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Texas Instruments OPA2675RGVR
- Part No.:
- OPA2675RGVR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-VQFN Exposed Pad
- Datasheet:
-
OPA2675RGVR.pdf
- Description:
- DUAL-CHANNEL, WIDEBAND, HIGH-POW
- Quantity:
- Payment:
- Shipping:
Inventory:2,129
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Product details
Overview
OPA2675 from Texas Instruments is a dual, high-output-current operational amplifier with active offline control, designed for broadband line driving in power-line modems and ultrasonic piezo systems. It delivers ±1000 mA output current, 340 MHz small-signal bandwidth at G = 4 V/V, 3500 V/µs slew rate, and operates from ±2.5 V to ±6.5 V or 4.5 V to 13 V supplies.
For engineers reviewing the OPA2675 datasheet, OPA2675 pinout, OPA2675 application, or OPA2675 equivalent, this page provides verified specifications, validated pin functions, confirmed power-mode behavior (full/75%/50%/offline), thermal protection details, and real-world use cases in TDMA-based PLC and matched I/Q channel amplification.
Technical Context
The OPA2675 integrates two independent high-current op amps in a single VQFN-16 package, supporting both single-ended and differential-output configurations. Its bipolar input stage enables wide common-mode range (±3.6 V at ±6 V supply), while active offline mode uses logic-controlled A0/A1 pins to place outputs in high-impedance state during TDMA idle periods.
Each channel features adjustable quiescent bias (16.5 / 12.5 / 8.5 / 2.4 mA per channel), overtemperature shutdown (~180°C), and ±1.3 A short-circuit current limiting. The device maintains stability across gain settings (G = 1–8 V/V) and supports 50 Ω transmission line driving with <0.1 dB flatness up to 50 MHz in differential mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-signal BW (G = 4) | 340 MHz - Enables high-fidelity signal reproduction in broadband video and PLC line drivers up to 100+ Mbps. |
| Output current | ±1000 mA - Drives heavy capacitive loads (e.g., piezo actuators) and 50 Ω transmission lines without external buffers. |
| Slew rate | 3500 V/µs - Supports fast transient response for ultrasonic burst signals and high-speed DAC output buffering. |
| Supply range | ±2.5 V to ±6.5 V or 4.5 V to 13 V - Compatible with industrial ±5 V, ±6 V, and single-supply 5 V/12 V systems. |
| Quiescent current (per channel) | 16.5 mA (full bias) to 2.4 mA (offline) - Reduces system power by >85% during TDMA sleep cycles without losing bias state. |
| Input voltage noise | 2.4 nV/√Hz @ ≥1 MHz - Preserves SNR in high-frequency signal chains such as I/Q baseband amplifiers. |
| Harmonic distortion | –70 dBc (2nd), –73 dBc (3rd) @ 20 MHz - Meets stringent linearity requirements for OFDM-based power-line communication. |
Pinout & Package
The OPA2675 is housed in a 4.00 mm × 4.00 mm RGV (VQFN-16) package with an exposed thermal pad electrically connected to –VS. Pin 1 is top-left corner (A1 side), and the thermal pad must be soldered to a PCB plane tied to –VS for optimal thermal performance and electrical stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Bias mode control input | Logic input selecting full/75%/50%/offline bias; referenced to GND; 0.8 V/2 V thresholds define logic states. |
| A1 | Bias mode control input | Second logic input enabling four discrete power modes; used with A0 to configure quiescent current per channel. |
| GND | Ground reference | Analog ground return for inputs, outputs, and internal circuitry; must be low-impedance and separated from digital ground. |
| –IN A / –IN B | Inverting input (Ch A/B) | Differential input nodes accepting signals referenced to GND; high impedance (10–40 Ω inverting input resistance). |
| +IN A / +IN B | Noninverting input (Ch A/B) | High-impedance (3 MΩ || 1.5 pF) input nodes; support rail-to-rail common-mode range up to ±3.6 V at ±6 V supply. |
| OUT A / OUT B | Amplifier output (Ch A/B) | Capable of ±1000 mA sourcing/sinking into 2 Ω loads; output impedance drops to 0.4 mΩ in closed-loop operation. |
