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Texas Instruments THS3110IDR
- Part No.:
- THS3110IDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
THS3110IDR.pdf
- Description:
- IC OPAMP CFA 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,497
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Product details
Overview
THS3110IDR from Texas Instruments is a low-noise, high-voltage current-feedback operational amplifier optimized for video distribution and high-speed analog signal conditioning. It delivers 260 mA output current drive, 1300 V/μs slew rate at ±15 V supply, 90 MHz small-signal bandwidth (G = 2, RL = 100 Ω), and <0.013% differential gain error with PAL/NTSC video loads - enabling multi-drop 75-Ω transmission line driving in broadcast and professional video systems.
For engineers reviewing the THS3110IDR datasheet, THS3110IDR pinout, THS3110IDR application, or THS3110IDR equivalent, this page provides verified technical context, validated pin functions, real-world video and capacitive-load driving use cases, and two confirmed alternative parts with documented functional trade-offs for industrial-grade high-speed amplification.
Technical Context
The THS3110IDR uses 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 MΩ (min) and 0.15 Ω closed-loop output impedance support stable driving of reactive and distributed loads up to 8× 150-Ω video terminations.
It integrates a dedicated power-down pin (PD) that reduces quiescent current from 4.8 mA to 270 μA while maintaining defined REF pin voltage range (VS– to VS+ – 4 V). The device operates across ±5 V to ±15 V dual supplies and features rail-to-rail output swing (±13.4 V into 100 Ω at ±15 V), making it suitable for both legacy analog video and modern high-slew-rate buffer applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-signal BW | 90 MHz at G = 2, RL = 100 Ω - supports full HD video bandwidth without gain peaking |
| Slew rate | 1300 V/μs at ±15 V, RL = 100 Ω - enables clean 8-VPP output steps at >10 MHz |
| Output current | ±260 mA (min) into 25 Ω - drives multiple 75-Ω coaxial lines or FET gates directly |
| Differential gain | 0.013% (PAL), 0.011% (NTSC) - meets SMPTE 253M broadcast accuracy requirements |
| Input voltage noise | 3 nV/√Hz - preserves SNR in low-level analog signal chains before ADCs or video DACs |
| Power-down current | 270 μA (max) - reduces system standby power in multi-channel video routers |
| Supply range | ±5 V to ±15 V - interoperable with legacy ±12 V and modern ±15 V analog subsystems |
Pinout & Package
THS3110IDR is housed in an SOIC-8 (D) package with PowerPAD™ thermal enhancement. The exposed thermal pad must be soldered to a PCB copper plane for reliable operation above 200 mW dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NC) | No internal connection | Unused pin; leave floating or ground per layout best practice |
| 2 (VIN−) | Inverting input | Low-impedance node for feedback network; sets closed-loop gain with RF |
| 3 (VIN+) | Noninverting input | High-impedance (41 MΩ), low-capacitance (0.4 pF) input for signal source coupling |
| 4 (VS−) | Negative supply | Connect to −5 V to −15 V rail; supports symmetrical or asymmetrical supplies |
| 5 (NC) | No internal connection | Unused pin; no internal bond wire |
| 6 (VS+) | Positive supply | Connect to +5 V to +15 V rail; PSRR ≥ 69 dB minimizes supply ripple coupling |
| 7 (VOUT) | Amplifier output | Capable of ±13.4 V swing into 100 Ω; 0.15 Ω closed-loop impedance ensures load stability |
| 8 (PD) | Power-down control | Active-high logic: ≥REF + 2 V disables amplifier; ≤REF + 0.8 V enables (REF = VS− to VS+ − 4 V) |
Key Features
| Feature | Design Value |
|---|---|
| Current-feedback architecture | Bandwidth remains stable across gains (90 MHz at G = 2, 87 MHz at G = 5), unlike voltage-feedback op-amps |
| Power-down function | Reduces quiescent current by 94% (4.8 mA → 270 μA) with 4 μs turn-on delay - ideal for channel gating in video switchers |
| Video-optimized distortion performance | 0.029° differential phase error (NTSC) and 0.011% differential gain error ensure color fidelity across 8 video loads |
| High-output-current drive | 260 mA sourcing/sinking capability eliminates need for external buffer stages when driving 75-Ω coax or capacitive loads |
| Thermally enhanced SOIC-8 | PowerPAD™ package lowers θJA to 95°C/W - enables 1.05 W power dissipation at TA = +25°C with proper PCB copper area |
Applications
| Professional Video Distribution | Broadcast Camera Signal Conditioning |
|---|---|
|
Use Scenario: Distributing composite NTSC/PAL video from a single source to 4–8 monitors or recording devices over 75-Ω coaxial cables. IC Role / Device Role / Timing Role: High-current video buffer with minimal differential gain/phase distortion to preserve color accuracy across all outputs. Use Value: Maintains <0.013% differential gain error even with 8× 150-Ω loads - eliminates need for post-amplifier calibration or external equalization. |
Use Scenario: Amplifying and buffering analog RGB or YPbPr signals inside broadcast-grade camera heads prior to encoding or transmission. IC Role / Device Role / Timing Role: Low-noise, high-slew-rate driver ensuring sub-1-ns rise/fall times and <8 ns settling to 0.1% for pixel-clock-aligned signals. Use Value: 1300 V/μs slew rate and 90 MHz bandwidth support 1080p60 analog video without edge ringing or chroma delay skew. |
| Capacitive Load Driver | High-Speed Pin Driver |
|
Use Scenario: Driving long PCB traces, LCD column drivers, or piezoelectric actuators presenting >1000 pF capacitance with minimal overshoot. IC Role / Device Role / Timing Role: Stable unity-gain buffer with recommended RISO compensation (e.g., 39.2 Ω for 47 pF load) to prevent oscillation. Use Value: Closed-loop output impedance of 0.15 Ω and built-in stability margins allow direct driving of 22–100 pF loads without external isolation resistors. |
