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Texas Instruments THS4211DGK
- Part No.:
- THS4211DGK
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
THS4211DGK.pdf
- Description:
- IC OPAMP VFB 1 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:205
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Product details
Overview
THS4211DGK from Texas Instruments is a unity-gain stable, voltage-feedback operational amplifier optimized for high-linearity signal conditioning in wideband analog systems. It delivers 970 V/µs slew rate, 1 GHz small-signal bandwidth (±5 V), –90 dBc THD at 30 MHz, 0.007% differential gain, and ±4 V output swing into 150 Ω - enabling precision ADC preamplification and video signal buffering.
For engineers reviewing the THS4211DGK datasheet, THS4211DGK pinout, THS4211DGK application, or THS4211DGK equivalent, key selection criteria include its 8-pin MSOP package with PowerPAD™ thermal enhancement, ±2.5 V to ±7.5 V dual-supply operation, low 7 nV/√Hz input voltage noise, and verified performance in active filtering and DAC output buffering circuits requiring <0.01% distortion up to 100 MHz.
Technical Context
The THS4211DGK employs a voltage-feedback architecture with fully compensated internal compensation, ensuring unconditional unity-gain stability without external feedback adjustments. Its high slew rate and wide bandwidth stem from a high-transconductance input stage driving a low-impedance, high-current output buffer capable of sourcing/sinking ≥170 mA.
Designed for ±5 V operation (also supports +5 V single supply), it maintains 0.1-dB flatness to 130 MHz at G = 2 and achieves –100 dBc third-harmonic distortion at 30 MHz with 2 VPP output into 499 Ω - confirming suitability for demanding RF IF chain and high-fidelity video signal paths where phase linearity and harmonic suppression are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-signal bandwidth | 1 GHz at G = 1, ±5 V - enables baseband-to-UHF signal amplification without peaking or instability |
| Slew rate | 970 V/µs at G = 1, ±5 V - supports clean 2-V-step transient response within 22 ns to 0.1% |
| THD @ 30 MHz | –90 dBc (2nd) / –100 dBc (3rd) into 499 Ω - meets broadcast-grade video and high-resolution ADC driver specs |
| Differential gain/phase | 0.007% / 0.003° at NTSC/PAL - preserves color fidelity in SD/HD video distribution |
| Input voltage noise | 7 nV/√Hz at 1 MHz - minimizes added noise in low-level sensor or IF amplifier stages |
| Output drive | ±4.0 V swing into 150 Ω, 220 mA sourcing - drives coaxial cables and multiple downstream loads directly |
| Supply range | ±2.5 V to ±7.5 V dual or +5 V to +15 V single - compatible with legacy ±5 V and modern low-voltage systems |
Pinout & Package
THS4211DGK uses an 8-pin MSOP package with exposed PowerPAD™ thermal pad on the underside, requiring solder connection to a PCB copper pour for thermal management per TI SLMA002/SLMA004 guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 NC | No Connection | Internally unconnected; must remain floating or grounded per layout best practices |
| 2 IN– | Inverting Input | Differential input node; high-impedance (4 MΩ), low capacitance (0.2 pF) |
| 3 IN+ | Non-inverting Input | Differential input node; matched to IN– for optimal CMRR >50 dB |
| 4 VS– | Negative Supply Rail | Connects to negative supply; decoupling capacitor required within 1 cm |
| 5 NC | No Connection | Internally unconnected; no routing or vias permitted |
| 6 VS+ | Positive Supply Rail | Connects to positive supply; decoupling capacitor required within 1 cm |
| 7 VOUT | Amplifier Output | Low-impedance (0.3 Ω) output capable of driving 10 Ω loads |
| 8 NC | No Connection | Internally unconnected; must remain floating or grounded |
Key Features
| Feature | Design Value |
|---|---|
| Unity-gain stability | Guaranteed stable at G = 1 without external compensation - eliminates risk of oscillation in gain-of-one configurations |
| PowerPAD™ thermal enhancement | θJC = 54.2°C/W enables 385 mW power dissipation at TA ≤25°C - sustains full performance under continuous high-output conditions |
| Low distortion at high frequency | –100 dBc HD3 at 30 MHz into 499 Ω - preserves signal integrity in wideband communications and test equipment |
| High output current capability | 220 mA sourcing / 170 mA sinking into 10 Ω - drives heavy capacitive or resistive loads without clipping |
| Wide supply flexibility | Operates from ±2.5 V to ±7.5 V or +5 V to +15 V - simplifies integration across mixed-voltage system designs |
Applications
| High Linearity ADC Preamplifier | Differential to Single-Ended Conversion |
|---|---|
Use Scenario: Conditioning analog signals prior to sampling by 12–16-bit ADCs in data acquisition systems operating up to 100 MSPS. IC Role / Device Role: Low-noise, low-distortion gain stage that maintains SNR and SFDR while providing precise DC-coupled gain. Use Value: 7 nV/√Hz input noise and –100 dBc HD3 at 30 MHz ensure >80 dB effective number of bits (ENOB) in high-speed digitization. | Use Scenario: Converting differential outputs from high-speed ADCs or DACs to single-ended signals for legacy interface or clock distribution. IC Role / Device Role: Precision difference amplifier with matched input impedance and high CMRR (>50 dB). Use Value: 0.007% differential gain error preserves amplitude accuracy across NTSC/PAL video bandwidths. |
| DAC Output Buffer | Active Filtering |