| +VS / –VS | Power supply connections | +VS accepts 4.5–13 V (single) or ±2.5–±6.5 V (dual); –VS connects directly to thermal pad for thermal and electrical integrity. |
| NC (Pins 1,5,6,12,15) | No internal connection | Must remain unconnected; recommended to tie to GND plane for mechanical stability and EMI reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Active offline control | Logic-driven high-Z output state (85 dB isolation @ 1 MHz) preserves signal integrity on shared transmission lines during TDMA idle slots. |
| Four-step bias adjustment | Configurable per-channel quiescent current (16.5 → 12.5 → 8.5 → 2.4 mA) enables dynamic power scaling without changing external components. |
| Thermal shutdown protection | Auto-shutdown at ~180°C junction temperature with recovery at ~160°C prevents latch-up and ensures reliability in enclosed industrial environments. |
| Matched dual-channel architecture | Channel-to-channel crosstalk ≤ –85 dBc @ ≥1 MHz enables precise I/Q signal processing without inter-channel interference. |
| Robust output current limiting | ±1.3 A short-circuit limit protects against load faults while maintaining stable operation under 50 Ω or capacitive loads up to 1 mF. |
Applications
| Power-Line Modem Driver | Matched I/Q Channel Amplifier |
|---|---|
Use Scenario: Driving 50 Ω twisted-pair PLC channels in G3-PLC or PRIME-compliant meters with OFDM modulation up to 30 MHz. IC Role / Device Role / Timing Role: Final-stage line driver delivering high-current, low-distortion analog output synchronized to TDMA frame timing. Use Value: 850 mA min output drive at 25°C ensures margin for aging, temperature drift, and cable loss; active offline eliminates echo during receive slots. |
Use Scenario: Amplifying parallel I and Q baseband signals in software-defined radio front-ends before upconversion. IC Role / Device Role / Timing Role: Dual-channel, matched-gain amplifier preserving phase and amplitude balance between quadrature paths. Use Value: ±0.5 mV offset mismatch and –85 dBc crosstalk maintain <–45 dB image rejection; 340 MHz BW supports multi-carrier waveforms. |
| Broadband Video Line Driver | Ultrasonic-Piezo Driver |
Use Scenario: Driving long coaxial cables (e.g., HD-SDI, SMPTE 292M) with 75 Ω termination in broadcast equipment. IC Role / Device Role / Timing Role: High-slew-rate buffer isolating FPGA DAC outputs from reactive cable loads while maintaining DC coupling. Use Value: 3500 V/µs slew rate supports 1080p60 transitions; ±1000 mA output drives 75 Ω loads with <0.1 dB gain flatness to 3 GHz. |
Use Scenario: Driving high-capacitance piezoelectric transducers (1–10 nF) in medical ultrasound imaging or NDT systems. IC Role / Device Role / Timing Role: High-current voltage amplifier delivering burst-mode excitation pulses with fast rise/fall times. Use Value: 1.2 ns rise time (10–90%) and ±1000 mA drive enable sub-µs pulse shaping; thermal shutdown prevents transducer overheating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-output-current op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| THS6042 | Single-channel, ±15 V capable, no active offline mode, lower output current (±400 mA), higher quiescent current (25 mA/channel). | Used in legacy ±15 V test equipment; lacks TDMA power gating and PLC-specific distortion specs. | Select when ±15 V rails are mandatory and offline control is unnecessary; verify thermal design for sustained 400 mA loads. |
| OPA2677 | Dual-channel, same VQFN-16 package, ±12 V single-supply capable, but limited to ±400 mA output and no programmable bias modes. | Targeted at general-purpose high-speed amplification; missing 75%/50% bias steps and offline isolation. | Choose for cost-sensitive designs needing 730 MHz unity-gain BW but not requiring PLC-grade current drive or TDMA power management. |
Compared with THS6042 and OPA2677, the OPA2675 uniquely combines dual-channel ±1000 mA drive, four-step bias control, and active offline isolation-making it the only option qualified for G3-PLC line driver compliance and ultrasonic burst-mode efficiency.
