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Texas Instruments OPA454AIDDA
- Part No.:
- OPA454AIDDA
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-PowerSOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA454AIDDA.pdf
- Description:
- IC OPAMP GP 1 CIRC 8SOPWRPAD
- Quantity:
- Payment:
- Shipping:
Inventory:2,418
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Product details
Overview
OPA454AIDDA from Texas Instruments is a high-voltage, high-current operational amplifier designed for precision output drive in ±5 V to ±50 V (100 V) supply systems. It delivers ±50 mA continuous output current, supports 1 V to rail output swing, features independent enable/disable control with open-drain status flag, and operates across –40°C to +85°C - used in avalanche photodiode current sensing and piezoelectric transducer drivers.
For engineers reviewing the OPA454AIDDA datasheet, OPA454AIDDA pinout, OPA454AIDDA application, or OPA454AIDDA equivalent, key selection criteria include its 2.5 MHz gain-bandwidth product, thermal/overcurrent protection behavior, SO PowerPAD™ package thermal performance, and independent shutdown functionality without input path disturbance.
Technical Context
The OPA454AIDDA integrates internal overtemperature and overcurrent protection with a status flag that asserts low on either fault condition. Its unity-gain stable architecture supports G = 1 configurations without external compensation, and the enable/disable circuitry uses separate E/D and E/D Com pins referenced to V–, enabling direct interface to low-voltage logic while maintaining high-voltage signal integrity.
Input stage design provides ultra-low bias current (±1.4 pA typ), high CMRR (146 dB at ±50 V), and rail-to-rail compatible common-mode range (V– + 2.5 V to V+ – 2.5 V). The exposed PowerPAD™ thermal pad is internally connected to V– and must be soldered to PCB for thermal management across the full industrial temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | ±5 V to ±50 V (100 V total); enables use in high-compliance power supplies and test equipment without intermediate regulation. |
| Output Current | ±50 mA continuous; sufficient to drive heavy capacitive loads or low-impedance transducers directly. |
| Gain-Bandwidth Product | 2.5 MHz; supports stable unity-gain operation with predictable settling (3 µs to ±0.1% for 20-V step). |
| Input Offset Voltage | ±0.2 mV (typ); ensures minimal DC error in precision high-voltage feedback loops. |
| Slew Rate | 13 V/µs; enables fast large-signal response in servo and audio amplifier stages. |
| Thermal Shutdown Threshold | Junction alarm at 150°C; status flag recovers at 130°C, providing hysteresis for reliable fault recovery. |
| Quiescent Current | 3.2–4 mA active; drops to 150–210 µA in shutdown mode, reducing system standby power. |
Pinout & Package
The OPA454AIDDA is housed in an 8-pin SO PowerPAD™ (DDA) package with a 4.89 mm × 3.90 mm body size. The exposed metal pad on the bottom is internally connected to V– and must be soldered to the PCB for effective thermal dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| E/D Com (Pin 1) | Enable/Disable Common Reference | Logic ground reference for E/D pin; accepts voltage range from V– to (V+ – 5 V); ties to V– in most implementations. |
| –IN (Pin 2) | Inverting Input | Differential input node with 10¹³ Ω||9 pF impedance; supports wide common-mode range up to V– + 2.5 V and V+ – 2.5 V. |
| +IN (Pin 3) | Noninverting Input | Differential input node with identical impedance and common-mode specifications as –IN. |
| V– (Pin 4) | Negative Supply Rail | Primary negative power connection; internally bonded to PowerPAD™ thermal pad. |
| Status Flag (Pin 5) | Open-Drain Fault Output | Active-low indicator for overtemperature or overcurrent; requires external pull-up to logic-compatible voltage (e.g., E/D Com or V+). |
| OUT (Pin 6) | Amplifier Output | Class-AB output stage capable of ±50 mA drive into 4.8 kΩ load with 1 V to rail swing. |
| V+ (Pin 7) | Positive Supply Rail | Primary positive power connection; supports up to +50 V relative to V–. |
