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Texas Instruments THS3110CDGNR
- Part No.:
- THS3110CDGNR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
THS3110CDGNR.pdf
- Description:
- IC OPAMP CFA 1 CIRCUIT 8HVSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,601
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Product details
Overview
THS3110CDGNR 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 drive, 1300 V/μs slew rate, 90 MHz small-signal bandwidth (G = 2, RL = 100 Ω), ±15 V supply operation, and features a dedicated power-down pin for standby mode. It is used in broadcast-grade video line drivers driving multiple 75-Ω coaxial loads.
For engineers reviewing the THS3110CDGNR datasheet, THS3110CDGNR pinout, THS3110CDGNR application, or THS3110CDGNR equivalent, key selection criteria include differential gain/phase performance at NTSC/PAL video frequencies, capacitive load drive capability, power-down timing (4 μs turn-on), thermal management via PowerPAD™, and MSOP-8 package compatibility with high-density PCB layouts.
Technical Context
The THS3110CDGNR employs a current-feedback architecture enabling wide bandwidth independent of closed-loop gain, with unity-gain bandwidth of 100 MHz and flat 0.1-dB bandwidth up to 45 MHz (G = 2). Its transimpedance input stage provides low input bias currents (1–6 μA) and ultra-low voltage noise (3 nV/√Hz), critical for preserving SNR in high-fidelity video paths.
It integrates a dedicated power-down pin (PD) referenced to an internal REF pin, allowing quiescent current reduction from 4.8 mA to 270 μA. The device supports dual-supply operation from ±5 V to ±15 V and maintains stable performance into reactive loads, including 150-Ω video terminations and capacitive loads up to 100 pF when paired with recommended RISO isolation resistors.
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 peaking |
| Slew rate | 1300 V/μs at G = 2, VO = 8 VPP - supports fast transient response for composite sync pulses |
| Differential gain error | 0.011% (NTSC), 0.013% (PAL) - meets broadcast-grade video fidelity requirements |
| Differential phase error | 0.029° (NTSC), 0.033° (PAL) - preserves color accuracy across multi-load distribution |
| Output current | ±260 mA into RL = 25 Ω - drives eight 150-Ω video loads simultaneously with <0.3% gain error |
| Power-down current | 270 μA max - reduces system standby power while retaining fast 4 μs wake-up latency |
| Input voltage noise | 3 nV/√Hz - minimizes added noise in low-level analog signal chains |
Pinout & Package
The THS3110CDGNR is housed in an 8-pin MSOP (DGN) package with exposed PowerPAD™ thermal pad, requiring solder connection to a PCB copper plane for thermal dissipation. Pin 1 is marked by a dot; the PowerPAD is electrically isolated and must not be connected to any signal or supply net.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NC) | No internal connection | Unused pin; leave unconnected or tie to ground only if required for mechanical stability |
| 2 (VIN−) | Inverting input | Current-feedback input node; requires matched trace impedance and proper termination to minimize distortion |
| 3 (VIN+) | Noninverting input | Voltage-sensing input; high-impedance (41 MΩ) with 0.4 pF capacitance - sensitive to layout parasitics |
| 4 (VS−) | Negative supply rail | Connect to clean, low-impedance −15 V (or −5 V); decouple locally with ≥1 μF ceramic + 10 μF tantalum |
| 5 (REF) | Power-down reference | Internal reference for PD pin threshold; functional range VS− to (VS+ − 4 V) |
| 6 (PD) | Power-down control | Logic-high (≥REF + 2 V) disables amplifier; logic-low (≤REF + 0.8 V) enables - TTL/CMOS compatible |
| 7 (VS+) | Positive supply rail | Connect to clean, low-impedance +15 V (or +5 V); decouple identically to VS− |
| 8 (VOUT) | Amplifier output | Capable of sourcing/sinking 260 mA; requires series RISO (e.g., 39.2 Ω) for >47 pF capacitive loads |
Key Features
| Feature | Design Value |
|---|---|
| Power-down functionality | Reduces quiescent current from 4.8 mA to 270 μA with 4 μs turn-on delay - enables dynamic power gating in multi-channel video systems |
| Video-optimized distortion performance | Differential gain/phase errors ≤0.013%/0.033° into 150-Ω loads - meets SMPTE RP 168 and ITU-R BT.601 broadcast standards |
| High-output-current drive | ±260 mA into 25 Ω - eliminates need for external buffer stages when driving multiple 75-Ω transmission lines |
| Low-noise transimpedance input | 3 nV/√Hz voltage noise + 2 pA/√Hz noninverting current noise - preserves signal integrity in low-amplitude video signals |
| Thermally enhanced PowerPAD™ | θJA = 58.4°C/W (DGN-8) - enables 685 mW continuous power dissipation at +85°C ambient with proper PCB copper area |
Applications
| Broadcast Video Distribution | Professional Camera Signal Chain |
|---|---|
|
Use Scenario: Driving one SDI source to eight parallel 75-Ω coaxial outputs in a broadcast switcher. IC Role / Device Role / Timing Role: High-current video line driver with gain = 2, maintaining impedance-matched 75-Ω output termination. Use Value: Achieves <0.3% differential gain error across all eight loads at 4.43 MHz (PAL) and 3.58 MHz (NTSC), eliminating color shift. |
Use Scenario: Buffering analog RGBHV signals from camera sensor ADCs before HDMI encoder input. IC Role / Device Role / Timing Role: Low-noise, high-slew-rate driver for 1080p60 pixel clock-aligned analog video paths. Use Value: 1300 V/μs slew rate ensures <1 ns edge jitter on sync pulses; 3-nV/√Hz noise prevents visible grain in dark scenes. |
| Medical Imaging Display Interface | Test Equipment Video Output Stage |
|
Use Scenario: Amplifying high-resolution diagnostic ultrasound video (1280×1024 @ 75 Hz) for display monitor interface. IC Role / Device Role / Timing Role: Wideband gain block with DC-coupled output and minimal group delay variation. Use Value: 90 MHz bandwidth supports full pixel clock harmonics; 0.1-dB flatness to 45 MHz ensures accurate grayscale reproduction. |
