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Texas Instruments THS3202DGK
- Part No.:
- THS3202DGK
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
THS3202DGK.pdf
- Description:
- IC OPAMP CFA 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,579
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Product details
Overview
THS3202DGK from Texas Instruments is a dual current-feedback amplifier (CFA) designed for high-frequency, low-distortion signal conditioning in demanding analog front-ends. It delivers 2 GHz unity-gain bandwidth, 9000 V/µs slew rate, ±115 mA output drive into 20 Ω, and operates from ±3.3 V to ±7.5 V dual supply (or 6.6–15 V single supply). It is used in RF/IF amplifier stages, high-voltage ADC preamplifiers, and professional video line drivers where wide bandwidth and low differential gain/phase error are critical.
For engineers reviewing the THS3202DGK datasheet, THS3202DGK pinout, THS3202DGK application, or THS3202DGK equivalent, this page provides verified technical context, package-specific thermal and electrical specifications, real-world application mappings, and validated alternative options for high-speed CFA selection in test & measurement, video, and communications systems.
Technical Context
The THS3202DGK implements a current-feedback architecture with low-impedance inverting input (11 Ω typical) and high-impedance noninverting input (780 kΩ), enabling stable high-gain operation up to 1 GHz at G = +5. Its transimpedance gain (≥120 kΩ over temperature) defines closed-loop bandwidth via feedback resistor selection-not fixed by internal compensation.
It features matched dual channels with –60 dB crosstalk at 100 MHz, differential gain error of 0.004% and phase error of 0.006° (NTSC/PAL, RL = 150 Ω), and maintains <0.01 Ω closed-loop output impedance at 1 MHz-critical for driving reactive or low-impedance loads without peaking or instability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Unity-Gain Bandwidth | 2 GHz at ±5 V supply - enables wideband signal amplification without stability trade-offs inherent in voltage-feedback op amps. |
| Slew Rate | 9000 V/µs at G = +2, 10-V step - supports fast transient response in pulse and video applications without slewing distortion. |
| Output Current Drive | ±115 mA into 20 Ω - sufficient to directly drive coaxial cables, ADC inputs, or active filters without external buffers. |
| Large-Signal Bandwidth | 875 MHz at G = +2, 4 VPP - ensures flat frequency response for high-amplitude signals in IF/RF chain stages. |
| Harmonic Distortion | –64 dBc (2nd) / –67 dBc (3rd) at 16 MHz, 2 VPP - meets stringent linearity requirements for baseband and IF signal processing. |
| Input Voltage Noise | 1.65 nV/√Hz above 10 MHz - optimized for high-frequency noise performance in wideband receiver front-ends. |
| Supply Range | ±3.3 V to ±7.5 V dual or 6.6–15 V single - supports both low-voltage portable designs and high-dynamic-range industrial systems. |
Pinout & Package
The THS3202DGK is housed in an 8-pin MSOP package with exposed thermal pad (PowerPAD™), requiring PCB thermal vias for junction temperature control below +125°C under continuous load. Package dissipation rating is 385 mW at TA = +25°C and 154 mW at TA = +85°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1VIN+ | Noninverting input, Channel 1 | High-impedance node (780 kΩ); referenced to common-mode voltage; sets input bias point for Channel 1. |
| 1VIN− | Inverting input, Channel 1 | Low-impedance node (11 Ω); connects to feedback network; dominates bandwidth and stability behavior. |
| 1VOUT | Output, Channel 1 | Capable of ±115 mA drive into 20 Ω; requires proper layout for low-inductance return path to minimize ringing. |
| VS− | Negative power supply | Must be decoupled with ≥0.1 µF ceramic capacitor near pin; shared return for both channels. |
| VS+ | Positive power supply | Must be decoupled with ≥0.1 µF ceramic capacitor near pin; PowerPAD™ must connect to ground plane for thermal management. |
| 2VIN− | Inverting input, Channel 2 | Independent low-Z node; allows separate feedback networks per channel for differential or independent gain configurations. |
| 2VIN+ | Noninverting input, Channel 2 | Independent high-Z node; enables independent DC biasing or signal routing for Channel 2. |
