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Texas Instruments THS4061IDR
- Part No.:
- THS4061IDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
THS4061IDR.pdf
- Description:
- IC VOLTAGE FEEDBACK 1 CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,005
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Product details
Overview
THS4061IDR from Texas Instruments is a single-channel, high-speed voltage-feedback operational amplifier optimized for video, imaging, and communication signal conditioning. It delivers 180 MHz bandwidth (G = 1), 400 V/µs slew rate, 40 ns settling time (0.1%), ±11.5 V output swing (RL = 250 Ω), and 0.02% differential gain error - enabling precision analog front-end design in broadcast-grade video line drivers and high-fidelity data acquisition systems.
For engineers reviewing the THS4061IDR datasheet, THS4061IDR pinout, THS4061IDR application, or THS4061IDR equivalent, this page provides verified electrical specifications, SOIC-8 package layout, video-optimized performance metrics, thermal derating guidance, and validated alternative options for industrial and professional AV signal chain design.
Technical Context
The THS4061IDR employs a dielectrically isolated complementary bipolar process with GHz fT transistors to achieve wideband stability across all gains in both inverting and noninverting configurations. Its internal frequency compensation ensures unity-gain stability while preserving 180 MHz small-signal bandwidth and 75 MHz 0.1 dB flatness.
Designed for demanding analog signal paths, it features low distortion (−72 dBc THD at 1 MHz), excellent DC precision (±8 mV input offset voltage, 15 µV/°C drift), and robust output drive (115 mA typ, 150 mA absolute max) into 20 Ω loads - supporting active termination and capacitive load isolation via series output resistors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-signal BW (−3 dB) | 180 MHz at G = 1, ±15 V supply - supports full HD video baseband and fast pulse amplification without gain peaking. |
| Slew rate | 400 V/µs at ±15 V - enables clean reproduction of >100 MHz square waves with minimal edge distortion. |
| Settling time (0.1%) | 40 ns for 5-V step - critical for high-speed data acquisition and multiplexed ADC driver applications. |
| Differential gain/phase | 0.02% / 0.02° at NTSC, ±15 V - meets SMPTE 253M broadcast video fidelity requirements. |
| Output current | 115 mA typical into 20 Ω - drives 75 Ω coaxial lines directly or powers multiple downstream buffers. |
| Supply range | ±4.5 V to ±16.5 V dual or 9 V to 33 V single - accommodates legacy ±12 V and modern low-voltage industrial rails. |
| Input offset voltage | ±8 mV max over −40°C to +85°C - maintains DC accuracy in temperature-varying sensor interfaces. |
Pinout & Package
THS4061IDR is supplied in an 8-pin SOIC (D) package with standard JEDEC MS-012AC footprint (5.3 mm × 6.2 mm, 1.27 mm pitch). Thermal pad is not present; power dissipation relies on PCB copper area under leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NULL) | Offset null adjust | Connects to potentiometer wiper for manual input offset trimming; unused pins must be left open or tied to VCC−. |
| 2 (IN−) | Inverting input | High-impedance node requiring short trace routing and guard ring to minimize parasitic capacitance and phase shift. |
| 3 (IN+) | Noninverting input | DC-coupled reference point; matched impedance to IN− improves CMRR above 10 kHz. |
| 4 (VCC−) | Negative supply rail | Must be decoupled with 0.1 µF ceramic + 6.8 µF tantalum placed ≤2.5 mm from pin per TI layout guidelines. |
| 5 (NC) | No internal connection | Not bonded; electrically isolated - no routing or grounding required. |
| 6 (OUT) | Amplifier output | Capable of sourcing/sinking 115 mA; series 20–75 Ω resistor required for >10 pF capacitive loads to prevent oscillation. |
| 7 (VCC+) | Positive supply rail | Same decoupling as VCC−; shared bulk capacitor allowed only if adjacent channels operate synchronously. |
| 8 (NULL) | Offset null adjust | Paired with Pin 1; connects to opposite end of nulling potentiometer - forms balanced offset cancellation network. |
Key Features
| Feature | Design Value |
|---|---|
| Unity-gain stable architecture | Operates reliably at G = 1 without external compensation - eliminates risk of instability in video gain-of-one buffers. |
| Professional video performance | 0.02% differential gain and 0.02° phase error at NTSC ensure broadcast-compliant color fidelity without post-processing. |
| High-output drive capability | 115 mA continuous output current enables direct driving of 75 Ω transmission lines or parallel termination networks. |
| Low harmonic distortion | −72 dBc THD at 1 MHz allows use in high-fidelity audio preamps and RF IF stages where spectral purity is critical. |
| Wide supply flexibility | Supports ±4.5 V to ±16.5 V dual supplies - compatible with legacy ±12 V systems and modern ±5 V embedded designs. |
Applications
| Video Line Driver | Broadcast Camera Signal Chain |
|---|---|
Use Scenario: Driving composite video signals over 100 m coaxial cable in studio production switchers. IC Role / Device Role / Timing Role: Unity-gain buffer with 75 Ω source termination and DC restoration. Use Value: Maintains 0.02% differential gain and 0.02° phase error across NTSC/PAL standards, eliminating color shift during long-haul transmission. | Use Scenario: Amplifying CCD/CMOS sensor outputs in 4K broadcast cameras before ADC sampling. IC Role / Device Role / Timing Role: High-speed, low-noise gain stage preceding 12-bit/60 MSPS ADC. Use Value: 40 ns settling time ensures accurate pixel-level sampling; 14.5 nV/√Hz input noise preserves dynamic range in low-light imaging. |
| High-Speed Data Acquisition | Medical Ultrasound Front-End |