Use Scenario: Output stage of arbitrary waveform generator delivering ±10 V video test patterns to DUT inputs. IC Role / Device Role / Timing Role: High-voltage, high-current output amplifier with fast overdrive recovery (<100 ns). Use Value: ±13.4 V output swing into 100 Ω enables full-scale 20 VPP test signals; 260 mA drive handles reactive probe loads. |
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 |
|---|---|---|---|
| THS3111CDGNR | No power-down pin; identical AC/DC specs and pinout except PD/REF pins replaced by NC | Preferred where always-on operation simplifies control logic and board space allows removal of PD circuitry | Select THS3111CDGNR if power-down functionality is unnecessary and BOM consolidation is prioritized |
| LMH6703MA/NOPB | Higher 1.7 GHz GBW but lower output current (120 mA); no integrated power-down; SOIC-8 only | Better suited for RF IF amplification than multi-load video distribution due to limited drive capability | Choose LMH6703MA/NOPB only for single-load, high-frequency (>100 MHz), low-current signal conditioning |
Compared with THS3110CDGNR, THS3111CDGNR removes power management overhead at the cost of flexibility, while LMH6703MA/NOPB trades video-optimized distortion performance for raw bandwidth - neither offers drop-in replacement capability due to differing power-down architecture and output drive limits.
Availability
THS3110CDGNR is available at Aetrix Electronics and suitable for broadcast infrastructure, medical imaging displays, and automated test equipment requiring stable component supply, long-term lifecycle support, and guaranteed traceability through TI's authorized channel.
Supply support for THS3110CDGNR 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-speed op-amps and precision signal chain solutions.
The THS3110CDGNR belongs to TI's THS31xx family of current-feedback amplifiers, engineered specifically for demanding video distribution, high-current line driving, and wideband analog signal conditioning in professional AV and industrial imaging systems.
FAQ
What is the maximum number of 75-Ω video loads the THS3110CDGNR can drive while maintaining broadcast-grade differential gain?
The THS3110CDGNR maintains differential gain error ≤0.3% when driving up to eight 150-Ω loads (equivalent to sixteen 75-Ω loads in parallel configuration), as verified in Figure 29 of the SLOS422E datasheet under ±15 V supply, G = 2, and RF = 1 kΩ conditions. This performance is enabled by its ±260 mA output current capability and low-output-impedance design.
Does the THS3110CDGNR require external compensation for driving 100-pF capacitive loads?
Yes - the THS3110CDGNR requires an external series isolation resistor (RISO) between the output and capacitive load to maintain stability. For 100-pF loads, Figure 8 specifies RISO = 54.9 Ω. Omitting this resistor risks peaking, overshoot, or oscillation due to the amplifier's current-feedback topology interacting with load capacitance.
How does the power-down feature of the THS3110CDGNR affect its output state during disable?
When the PD pin is asserted high (≥REF + 2 V), the THS3110CDGNR enters high-impedance output disable mode - the VOUT pin becomes tri-stated and draws only 270 μA quiescent current. It does not clamp or short the output; external pull-down or termination must be provided if DC bias retention is required at the load.
Can the THS3110CDGNR operate from a single +30-V supply instead of dual ±15-V rails?
Yes - the THS3110CDGNR supports single-supply operation from +10 V to +30 V, per the Recommended Operating Conditions table. When using +30 V, VS− connects to ground, VIN+ and VIN− must remain within the input common-mode range (0 V to +26 V), and output swing is limited to +12 V to +18 V depending on load, as specified in the Output Voltage Swing parameter.
Is the PowerPAD™ thermal pad on the THS3110CDGNR electrically connected to any internal node?
No - the PowerPAD™ on the THS3110CDGNR is electrically isolated from all internal circuitry, as explicitly stated in the datasheet footnote (2). It serves solely as a thermal conduction path to the PCB and must be soldered to a dedicated copper pour; connecting it to VS−, ground, or any signal net violates the thermal design and may cause malfunction or reliability failure.
THS3110CDGNR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- 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-HVSSOP
THS3110CDGNR FAQ
1.How can I place an order for THS3110CDGNR through Aetrix?
Please submit a Request for Quotation (RFQ) for THS3110CDGNR 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 THS3110CDGNR reliable?
The price and inventory of THS3110CDGNR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for THS3110CDGNR is usually 5 days.
3.What payment methods are accepted for THS3110CDGNR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for THS3110CDGNR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for THS3110CDGNR?
THS3110CDGNR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your THS3110CDGNR 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 THS3110CDGNR?
For technical support, including THS3110CDGNR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your THS3110CDGNR requirements.
6.How does Aetrix verify that THS3110CDGNR is sourced from the original manufacturer or authorized distributors?
All THS3110CDGNR 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 THS3110CDGNR meets industry standards.
7.What is the process for return or replacement of THS3110CDGNR?
All THS3110CDGNR units undergo pre-shipment inspection (PSI). If there is an issue with THS3110CDGNR, 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 THS3110CDGNR part is unused and in its original packaging.
Return procedure for THS3110CDGNR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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