My Inquiry
My Account
Texas Instruments OPA547FKTWT
- Part No.:
- OPA547FKTWT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- TO-263-8, D2PAK (7 Leads + Tab), TO-263CA
- Datasheet:
-
OPA547FKTWT.pdf
- Description:
- IC OPAMP GP 1 CIRC DDPAK/TO263-7
- Quantity:
- Payment:
- Shipping:
Inventory:1,305
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
OPA547FKTWT from Texas Instruments is a high-voltage, high-current operational amplifier designed for precision power driving applications. It delivers ±500mA continuous output current, supports ±4V to ±30V dual supplies (or +8V to +60V single supply), features 6V/µs slew rate and adjustable current limiting from 0mA to ±750mA via the ILIM pin - enabling robust valve, actuator, and transducer excitation in industrial control systems.
For engineers reviewing the OPA547FKTWT datasheet, OPA547FKTWT pinout, OPA547FKTWT application, or OPA547FKTWT equivalent, this page provides verified technical context, package-specific thermal and electrical behavior, real-world enable/status pin implementation details, and validated alternatives for high-current op-amp selection in demanding analog power stages.
Technical Context
The OPA547FKTWT integrates laser-trimmed monolithic circuitry for low input offset voltage (±1mV typ) and high open-loop gain (100dB min), supporting accurate closed-loop control across wide supply ranges. Its internal current-sense architecture enables precise, resistor- or DAC-programmable current limiting without series power resistors in the output path.
Thermal shutdown activates at ~160°C junction temperature with automatic reset at ~140°C, while the Enable/Status (E/S) pin simultaneously controls output disable (reducing quiescent current to ±4mA) and reports thermal fault status via voltage-level signaling - all within a single 7-lead DDPAK package with electrically isolated copper tab for direct heatsink mounting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | ±4V to ±30V dual or +8V to +60V single - enables flexible rail design for asymmetric loads and high-voltage industrial supplies. |
| Continuous Output Current | ±500mA - sufficient to drive solenoids, voice coils, and medium-power actuators without external boost stages. |
| Slew Rate | 6V/µs - supports fast transient response in servo loops and test equipment amplifiers up to ~100kHz full-power bandwidth. |
| Current Limit Range | 0mA to ±750mA - set by 0–150µA signal on ILIM pin, allowing digital (DAC) or analog (potentiometer) programming without power loss in sense resistor. |
| Input Common-Mode Range | Extends to (V−) − 0.1V in single-supply mode - permits ground-referenced sensor interfacing and true rail-to-rail input operation below negative rail. |
| Thermal Shutdown Threshold | Junction temperature ~160°C with hysteresis (reset at ~140°C) - protects die during overload while permitting brief pulse operation beyond DC SOA limits. |
| Quiescent Current | ±10–15mA active, ±4mA shutdown - reduces system standby power in multiplexed or intermittent-load applications. |
Pinout & Package
The OPA547FKTWT is packaged in a 7-lead DDPAK (TO-263, KTW) surface-mount power package with exposed copper thermal tab electrically connected to V−. The tab must be soldered to ≥2 in² of 1oz PCB copper for θJA ≤ 30°C/W; thermal resistance from junction to case (θJC) is 2°C/W (f > 50Hz).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - ILIM | Current limit control input | Accepts 0–150µA sink current to set output current limit from 0 to ±750mA; open = 0mA, shorted to V− = 750mA. |
| 2 - V− | Negative supply rail | Reference for ILIM, E/S, and output stage; copper tab is internally tied to this pin - requires isolation from heatsink if floating negative rail used. |
| 3 - VO | Output terminal | High-current output capable of ±500mA continuous; requires external clamp diodes for inductive/EMF-generating loads. |
| 4 - V+ | Positive supply rail | Supports up to +60V; bypassing with 0.1µF ceramic + 10µF tantalum directly at pin is mandatory for stability. |
| 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 typical minimizes offset error with high-impedance sources. |
