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Texas Instruments OPA552UA/2K5
- Part No.:
- OPA552UA/2K5
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA552UA/2K5.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,340
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Product details
Overview
OPA552UA/2K5 from Texas Instruments is a high-voltage, high-current operational amplifier optimized for closed-loop gains ≥5, delivering 24 V/µs slew rate, 12 MHz gain-bandwidth product, and ±200 mA continuous output current into resistive loads. It features thermal shutdown with flag output, output current limiting, and rail-to-rail output swing within 3 V of supply rails - used in precision servo drivers, audio power stages, and transducer excitation circuits requiring robust output drive.
For engineers reviewing the OPA552UA/2K5 datasheet, OPA552UA/2K5 pinout, OPA552UA/2K5 application, or OPA552UA/2K5 equivalent, key selection criteria include minimum stable gain (≥5), thermal flag interface capability, SOIC-8 package thermal resistance (96.7°C/W), and compatibility with ±4 V to ±30 V dual supplies across –40°C to +125°C industrial temperature range.
Technical Context
The OPA552UA/2K5 implements a laser-trimmed monolithic architecture with a high-speed voltage amplifier stage followed by a thermally protected high-current output stage. Its internal compensation is tailored for noninverting or inverting configurations with noise gain ≥5, enabling stable operation without external compensation under typical load conditions.
Thermal shutdown activates at ~160°C junction temperature and resets at ~140°C, with the Flag pin sourcing 120 µA (typ) during shutdown versus <50 nA in normal operation. Output current is internally limited to ±380 mA (short-circuit), scaling downward with rising junction temperature per Figure 11.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | ±4 V to ±30 V - supports wide industrial and test equipment rails without external regulation |
| Slew Rate (G ≥ 5) | ±24 V/µs - enables fast settling for high-fidelity audio and servo position updates |
| Gain-Bandwidth Product | 12 MHz - defines usable small-signal bandwidth at gain ≥5 (e.g., 2.4 MHz at G = 5) |
| Output Current (DC) | ±200 mA continuous - drives low-impedance loads like piezoelectric transducers or voice coils directly |
| Input Voltage Noise | 14 nV/√Hz at 1 kHz - preserves signal integrity in low-level sensor amplification paths |
| Thermal Shutdown Threshold | ~160°C junction - protects die during overload; flag output signals condition to host controller |
| Common-Mode Rejection | 92–102 dB - maintains accuracy when input common-mode shifts near supply rails |
Pinout & Package
OPA552UA/2K5 is packaged in an 8-pin SOIC (D package), body size 4.9 mm × 3.91 mm, with exposed pad not connected. Pin 1 is located at the top-left corner adjacent to the notch or dot marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V– | Negative supply terminal | Connects to lowest potential rail; internal circuit reference and thermal sensor ground |
| –IN | Inverting input | Differential input node; high-impedance (10¹³ Ω || 6 pF) for precision feedback networks |
| +IN | Noninverting input | Differential input node; same impedance as –IN; common-mode range extends to within 2.5 V of rails |
| NC | No internal connection | Pins 1 and 5 are unconnected - must be left floating or tied to ground only if required for PCB symmetry |
| Out | Amplifier output | High-current output stage capable of ±200 mA; swing within 3 V of V+ and V– at full load |
| V+ | Positive supply terminal | Connects to highest potential rail; powers internal bias and output stage |
| Flag | Thermal shutdown indicator | Open-collector current source: <50 nA normal, ~120 µA during shutdown - interfaces directly to CMOS/HCT logic |
Key Features
| Feature | Design Value |
|---|---|
| Gain-optimized stability | Internally compensated for stable operation at closed-loop gains ≥5 - eliminates need for external compensation in standard configurations |
| Thermal flag output | Dedicated current-source Flag pin provides direct, logic-compatible indication of thermal shutdown - no external sensing circuitry required |
