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Texas Instruments THS3110CDG4
- Part No.:
- THS3110CDG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
THS3110CDG4.pdf
- Description:
- IC OPAMP CFA 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,979
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Product details
Overview
THS3110CDG4 from Texas Instruments is a low-noise, high-voltage current-feedback operational amplifier optimized for video distribution and high-speed analog signal routing. It delivers 90 MHz small-signal bandwidth (G = 2, RL = 100 Ω), 1300 V/μs slew rate, ±15 V supply operation, 260 mA output drive, and <0.013% differential gain error with PAL/NTSC video loads. It serves as a precision video buffer in broadcast-grade distribution amplifiers.
For engineers reviewing the THS3110CDG4 datasheet, THS3110CDG4 pinout, THS3110CDG4 application, or THS3110CDG4 equivalent, key selection criteria include its power-down capability (PD pin), 75-Ω transmission line drive compliance, differential phase/gain performance across multiple 150-Ω loads, and SOIC-8 PowerPAD™ thermal performance under ±15 V operation.
Technical Context
The THS3110CDG4 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 supports stable operation with capacitive loads up to 100 pF when using recommended RISO compensation.
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 features matched input bias currents (1–6 μA), 3 nV/√Hz voltage noise, and 2-pA/√Hz noninverting current noise - critical for low-distortion video signal integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-signal BW | 90 MHz at G = 2, RL = 100 Ω - enables full HD video bandwidth without gain-dependent roll-off |
| Slew rate | 1300 V/μs at G = 2, VO = 8 VPP, RL = 100 Ω - supports fast transient response for composite sync pulses |
| Differential gain | 0.013% (PAL), 0.011% (NTSC) - meets SMPTE RP 168 and ITU-R BT.601 broadcast accuracy requirements |
| Differential phase | 0.033° (PAL), 0.029° (NTSC) - preserves chroma timing fidelity across 8× 150-Ω video loads |
| Output current | ±260 mA (RL = 25 Ω) - drives multiple 75-Ω coaxial lines simultaneously without external buffers |
| Power-down IQ | 270 μA max (PD ≥ REF + 2 V) - reduces system standby power in multi-channel video routers |
| Input voltage noise | 3 nV/√Hz - minimizes added noise in baseband analog video paths |
Pinout & Package
THS3110CDG4 is housed in an 8-pin SOIC package (D) with exposed PowerPAD™ thermal pad on underside, requiring solder connection to PCB ground plane for thermal management per TI SLMA002 guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NC) | No internal connection | Unused pin; must be left floating or tied to ground per layout best practice |
| 2 (VIN−) | Inverting input | Low-impedance node for feedback network; accepts current-driven signals in CFB topology |
| 3 (VIN+) | Noninverting input | High-impedance (41 MΩ), low-capacitance (0.4 pF) node for signal source coupling |
| 4 (VS−) | Negative supply rail | Connects to −15 V; supports rail-to-rail input common-mode range down to ±12.5 V |
| 5 (NC) | No internal connection | Unused pin; no internal bond wire; electrically isolated |
| 6 (VS+) | Positive supply rail | Connects to +15 V; PSRR > 69 dB ensures immunity to supply ripple |
| 7 (VOUT) | Amplifier output | Capable of ±13.4 V swing into 100 Ω; designed for direct 75-Ω cable termination |
| 8 (PD) | Power-down control | Active-high logic input; defaults ON if unconnected; requires REF pin reference for threshold |
Key Features
| Feature | Design Value |
|---|---|
| Power-down function | Reduces quiescent current by 94% (4.8 mA → 270 μA), enabling dynamic channel gating in video matrix switchers |
| 75-Ω transmission line drive | Optimized output stage delivers <0.03° differential phase error across 8× 150-Ω loads - compliant with broadcast video distribution standards |
| Current-feedback architecture | Provides flat 90-MHz bandwidth at G = 2 and 66-MHz at G = 10 - eliminates gain-bandwidth tradeoff in multi-gain video systems |
| Low distortion | −52 dBc 2nd harmonic (10 MHz, 2 VPP) - preserves luminance/chroma separation in SD/HD composite and component video |
| Thermal-enhanced SOIC | PowerPAD™ package achieves θJA = 95°C/W (JEDEC low-K board) - sustains 1.05 W dissipation at +25°C ambient |
Applications
| Broadcast Video Distribution | Professional Camera Signal Routing |
|---|---|
|
Use Scenario: Distributing NTSC/PAL composite video from a single source to eight monitors in studio control rooms. IC Role / Device Role / Timing Role: High-current video buffer driving parallel 75-Ω coaxial cables with minimal gain/phase error. Use Value: Maintains <0.013% differential gain and <0.033° differential phase across all eight outputs - meets SMPTE RP 168 specification for broadcast monitoring. |
Use Scenario: Routing uncompressed HD-SDI baseband signals between camera heads and vision mixers in live production trucks. IC Role / Device Role / Timing Role: Line driver conditioning analog component YPbPr signals prior to cable transmission. Use Value: Delivers 1300 V/μs slew rate and 90 MHz bandwidth to preserve edge integrity of 1080i/720p sync pulses and active video. |
| Medical Imaging Display Interface | Test Equipment Video Signal Generation |
|
Use Scenario: Driving high-resolution analog RGB signals from MRI/CT image processors to diagnostic displays. IC Role / Device Role / Timing Role: Precision gain-of-2 buffer ensuring pixel-level color fidelity over long cable runs. Use Value: 3-nV/√Hz input voltage noise and <0.01% gain error prevent grayscale banding and chromatic artifacts in medical grayscale rendering. |
Use Scenario: Generating calibrated video test patterns in ATE systems for display calibration and conformance testing. IC Role / Device Role / Timing Role: Low-distortion, high-slew-rate output stage producing precise ramp, pulse, and sine waveforms. Use Value: −68 dBc 3rd harmonic distortion at 10 MHz enables accurate measurement of display gamma, uniformity, and temporal response. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed video amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| THS3111CDG4 | No power-down pin; identical AC/DC specs and pinout except PD/REF pins omitted | Preferred where continuous operation is required and power gating adds complexity | Select THS3111CDG4 for fixed-function video paths without dynamic channel enable/disable needs |
| LMH6702MF/NOPB | Higher 1.7 GHz unity-gain bandwidth but lower output current (120 mA); no integrated power-down | Better suited for RF IF amplification than multi-load video distribution | Choose LMH6702MF/NOPB only when >500 MHz small-signal bandwidth is mandatory and load count ≤2 |
Compared with THS3110CDG4, THS3111CDG4 removes power management overhead while retaining identical video fidelity; LMH6702MF/NOPB trades output drive and multi-load phase accuracy for raw bandwidth - making THS3110CDG4 uniquely balanced for broadcast-grade distribution.