Use Scenario: Buffering multiplexed analog inputs in automated test equipment with 100 kSPS throughput. IC Role / Device Role / Timing Role: Fast-settling driver for SAR ADC reference and input channels. Use Value: 40 ns 0.1% settling guarantees full-scale accuracy across 16-channel scan cycles without dead-time penalties. | Use Scenario: Conditioning echo return signals in portable ultrasound systems operating at 5–15 MHz carrier frequencies. IC Role / Device Role / Timing Role: Low-distortion gain block in receive path before variable-gain amplifier and filter stages. Use Value: −72 dBc THD at 10 MHz prevents harmonic artifacts from masking weak tissue echoes in B-mode imaging. |
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 |
|---|---|---|---|
| THS4031IDR | 100 MHz bandwidth, lower 14.5 nV/√Hz noise, 10 mA quiescent current - optimized for low-noise over raw speed. | Better suited for sensor front-ends where SNR dominates over bandwidth; insufficient for >100 MHz video reconstruction. | Select THS4031IDR when system bandwidth requirement is ≤100 MHz and input-referred noise must be minimized below 15 nV/√Hz. |
| OPA695IDBVR | 1.7 GHz bandwidth, 4300 V/µs slew rate, but higher 2.5 mA quiescent current per channel and no offset null pins. | Enables >500 MHz RF/IF amplification but lacks video-optimized differential gain/phase specs and requires external compensation. | Choose OPA695IDBVR only for ultra-wideband applications beyond 500 MHz where THS4061IDR's 180 MHz limit is exceeded. |
Compared with THS4031IDR and OPA695IDBVR, THS4061IDR uniquely balances 180 MHz bandwidth, broadcast-grade video linearity (0.02%/0.02°), and offset-null capability - making it the optimal choice for professional video infrastructure and mixed-signal systems requiring both speed and DC precision.
Availability
THS4061IDR is available at Aetrix Electronics and suitable for video line driving, broadcast camera signal conditioning, and high-speed data acquisition requiring stable component supply across −40°C to +85°C industrial temperature range.
Supply support for THS4061IDR 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 over 90 years of innovation in high-performance signal chain solutions.
The THS4061IDR belongs to TI's high-speed operational amplifier product line, engineered specifically for professional video, medical imaging, and communications infrastructure where bandwidth, linearity, and output drive must coexist without compromise.
FAQ
What is the maximum safe supply voltage for THS4061IDR?
The THS4061IDR has an absolute maximum supply voltage rating of ±16.5 V (33 V total). Operation beyond this risks permanent damage. For reliable long-term use, TI specifies recommended operating range as ±4.5 V to ±16.5 V dual supply or 9 V to 33 V single supply. Derating begins at 70°C ambient for SOIC packages - consult the Dissipation Rating Table for thermal limits at elevated temperatures.
Does THS4061IDR require external compensation for unity-gain stability?
No, THS4061IDR is internally compensated for unity-gain stability in both inverting and noninverting configurations. Its frequency compensation ensures unconditional stability at G = 1 without external components. However, for optimal transient response with minimal ringing, TI recommends using a 270 Ω feedback resistor in noninverting unity-gain setups - as documented in Figure 27 of the SLOS234E datasheet.
Can THS4061IDR drive 75 Ω coaxial cables directly?
Yes, THS4061IDR can drive 75 Ω coaxial cables directly when configured as a line driver with G = 2 and proper source termination. Its 115 mA output current capability and ±11.5 V swing (at RL = 250 Ω) support 1 VPP into 75 Ω with headroom. TI's application schematic (Figure 27) shows a 2 kΩ/75 Ω resistive divider achieving G = 2 while maintaining impedance match - ensuring minimal reflections and broadcast-compliant signal integrity.
What is the purpose of Pins 1 and 8 (NULL) on THS4061IDR?
Pins 1 and 8 on THS4061IDR are offset null terminals used to adjust input offset voltage manually. A 10 kΩ potentiometer is connected between these pins, with its wiper tied to VCC−. This forms a balanced current injection network that cancels residual input offset - critical for DC-coupled precision applications like medical instrumentation or calibrated test equipment where offset drift must be actively suppressed.
How does THS4061IDR perform in capacitive load conditions?
THS4061IDR is sensitive to capacitive loading due to its high-speed internal compensation. For loads >10 pF, TI mandates a series resistor (≥20 Ω) between the output and load to maintain phase margin and prevent oscillation. In 75 Ω video systems, a 75 Ω series resistor simultaneously isolates capacitance and matches source impedance - as shown in Figure 28. Without this resistor, even 20 pF of stray capacitance can induce high-frequency ringing or sustained oscillation.
THS4061IDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
THS4061IDR FAQ
1.How can I place an order for THS4061IDR through Aetrix?
Please submit a Request for Quotation (RFQ) for THS4061IDR 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 THS4061IDR reliable?
The price and inventory of THS4061IDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for THS4061IDR is usually 5 days.
3.What payment methods are accepted for THS4061IDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for THS4061IDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for THS4061IDR?
THS4061IDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your THS4061IDR 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 THS4061IDR?
For technical support, including THS4061IDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your THS4061IDR requirements.
6.How does Aetrix verify that THS4061IDR is sourced from the original manufacturer or authorized distributors?
All THS4061IDR 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 THS4061IDR meets industry standards.
7.What is the process for return or replacement of THS4061IDR?
All THS4061IDR units undergo pre-shipment inspection (PSI). If there is an issue with THS4061IDR, 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 THS4061IDR part is unused and in its original packaging.
Return procedure for THS4061IDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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