| Rail-swing output stage | Delivers output within 3 V of V+ and V– at ±200 mA - enables higher usable dynamic range than rail-to-rail op amps in high-voltage systems |
| Integrated current limit | Hard current limit at ±380 mA (typ) - prevents destructive overloads while maintaining safe operating area up to 125°C ambient |
| Laser-trimmed DC accuracy | ±3 mV max input offset voltage (25°C), ±5 mV over –40°C to +125°C - reduces calibration burden in closed-loop control systems |
Applications
| Telephony Line Drivers | Audio Power Stages |
|---|---|
Use Scenario: Driving balanced analog telephone line interfaces with programmable gain and echo cancellation circuitry. IC Role / Device Role / Timing Role: High-voltage output buffer and active filter driver delivering ±15 V swing into 600 Ω hybrid couplers. Use Value: 12 MHz GBW and 24 V/µs slew rate support wideband voice transmission up to 4 kHz with <0.0005% THD+N at 15 VRMS. | Use Scenario: Final-stage amplification in Class-AB headphone drivers and low-power speaker amplifiers. IC Role / Device Role / Timing Role: Unity-gain stable buffer (with external compensation) or fixed-gain power stage driving 16–32 Ω loads. Use Value: ±200 mA output current and 14 nV/√Hz noise enable clean, low-distortion audio delivery without external boost transistors. |
| Servo Motor Excitation | Capacitive Transducer Drivers |
Use Scenario: Positioning control loop output stage for DC brushless servos in industrial automation. IC Role / Device Role / Timing Role: High-slew-rate current source driving inductive motor windings via H-bridge gate drivers or direct coil interface. Use Value: Thermal flag alerts system controller before shutdown, enabling graceful deceleration; 24 V/µs slew ensures rapid torque response to position error signals. | Use Scenario: Exciting piezoelectric actuators, ultrasonic transducers, or MEMS sensors requiring high-voltage AC waveforms. IC Role / Device Role / Timing Role: Precision voltage-controlled current source generating ±25 V, 10–100 kHz sine/triangle waveforms into capacitive loads up to 10 nF. Use Value: Stable capacitive load drive (per Figure 28) and 12 MHz bandwidth allow accurate waveform reproduction without peaking or ringing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage, high-current operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA551UA/2K5 | Unity-gain stable; 15 V/µs slew rate; 3 MHz GBW; same SOIC-8 package and pinout | Preferred for G = 1 to 4 configurations where stability without compensation is required | Select OPA551UA/2K5 when gain < 5 or when wider output swing margin (2 V from rail) is critical over speed |
| OPA547T | Higher output current (±500 mA); programmable current limit; TO-220 package; no thermal flag output | Used in high-power lab instrumentation and DC motor controllers needing >200 mA | Choose OPA547T when output current >200 mA is mandatory and thermal monitoring can be implemented externally |
Compared with OPA552UA/2K5, the OPA551UA/2K5 trades speed and bandwidth for unconditional stability at low gains, while the OPA547T sacrifices thermal flag functionality and SOIC packaging for higher current and programmable protection - making OPA552UA/2K5 optimal for compact, high-speed, thermally monitored gain ≥5 applications.
Availability
OPA552UA/2K5 is available at Aetrix Electronics and suitable for telephony line drivers, audio power stages, servo motor excitation, capacitive transducer drivers, and test equipment requiring stable component supply across extended temperature and voltage ranges.
Supply support for OPA552UA/2K5 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 company designing analog ICs, embedded processors, and digital signal solutions for industrial, automotive, and communications markets.
The OPA55x family was developed to deliver cost-effective, thermally robust, high-output-current operational amplifiers for precision power amplification in harsh environments - targeting servo, audio, transducer, and test equipment applications.
FAQ
What is the minimum closed-loop gain required for stable operation of the OPA552UA/2K5?
