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Texas Instruments OPA547FKTWTG3
- Part No.:
- OPA547FKTWTG3
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- TO-263-8, D2PAK (7 Leads + Tab), TO-263CA
- Datasheet:
-
OPA547FKTWTG3.pdf
- Description:
- IC OPAMP GP 1 CIRC DDPAK/TO263-7
- Quantity:
- Payment:
- Shipping:
Inventory:1,022
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Product details
Overview
OPA547FKTWTG3 from Texas Instruments is a high-voltage, high-current operational amplifier designed for precision power amplification in demanding load-driving applications. It delivers ±500mA continuous output current, supports ±4V to ±30V dual supplies (or +8V to +60V single supply), and features user-adjustable current limiting from 0mA to ±750mA via the ILIM pin. It is used in valve/actuator drivers, servo systems, and programmable power supplies where robust thermal protection and output disable capability are required.
For engineers reviewing the OPA547FKTWTG3 datasheet, OPA547FKTWTG3 pinout, OPA547FKTWTG3 application, or OPA547FKTWTG3 equivalent, key selection considerations include its 6V/µs slew rate, ±1mV typical input offset voltage, thermal shutdown indicator on the E/S pin, adjustable current limit architecture, and compatibility with TO-220 (KVT) package mounting and heat sinking.
Technical Context
The OPA547FKTWTG3 implements a laser-trimmed monolithic op-amp architecture with internal thermal shutdown and an indirect current-sensing circuit that enables precise, resistor- or DAC-controlled current limiting without series power resistors in the output path. Its input common-mode range extends below ground in single-supply operation, supporting rail-to-rail-compatible signal conditioning.
It integrates an Enable/Status (E/S) pin that serves dual functions: pulling it low disables the output stage (reducing quiescent current to ~4mA) and monitoring its voltage level indicates thermal shutdown status (output drops from ~3.5V to ~0.35V above V– when junction temperature exceeds ~160°C). The device is specified for –40°C to +85°C operation and uses copper-tab TO-220 packaging for direct heatsink attachment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | ±4V to ±30V dual or +8V to +60V single - enables flexible system-level power architecture and wide dynamic headroom. |
| Continuous Output Current | ±500mA - sufficient to drive heavy resistive, inductive, or capacitive loads such as solenoids, motors, and transducers without external boost stages. |
| Slew Rate | 6V/µs - supports fast transient response in closed-loop power control and audio-amplifier applications up to ~10kHz full-power bandwidth. |
| Input Offset Voltage | ±1mV (typ) - ensures accurate DC gain stability and low-error signal amplification in precision voltage-source or current-source configurations. |
| Current Limit Range | 0mA to ±750mA - set via external resistor or DAC on ILIM pin, enabling programmable overcurrent protection without sacrificing output voltage swing. |
| Thermal Shutdown Threshold | Junction temperature ~160°C - protects die integrity during overload; automatic reset at ~140°C, with E/S pin providing real-time status feedback. |
| Quiescent Current | ±10mA (active), ±4mA (shutdown) - reduces system power consumption during idle or multiplexed multi-channel operation. |
Pinout & Package
The OPA547FKTWTG3 is housed in a 7-lead TO-220 (KVT) package with electrically connected copper tab (tied to V–), optimized for mechanical mounting to heatsinks and PCB copper planes. Thermal resistance θJC is 2°C/W (pulsed) and 3°C/W (dc); θJA is 65°C/W without heatsink.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - ILIM | Current limit control input | Accepts 0–150µA current to set output current limit from 0 to ±750mA; open = 0mA, shorted to V– = ~750mA. |
| 2 - V– | Negative supply terminal | Reference for all negative-side circuitry; tab is internally connected to this pin - must be isolated from other grounds unless intended. |
| 3 - VO | Output terminal | High-current output node capable of ±500mA continuous; requires external clamp diodes for reactive/EMF-generating loads. |
| 4 - V+ | Positive supply terminal | Supports up to +60V; bypassing with 0.1µF ceramic + 10µF tantalum recommended near pin for stability. |
| 5 - VIN– | Inverting input | Differential input with 109Ω||4pF common-mode impedance; CMRR >80dB up to 10kHz. |
