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Texas Instruments THS4061CD
- Part No.:
- THS4061CD
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
THS4061CD.pdf
- Description:
- IC VOLTAGE FEEDBACK 1 CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,864
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Product details
Overview
THS4061CD from Texas Instruments is a single-channel, voltage-feedback operational amplifier optimized for high-speed video, imaging, and communication signal conditioning. It delivers 180 MHz bandwidth (G = 1, −3 dB), 400 V/µs slew rate, and 40 ns settling time (0.1%), with ±15 V supply operation and 115 mA output drive-enabling 75 Ω line driving in broadcast-quality NTSC video systems.
For engineers reviewing the THS4061CD datasheet, THS4061CD pinout, THS4061CD application, or THS4061CD equivalent, key selection considerations include its unity-gain stability, differential gain/phase errors of 0.02%/0.02° at ±15 V, low THD (−72 dBc @ 1 MHz), and SOIC-8 package compatibility with standard PCB layouts for analog front-end designs.
Technical Context
The THS4061CD employs a dielectrically isolated complementary bipolar process enabling GHz fT transistors, supporting wideband voltage-feedback architecture with internal compensation for unity-gain stability in both inverting and noninverting configurations. Its input stage features high common-mode rejection (70–110 dB) and rail-to-rail input capability (±13.8 V @ ±15 V).
Output stage delivers high current (115 mA typ) into 20 Ω loads while maintaining 12 Ω open-loop output resistance and ±13.5 V swing into 1 kΩ. Power supply rejection ratio exceeds 70 dB across ±5 V to ±15 V dual supplies, ensuring robustness against supply noise in mixed-signal environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-signal BW | 180 MHz (−3 dB, G = 1, ±15 V) - supports full HD baseband video and fast pulse amplification without roll-off |
| Slew rate | 400 V/µs (±15 V) - enables clean reproduction of >100 MHz square waves with minimal edge distortion |
| Settling time | 40 ns to 0.1% (5-V step) - meets timing-critical sampling and multiplexed analog acquisition requirements |
| Differential gain/phase | 0.02% / 0.02° (NTSC, G = 2, ±15 V) - preserves color fidelity in professional video transmission |
| THD | −72 dBc @ 1 MHz - ensures low intermodulation in RF IF stages and high-fidelity signal chains |
| Supply range | ±4.5 V to ±16.5 V dual or 9–33 V single - accommodates legacy ±15 V systems and modern low-voltage industrial rails |
| Quiescent current | 7.8 mA per channel (±15 V) - balances speed and power for thermally constrained PCBs |
Pinout & Package
THS4061CD is housed in an 8-pin SOIC (D) package with standard 1.27 mm pitch, compatible with automated assembly and IPC-7351B footprints. Thermal performance is rated at 740 mW at TA ≤ 25°C, derating to 475 mW at 70°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NULL) | Offset null adjust | Connects to external potentiometer wiper for fine-tuning input offset voltage; unused pins must be left unconnected or tied to VCC− |
| 2 (IN−) | Inverting input | High-impedance node (1 MΩ) with 2 pF capacitance; requires shortest possible trace to minimize parasitic feedback |
| 3 (IN+) | Noninverting input | Matches IN− in CMRR (70–110 dB); common-mode range extends to ±14.1 V under ±15 V supply |
| 4 (VCC−) | Negative supply | Must be decoupled with 0.1 µF ceramic + 6.8 µF tantalum; ground plane removal recommended beneath this pin |
| 5 (NC) | No internal connection | Electrically isolated; no routing or thermal pad required |
| 6 (OUT) | Amplifier output | Capable of sourcing/sinking 115 mA; series 20 Ω resistor required for >10 pF capacitive loads to prevent ringing |
| 7 (VCC+) | Positive supply | Decoupling identical to VCC−; shared tantalum acceptable if local 0.1 µF ceramics are placed within 2.5 mm |
| 8 (NULL) | Offset null adjust | Paired with Pin 1; forms balanced nulling network-critical for DC-coupled precision video paths |
Key Features
| Feature | Design Value |
|---|---|
| Unity-gain stable | Operates without external compensation in G = +1 or G = −1 configurations-reduces BOM count and layout complexity |
| 75 MHz 0.1 dB flatness | Maintains amplitude accuracy across entire NTSC/PAL luminance band, eliminating post-amplifier equalization |
| PowerPAD-compatible variants | SOIC-8 footprint matches DGN (HVSSOP) and FK (LCCC) packages-enables thermal upgrade path without layout redesign |
| Low distortion at high frequency | −72 dBc THD at 1 MHz allows use in IF amplifiers where harmonic mixing degrades receiver sensitivity |
| Wide supply flexibility | Supports ±5 V instrumentation and ±15 V legacy test equipment-reduces need for multiple op-amp families |
Applications
| Video Line Driver | High-Speed Data Acquisition |
|---|---|
Use Scenario: Driving 75 Ω coaxial cable in SD/HD broadcast camera signal chains with DC coupling. IC Role / Device Role / Timing Role: Single-ended buffer amplifier configured as G = 2 line driver with termination matching. Use Value: 0.02% differential gain error preserves chroma saturation; 75 MHz 0.1 dB flatness avoids luminance tilt in 1080i signals. | Use Scenario: Amplifying outputs of 12-bit ADCs in oscilloscope front-ends before digitization. IC Role / Device Role / Timing Role: High-fidelity gain block between sensor interface and sampling circuitry. Use Value: 40 ns settling to 0.1% ensures accurate capture of fast transients; 180 MHz bandwidth prevents aliasing in undersampled systems. |
| Medical Imaging Signal Chain | Communications Baseband Amplifier |
Use Scenario: Conditioning ultrasound echo return signals prior to logarithmic compression and digitization. IC Role / Device Role / Timing Role: Low-noise, low-distortion gain stage in analog beamformer ASIC interface. Use Value: 14.5 nV/√Hz input voltage noise minimizes SNR degradation; ±13.5 V output swing drives 1 kΩ ADC inputs fully. | Use Scenario: Amplifying I/Q baseband signals in software-defined radio transceivers before DAC interpolation. IC Role / Device Role / Timing Role: Final-stage reconstruction filter driver with precise amplitude control. Use Value: −72 dBc THD at 1 MHz suppresses adjacent-channel interference; PSRR > 70 dB rejects digital supply noise coupling. |
