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Texas Instruments THS3120CDGN
- Part No.:
- THS3120CDGN
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
THS3120CDGN.pdf
- Description:
- IC OPAMP CFA 1 CIRCUIT 8HVSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:160
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Product details
Overview
THS3120CDGN from Texas Instruments is a low-noise, high-output-current current-feedback operational amplifier optimized for video distribution and high-speed analog signal amplification. It delivers 475 mA output drive, 1700 V/μs slew rate at ±15 V supply, 120 MHz small-signal bandwidth (G = 2), and 0.007% differential gain error with PAL/NTSC video signals. Its integrated power-down pin enables dynamic quiescent current reduction to 400 μA in standby mode.
For engineers reviewing the THS3120CDGN datasheet, THS3120CDGN pinout, THS3120CDGN application, or THS3120CDGN equivalent, this page provides verified electrical parameters, MSOP-8 PowerPAD™ package details, video-amplifier-specific performance curves, and validated alternative options for high-fidelity analog signal path design.
Technical Context
The THS3120CDGN employs a current-feedback architecture with separate high-impedance noninverting input (41 MΩ) and low-impedance inverting input, enabling wide bandwidth independent of closed-loop gain. Its transimpedance gain of 1.9 MΩ at ±15 V supports stable operation with capacitive loads up to 100 pF when paired with recommended RISO compensation resistors.
Power-down functionality is implemented via a dedicated PD pin referenced to an internal REF node (range: VS– to VS+ – 4 V); logic-high ≥ REF + 2 V disables the amplifier, reducing quiescent current to ≤500 μA while maintaining fast 4 μs turn-on delay. The device operates across ±5 V to ±15 V dual supplies with input common-mode range extending to ±12.7 V at ±15 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-signal bandwidth | 120 MHz at G = 2, RL = 50 Ω - enables full HD video signal amplification without attenuation |
| Slew rate | 1700 V/μs at ±15 V - supports 8-VPP output swings at >10 MHz without distortion |
| Output current | ±475 mA sourcing/sinking into 25 Ω - drives multiple 75-Ω video lines or capacitive FET gates |
| Differential gain error | 0.007% (PAL/NTSC, RL = 150 Ω) - preserves color fidelity in broadcast-quality video distribution |
| Input voltage noise | 2.5 nV/√Hz - minimizes added noise in low-level analog signal chains |
| Power-down quiescent current | ≤500 μA at PD ≥ REF + 2 V - reduces system standby power in portable or energy-sensitive designs |
| Supply voltage range | ±5 V to ±15 V - compatible with legacy industrial and modern low-voltage analog systems |
Pinout & Package
The THS3120CDGN is housed in an 8-pin MSOP PowerPAD™ package (DGN), where the exposed thermal pad is electrically isolated and must be soldered to a PCB copper plane for thermal management and optimal 1.71 W power dissipation at TA = +25°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NC) | No internal connection | Unused pin; must remain unconnected or grounded per layout guidelines |
| 2 (VIN−) | Inverting input | Low-impedance node for feedback network; bias current ≤15 μA max |
| 3 (VIN+) | Noninverting input | High-impedance node (41 MΩ); input capacitance 0.4 pF |
| 4 (VS−) | Negative supply rail | Accepts −5 V to −15 V; PSRR− ≥55 dB up to 100 MHz |
| 5 (REF) | Power-down reference | Internal reference node (VS– to VS+ − 4 V); sets PD threshold |
| 6 (VS+) | Positive supply rail | Accepts +5 V to +15 V; PSRR+ ≥60 dB up to 100 MHz |
| 7 (VOUT) | Amplifier output | Capable of ±13.5 V swing into 50 Ω; output impedance 0.04 Ω at 1 MHz |
| 8 (NC) | No internal connection | Unused pin; must remain unconnected or grounded per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Power-down control | Dedicated PD pin enables <4 μs activation and <6 μs deactivation with ≤500 μA standby current |
| Video-optimized linearity | 0.007% differential gain / 0.018° differential phase error ensures broadcast-grade NTSC/PAL signal integrity |
| High-current drive capability | 475 mA output into 25 Ω allows direct driving of multiple 75-Ω coaxial cables without external buffers |
| Low-noise architecture | 2.5 nV/√Hz voltage noise + 1 pA/√Hz noninverting current noise preserves SNR in precision analog front-ends |
| Thermally enhanced packaging | MSOP-8 PowerPAD™ achieves θJA = 58.4°C/W and 1.71 W power rating at +25°C ambient |
Applications
| Video Distribution Amplifier | Capacitive Load Driver |
|---|---|
|
Use Scenario: Distributing composite video signals to 4–8 monitors in broadcast studios or security systems. IC Role / Device Role / Timing Role: High-fidelity unity-gain buffer with minimal group delay variation across 0–10 MHz. Use Value: Maintains 0.007% differential gain and 90 MHz 0.1-dB flat bandwidth to prevent color bleeding and timing skew between outputs. |
Use Scenario: Driving MOSFET gates in high-speed switching power supplies or Class-D audio amplifiers. IC Role / Device Role / Timing Role: Fast-settling current-source driver delivering >400 mA peak current with <11 ns 0.1% settling time. Use Value: Enables sub-10 ns gate transitions and reduces switching losses by minimizing Miller plateau dwell time. |
| Power FET Driver | Pin Driver for Test Equipment |
|
Use Scenario: Directly sourcing/sinking gate charge for 100-V, 50-A SiC MOSFETs in motor drives. IC Role / Device Role / Timing Role: High-current, low-impedance output stage replacing discrete emitter-follower pairs. Use Value: Eliminates external buffer transistors while sustaining 475 mA continuous output into 10–25 Ω gate impedances. |
