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Texas Instruments OPA547F/500
- Part No.:
- OPA547F/500
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- TO-263-8, D2PAK (7 Leads + Tab), TO-263CA
- Datasheet:
-
OPA547F/500.pdf
- Description:
- IC OPAMP GP 1 CIRC DDPAK/TO263-7
- Quantity:
- Payment:
- Shipping:
Inventory:1,540
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Product details
Overview
OPA547F/500 from Texas Instruments is a high-voltage, high-current operational amplifier designed for precision power amplification in demanding industrial loads. It delivers ±500mA continuous output current, operates from ±4V to ±30V dual supplies (or +8V to +60V single supply), and features adjustable current limiting (0–750mA) via the ILIM pin - enabling valve drivers, servo actuators, and programmable power supplies.
For engineers reviewing the OPA547F/500 datasheet, OPA547F/500 pinout, OPA547F/500 application, or OPA547F/500 equivalent, key selection criteria include thermal shutdown indication, output disable control via E/S pin, wide output voltage swing (±2.2V headroom at 500mA), 6V/µs slew rate, and SOA-limited operation up to 125°C junction temperature.
Technical Context
The OPA547F/500 integrates laser-trimmed monolithic circuitry for low input offset voltage (±1mV typ) and high open-loop gain (100dB min), supporting accurate closed-loop control in high-power analog systems. Its internal current-sense architecture enables precise, resistor- or DAC-programmable current limiting without series power resistors in the output path.
Thermal protection activates at ~160°C junction temperature with automatic reset at ~140°C, while the Enable/Status (E/S) pin provides dual functionality: TTL-compatible output disable (reducing quiescent current to ±4mA) and open-drain thermal shutdown status reporting referenced to V–.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | ±4V to ±30V dual or +8V to +60V single - supports asymmetric rails (e.g., +55V/–5V) and simplifies high-voltage system design. |
| Continuous Output Current | ±500mA - sufficient to drive 50Ω loads at ±25V with full linear swing and low distortion (0.004% THD+N). |
| Slew Rate | 6V/µs - enables stable amplification of fast transients in test equipment and audio applications up to ~100kHz full-power bandwidth. |
| Current Limit Range | 0 to ±750mA - set by external resistor (RCL) or DAC on ILIM pin; avoids power loss and heat generation of traditional sense-resistor methods. |
| Input Common-Mode Range | Extends 0.1V below V– in single-supply mode - allows ground-referenced input signals without level-shifting circuitry. |
| Thermal Shutdown Threshold | Junction temperature ~160°C - protects die during overload; status reported via E/S pin voltage drop from ~3.5V to ~0.35V above V–. |
| Quiescent Current | ±10 to ±15mA active, ±4mA shutdown - reduces system power consumption during idle periods in multiplexed channel designs. |
Pinout & Package
The OPA547F/500 is housed in a 7-lead DDPAK (TO-263, KTW) surface-mount package with electrically isolated copper tab for direct PCB thermal coupling. The tab is not connected to any internal node and must be soldered to ≥1 in² of 1oz copper for θJA ≤ 40°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - ILIM | Current limit control input | Accepts 0–150µA current to set output limit from 0 to ±750mA; open = 0mA, shorted to V– = 750mA. |
| 2 - V– | Negative supply rail | Reference for all negative-side circuitry; ILIM and E/S voltages are referenced to this pin. |
| 3 - VO | Output terminal | High-current output capable of ±500mA continuous; requires external clamp diodes for reactive loads. |
| 4 - V+ | Positive supply rail | Supports up to +60V; bypassing with 0.1µF ceramic + 10µF tantalum recommended near pin. |
| 5 - VIN– | Inverting input | Differential input with 10⁹Ω || 4pF common-mode impedance; CMRR >80dB up to 10kHz. |
| 6 - VIN+ | Non-inverting input | Allows ground-referenced inputs in single-supply mode; input bias current –100nA typ. |
| 7 - E/S | Enable/Status bidirectional pin | Pull ≤(V–)+0.8V to disable output (1µs response); monitor voltage drop to detect thermal shutdown. |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable current limiting | 0–750mA set via external resistor or DAC on ILIM pin - eliminates power-wasting sense resistors and enables programmable overcurrent protection. |
| Output disable with status feedback | E/S pin simultaneously controls output stage enable/disable and reports thermal shutdown - simplifies fault monitoring in multi-amplifier systems. |
| Wide supply flexibility | Operates from ±4V to ±30V or +8V to +60V - accommodates legacy ±15V rails and modern high-voltage industrial supplies without redesign. |
| Extended temperature operation | Specified from –40°C to +85°C ambient, with junction rating up to +125°C - suitable for enclosed industrial enclosures and uncooled control cabinets. |
| SOA-optimized output stage | Safe Operating Area curve defined for DC and pulse operation - enables reliable use with motors, solenoids, and other reactive loads when heatsinked properly. |
Applications
| Valve & Actuator Drivers | Servo & Synchro Amplifiers |
|---|---|
Use Scenario: Driving 24V DC proportional solenoid valves in hydraulic control systems requiring precise current regulation and fast response. IC Role / Device Role / Timing Role: High-current op amp configured as precision current source with adjustable limit and thermal fault reporting. Use Value: Enables closed-loop current control without external sense resistors; E/S pin integration reduces component count and improves system reliability under overload. |
Use Scenario: Amplifying error signals in closed-loop motion control for CNC machines using synchro-to-digital converters. IC Role / Device Role / Timing Role: High-slew-rate, low-distortion power amplifier delivering ±500mA into low-impedance synchro windings. Use Value: Maintains signal fidelity up to 10kHz with <0.004% THD+N, ensuring accurate position resolution and minimizing torque ripple. |
| Programmable Power Supplies | Transducer Excitation & Test Equipment |
Use Scenario: Building benchtop or embedded programmable DC supplies with user-adjustable voltage (0–25V) and current (0–750mA) limits. IC Role / Device Role / Timing Role: Core power stage with dual DAC-controlled outputs - one for voltage setpoint, one for current limit via ILIM. Use Value: Eliminates need for separate reference ICs; ILIM pin voltage serves as stable internal reference (2.375V at 375mA limit) for voltage-setting feedback network. |