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 |
|---|---|---|---|
| THS3091D | Higher slew rate (2000 V/µs), lower bandwidth (120 MHz), higher quiescent current (10.5 mA) | Better for pulse amplification with extreme edge fidelity; less suitable for wideband video flatness | Select THS3091D when edge speed dominates over amplitude flatness and power budget allows |
| LMH6629MA | Lower noise (1.4 nV/√Hz), narrower bandwidth (800 MHz small-signal but unstable at G = 1), no offset null pins | Optimized for low-noise preamp stages; requires external compensation for unity gain | Choose LMH6629MA for ultra-low-noise sensor interfaces where stability at G = 1 is not required |
Compared with THS3091D and LMH6629MA, the THS4061CD provides the optimal balance of bandwidth flatness, video-grade linearity, and unity-gain stability in a standard SOIC-8 package-making it uniquely suited for cost-sensitive, high-fidelity analog signal routing where layout simplicity and proven video performance are critical.
Availability
THS4061CD is available at Aetrix Electronics and suitable for video line driving, high-speed data acquisition, and medical imaging signal conditioning requiring stable component supply, long-term obsolescence management, and TI-authorized traceability.
Supply support for THS4061CD 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 op-amp innovation.
The THS4061CD belongs to TI's high-speed voltage-feedback op-amp product line, engineered specifically for demanding analog signal integrity applications including broadcast video, test equipment, and real-time imaging systems.
FAQ
What is the maximum operating temperature range for the THS4061CD?
The THS4061CD is specified for operation from 0°C to 70°C (C-suffix). Its absolute maximum junction temperature is 150°C, and thermal derating begins above 25°C at 6 mW/°C for the SOIC-8 package. At 70°C ambient, the device maintains full electrical performance with 475 mW power dissipation capability-sufficient for typical video line driver loads drawing <100 mA.
Does the THS4061CD require external compensation for unity-gain stability?
No, the THS4061CD is internally compensated for unity-gain stability in both inverting and noninverting configurations. The datasheet confirms stability at all gains without external components. However, for optimal settling behavior and minimal ringing with fast edges, TI recommends using a 270 Ω feedback resistor in G = +1 applications-as validated in Figure 27 of the THS4061CD datasheet.
Can the THS4061CD drive a 75 Ω coaxial cable directly?
Yes, the THS4061CD can drive 75 Ω loads directly when configured as a G = 2 line driver with proper source termination. Its 115 mA output current capability and ±3.5 V swing into 150 Ω (per datasheet Table 5) scale to ±2.6 V into 75 Ω-meeting SMPTE 259M voltage compliance. For best EMI suppression and impedance matching, place a 75 Ω series resistor at the output pin per Figure 28.
What is the purpose of Pins 1 and 8 (NULL) on the THS4061CD?
Pins 1 and 8 on the THS4061CD are offset null terminals used to adjust input offset voltage via an external potentiometer. Connect a 10 kΩ potentiometer across Pins 1 and 8, with its wiper tied to VCC−, as shown in Figure 26 of the THS4061CD datasheet. This feature enables sub-mV DC precision in video DC restoration and other zero-reference analog paths.
How does the THS4061CD compare to the THS4061ID in terms of performance?
The THS4061CD and THS4061ID share identical electrical specifications except for operating temperature range: THS4061CD is rated 0°C to 70°C, while THS4061ID extends to −40°C to 85°C. Both use the same SOIC-8 (D) package, pinout, and AC/DC parameters-including 180 MHz bandwidth, 400 V/µs slew rate, and 0.02% differential gain error. No performance trade-offs exist between the two variants beyond temperature grading.
THS4061CD 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:
- Voltage Feedback
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 400V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 180 MHz
- Current - Input Bias:
- 3 µA
- Voltage - Input Offset:
- 2.5 mV
- Current - Supply:
- 7.8mA
- Current - Output / Channel:
- 115 mA
- Voltage - Supply Span (Min):
- 9 V
- Voltage - Supply Span (Max):
- 33 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
THS4061CD FAQ
1.How can I place an order for THS4061CD through Aetrix?
Please submit a Request for Quotation (RFQ) for THS4061CD 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 THS4061CD reliable?
The price and inventory of THS4061CD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for THS4061CD is usually 5 days.
3.What payment methods are accepted for THS4061CD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for THS4061CD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for THS4061CD?
THS4061CD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your THS4061CD 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 THS4061CD?
For technical support, including THS4061CD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your THS4061CD requirements.
6.How does Aetrix verify that THS4061CD is sourced from the original manufacturer or authorized distributors?
All THS4061CD 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 THS4061CD meets industry standards.
7.What is the process for return or replacement of THS4061CD?
All THS4061CD units undergo pre-shipment inspection (PSI). If there is an issue with THS4061CD, 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 THS4061CD part is unused and in its original packaging.
Return procedure for THS4061CD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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