Availability
THS3110CDG4 is available at Aetrix Electronics and suitable for broadcast infrastructure, medical imaging display interfaces, and professional video routing equipment requiring stable component supply across extended product lifecycles.
Supply support for THS3110CDG4 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 THS3110CDG4 belongs to TI's high-speed current-feedback amplifier product line, engineered specifically for demanding video, instrumentation, and wideband analog signal routing applications requiring low distortion and high output drive.
FAQ
What is the maximum number of 75-Ω video loads the THS3110CDG4 can drive while maintaining SMPTE-compliant differential phase?
The THS3110CDG4 maintains <0.033° differential phase error across up to eight 150-Ω loads (equivalent to sixteen 75-Ω terminations in parallel configuration), as verified in Figure 30 of the SLOS422E datasheet. This performance holds at ±15 V supply, G = 2, and 40 IRE NTSC/PAL test conditions - meeting SMPTE RP 168 for broadcast monitoring applications.
Does the THS3110CDG4 require external compensation when driving 100-pF capacitive loads?
Yes - the THS3110CDG4 requires series isolation resistor (RISO) compensation when driving >10 pF capacitive loads. Per Figure 8 of the datasheet, a 54.9-Ω RISO is recommended for 22-pF load; 100-pF load requires 54.9 Ω per TI's validated design. Omitting RISO risks peaking and instability in the closed-loop response.
How does the power-down function of the THS3110CDG4 behave if the REF pin is unconnected?
If the REF pin is left unconnected, the THS3110CDG4 power-down circuit defaults to enabled state due to internal biasing, causing the amplifier to remain in low-power mode (270 μA IQ). TI specifies REF must be externally tied to a defined voltage between VS– and VS+ – 4 V to ensure predictable PD pin threshold behavior - see Section 7.5 of SLOS422E.
Can the THS3110CDG4 operate from a single +30-V supply instead of dual ±15-V rails?
Yes - the THS3110CDG4 supports single-supply operation from +10 V to +30 V (absolute max 33 V), as specified in the Recommended Operating Conditions table. However, input common-mode range shrinks to ±2.8 V at ±5 V supply and ±12.5 V at ±15 V; single +30 V operation requires level-shifting circuitry to keep inputs within VS– + 1.5 V to VS+ – 1.5 V.
What thermal derating applies to the THS3110CDG4 in SOIC-8 PowerPAD™ package at 85°C ambient?
At TA = +85°C, the THS3110CDG4's maximum continuous power dissipation is 421 mW (per Dissipation Ratings Table), corresponding to ~280 mW usable output power into 100 Ω. This requires thermal vias under the PowerPAD™ and ≥1 in² copper pour to maintain TJ ≤ +125°C - exceeding this limit triggers permanent reliability degradation per TI SLMA002 guidelines.
THS3110CDG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
THS3110CDG4 FAQ
1.How can I place an order for THS3110CDG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for THS3110CDG4 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 THS3110CDG4 reliable?
The price and inventory of THS3110CDG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for THS3110CDG4 is usually 5 days.
3.What payment methods are accepted for THS3110CDG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for THS3110CDG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for THS3110CDG4?
THS3110CDG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your THS3110CDG4 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 THS3110CDG4?
For technical support, including THS3110CDG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your THS3110CDG4 requirements.
6.How does Aetrix verify that THS3110CDG4 is sourced from the original manufacturer or authorized distributors?
All THS3110CDG4 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 THS3110CDG4 meets industry standards.
7.What is the process for return or replacement of THS3110CDG4?
All THS3110CDG4 units undergo pre-shipment inspection (PSI). If there is an issue with THS3110CDG4, 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 THS3110CDG4 part is unused and in its original packaging.
Return procedure for THS3110CDG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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