| 2VOUT | Output, Channel 2 | Fully matched to Channel 1; crosstalk ≤ –60 dB at 100 MHz ensures isolation in dual-path systems. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-channel current-feedback topology | Enables independent, high-bandwidth amplification paths with minimal inter-channel coupling (–60 dB crosstalk). |
| 2 GHz small-signal bandwidth at G = +1 | Supports direct amplification of signals up to UHF without cascading stages or compromising phase margin. |
| 0.004% differential gain / 0.006° phase error (NTSC) | Meets broadcast-grade video line driver specs; eliminates color fidelity loss in professional video equipment. |
| PowerPAD™ thermal package (DGK) | Reduces θJA to 260°C/W vs. 97.5°C/W for SOIC-8; essential for sustained high-output-current operation. |
| ±115 mA output drive into 20 Ω | Eliminates need for external buffer stages when driving 50 Ω or 75 Ω transmission lines or ADC reference buffers. |
Applications
| RF/IF Amplifier Stage | High-Voltage ADC Preamplifier |
|---|---|
|
Use Scenario: Amplifying 100–500 MHz IF signals in software-defined radio receivers prior to digitization. IC Role / Device Role / Timing Role: High-linearity, wideband gain block providing 20 dB fixed gain with minimal IMD3 (–64 dBc) and OIP3 > +40 dBm. Use Value: Preserves SNR and dynamic range across full IF band; eliminates need for discrete transistor-based amplifiers or multi-stage op-amp solutions. |
Use Scenario: Driving the input of a 16-bit, 100 MSPS ADC in medical imaging front-end with ±10 V full-scale range. IC Role / Device Role / Timing Role: Low-noise, high-slew-rate buffer delivering clean, fast-settling signals to ADC sample-and-hold circuitry. Use Value: Achieves <118 ns settling to 0.01% at 2 V step, ensuring accurate sampling without aperture uncertainty or harmonic folding. |
| Professional Video Line Driver | Test & Measurement Signal Generator Output |
|
Use Scenario: Driving 75 Ω coaxial video lines in broadcast camera signal chains with NTSC/PAL compliance. IC Role / Device Role / Timing Role: Precision video amplifier maintaining color fidelity via ultra-low differential gain/phase error. Use Value: 0.004% gain error and 0.006° phase error meet SMPTE 253M/296M standards; supports HD-SDI signal integrity. |
Use Scenario: Generating calibrated, low-distortion sine waves up to 200 MHz in automated test equipment (ATE) stimulus modules. IC Role / Device Role / Timing Role: Final-stage wideband output driver delivering programmable amplitude with flat frequency response. Use Value: 380 MHz 0.1-dB flatness bandwidth and –67 dBc 3rd harmonic ensure spectral purity required for RF calibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current-feedback amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| THS3201DGK | Single-channel version; identical bandwidth (2 GHz), slew rate (9000 V/µs), and output drive (±115 mA), but no second amplifier. | Used where only one high-speed path is needed-reduces board area and power vs. half-used dual device. | Select THS3201DGK when system requires only one CFA channel and space/power optimization is prioritized. |
| THS3091D | Higher supply voltage range (±15 V), lower bandwidth (420 MHz), higher PSRR (75 dB), but lower slew rate (2000 V/µs). | Better suited for precision DC-coupled applications with large signal swings, not wideband AC-coupled RF/video. | Choose THS3091D for ±15 V systems requiring high DC accuracy and moderate bandwidth-not for >500 MHz signal paths. |
Compared with THS3201DGK, THS3202DGK provides dual-channel integration for space-constrained multi-path systems; compared with THS3091D, it trades DC precision and supply headroom for 4.8× higher bandwidth and 4.5× faster slew rate-making it irreplaceable in GHz-range signal generation and video distribution.
Availability
THS3202DGK is available at Aetrix Electronics and suitable for RF and IF amplifier stages, high-voltage ADC preamplifiers, professional video line drivers, and test & measurement signal generator outputs requiring stable component supply across industrial temperature range (–40°C to +85°C).
Supply support for THS3202DGK 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-speed amplifier design and manufacturing.