| 6 - VIN+ | Non-inverting input | DC-coupled input with extended common-mode range down to (V–) – 0.2V in linear operation. |
| 7 - E/S | Enable/Status bidirectional pin | Input: logic-low disables output; output: voltage drop indicates thermal shutdown - enables fault-aware system design. |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable current limit | 0–750mA set via resistor or DAC on ILIM pin - eliminates need for lossy series current-sense resistors in output path. |
| Output disable with status feedback | E/S pin provides both shutdown control and thermal fault indication - simplifies system-level power sequencing and diagnostics. |
| Wide supply flexibility | Operates from ±4V to ±30V or +8V to +60V - accommodates asymmetric rails (e.g., +55V/–5V) and legacy industrial power architectures. |
| Robust thermal protection | Internal shutdown at ~160°C with automatic recovery at ~140°C - prevents permanent damage while allowing safe intermittent overload handling. |
| Below-ground input capability | Input common-mode range extends to (V–) – 0.2V - enables true single-supply operation with ground-referenced sensors or DACs. |
Applications
| Valve & Actuator Drivers | Servo & Synchro Amplifiers |
|---|---|
|
Use Scenario: Driving industrial pneumatic/hydraulic valves or linear actuators requiring precise current-controlled force or position modulation. IC Role / Device Role / Timing Role: High-current output stage delivering stable, adjustable current into inductive coil loads with fast step response and thermal fault awareness. Use Value: Enables closed-loop current regulation without external sense resistors; E/S pin allows PLC-level fault reporting and safe shutdown coordination. |
Use Scenario: Amplifying error signals in analog servo loops for motor control, where high output current and low distortion maintain positional accuracy. IC Role / Device Role / Timing Role: Power op-amp configured as torque/current amplifier with ±500mA drive and 6V/µs slew rate to support rapid correction dynamics. Use Value: Maintains linearity under load variation; adjustable current limit prevents winding saturation while preserving signal fidelity up to 10kHz. |
| Programmable Power Supplies | Transducer Excitation & Test Equipment |
|
Use Scenario: Building benchtop or embedded programmable DC supplies with independently adjustable voltage and current limits. IC Role / Device Role / Timing Role: Core power regulation element using ILIM and feedback resistors to generate stable, digitally or potentiometer-controlled output. Use Value: Eliminates need for separate reference ICs - ILIM pin voltage serves as stable internal reference (~2.375V at 375mA limit) for voltage-setting network. |
Use Scenario: Providing precise excitation current/voltage to strain gauges, RTDs, piezoelectric sensors, or calibration standards in automated test systems. IC Role / Device Role / Timing Role: Low-drift, high-output-current source with <±1mV offset and <0.004% THD+N - ensures measurement-grade signal integrity. Use Value: Delivers clean, stable excitation without added noise or drift; thermal monitoring prevents sensor damage during prolonged bias conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-current operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA548T | Higher 1.5A continuous output current; wider ±5V to ±35V supply range; same TO-220-7 package and pinout. | Better suited for higher-power actuator or motor driver stages where >500mA is required. | Select OPA548T when peak load current exceeds 500mA and thermal margin allows higher dissipation. |
| LM675T | Lower 4A peak (but only 3A continuous); no integrated current limit adjustment or E/S pin; older architecture with higher 10mV offset. | Applicable for cost-sensitive, non-programmable power amp roles where thermal monitoring is handled externally. | Choose LM675T only if programmable current limiting and thermal status feedback are not required and offset tolerance >±5mV is acceptable. |
Compared with OPA547FKTWTG3, the OPA548T offers higher current headroom and extended supply range but shares identical control interface and thermal management features, whereas the LM675T lacks digital-ready diagnostics and precision current limiting - making it less suitable for modern programmable or safety-monitored systems.
