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Texas Instruments THS3201DGK
- Part No.:
- THS3201DGK
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
THS3201DGK.pdf
- Description:
- IC OPAMP CFA 1 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,058
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Product details
Overview
THS3201DGK from Texas Instruments is a 1.8-GHz current-feedback amplifier (CFA) optimized for high-speed, low-distortion signal buffering and driving. It delivers 6700 V/µs slew rate at G = 2, –78 dBc IMD3 at 20 MHz, 1.65 nV/√Hz input voltage noise, ±7.5 V supply operation, and 100 mA output drive - enabling precision arbitrary waveform generation and high-resolution ADC/DAC driver applications.
For engineers reviewing the THS3201DGK datasheet, THS3201DGK pinout, THS3201DGK application, or THS3201DGK equivalent, key selection criteria include its wideband current-feedback architecture, thermal-limited power dissipation in MSOP-8 package, gain-dependent bandwidth trade-offs, and compatibility with ±3.3 V to ±7.5 V supplies for test equipment and ATE signal chain design.
Technical Context
The THS3201DGK implements a current-feedback topology with transimpedance gain of 300 kΩ (typ), enabling near-constant slew rate across output step sizes and minimal settling time dependency on gain. Its inverting input presents low impedance (~11 Ω), while noninverting input offers high impedance (~780 kΩ), defining asymmetric feedback network requirements.
It operates with dual ±3.3 V to ±7.5 V supplies, supports unity-gain stable configurations, and exhibits frequency-dependent noise figure (11 dB at 100 MHz, G = 10), making it suitable for broadband RF and video signal conditioning where distortion and phase linearity are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Unity-Gain Bandwidth | 1.8 GHz - enables direct drive of >1-GHz ADC inputs without intermediate gain stages. |
| Slew Rate (G = 2) | 6700 V/µs - supports clean reproduction of fast-rising pulses up to 10-V step with sub-nanosecond rise/fall times. |
| IMD3 @ 20 MHz | –78 dBc - ensures minimal intermodulation artifacts in multi-tone test signals for ATE and spectrum analysis. |
| Input Voltage Noise | 1.65 nV/√Hz above 10 MHz - preserves SNR in wideband analog front-ends driving high-resolution converters. |
| Output Drive Current | ±100 mA - drives 100-Ω loads directly, eliminating need for external buffer stages in video or pulse generator outputs. |
| Supply Voltage Range | ±3.3 V to ±7.5 V - accommodates both low-power portable instrumentation and high-swing lab-grade signal sources. |
| Operating Temperature | –40°C to +85°C - qualified for industrial and automated test environments with ambient thermal cycling. |
Pinout & Package
The THS3201DGK is housed in an 8-pin MSOP package (DGK) with exposed thermal pad (non-electrical). Thermal management requires connection of the PowerPAD™ to a PCB copper plane for reliable operation at full output swing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN–) | Inverting input | Low-impedance node (~11 Ω); sets feedback path; requires matched resistor to ground for DC biasing. |
| 2 (VS–) | Negative supply | Connect to stable ±3.3 V to ±7.5 V rail; decoupling capacitor required within 1 cm. |
| 3 (IN+) | Noninverting input | High-impedance node (~780 kΩ); used for signal injection in noninverting configurations. |
| 4 (VS+) | Positive supply | Connect to stable ±3.3 V to ±7.5 V rail; decoupling capacitor required within 1 cm. |
| 5 (VOUT) | Amplifier output | Capable of ±5.5 V swing into 100 Ω; requires series isolation resistor when driving capacitive loads >10 pF. |
| 6–8 | No internal connection | Unused pins; must remain unconnected per TI datasheet Note A. |
Key Features
| Feature | Design Value |
|---|---|
| Current-feedback architecture | Enables constant slew rate and bandwidth scalability with gain, unlike voltage-feedback op-amps. |
| Low distortion at high frequency | –78 dBc IMD3 at 20 MHz allows use in spectral purity-critical ATE and communications test systems. |
| Wide supply range | Operates from ±3.3 V to ±7.5 V, supporting both battery-powered portables and benchtop instruments. |
| High output current | Delivers ±100 mA into 20 Ω, enabling direct drive of coaxial cables and active probes without external buffers. |
| Thermal-enhanced MSOP | DGK package includes PowerPAD™ for improved junction-to-board thermal resistance (θJB = 54.2°C/W). |
Applications
| Arbitrary Waveform Generation | High-Speed ADC Driver |
|---|---|
Use Scenario: Generating precise, low-jitter analog waveforms for semiconductor characterization and RF component testing. IC Role / Device Role / Timing Role: Final-stage output buffer amplifying DAC outputs to ±5.5 V into 50 Ω loads with <1 ns rise time. Use Value: Maintains signal fidelity up to 1 GHz due to 1.8-GHz bandwidth and –78 dBc IMD3, reducing harmonic contamination in stimulus signals. | Use Scenario: Driving the analog input of 14-bit, 250-MSPS ADCs in radar and communications receivers. IC Role / Device Role / Timing Role: Wideband gain block providing 2× noninverting amplification with 0.1 dB flatness to 380 MHz. Use Value: Input-referred noise of 1.65 nV/√Hz preserves ENOB; fast settling (20 ns to 0.1%) minimizes aperture uncertainty. |
| ATE Signal Source | Video Line Driver |
Use Scenario: Programmable voltage/current source in automated test equipment requiring fast transient response and low distortion. IC Role / Device Role / Timing Role: Output stage delivering ±7.5 V compliance with 100 mA sourcing/sinking capability. Use Value: Slew rate independence from step size ensures consistent pulse fidelity across amplitude ranges, critical for parametric testing. | Use Scenario: Driving multiple 150 Ω video loads (e.g., NTSC/PAL broadcast monitoring) with minimal differential gain/phase error. IC Role / Device Role / Timing Role: High-fidelity buffer maintaining 0.007° differential phase and 0.004% differential gain at 4.43 MHz. Use Value: Preserves color fidelity and timing integrity across multiple parallel video outputs without external equalization. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current-feedback amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| THS3202DGNR | Dual-channel CFA; 2-GHz bandwidth; higher quiescent current (24 mA/channel); same MSOP-8 PowerPAD™ package. | Supports dual-path signal routing (e.g., I/Q channels); not suitable for space-constrained single-channel designs. | Select when simultaneous amplification of two independent high-speed signals is required. |
| OPA695IDBVR | Voltage-feedback architecture; 1.7-GHz bandwidth; lower slew rate (1800 V/µs); SOT-23-6 package; no PowerPAD™. | Better DC precision (lower offset drift), but limited large-signal transient performance vs. THS3201DGK. | Select when DC accuracy dominates over pulse fidelity, and thermal load is light. |
Compared with THS3201DGK, THS3202DGNR provides channel density at higher power cost, while OPA695IDBVR trades transient linearity for DC stability and smaller footprint - choice depends on whether system priority is pulse fidelity (THS3201DGK), multi-channel integration (THS3202), or compact DC-coupled gain (OPA695).