The OPA552UA/2K5 is internally compensated for stable operation at closed-loop gains of 5 or greater. Attempting to use it at gains below 5 (e.g., unity gain or G = 2) risks oscillation unless external compensation is applied - as demonstrated in Figure 31 of the datasheet using noise-gain shaping with CS and CF. The OPA552UA/2K5 datasheet explicitly states "OPA552 is optimized for gains of 5 or greater" and does not guarantee stability at lower gains without modification.
Does the OPA552UA/2K5 provide rail-to-rail output swing?
No, the OPA552UA/2K5 does not provide rail-to-rail output swing. At ±200 mA load, its output swings to within 3 V of each supply rail (e.g., V– + 3 V to V+ – 3 V). At lighter loads (e.g., 10 mA), swing improves to within 2.5 V of rails. This behavior is specified in the Electrical Characteristics table under "Voltage output" and reflects design trade-offs for high-voltage, high-current capability - unlike rail-to-rail op amps, the OPA552UA/2K5 prioritizes output drive strength over minimal headroom.
How is the Flag pin of the OPA552UA/2K5 used in system monitoring?
The Flag pin on the OPA552UA/2K5 is an open-collector current source that outputs <50 nA during normal operation and ~120 µA (typical) when thermal shutdown activates at ~160°C junction temperature. It can be interfaced directly to CMOS or HCT logic using a pull-up resistor (e.g., 27 kΩ to +5 V for HCT, 47 kΩ for CMOS), producing a logic-high signal during shutdown. This allows real-time thermal fault detection without external sensors - a key feature confirmed in Section 7.3.4 and Figure 25–26 of the OPA552UA/2K5 datasheet.
Can the OPA552UA/2K5 drive capacitive loads without oscillation?
Yes, the OPA552UA/2K5 can drive capacitive loads stably - but only with appropriate external compensation. Figure 28 in the OPA552UA/2K5 datasheet shows a proven method using series resistor RF and feedback capacitor CF to maintain phase margin with 10-nF loads. Without such compensation, low-noise-gain configurations (especially G < 5) with >100 pF loads may exhibit peaking or oscillation, as verified in Figure 19 (overshoot vs load capacitance). The device's internal compensation targets resistive and moderate reactive loads, not large capacitors.
What is the maximum continuous output current specification for the OPA552UA/2K5?
OPA552UA/2K5 is rated for ±200 mA continuous DC output current into resistive loads, as specified in the "Maximum continuous current output: DC" row of the Electrical Characteristics table (Section 6.5). This rating assumes proper PCB layout, adequate heat sinking, and operation within the recommended temperature range (–40°C to +125°C). Short-circuit current is higher (±380 mA), but sustained operation above ±200 mA requires derating based on thermal resistance (RθJA = 96.7°C/W for SOIC-8) and ambient conditions - detailed in Section 10.4 (Safe Operating Area).
OPA552UA/2K5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 24V/µs
- Gain Bandwidth Product:
- 12 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 20 pA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 7mA
- Current - Output / Channel:
- 200 mA
- Voltage - Supply Span (Min):
- 8 V
- Voltage - Supply Span (Max):
- 60 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
OPA552UA/2K5 FAQ
1.How can I place an order for OPA552UA/2K5 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA552UA/2K5 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 OPA552UA/2K5 reliable?
The price and inventory of OPA552UA/2K5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA552UA/2K5 is usually 5 days.
3.What payment methods are accepted for OPA552UA/2K5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA552UA/2K5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA552UA/2K5?
OPA552UA/2K5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA552UA/2K5 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 OPA552UA/2K5?
For technical support, including OPA552UA/2K5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA552UA/2K5 requirements.
6.How does Aetrix verify that OPA552UA/2K5 is sourced from the original manufacturer or authorized distributors?
All OPA552UA/2K5 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 OPA552UA/2K5 meets industry standards.
7.What is the process for return or replacement of OPA552UA/2K5?
All OPA552UA/2K5 units undergo pre-shipment inspection (PSI). If there is an issue with OPA552UA/2K5, 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 OPA552UA/2K5 part is unused and in its original packaging.
Return procedure for OPA552UA/2K5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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