Use Scenario: Providing stable, low-noise excitation for strain gauges, RTDs, and piezoelectric sensors in automated test fixtures. IC Role / Device Role / Timing Role: Precision voltage source with low 90nV/√Hz input noise and high PSRR (>90dB at DC) to reject supply ripple. Use Value: Delivers clean, regulated excitation without added filtering; wide common-mode range allows direct ground-referenced sensor interfacing. |
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 ±40V max supply; same pinout and ILIM/E/S functionality. | Better suited for >500mA loads (e.g., large voice coils, high-power transducers) but requires larger heatsink and higher layout current capacity. | Select OPA548T when load current exceeds 500mA and thermal margin allows higher dissipation. |
| LM675T | Lower 3A peak (not continuous) output; no integrated current limit or E/S pin; ±22V max supply; higher 10V/µs slew rate. | Lacks programmable current limiting and thermal status reporting - requires external circuits for protection and monitoring. | Choose LM675T only for cost-sensitive, non-critical applications where discrete protection can be added and continuous 500mA is not required. |
Compared with OPA547F/500, OPA548T offers higher current headroom and extended voltage range but increases thermal and layout complexity, while LM675T sacrifices integrated protection and precision for raw speed and peak current - making OPA547F/500 optimal for applications needing balance of programmability, safety, and industrial-grade reliability.
Availability
OPA547F/500 is available at Aetrix Electronics and suitable for valve drivers, servo amplifiers, programmable power supplies, transducer excitation, and test equipment requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for OPA547F/500 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 OPA547F/500 belongs to TI's high-voltage, high-current operational amplifier product line, engineered specifically for industrial actuation, precision power control, and ruggedized test instrumentation where reliability, programmability, and thermal intelligence are critical.
FAQ
What is the maximum continuous output current of the OPA547F/500?
The OPA547F/500 delivers ±500mA continuous output current under specified thermal conditions (TCASE ≤ +85°C, proper heatsinking). This rating applies across the full operating temperature range and is validated per the Safe Operating Area (SOA) curve. Peak currents up to ±750mA are supported only with strict duty-cycle and voltage-headroom limitations - sustained operation beyond ±500mA risks thermal shutdown. The OPA547F/500 achieves this performance using an internally protected output stage with thermal foldback.
How does the ILIM pin on the OPA547F/500 adjust current limit?
The ILIM pin on the OPA547F/500 accepts a 0–150µA control current to set the output current limit from 0 to ±750mA. This is implemented via an internal transconductance amplifier - no external sense resistor is placed in the output path. A standard 1% resistor (e.g., 31.6kΩ for ±375mA) between ILIM and V– generates the required current. Alternatively, a DAC can drive ILIM directly. The OPA547F/500 uses this method to avoid power loss and thermal drift associated with traditional shunt-based limiting.
Can the OPA547F/500 operate from a single supply?
Yes, the OPA547F/500 operates from a single supply ranging from +8V to +60V. Its input common-mode range extends 0.1V below V–, allowing ground-referenced inputs without level-shifting. The output swings within ~1.3–2.2V of each rail depending on load current. For example, with +30V supply and 500mA load, VO reaches +27.7V (positive) and +1.3V (negative relative to ground). This makes the OPA547F/500 suitable for single-rail industrial control and programmable supply designs.
What does the E/S pin do on the OPA547F/500?
The E/S (Enable/Status) pin on the OPA547F/500 provides two independent functions: (1) pulling it ≤(V–)+0.8V disables the output stage within 1µs and reduces quiescent current to ±4mA; (2) monitoring its voltage reveals thermal shutdown status - ~3.5V above V– indicates normal operation, ~0.35V above V– indicates active thermal shutdown. Both functions share the same pin but operate independently, enabling compact fault-aware designs without additional logic.
What package type is used for the OPA547F/500?
The OPA547F/500 uses a 7-lead DDPAK (TO-263, KTW) surface-mount package with an isolated copper tab for thermal conduction. Unlike TO-220 variants, the DDPAK version is optimized for automated assembly and offers lower thermal resistance to PCB (θJC = 2°C/W). The tab must be soldered to ≥1 in² of 1oz copper to achieve rated performance; it is not electrically connected to any internal node. This package is distinct from through-hole OPA547T variants and ensures compatibility with high-volume SMT lines.
OPA547F/500 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:
- Active
- 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)
OPA547F/500 FAQ
1.How can I place an order for OPA547F/500 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA547F/500 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 OPA547F/500 reliable?
The price and inventory of OPA547F/500 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA547F/500 is usually 5 days.
3.What payment methods are accepted for OPA547F/500?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA547F/500 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA547F/500?
OPA547F/500 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA547F/500 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 OPA547F/500?
For technical support, including OPA547F/500 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA547F/500 requirements.
6.How does Aetrix verify that OPA547F/500 is sourced from the original manufacturer or authorized distributors?
All OPA547F/500 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 OPA547F/500 meets industry standards.
7.What is the process for return or replacement of OPA547F/500?
All OPA547F/500 units undergo pre-shipment inspection (PSI). If there is an issue with OPA547F/500, 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 OPA547F/500 part is unused and in its original packaging.
Return procedure for OPA547F/500:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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