Availability
THS3201DGK is available at Aetrix Electronics and suitable for arbitrary waveform generation, high-speed data acquisition, and automated test equipment requiring stable component supply and long-term industrial availability.
Supply support for THS3201DGK 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 digital signal technologies for industrial, automotive, and communications markets.
The THS3201DGK belongs to TI's high-speed current-feedback amplifier product line, engineered specifically for wideband, low-distortion signal conditioning in test and measurement, ATE, and high-resolution converter interface applications.
FAQ
What is the maximum recommended supply voltage for the THS3201DGK?
The THS3201DGK has an absolute maximum supply voltage rating of ±8.25 V, but the recommended operating range is ±3.3 V to ±7.5 V. Operation at ±7.5 V enables full output swing (±5.5 V into 100 Ω) and optimal AC performance including 1.8-GHz bandwidth and –78 dBc IMD3. Exceeding ±7.5 V risks exceeding thermal limits in the MSOP-8 PowerPAD™ package without enhanced cooling.
Does the THS3201DGK require external compensation for stability?
No, the THS3201DGK is unity-gain stable and does not require external compensation components. Its current-feedback architecture inherently maintains phase margin across gains ≥1 when using appropriate feedback resistors (e.g., 768 Ω for G = 2). However, capacitive loads >10 pF at the output require an isolation resistor (RISO) - values from 15 Ω to 30 Ω depending on load capacitance - to prevent peaking or oscillation.
How does the THS3201DGK's current-feedback architecture affect PCB layout?
The THS3201DGK's current-feedback design demands tight matching of feedback and gain-setting resistors, short traces to the inverting input (Pin 1), and strict decoupling: 100 nF ceramic + 10 µF tantalum within 1 cm of Pins 2 and 4. The low-impedance inverting input makes it sensitive to parasitic capacitance, so ground planes under feedback traces must be removed to avoid instability - unlike voltage-feedback op-amps.
Can the THS3201DGK drive a 50 Ω coaxial cable directly?
Yes, the THS3201DGK can drive a 50 Ω load directly with ±5.5 V swing and 100 mA output capability, but requires a 50 Ω series termination resistor at the amplifier output (not at the load end) to prevent reflections and maintain signal integrity. This configuration matches the source impedance and avoids doubling the effective load seen by THS3201DGK, preserving bandwidth and settling behavior.
Is the THS3201DGK suitable for driving SAR ADCs with fast input sampling?
Yes, the THS3201DGK is well-suited for driving SAR ADCs requiring fast, low-distortion input settling - especially those with 14+ bits and sampling rates >10 MSPS. Its 20 ns settling time to 0.1% and 1.65 nV/√Hz input voltage noise preserve dynamic range, while its ability to deliver 100 mA ensures adequate charge replenishment during acquisition cycles without droop or distortion.
THS3201DGK Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Amplifier Type:
- Current Feedback
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 9800V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 1.8 GHz
- Current - Input Bias:
- 14 µA
- Voltage - Input Offset:
- 700 µV
- Current - Supply:
- 14mA
- Current - Output / Channel:
- 115 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
THS3201DGK FAQ
1.How can I place an order for THS3201DGK through Aetrix?
Please submit a Request for Quotation (RFQ) for THS3201DGK 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 THS3201DGK reliable?
The price and inventory of THS3201DGK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for THS3201DGK is usually 5 days.
3.What payment methods are accepted for THS3201DGK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for THS3201DGK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for THS3201DGK?
THS3201DGK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your THS3201DGK 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 THS3201DGK?
For technical support, including THS3201DGK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your THS3201DGK requirements.
6.How does Aetrix verify that THS3201DGK is sourced from the original manufacturer or authorized distributors?
All THS3201DGK 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 THS3201DGK meets industry standards.
7.What is the process for return or replacement of THS3201DGK?
All THS3201DGK units undergo pre-shipment inspection (PSI). If there is an issue with THS3201DGK, 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 THS3201DGK part is unused and in its original packaging.
Return procedure for THS3201DGK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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