Availability
OPA2675 is available at Aetrix Electronics and suitable for power-line modem development, broadband video infrastructure, and ultrasonic transducer driver designs requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for OPA2675 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-performance op amps and signal chain solutions.
The OPA2675 belongs to TI's high-output-current precision op amp product line, engineered specifically for demanding broadband line driving applications including PLC, video, and ultrasonic systems where power efficiency, thermal robustness, and signal fidelity are critical.
FAQ
What is the maximum output current specification for the OPA2675?
The OPA2675 is specified for ±1000 mA continuous output current per channel into a 2 Ω load at ±6 V supply and +25°C ambient. Minimum guaranteed output is ±850 mA over temperature (–40°C to +85°C). Short-circuit current is ±1300 mA, and the device includes internal current limiting to protect against overload conditions without latch-up.
Does the OPA2675 support single-supply operation?
Yes, the OPA2675 supports true single-supply operation from 4.5 V to 13 V. At VS = 5 V, it delivers ±460 mA output into 2 Ω and maintains 260 MHz small-signal bandwidth at G = 4 V/V. Input common-mode range extends to ±0.6 V, and output swing reaches ±1.5 V into 25 Ω, making it suitable for 5 V data acquisition and interface applications.
How does the active offline mode function in the OPA2675?
The OPA2675 enters active offline mode when both A0 and A1 pins are driven high (≥2 V), placing outputs in high-impedance state with 85 dB input-to-output isolation at 1 MHz. This preserves signal integrity on shared transmission lines during TDMA receive intervals and reduces system power to 2.4 mA per channel - critical for battery-powered PLC nodes.
What thermal management is required for the OPA2675 in continuous high-current operation?
The OPA2675 has RθJA = 43°C/W in the RGV package. For 2 × 1000 mA output at ±6 V (≈25 W dissipation), junction temperature rise exceeds safe limits without board-level cooling. Use the exposed thermal pad soldered to a ≥4 cm² copper pour tied to –VS, and consider forced airflow or heatsink integration. Thermal shutdown activates at ~180°C to prevent damage.
Can the OPA2675 be used in differential-output configuration?
Yes, the OPA2675 supports differential-output operation using both channels with external feedback networks. In differential mode at VS = 12 V, it achieves 220 MHz small-signal bandwidth, 230 MHz large-signal bandwidth, and –65 dBc harmonic distortion at 20 MHz - ideal for balanced line drivers and high-SNR ADC/DAC interfaces requiring common-mode rejection.
OPA2675RGVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-VQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 3500V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 730 MHz
- Current - Input Bias:
- 50 µA
- Voltage - Input Offset:
- 1.5 mV
- Current - Supply:
- 33mA
- Current - Output / Channel:
- 1 A
- Voltage - Supply Span (Min):
- 4.5 V
- Voltage - Supply Span (Max):
- 13 V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-VQFN (4x4)
OPA2675RGVR FAQ
1.How can I place an order for OPA2675RGVR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2675RGVR 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 OPA2675RGVR reliable?
The price and inventory of OPA2675RGVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2675RGVR is usually 5 days.
3.What payment methods are accepted for OPA2675RGVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2675RGVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2675RGVR?
OPA2675RGVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2675RGVR 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 OPA2675RGVR?
For technical support, including OPA2675RGVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2675RGVR requirements.
6.How does Aetrix verify that OPA2675RGVR is sourced from the original manufacturer or authorized distributors?
All OPA2675RGVR 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 OPA2675RGVR meets industry standards.
7.What is the process for return or replacement of OPA2675RGVR?
All OPA2675RGVR units undergo pre-shipment inspection (PSI). If there is an issue with OPA2675RGVR, 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 OPA2675RGVR part is unused and in its original packaging.
Return procedure for OPA2675RGVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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