| E/D (Pin 8) | Enable/Disable Control | Logic-level input: high (E/D Com + 2.5 V to +5 V) enables output; low (≤ E/D Com + 0.65 V) disables output in <4 µs. |
Key Features
| Feature | Design Value |
|---|---|
| Independent Output Disable | Shuts down output stage without disturbing input bias or signal path - preserves sensor interface integrity during idle periods. |
| Integrated Thermal Protection | Monitors junction temperature and asserts Status Flag at 150°C, with automatic recovery at 130°C - eliminates need for external thermal sensors. |
| High-Voltage Unity-Gain Stability | Stable at G = 1 with no external compensation required - simplifies layout and reduces BOM count in high-voltage buffer applications. |
| Ultra-Low Input Bias Current | 1.4 pA typical enables accurate high-impedance source interfacing (e.g., photodiodes, piezoelectrics) without significant leakage error. |
| Exposed PowerPAD™ Thermal Interface | Internally tied to V– and thermally optimized for PCB copper pour attachment - achieves RθJB = 20.7°C/W for sustained high-power operation. |
Applications
| Avalanche Photodiode Current Sense | Piezoelectric Transducer Driver |
|---|---|
Use Scenario: High-gain, low-noise transimpedance amplification of microamp-level photocurrents from APDs operating under reverse bias up to 100 V. IC Role / Device Role / Timing Role: Precision current-to-voltage converter with rail-to-rail output swing and thermal fault monitoring. Use Value: Enables stable, high-bandwidth APD biasing and signal extraction without external protection circuitry or gain-setting resistors requiring HV ratings. | Use Scenario: Driving high-capacitance piezoelectric actuators requiring fast voltage slewing and bipolar compliance up to ±50 V. IC Role / Device Role / Timing Role: High-slew-rate, high-current voltage amplifier with independent disable for safe actuator settling. Use Value: Delivers 13 V/µs slew rate and ±50 mA peak current to achieve sub-millisecond mechanical response while avoiding latch-up via status-flag monitored shutdown. |
| Servo Motor Driver Stage | High-Voltage Compliance Current Source |
Use Scenario: Closed-loop torque/current control in industrial servos where amplifier must deliver precise current into motor windings with >60 V compliance. IC Role / Device Role / Timing Role: High-voltage, high-current op-amp configured as precision current regulator with overcurrent flag for safety interlock. Use Value: Provides ±50 mA output drive with 1 V to rail swing and integrated current limiting - eliminates discrete current sense and protection ICs. | Use Scenario: Programmable current source for calibration standards, semiconductor test fixtures, or electrochemical cells requiring stable 0–50 mA output up to 100 V compliance. IC Role / Device Role / Timing Role: Precision current source amplifier with enable/disable control and thermal derating awareness. Use Value: Maintains <0.2 mV offset and ±1.6 µV/°C drift across –40°C to +85°C - ensures traceable current accuracy without recalibration in field-deployed equipment. |
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 |
|---|---|---|---|
| OPA445AIDDA | Pin-compatible but lacks E/D and Status Flag pins; offset trim capability present; lower 80-V max supply. | Not suitable for designs requiring independent output disable or thermal fault reporting; better for fixed-gain, cost-sensitive buffers. | Select OPA445AIDDA only when enable/disable and status monitoring are unnecessary and supply stays ≤±40 V. |
| OPA547TJ | Higher 60-V max supply, 750-mA output, TO-220 package; no enable/disable or status flag; higher quiescent current (12 mA). | Targeted at high-current, low-frequency power stages - not appropriate for precision, low-power, or logic-controlled applications. | Choose OPA547TJ only when ≥500 mA output is mandatory and thermal flag/control is handled externally. |
Compared with OPA445AIDDA and OPA547TJ, the OPA454AIDDA uniquely combines 100-V operation, ±50 mA drive, independent enable/disable, and integrated thermal/overcurrent flag in an SO PowerPAD™ package - making it the only choice for compact, self-protected, logic-controllable high-voltage amplification.