| 7 - E/S | Enable/Status bidirectional pin | Pull ≤(V−)+0.8V to disable output (1µs response); monitor voltage: >2.4V = normal, <0.8V = thermal shutdown active. |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable current limiting | 0–750mA range set via ILIM pin using resistor or DAC - eliminates power-wasting series sense resistors and enables programmable overcurrent protection. |
| Output disable with status reporting | Single E/S pin disables output (reducing IQ to 4mA) and outputs thermal fault signal - simplifies system-level fault monitoring and power sequencing in multi-amplifier designs. |
| Wide supply flexibility | Operates from ±4V to ±30V or +8V to +60V - supports asymmetric rails (e.g., +55V/−5V) and eliminates need for separate high-voltage bias supplies. |
| Robust thermal protection | Internally monitored junction temperature with 20°C hysteresis (160°C trip / 140°C reset) - prevents permanent damage during sustained overload or inadequate heatsinking. |
| Extended industrial temperature range | Specified from −40°C to +85°C ambient - qualified for use in motor drives, PLC I/O modules, and factory automation equipment with high ambient thermal stress. |
Applications
| Valve & Actuator Drivers | Synchro & Servo Drivers |
|---|---|
|
Use Scenario: Driving 24V/500mA proportional solenoid valves in hydraulic control systems with PWM or analog position command. IC Role / Device Role / Timing Role: High-current voltage-controlled current source delivering precise force modulation without external pass transistors. Use Value: ±500mA output and 6V/µs slew rate enable sub-millisecond step response; adjustable current limit prevents coil burnout during stall conditions. |
Use Scenario: Amplifying resolver or synchro error signals to drive torque motors in aerospace flight control surfaces. IC Role / Device Role / Timing Role: Precision power op-amp configured as a Class-AB current amplifier with low THD+N (0.004% @ 1kHz) for clean torque command fidelity. Use Value: Laser-trimmed offset (±1mV) and high CMRR (>95dB) minimize position error; thermal shutdown protects against rotor lock-up faults. |
| Programmable Power Supplies | Transducer Excitation |
|
Use Scenario: Building lab-grade bench supplies with digitally controlled voltage (0–25V) and current (0–750mA) limits using DACs and feedback networks. IC Role / Device Role / Timing Role: Core power stage implementing programmable voltage source topology using ILIM pin voltage as internal reference. Use Value: ILIM pin's stable 4.75V reference allows accurate output scaling; E/S pin enables remote fault latching and supply sequencing. |
Use Scenario: Providing constant-current excitation to strain gauge bridges or RTDs in weigh scales and pressure sensors. IC Role / Device Role / Timing Role: Precision current source with 0.01% line regulation and low noise (90nV/√Hz) for high-resolution bridge measurements. Use Value: Input offset drift <±25µV/°C ensures stable excitation over temperature; wide common-mode range accommodates grounded-sensor configurations. |
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 continuous current (±1A), wider supply range (±5V to ±35V), but larger TO-220-11 package and no ILIM pin - uses fixed 1A current limit. | Preferred for higher-power actuator drivers where programmable current limiting is unnecessary and board space allows larger package. | Select OPA548T when ≥1A output is required and thermal design accommodates higher dissipation; avoid if ILIM-based current programming is essential. |
| LM675T | Lower cost, ±3A output, but only ±22V max supply, no thermal status reporting, no enable/disable function, and ±10mV offset (vs ±1mV for OPA547FKTWT). | Suitable for non-critical industrial amplifiers where precision, diagnostics, and programmability are secondary to raw current capability. | Choose LM675T for cost-sensitive, high-current applications without need for thermal monitoring or low-offset performance - not recommended for servo or precision excitation. |
Compared with OPA547FKTWT, OPA548T offers double the output current but sacrifices programmable current limiting and diagnostic visibility, while LM675T trades precision and feature integration for higher peak current and lower unit cost - making OPA547FKTWT optimal for applications requiring accuracy, controllability, and fault awareness in compact DDPAK form.