Use Scenario: Generating precise, fast-rising stimulus pulses for semiconductor ATE channel drivers. IC Role / Device Role / Timing Role: Precision pulse amplifier with 1700 V/μs slew rate and <10 ns rise/fall times. Use Value: Delivers clean 8-VPP, 10-MHz square waves with <52 ns 0.01% settling time for accurate DUT characterization. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-output-current, current-feedback amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| THS3121CDGN | No power-down pin; 7 mA quiescent current vs. THS3120CDGN's 4–7 mA active / ≤500 μA standby | Lacks dynamic power gating; unsuitable for battery-powered or duty-cycled video systems | Select THS3121CDGN only if continuous operation and maximum bandwidth stability are prioritized over power savings |
| LMH6723MA/NOPB | Lower output current (190 mA), no power-down, 1.1 GHz gain-bandwidth product but higher 4.2 nV/√Hz noise | Better suited for RF IF amplification than video distribution due to higher noise and lower drive | Choose LMH6723MA/NOPB when ultra-wideband small-signal gain is required and load current <200 mA |
Compared with THS3121CDGN, THS3120CDGN trades minor bandwidth consistency for critical power-down capability; versus LMH6723MA/NOPB, it delivers 2.5× higher output current and 42% lower voltage noise-making it superior for multi-load video and high-current analog driver roles.
Availability
THS3120CDGN is available at Aetrix Electronics and suitable for video distribution, capacitive load driving, and high-current analog signal conditioning requiring stable component supply across industrial temperature ranges (0°C to +70°C).
Supply support for THS3120CDGN 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 THS3120CDGN belongs to TI's THS31xx current-feedback amplifier family, engineered specifically for demanding video, test equipment, and high-speed analog driver applications where output current, slew rate, and video fidelity are critical.
FAQ
What is the maximum safe operating junction temperature for THS3120CDGN?
The THS3120CDGN has a maximum continuous operating junction temperature of +125°C, with absolute maximum limit at +150°C. Thermal design must ensure the PowerPAD™ is soldered to a thermally robust PCB plane to maintain TJ ≤ +125°C under worst-case load and ambient conditions. Exceeding +125°C continuously degrades long-term reliability.
Does THS3120CDGN require external compensation for driving 100-pF capacitive loads?
Yes-driving ≥100-pF capacitive loads requires external RISO isolation resistance. Per TI's SLOS420E datasheet Figure 8, a 20-Ω resistor is recommended for CL = 100 pF with G = 5. Omitting RISO risks peaking, overshoot, or oscillation due to phase margin loss at high frequencies.
How does the REF pin function in THS3120CDGN's power-down circuit?
The REF pin establishes the internal reference voltage for the PD pin comparator. Its valid range is VS– to (VS+ – 4 V). When PD voltage falls ≤ REF + 0.8 V, the amplifier enables; when PD ≥ REF + 2 V, it enters power-down mode. REF must not be externally driven-it is an internal node.
Can THS3120CDGN operate from a single +10 V supply?
Yes-THS3120CDGN supports single-supply operation from +10 V to +30 V. At +10 V, its input common-mode range is +1.3 V to +7.7 V, output swing is ±3.7 V into 1 kΩ, and small-signal bandwidth drops to ~95 MHz (G = 2). Full performance requires dual ±15 V or ±5 V supplies.
What is the typical differential phase error of THS3120CDGN at 150-Ω load and NTSC video signal?
The THS3120CDGN exhibits a typical differential phase error of 0.018° under NTSC conditions (G = 2, RF = 649 Ω, VS = ±15 V, 40 IRE ramp), measured across 1–8 simultaneous 150-Ω video loads. This value remains stable up to 8 loads, confirming suitability for multi-monitor video distribution without color timing distortion.
THS3120CDGN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- Current Feedback
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 1700V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 130 MHz
- Current - Input Bias:
- 3 µA
- Voltage - Input Offset:
- 2 mV
- Current - Supply:
- 7mA
- Current - Output / Channel:
- 490 mA
- Voltage - Supply Span (Min):
- 10 V
- Voltage - Supply Span (Max):
- 30 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-HVSSOP
THS3120CDGN FAQ
1.How can I place an order for THS3120CDGN through Aetrix?
Please submit a Request for Quotation (RFQ) for THS3120CDGN 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 THS3120CDGN reliable?
The price and inventory of THS3120CDGN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for THS3120CDGN is usually 5 days.
3.What payment methods are accepted for THS3120CDGN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for THS3120CDGN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for THS3120CDGN?
THS3120CDGN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your THS3120CDGN 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 THS3120CDGN?
For technical support, including THS3120CDGN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your THS3120CDGN requirements.
6.How does Aetrix verify that THS3120CDGN is sourced from the original manufacturer or authorized distributors?
All THS3120CDGN 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 THS3120CDGN meets industry standards.
7.What is the process for return or replacement of THS3120CDGN?
All THS3120CDGN units undergo pre-shipment inspection (PSI). If there is an issue with THS3120CDGN, 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 THS3120CDGN part is unused and in its original packaging.
Return procedure for THS3120CDGN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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