shown in TI Application Report SBOA015. Uncompensated driving of >100pF loads causes peaking, overshoot, or oscillation due to reduced phase margin - a limitation confirmed in the "Capacitive Loads" section of the OPA453TA-1 datasheet SBOS127C.
What is the maximum continuous output current specification for the OPA453TA-1?
The OPA453TA-1 delivers ±50mA continuous output current into resistive loads while maintaining specified performance (e.g., output swing, THD+N, gain accuracy). Its internal current limit activates at ±125mA (short-circuit level), but sustained operation above ±50mA risks thermal shutdown unless heatsinking and ambient conditions are rigorously controlled. The 50mA rating is validated across –40°C to +125°C junction temperature and forms the basis for safe operating area (SOA) derating curves in TI SBOS127C Figure 3.
OPA453TA-1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- TO-220-7 Formed Leads
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 38V/µs
- Gain Bandwidth Product:
- 7.5 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
OPA453TA-1 FAQ
1.How can I place an order for OPA453TA-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA453TA-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 OPA453TA-1 reliable?
The price and inventory of OPA453TA-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA453TA-1 is usually 5 days.
3.What payment methods are accepted for OPA453TA-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA453TA-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA453TA-1?
OPA453TA-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA453TA-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 OPA453TA-1?
For technical support, including OPA453TA-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA453TA-1 requirements.
6.How does Aetrix verify that OPA453TA-1 is sourced from the original manufacturer or authorized distributors?
All OPA453TA-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 OPA453TA-1 meets industry standards.
7.What is the process for return or replacement of OPA453TA-1?
All OPA453TA-1 units undergo pre-shipment inspection (PSI). If there is an issue with OPA453TA-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 OPA453TA-1 part is unused and in its original packaging.
Return procedure for OPA453TA-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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