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Texas Instruments THS3061D
- Part No.:
- THS3061D
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
THS3061D.pdf
- Description:
- IC OPAMP CFA 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:292
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Product details
Overview
THS3061D from Texas Instruments is a single-channel, high-voltage, current-feedback amplifier optimized for low-distortion, high-slew-rate signal conditioning. It delivers 7000 V/µs slew rate at ±15 V supplies, 300 MHz unity-gain bandwidth, –81 dBc 3rd-harmonic distortion at 10 MHz (G = 2, RL = 150 Ω), and ±145 mA output drive into 50 Ω - enabling use in video line drivers, VDSL line drivers, and high-voltage ADC preamplifiers.
For engineers reviewing the THS3061D datasheet, THS3061D pinout, THS3061D application, or THS3061D equivalent, key selection criteria include its current-feedback architecture's gain-bandwidth independence, PowerPAD-enhanced thermal performance in SOIC-8, and verified operation across ±5 V to ±15 V supplies with < 0.3 dB peaking in unity gain.
Technical Context
The THS3061D implements a current-feedback topology using TI's BiCOM-1 dielectrically isolated bipolar process, enabling high fT transistors and stable wideband response without gain-dependent bandwidth roll-off. Its transimpedance gain of 0.6–1 MΩ (min) and low 71 Ω inverting-input resistance define its feedback node impedance behavior.
It operates with dual supplies from ±4.5 V to ±16.5 V absolute max, supports noninverting and inverting configurations, and requires external feedback/gain resistors selected per gain (e.g., 560 Ω at G = 2, 357 Ω at G = 5). The device exhibits 0.1-dB flat bandwidth up to 120 MHz (G = 2) and maintains < 0.3 dB peaking at unity gain.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Unity-Gain Bandwidth | 300 MHz - enables stable high-frequency closed-loop operation without phase-margin collapse at G = 1. |
| Slew Rate | 7000 V/µs at ±15 V - supports full-scale 20-V step response in < 3 ns with minimal slewing distortion. |
| 3rd Harmonic Distortion | –81 dBc at 10 MHz, G = 2, RL = 150 Ω - meets broadcast video differential gain/phase specs (0.02%/0.01°). |
| Output Current Drive | ±145 mA into 50 Ω - drives twisted-pair telecom lines or back-terminated video loads without external buffers. |
| Supply Voltage Range | ±5 V to ±15 V - supports industrial and instrumentation rails; quiescent current remains ≤12 mA across range. |
| Input Voltage Noise | 2.6 nV/√Hz - dominates system noise when source impedance < 500 Ω, critical for low-noise preamp stages. |
| 0.1-dB Flat Bandwidth | 120 MHz at G = 2 - ensures amplitude fidelity across HD video baseband (0–108 MHz) with < 0.1 dB ripple. |
Pinout & Package
The THS3061D is packaged in an 8-pin SOIC (D package) with PowerPAD thermally enhanced construction. The exposed thermal pad must be soldered to a PCB copper plane for reliable operation at full output current.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NC) | No internal connection | Unused pin; must be left floating or grounded per layout best practices for noise immunity. |
| 2 (VIN−) | Inverting input | Low-impedance node (71 Ω); sets feedback path; sensitive to trace inductance in high-speed layouts. |
| 3 (VIN+) | Noninverting input | High-impedance node (518 kΩ); used for reference biasing or signal injection in noninverting configurations. |
| 4 (VS−) | Negative supply rail | Return path for internal bias and output stage; requires low-ESR local decoupling (0.1 µF + 10 µF). |
| 5 (NC) | No internal connection | Unused pin; no electrical function; avoid routing signals underneath. |
| 6 (VS+) | Positive supply rail | Power input for output stage and bias circuits; shares thermal pad thermal path with VS−. |
| 7 (VOUT) | Amplifier output | Capable of ±145 mA sink/source into 50 Ω; requires controlled-impedance routing and ground return symmetry. |
| 8 (NC) | No internal connection | Unused pin; electrically isolated; ties to package thermal slug but not silicon. |
Key Features
| Feature | Design Value |
|---|---|
| Current-feedback architecture | Decouples bandwidth from closed-loop gain - 220 MHz –3 dB BW maintained at G = 10 via 200 Ω feedback resistor. |
| PowerPAD thermal enhancement | θJA = 97.5°C/W (SOIC-8); enables 1.02 W dissipation at TA ≤ 25°C - critical for sustained 145 mA output into 50 Ω. |
| Low harmonic distortion | –81 dBc 3rd HD at 10 MHz ensures compliance with NTSC/PAL video standards and VDSL spectral mask requirements. |
| Wide supply range | Operates from ±5 V to ±15 V with monotonic PSRR > 63 dB - simplifies integration into mixed-rail systems without level-shifting. |
| Fast settling time | 125 ns to 0.01% for 2 V step (G = –2) - supports high-throughput data acquisition and pulse-amplification applications. |
Applications
| Video Line Driver | VDSL Line Driver |
|---|---|
Use Scenario: Driving 75 Ω coaxial cable in SD/HD broadcast equipment with DC-coupled RGB or YPbPr signals. IC Role / Device Role / Timing Role: Final-stage buffer amplifier delivering full-swing analog video with < 0.02% differential gain error. Use Value: Eliminates need for discrete emitter-follower buffers while maintaining 0.01° differential phase accuracy up to 100 MHz. | Use Scenario: Transmitting upstream/downstream DSL signals over twisted-pair telephone lines with 1–30 MHz bandwidth. IC Role / Device Role / Timing Role: High-output-current line driver amplifying DAC output to meet ITU-T G.993.1 spectral masks. Use Value: Delivers ±145 mA into 100 Ω differential load with –93 dBc 3rd-order IMD at 10 MHz, reducing upstream crosstalk. |
| High-Voltage ADC Preamplifier | Test & Measurement Signal Generator Output Stage |