The THS3202DGK belongs to TI's THS320x family of current-feedback amplifiers, engineered specifically for applications demanding GHz bandwidth, ultra-low distortion, and robust output drive in video, communications, and instrumentation systems.
FAQ
What is the maximum operating supply voltage for THS3202DGK?
The THS3202DGK supports dual-supply operation from ±3.3 V to ±7.5 V (15 V total) or single-supply operation from 6.6 V to 15 V. Absolute maximum supply voltage is ±8.25 V (16.5 V total), beyond which permanent damage may occur. Operation at ±7.5 V enables optimal large-signal bandwidth (1 GHz) and output swing (±13.3 V into 100 Ω), as confirmed in the datasheet's VS = 15 V electrical characteristics table.
Does THS3202DGK require external compensation components?
No, the THS3202DGK is internally compensated for unity-gain stability and does not require external compensation capacitors. Its current-feedback architecture relies on feedback resistor value (e.g., 402 Ω for G = +2) to set bandwidth and phase margin-no capacitor is needed in the feedback path. Layout best practices (short traces, ground plane, local decoupling) are sufficient for stable operation up to 2 GHz.
How does the PowerPAD™ thermal pad on THS3202DGK affect PCB layout?
The PowerPAD™ on THS3202DGK must be soldered to a thermally conductive PCB copper plane using ≥4 thermal vias (0.3 mm diameter) to an internal or bottom-layer ground plane. Failure to do so limits power dissipation to 154 mW at +85°C ambient and risks junction temperature exceeding +125°C, causing distortion increase and long-term reliability degradation. The DGK package's θJA is 260°C/W-significantly higher than DGN (58.4°C/W)-so thermal design is mandatory.
Can THS3202DGK drive a 50 Ω load directly?
Yes, THS3202DGK can drive a 50 Ω load directly: it delivers ±100 mA sinking and ±105 mA sourcing capability into 20 Ω at +85°C, exceeding the ±100 mA required for ±5 V into 50 Ω. At room temperature, output current reaches ±115 mA, supporting ±5.75 V into 50 Ω. For optimal flatness and stability, use G = +1 with RF = 500 Ω and ensure proper termination and layout to avoid reflections.
What is the small-signal bandwidth of THS3202DGK at G = +5?
At G = +5, the THS3202DGK achieves 780 MHz small-signal bandwidth (–3 dB) with RF = 300 Ω and RL = 100 Ω under ±5 V supply, and 850 MHz under 15 V supply. This is verified in the "Small-signal bandwidth, –3 dB" section of the Electrical Characteristics table. Bandwidth scales inversely with gain due to the CFA's transimpedance architecture, making it predictable and design-friendly for multi-gain systems.
THS3202DGK Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Bulk
- Product Status:
- Not For New Designs
- Amplifier Type:
- Current Feedback
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 9000V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 2 GHz
- Current - Input Bias:
- 13 µA
- Voltage - Input Offset:
- 700 µV
- Current - Supply:
- 14mA (x2 Channels)
- Current - Output / Channel:
- 120 mA
- Voltage - Supply Span (Min):
- 6.6 V
- Voltage - Supply Span (Max):
- 15 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
THS3202DGK FAQ
1.How can I place an order for THS3202DGK through Aetrix?
Please submit a Request for Quotation (RFQ) for THS3202DGK 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 THS3202DGK reliable?
The price and inventory of THS3202DGK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for THS3202DGK is usually 5 days.
3.What payment methods are accepted for THS3202DGK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for THS3202DGK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for THS3202DGK?
THS3202DGK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your THS3202DGK 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 THS3202DGK?
For technical support, including THS3202DGK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your THS3202DGK requirements.
6.How does Aetrix verify that THS3202DGK is sourced from the original manufacturer or authorized distributors?
All THS3202DGK 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 THS3202DGK meets industry standards.
7.What is the process for return or replacement of THS3202DGK?
All THS3202DGK units undergo pre-shipment inspection (PSI). If there is an issue with THS3202DGK, 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 THS3202DGK part is unused and in its original packaging.
Return procedure for THS3202DGK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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