Availability
OPA547FKTWT is available at Aetrix Electronics and suitable for valve drivers, programmable power supplies, and transducer excitation systems requiring stable component supply, long-term industrial lifecycle support, and traceable sourcing for production programs.
Supply support for OPA547FKTWT 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 solutions.
The OPA547FKTWT belongs to TI's OPAxx high-current op-amp family, engineered specifically for industrial motion control, test instrumentation, and programmable power applications demanding accuracy, ruggedness, and integrated protection.
FAQ
What is the maximum continuous output current of the OPA547FKTWT?
The OPA547FKTWT delivers ±500mA continuous output current under specified thermal conditions (TCASE ≤ +85°C). This rating assumes proper heatsinking - the safe operating area (SOA) curve shows reduced current capability at higher voltage drops across the output transistor (VS – VO), especially above 25°C case temperature. Peak current up to ±750mA is achievable with appropriate current limiting and pulse duty cycle control.
How does the ILIM pin on the OPA547FKTWT set the current limit?
The ILIM pin on the OPA547FKTWT accepts a 0–150µA sink current to program the output current limit from 0mA to ±750mA. This is implemented using an internal transconductance amplifier - connecting a resistor (e.g., 31.6kΩ) between ILIM and V− sets ~±375mA, while shorting ILIM to V− yields ~±750mA. Unlike traditional designs, no power resistor is placed in the output path, eliminating associated losses and thermal drift.
Can the OPA547FKTWT operate from a single supply?
Yes, the OPA547FKTWT operates from a single supply ranging from +8V to +60V. Its input common-mode range extends to (V−) − 0.1V, enabling true ground-referenced input operation even when V− is tied to 0V. Output swing remains rail-to-rail within load-dependent headroom (e.g., (V+) − 1.9V at ±500mA), making it suitable for single-rail industrial sensors and actuators without level-shifting circuitry.
What is the function of the E/S pin on the OPA547FKTWT?
The E/S (Enable/Status) pin on the OPA547FKTWT serves two independent functions: pulling it ≤(V−) + 0.8V disables the output stage (reducing quiescent current to ±4mA), and monitoring its voltage indicates thermal shutdown status (≥2.4V = normal, ≤0.8V = active shutdown). Both functions operate simultaneously, enabling compact fault-aware system designs without additional supervision ICs.
What package type is used for the OPA547FKTWT?
The OPA547FKTWT uses a 7-lead DDPAK (TO-263, KTW) surface-mount package with an exposed copper thermal tab electrically connected to the V− pin. It ships in small tape-and-reel format (250 units per reel) and is rated for moisture sensitivity level MSL-2 (260°C peak reflow). The tab must be soldered to ≥2 in² of 1oz copper for optimal thermal performance (θJA ≤ 30°C/W).
OPA547FKTWT 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)
OPA547FKTWT FAQ
1.How can I place an order for OPA547FKTWT through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA547FKTWT 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 OPA547FKTWT reliable?
The price and inventory of OPA547FKTWT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA547FKTWT is usually 5 days.
3.What payment methods are accepted for OPA547FKTWT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA547FKTWT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA547FKTWT?
OPA547FKTWT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA547FKTWT 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 OPA547FKTWT?
For technical support, including OPA547FKTWT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA547FKTWT requirements.
6.How does Aetrix verify that OPA547FKTWT is sourced from the original manufacturer or authorized distributors?
All OPA547FKTWT 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 OPA547FKTWT meets industry standards.
7.What is the process for return or replacement of OPA547FKTWT?
All OPA547FKTWT units undergo pre-shipment inspection (PSI). If there is an issue with OPA547FKTWT, 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 OPA547FKTWT part is unused and in its original packaging.
Return procedure for OPA547FKTWT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA547FKTWT Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