Use Scenario: Providing fast, high-current pulses to gate terminals of power MOSFETs or IGBTs in motor control or SMPS gate drivers. IC Role / Device Role / Timing Role: High-output-current, low-impedance source/sink stage delivering rapid voltage transitions to capacitive gate loads. Use Value: ±260 mA output current and 1300 V/μs slew rate reduce MOSFET switching time, lowering conduction losses in 100-kHz+ switching converters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed current-feedback amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| THS3111IDR | No power-down pin; otherwise identical AC/DC specs, pinout, and package | Preferred where always-on operation is required and power gating adds complexity | Select THS3111IDR when system-level power sequencing eliminates need for per-amplifier shutdown control |
| OPA695IDBVR | Higher 1.7-GHz gain-bandwidth, lower 1.6 nV/√Hz noise, but only ±120 mA output drive and no power-down | Better for RF IF amplification or ultra-low-noise preamp stages; insufficient for multi-load video distribution | Choose OPA695IDBVR only for bandwidth-critical, low-capacitance signal paths - not for 75-Ω video or high-current loads |
Compared with THS3110IDR, THS3111IDR removes power-down functionality while retaining identical video performance and drive strength, whereas OPA695IDBVR trades output current and video-optimized distortion for higher bandwidth and lower noise - making THS3110IDR uniquely suited for industrial video routing and high-current analog buffering.
Availability
THS3110IDR is available at Aetrix Electronics and suitable for professional video infrastructure, broadcast equipment manufacturing, and industrial analog signal conditioning requiring stable component supply across extended temperature ranges (–40°C to +85°C).
Supply support for THS3110IDR 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 THS3110IDR belongs to TI's high-speed current-feedback amplifier product line, engineered specifically for demanding video distribution, test equipment, and high-current analog interface applications where bandwidth, drive strength, and video fidelity are critical.
FAQ
What is the operating temperature range for the THS3110IDR?
The THS3110IDR is rated for industrial operation from –40°C to +85°C ambient temperature. This range is validated across all key parameters including small-signal bandwidth (90 MHz min), differential gain (<0.015% PAL), and output current (≥175 mA into 25 Ω), ensuring reliability in broadcast enclosures and outdoor video equipment.
Does the THS3110IDR require external compensation for driving capacitive loads?
Yes - the THS3110IDR requires an external series isolation resistor (RISO) between the output and capacitive load to maintain stability. For example, 39.2 Ω is recommended for 47 pF, 28 Ω for 100 pF, and 54.9 Ω for 10–22 pF loads. These values are specified in the THS3110IDR datasheet Figure 8 and enable stable operation without peaking or oscillation.
How does the power-down feature of the THS3110IDR function?
The THS3110IDR power-down pin (Pin 8) is active-high: applying ≥REF + 2 V disables the amplifier and reduces quiescent current to 270 μA max, while ≤REF + 0.8 V enables normal operation. REF voltage range is VS– to (VS+ – 4 V); for ±15 V supplies, REF spans –15 V to +11 V, allowing flexible logic-level interfacing.
Can the THS3110IDR drive 75-Ω video lines directly without a series resistor?
Yes - the THS3110IDR is explicitly characterized for 75-Ω video distribution, with differential gain/phase plots (Figures 29–30) showing performance with up to eight 150-Ω loads (equivalent to parallel 75-Ω terminations). Its 0.15 Ω closed-loop output impedance and ±260 mA drive capability eliminate the need for external series termination resistors in standard configurations.
What is the maximum safe supply voltage for the THS3110IDR?
The absolute maximum supply voltage for the THS3110IDR is ±16 V (32 V total), but the recommended operating range is ±5 V to ±15 V. Operation at ±16 V exceeds specification limits and risks parametric shift or reduced reliability; sustained use at ±15 V is fully characterized and supported across –40°C to +85°C.
THS3110IDR 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:
- Current Feedback
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 1300V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 100 MHz
- Current - Input Bias:
- 1.5 µA
- Voltage - Input Offset:
- 3 mV
- Current - Supply:
- 4.8mA
- Current - Output / Channel:
- 260 mA
- Voltage - Supply Span (Min):
- 10 V
- Voltage - Supply Span (Max):
- 30 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
THS3110IDR FAQ
1.How can I place an order for THS3110IDR through Aetrix?
Please submit a Request for Quotation (RFQ) for THS3110IDR 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 THS3110IDR reliable?
The price and inventory of THS3110IDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for THS3110IDR is usually 5 days.
3.What payment methods are accepted for THS3110IDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for THS3110IDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for THS3110IDR?
THS3110IDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your THS3110IDR 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 THS3110IDR?
For technical support, including THS3110IDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your THS3110IDR requirements.
6.How does Aetrix verify that THS3110IDR is sourced from the original manufacturer or authorized distributors?
All THS3110IDR 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 THS3110IDR meets industry standards.
7.What is the process for return or replacement of THS3110IDR?
All THS3110IDR units undergo pre-shipment inspection (PSI). If there is an issue with THS3110IDR, 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 THS3110IDR part is unused and in its original packaging.
Return procedure for THS3110IDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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