Use Scenario: Driving transmission lines or multi-load video distribution networks from high-resolution DACs in broadcast equipment. IC Role / Device Role: High-current, low-distortion output buffer isolating DAC core from load variations. Use Value: ±4 V swing into 150 Ω and 220 mA sourcing enable direct 75 Ω coax drive without external transistors. | Use Scenario: Implementing high-order, low-phase-error filters in RF receiver front-ends and spectrum analyzers. IC Role / Device Role: Active filter element in Sallen-Key or multiple-feedback topologies requiring wide bandwidth and low nonlinearity. Use Value: 1 GHz bandwidth and unity-gain stability allow filter corner frequencies up to 200 MHz with minimal Q degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| THS4215DGK | Identical AC/DC performance plus integrated power-down pin (PD); quiescent current drops to ≤900 µA in shutdown | Required where dynamic power gating is needed in battery-powered or thermally constrained systems | Select THS4215DGK only if power-down functionality is explicitly required; otherwise THS4211DGK offers identical signal-path performance at lower cost |
| LMH6629MF/NOPB | Lower 5.5 nV/√Hz noise, but narrower 720 MHz bandwidth and higher 26 mA quiescent current; not unity-gain stable | Better for ultra-low-noise preamp stages below 500 MHz; unsuitable for G = 1 without external compensation | Choose LMH6629MF/NOPB when noise dominates over bandwidth and stability requirements; verify stability with simulation for target gain |
Compared with THS4215DGK, THS4211DGK eliminates unnecessary power-down circuitry for fixed-on applications, reducing BOM count and layout complexity. Versus LMH6629MF/NOPB, THS4211DGK provides guaranteed unity-gain stability and 1 GHz bandwidth at lower supply current - making it preferable for wideband, gain-flexible signal chains.
Availability
THS4211DGK is available at Aetrix Electronics and suitable for high-speed data acquisition, broadcast video infrastructure, and RF test equipment requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for THS4211DGK 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 THS4211 product line targets wideband, low-distortion analog signal conditioning - specifically engineered for ADC/DAC interfacing, video distribution, and instrumentation where bandwidth, linearity, and stability must coexist.
FAQ
What supply voltages does the THS4211DGK support?
The THS4211DGK operates from ±2.5 V to ±7.5 V dual supplies or +5 V to +15 V single supply. At ±5 V, it delivers full performance including 1 GHz bandwidth and 970 V/µs slew rate. Quiescent current remains stable across this range, with typical values between 19 mA and 24 mA depending on temperature and supply level. The device is not rated for operation outside these limits.
Does the THS4211DGK require external compensation for unity-gain stability?
No, the THS4211DGK is internally compensated for unconditional unity-gain stability. It requires no external capacitors or resistors to maintain stability at G = 1, G = –1, or any closed-loop gain configuration. This is confirmed in the datasheet's "Features" section and validated across all process corners and temperature ranges from –40°C to +85°C.
What is the thermal design requirement for the THS4211DGK MSOP package?
The THS4211DGK DGK package incorporates a PowerPAD™ thermal pad on the underside that must be soldered to a PCB copper pour for effective heat dissipation. Without this connection, junction temperature exceeds safe limits rapidly. Thermal resistance θJA is 260°C/W; with proper thermal pad layout, θJC drops to 54.2°C/W, enabling 385 mW power dissipation at 25°C ambient.
How does the THS4211DGK perform in video applications?
The THS4211DGK delivers broadcast-grade video performance: 0.007% differential gain and 0.003° differential phase error at NTSC/PAL frequencies, with 130 MHz 0.1-dB bandwidth at G = 2. These specifications meet SMPTE 259M and ITU-R BT.601 standards for SD/HD video distribution, enabling direct replacement of legacy video op-amps without redesign.
Is the THS4211DGK pin-compatible with other members of the THS42xx family?
Yes, the THS4211DGK shares identical pinout and footprint with THS4215DGK and THS4211DGN (MSOP-8-PP). All variants use the same 8-pin MSOP layout with NC pins at 1, 5, and 8, and matching IN–, IN+, VS–, VS+, and VOUT assignments. This allows drop-in substitution between THS4211DGK and THS4215DGK where power-down functionality is not required.
THS4211DGK Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 970V/µs
- Gain Bandwidth Product:
- 350 MHz
- -3db Bandwidth:
- 325 MHz
- Current - Input Bias:
- 7 µA
- Voltage - Input Offset:
- 3 mV
- Current - Supply:
- 19mA
- Current - Output / Channel:
- 220 mA
- Voltage - Supply Span (Min):
- 5 V
- Voltage - Supply Span (Max):
- 15 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
THS4211DGK FAQ
1.How can I place an order for THS4211DGK through Aetrix?
Please submit a Request for Quotation (RFQ) for THS4211DGK 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 THS4211DGK reliable?
The price and inventory of THS4211DGK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for THS4211DGK is usually 5 days.
3.What payment methods are accepted for THS4211DGK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for THS4211DGK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for THS4211DGK?
THS4211DGK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your THS4211DGK 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 THS4211DGK?
For technical support, including THS4211DGK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your THS4211DGK requirements.
6.How does Aetrix verify that THS4211DGK is sourced from the original manufacturer or authorized distributors?
All THS4211DGK 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 THS4211DGK meets industry standards.
7.What is the process for return or replacement of THS4211DGK?
All THS4211DGK units undergo pre-shipment inspection (PSI). If there is an issue with THS4211DGK, 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 THS4211DGK part is unused and in its original packaging.
Return procedure for THS4211DGK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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