Use Scenario: Conditioning ±10 V sensor signals before digitization by 16-bit SAR or sigma-delta ADCs. IC Role / Device Role / Timing Role: Gain-of-2 signal conditioner with rail-to-rail output swing (±13.3 V into 150 Ω) and low 2.6 nV/√Hz noise. Use Value: Preserves ENOB > 15 bits at 10 MHz by limiting harmonic distortion to –81 dBc and minimizing noise contribution. | Use Scenario: Generating clean, high-amplitude test waveforms (sine, square, pulse) for oscilloscope calibration or DUT stimulus. IC Role / Device Role / Timing Role: Wideband output driver delivering 20 VPP into 50 Ω with < 3 ns rise/fall time and < 0.3 dB gain flatness to 120 MHz. Use Value: Enables accurate frequency response verification up to 100 MHz without external amplification or compensation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed current-feedback amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| THS3061DGNR | Same die, MSOP-8-PP package with lower θJA (58.4°C/W) and smaller footprint; identical AC/DC specs. | Preferred for space-constrained PCBs requiring higher power density; requires thermal pad soldering. | Select THS3061DGNR when board area is limited and thermal management via PCB copper is feasible. |
| OPA691 | Wider 350 mA output drive, higher 350 MHz GBW, but higher 12.5 mA IQ; uses voltage-feedback architecture. | Better suited for ultra-high-current loads (>200 mA) or where voltage-feedback stability margins simplify design. | Choose OPA691 only if ≥350 mA drive or >300 MHz bandwidth is required; THS3061D offers superior distortion at 10–100 MHz. |
Compared with THS3061DGNR, the THS3061D offers identical electrical performance in a larger SOIC-8 package with simpler thermal layout; versus OPA691, it trades peak current and bandwidth for lower distortion and quiescent power in standard video and telecom line-driving roles.
Availability
THS3061D is available at Aetrix Electronics and suitable for video line drivers, VDSL line drivers, high-voltage ADC preamplifiers, and test & measurement signal generators requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for THS3061D 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, embedded processing, and connectivity technologies with over 50 years of innovation in high-performance amplifiers and data converters.
The THS3061D belongs to TI's high-speed current-feedback amplifier product line, engineered specifically for low-distortion, high-output-current applications in video infrastructure, wired communications, and precision test equipment.
FAQ
What is the maximum safe operating voltage for the THS3061D?
The THS3061D has an absolute maximum supply voltage rating of ±16.5 V. Continuous operation is specified from ±5 V to ±15 V, with thermal limits dictating derating above ±15 V. Exceeding ±16.5 V risks permanent damage per TI SLOS394B Absolute Maximum Ratings table.
Does the THS3061D require external compensation components?
No, the THS3061D is internally compensated for unity-gain stability and does not require external capacitors. Stability is ensured by selecting appropriate feedback resistors per Table 1 in the datasheet (e.g., 750 Ω for G = 1, 560 Ω for G = 2), with 1% tolerance recommended for optimal phase margin.
Can the THS3061D drive a 75 Ω coaxial cable directly?
Yes, the THS3061D can drive 75 Ω loads directly with full performance: at ±15 V supplies, it delivers ±13 V output swing into 75 Ω and maintains –81 dBc 3rd-harmonic distortion at 10 MHz, meeting SMPTE 259M and ITU-R BT.601 video line-driver requirements without external buffering.
How does the PowerPAD on the THS3061D package affect thermal design?
Although the THS3061D (SOIC-8 D package) does not incorporate PowerPAD - that feature is exclusive to DGN and DDA variants - its standard SOIC-8 still requires adequate copper pour on the VS+ and VS− pins. For THS3061D, thermal design relies on standard SOIC-8 θJA = 97.5°C/W; no thermal pad soldering is needed or possible.
Is the THS3061D suitable for driving ADC inputs in DC-coupled configurations?
Yes, the THS3061D supports DC-coupled ADC driving with ±13.3 V output swing into 150 Ω at ±15 V supplies, input offset voltage ≤ ±4.5 mV, and 0.02% differential gain error - preserving DC accuracy and dynamic range for 16-bit+ converters in instrumentation and medical imaging systems.
THS3061D Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- Current Feedback
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 7000V/µs
- Gain Bandwidth Product:
- 2.2 GHz
- -3db Bandwidth:
- 300 MHz
- Current - Input Bias:
- 6 µA
- Voltage - Input Offset:
- 700 µV
- Current - Supply:
- 8.3mA
- Current - Output / Channel:
- 145 mA
- Voltage - Supply Span (Min):
- 10 V
- Voltage - Supply Span (Max):
- 30 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
THS3061D FAQ
1.How can I place an order for THS3061D through Aetrix?
Please submit a Request for Quotation (RFQ) for THS3061D 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 THS3061D reliable?
The price and inventory of THS3061D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for THS3061D is usually 5 days.
3.What payment methods are accepted for THS3061D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for THS3061D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for THS3061D?
THS3061D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your THS3061D 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 THS3061D?
For technical support, including THS3061D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your THS3061D requirements.
6.How does Aetrix verify that THS3061D is sourced from the original manufacturer or authorized distributors?
All THS3061D 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 THS3061D meets industry standards.
7.What is the process for return or replacement of THS3061D?
All THS3061D units undergo pre-shipment inspection (PSI). If there is an issue with THS3061D, 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 THS3061D part is unused and in its original packaging.
Return procedure for THS3061D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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