Availability
OPA547FKTWTG3 is available at Aetrix Electronics and suitable for valve drivers, servo amplifiers, and programmable power supplies requiring stable component supply, long-term industrial lifecycle support, and traceable sourcing.
Supply support for OPA547FKTWTG3 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 power management ICs.
The OPA547FKTWTG3 belongs to TI's OPA high-voltage, high-current op-amp family, engineered for industrial actuation, motion control, and programmable power applications demanding reliability, thermal intelligence, and flexible current limiting.
FAQ
What is the package type and thermal performance of the OPA547FKTWTG3?
The OPA547FKTWTG3 uses a 7-lead TO-220 (KVT) package with an electrically connected copper tab tied to the V– pin. Its thermal resistance is θJC = 2°C/W (pulsed) and 3°C/W (dc), and θJA = 65°C/W without heatsink. Mounting the tab directly to a heatsink or large PCB copper area is essential to maintain junction temperature ≤150°C under continuous 500mA load.
How does the ILIM pin adjust current limit on the OPA547FKTWTG3?
The ILIM pin accepts a 0–150µA control current to set the OPA547FKTWTG3's output current limit from 0mA to ±750mA. A resistor between ILIM and V– (e.g., 31.6kΩ for ±375mA) or a DAC output generates this current. Unlike shunt-based limiters, this method avoids power loss in the output path and preserves voltage compliance.
Can the OPA547FKTWTG3 operate from a single supply, and what is its input voltage range?
Yes, the OPA547FKTWTG3 operates from a single supply of +8V to +60V. Its input common-mode range extends to (V–) – 0.2V, allowing true ground-referenced inputs even when V– = 0V. This makes it suitable for single-supply sensor interfaces, DAC buffers, and industrial I/O modules without level-shifting circuitry.
What function does the E/S pin serve on the OPA547FKTWTG3?
The E/S (Enable/Status) pin on the OPA547FKTWTG3 provides two independent functions: applying <(V–)+0.8V disables the output stage (reducing quiescent current to ~4mA), and monitoring its voltage reveals thermal shutdown status (drops from ~3.5V to ~0.35V above V– when TJ >160°C). Both functions can be used simultaneously.
Is the OPA547FKTWTG3 RoHS-compliant and what is its operating temperature range?
Yes, the OPA547FKTWTG3 is RoHS-compliant and rated for operation from –40°C to +85°C ambient temperature. Its junction temperature is specified up to +125°C continuous and protected up to +160°C via thermal shutdown. The device is qualified for extended industrial use with MSL Level-2-260°C-1 year reflow rating.
OPA547FKTWTG3 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:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 6V/µs
- Gain Bandwidth Product:
- 1 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 100 nA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 10mA
- Current - Output / Channel:
- 750 mA
- Voltage - Supply Span (Min):
- 8 V
- Voltage - Supply Span (Max):
- 60 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-263 (DDPAK-7)
OPA547FKTWTG3 FAQ
1.How can I place an order for OPA547FKTWTG3 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA547FKTWTG3 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 OPA547FKTWTG3 reliable?
The price and inventory of OPA547FKTWTG3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA547FKTWTG3 is usually 5 days.
3.What payment methods are accepted for OPA547FKTWTG3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA547FKTWTG3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA547FKTWTG3?
OPA547FKTWTG3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA547FKTWTG3 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 OPA547FKTWTG3?
For technical support, including OPA547FKTWTG3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA547FKTWTG3 requirements.
6.How does Aetrix verify that OPA547FKTWTG3 is sourced from the original manufacturer or authorized distributors?
All OPA547FKTWTG3 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 OPA547FKTWTG3 meets industry standards.
7.What is the process for return or replacement of OPA547FKTWTG3?
All OPA547FKTWTG3 units undergo pre-shipment inspection (PSI). If there is an issue with OPA547FKTWTG3, 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 OPA547FKTWTG3 part is unused and in its original packaging.
Return procedure for OPA547FKTWTG3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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