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Texas Instruments OPA454AIDDARG4
- Part No.:
- OPA454AIDDARG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-PowerSOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA454AIDDARG4.pdf
- Description:
- IC OPAMP GP 1 CIRC 8SOPWRPAD
- Quantity:
- Payment:
- Shipping:
Inventory:2,053
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Product details
Overview
OPA454AIDDARG4 from Texas Instruments is a high-voltage (±50 V), high-current (±50 mA) unity-gain-stable operational amplifier in an 8-pin SO PowerPAD™ package. It delivers rail-to-rail output swing within 1 V, features independent output disable via open-drain status flag and dedicated enable/disable pins, and operates across –40°C to +85°C for avalanche photodiode current sensing and piezoelectric transducer driving.
For engineers reviewing the OPA454AIDDARG4 datasheet, OPA454AIDDARG4 pinout, OPA454AIDDARG4 application, or OPA454AIDDARG4 equivalent, this page provides verified specifications including ±50-V supply range, 2.5-MHz GBW, 13-V/µs slew rate, 0.0008% THD+N at 1 kHz, and thermal shutdown with status flag reporting - all critical for high-voltage precision analog design.
Technical Context
The OPA454AIDDARG4 uses a robust bipolar input stage with internal overtemperature and overcurrent protection. Its open-drain status flag references E/D Com and asserts low during fault conditions, while the separate E/D and E/D Com pins allow clean low-voltage logic interfacing without disturbing the input path.
It achieves unity-gain stability with up to 200-pF capacitive load drive and maintains ≥80 dB open-loop gain at ±25-mA output into 1.88-kΩ. The exposed PowerPAD™ thermal pad (internally connected to V–) enables effective heatsinking across the full industrial temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | ±5 V to ±50 V (10 V to 100 V); supports single- or dual-supply high-voltage systems without level-shifting. |
| Output Current | ±50 mA continuous; sufficient to drive piezoelectric loads, servo coils, and high-voltage current sources directly. |
| Gain-Bandwidth Product | 2.5 MHz; enables stable closed-loop operation at G = 1 with bandwidth adequate for fast transducer control loops. |
| Slew Rate | 13 V/µs; ensures faithful reproduction of 80-V step signals with ≤3 µs settling to ±0.1%. |
| THD+N | 0.0008% at 1 kHz, 77.2-VPP output; meets audio-grade and precision measurement linearity requirements. |
| Status Flag | Open-drain, active-low output referenced to E/D Com; reports overcurrent (15 µs delay) or overtemperature (>150°C). |
| Quiescent Current | 3.2–4 mA active; drops to 150–210 µA in shutdown - critical for power-constrained HV bias supplies. |
Pinout & Package
OPA454AIDDARG4 is housed in an 8-pin SOIC PowerPAD™ (DDA) package (4.89 mm × 3.90 mm) with an exposed metal thermal pad on the bottom side, internally connected to V–. Soldering the PowerPAD™ to PCB copper is mandatory for thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| E/D (Pin 8) | Enable/Disable control 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. |
| E/D Com (Pin 1) | Enable/Disable common reference | Logic ground reference for E/D and Status Flag; accepts –5 V to (V+) – 5 V. |
| –IN (Pin 2) | Inverting input | Differential input node with 1013 Ω||9 pF impedance; supports wide common-mode range (V– + 2.5 V to V+ – 2.5 V). |
| +IN (Pin 3) | Noninverting input | Differential input node with identical impedance and CMR as –IN; enables precision instrumentation configurations. |
| OUT (Pin 6) | Amplifier output | Capable of ±50 mA into resistive loads; swings to within 1 V of rails at light load, 2–3 V at full load. |
| Status Flag (Pin 5) | Fault indicator output | Open-drain output pulled low during overcurrent or junction temperature >150°C; recovers at 130°C. |
| V– (Pin 4) | Negative supply rail | Internally connected to PowerPAD™ thermal pad; must be tied to lowest system potential and heatsinked. |
| V+ (Pin 7) | Positive supply rail | Accepts up to +50 V; combined with V– defines 100-V total supply range for high-compliance applications. |
Key Features
| Feature | Design Value |
|---|---|
| Independent output disable | Enables safe load isolation without disrupting input bias or signal path - essential for multiplexed HV sensor arrays. |
| Rail-to-rail output swing | Delivers (V–) + 1 V to (V+) – 1 V at 1-mA load, maximizing dynamic range in ±50-V systems like piezo drivers. |
| Thermal and current protection | Integrated shutdown triggers at 150°C junction temp or ±120/–150 mA peak current, with status flag for system-level fault handling. |
| Unity-gain stability | Stable with gains ≥1 and up to 200-pF capacitive loads - eliminates need for external compensation in transducer interfaces. |
| Low input bias current | ±1.4 pA typical at 25°C; preserves accuracy in high-impedance photodiode and electrometer front-ends. |
| Exposed PowerPAD™ thermal pad | Reduces RθJC(bot) to 2.5°C/W; allows direct PCB heatsinking for sustained 50-mA output in industrial environments. |
Applications
| Avalanche Photodiode Current Sense | Piezoelectric Transducer Driver |
|---|---|
Use Scenario: High-voltage bias and low-noise current amplification for APD-based LIDAR or radiation detection. IC Role / Device Role / Timing Role: Precision transimpedance amplifier with 100-V compliance and sub-pA input bias. Use Value: Enables >10⁶ A/W gain with <0.001% THD+N and thermal fault reporting to prevent APD damage. |
Use Scenario: Driving high-capacitance piezoceramic actuators in nanopositioning stages or ultrasonic cleaners. IC Role / Device Role / Timing Role: High-slew-rate voltage driver delivering ±50 mA into >10 nF loads. Use Value: Achieves 13 V/µs slew with 2.5-MHz bandwidth, enabling precise waveform generation up to 35 kHz full-power. |
| Servo Motor Driver | High-Voltage Compliance Current Source |