Availability
OPA454AIDDA is available at Aetrix Electronics and suitable for test equipment, avalanche photodiode current sensing, and piezoelectric transducer driver applications requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for OPA454AIDDA 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 delivering analog and embedded processing solutions with emphasis on reliability, precision, and industrial-grade performance.
The OPA454AIDDA belongs to TI's high-voltage precision op-amp product line, engineered specifically for applications demanding wide supply range, robust fault protection, and direct logic interface - including test instrumentation, scientific sensors, and industrial motion control.
FAQ
What is the maximum continuous output current specification for the OPA454AIDDA?
The OPA454AIDDA delivers ±50 mA continuous output current into resistive loads at ±50 V supply, with output voltage swing maintained within 1 V of each rail. Peak current capability reaches +120 mA / –150 mA before current limiting engages, and thermal foldback begins at junction temperatures above 150°C - verified per datasheet Figure 5 and Section 7.5.
Does the OPA454AIDDA require external compensation for unity-gain stability?
No, the OPA454AIDDA is unity-gain stable by design and does not require external compensation components. Its internal compensation ensures stable operation with closed-loop gains ≥1, including G = +1 noninverting and inverting configurations - confirmed in Section 9.3 and Figure 38 of the SBOS391B datasheet.
How is the Status Flag pin used in the OPA454AIDDA?
The Status Flag pin (Pin 5) is an open-drain, active-low output referenced to E/D Com. It pulls low during overtemperature (>150°C) or overcurrent events, with 6 µs enable-to-disable delay and 10 µs recovery time after fault removal. An external pull-up resistor (e.g., 10 kΩ to E/D Com) is required for proper logic-level signaling - detailed in Section 7.5 and Figure 47.
Can the OPA454AIDDA operate from a single supply?
Yes, the OPA454AIDDA supports single-supply operation from 10 V to 100 V (e.g., V+ = 100 V, V– = GND). Input common-mode range extends from (V–) + 2.5 V to (V+) – 2.5 V, and output swings within 1 V of each rail - enabling true single-supply use in high-side sensing or grounded-load configurations per Section 7.3 and Figure 10.
What thermal management requirements apply to the OPA454AIDDA's PowerPAD™?
The OPA454AIDDA's PowerPAD™ (exposed thermal pad) is internally connected to V– and must be soldered to a PCB copper pour for thermal conduction. With minimum recommended attach area, junction-to-board thermal resistance is 20.7°C/W - achieving reliable operation up to 125°C ambient requires ≥1 in² of 1 oz copper on inner layers per Section 12.5 and Figure 25.
OPA454AIDDA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-PowerSOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 13V/µs
- Gain Bandwidth Product:
- 2.5 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1.4 pA
- Voltage - Input Offset:
- 200 µV
- Current - Supply:
- 3.2mA
- Current - Output / Channel:
- 150 mA
- Voltage - Supply Span (Min):
- 10 V
- Voltage - Supply Span (Max):
- 100 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO PowerPad
OPA454AIDDA FAQ
1.How can I place an order for OPA454AIDDA through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA454AIDDA 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 OPA454AIDDA reliable?
The price and inventory of OPA454AIDDA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA454AIDDA is usually 5 days.
3.What payment methods are accepted for OPA454AIDDA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA454AIDDA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA454AIDDA?
OPA454AIDDA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA454AIDDA 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 OPA454AIDDA?
For technical support, including OPA454AIDDA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA454AIDDA requirements.
6.How does Aetrix verify that OPA454AIDDA is sourced from the original manufacturer or authorized distributors?
All OPA454AIDDA 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 OPA454AIDDA meets industry standards.
7.What is the process for return or replacement of OPA454AIDDA?
All OPA454AIDDA units undergo pre-shipment inspection (PSI). If there is an issue with OPA454AIDDA, 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 OPA454AIDDA part is unused and in its original packaging.
Return procedure for OPA454AIDDA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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