Use Scenario: Closed-loop torque/current control for industrial DC servos requiring >60-V bus compliance. IC Role / Device Role / Timing Role: Output stage amplifier with integrated current limiting and thermal monitoring. Use Value: Provides ±50 mA drive with real-time overcurrent flagging - avoids external sense resistors and discrete protection. |
Use Scenario: Stable, programmable current source for semiconductor test equipment or electrochemical cells. IC Role / Device Role / Timing Role: Precision current regulator using feedback-controlled high-voltage output. Use Value: Delivers 0–50 mA with <±4 mV offset drift and 0.0008% THD+N - critical for metrology-grade sourcing. |
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 |
|---|---|---|---|
| OPA445 | Pin-compatible but lacks status flag; max supply ±40 V; lower output current (±15 mA). | Suitable for non-fault-critical HV amplification where thermal monitoring is handled externally. | Select OPA445 only when status flag and >±40 mA drive are unnecessary - reduces BOM cost without layout change. |
| OPA452 | Same 80-V max supply and ±50-mA drive, but no enable/disable or status flag; wider input voltage range. | Better for high-CMRR instrumentation where disable functionality is not required. | Choose OPA452 for pure signal integrity in HV differential measurement - trades fault safety for higher CMRR (147 dB). |
Compared with OPA454AIDDARG4, the OPA445 offers lower cost and same pinout but omits fault reporting and current capability, while the OPA452 provides superior CMRR and input range but lacks integrated disable and thermal flag - making OPA454AIDDARG4 the only choice for protected, controllable HV output stages.
Availability
OPA454AIDDARG4 is available at Aetrix Electronics and suitable for test equipment, avalanche photodiode current sensing, and piezoelectric transducer driving requiring stable component supply across extended temperature and high-voltage operating conditions.
Supply support for OPA454AIDDARG4 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 high-reliability precision amplifiers.
The OPA454AIDDARG4 belongs to TI's high-voltage op-amp product line, engineered specifically for industrial test, transducer interface, and HV power control applications demanding robust protection, wide supply range, and accurate output drive.
FAQ
What is the maximum supply voltage rating for the OPA454AIDDARG4?
The OPA454AIDDARG4 supports a total supply voltage range of ±5 V to ±50 V (10 V to 100 V), with absolute maximum ratings up to ±60 V. Its recommended operating range is explicitly specified as ±50 V, and it maintains full performance-including ±50 mA output drive and 2.5-MHz GBW-within this range. Exceeding ±50 V may trigger internal protection or reduce reliability.
Does the OPA454AIDDARG4 require external compensation for unity-gain stability?
No, the OPA454AIDDARG4 is internally compensated for unity-gain stability and remains stable with closed-loop gains ≥1. It drives up to 200 pF capacitive loads without oscillation, eliminating the need for external compensation networks in standard configurations such as transimpedance or voltage-follower circuits.
How does the Status Flag pin function on the OPA454AIDDARG4?
The Status Flag (Pin 5) is an open-drain, active-low output referenced to E/D Com. It pulls low during overcurrent (≥+120/–150 mA) or overtemperature (>150°C junction) events, with 15-µs fault detection delay and 10-µs recovery after cooling to 130°C. This enables direct interfacing with 3.3-V or 5-V logic for system-level fault response.
Can the OPA454AIDDARG4 drive heavy capacitive loads like piezoelectric elements?
Yes - the OPA454AIDDARG4 is characterized for stable operation with up to 200 pF capacitive load and delivers ±50 mA into resistive loads. When driving piezoelectric transducers (typically 10–100 nF), its 13-V/µs slew rate and 2.5-MHz GBW ensure accurate waveform reproduction up to ~35 kHz full-power bandwidth, provided proper PCB layout and thermal management are applied.
What thermal considerations apply to the OPA454AIDDARG4's PowerPAD™ package?
The OPA454AIDDARG4's SO PowerPAD™ (DDA) package requires soldering the exposed thermal pad (internally tied to V–) to a large PCB copper area. With RθJC(bot) = 2.5°C/W, effective heatsinking keeps junction temperature below 150°C even at 50-mA continuous output. TI specifies RθJA = 40.6°C/W for a 1-in² 1-oz copper heatspreader - underscoring the necessity of thermal pad attachment.
OPA454AIDDARG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-PowerSOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- -
- 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
OPA454AIDDARG4 FAQ
1.How can I place an order for OPA454AIDDARG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA454AIDDARG4 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 OPA454AIDDARG4 reliable?
The price and inventory of OPA454AIDDARG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA454AIDDARG4 is usually 5 days.
3.What payment methods are accepted for OPA454AIDDARG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA454AIDDARG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA454AIDDARG4?
OPA454AIDDARG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA454AIDDARG4 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 OPA454AIDDARG4?
For technical support, including OPA454AIDDARG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA454AIDDARG4 requirements.
6.How does Aetrix verify that OPA454AIDDARG4 is sourced from the original manufacturer or authorized distributors?
All OPA454AIDDARG4 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 OPA454AIDDARG4 meets industry standards.
7.What is the process for return or replacement of OPA454AIDDARG4?
All OPA454AIDDARG4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA454AIDDARG4, 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 OPA454AIDDARG4 part is unused and in its original packaging.
Return procedure for OPA454AIDDARG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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