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NXP Semiconductors TDA6111Q/N4,112
- Part No.:
- TDA6111Q/N4,112
- Manufacturer:
- NXP Semiconductors
- Category:
- Video Amps and Modules
- Package:
- 9-SIP Exposed Tab, Formed Leads
- Datasheet:
-
TDA6111Q/N4,112.pdf
- Description:
- IC AMP GENERAL PURPOSE DBS9MPF
- Quantity:
- Payment:
- Shipping:
Inventory:2,557
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Product details
Overview
TDA6111Q/N4,112 from Philips Semiconductors is a high-voltage video output amplifier designed to drive the cathode of colour CRT displays. It features 16 MHz small-signal bandwidth, 3000 V/µs slew rate, dual cathode outputs (DC and transient), and integrated CRT flashover protection. Used in analog TV and monitor video output stages where high-voltage swing and fast transient response are required.
For engineers reviewing the TDA6111Q/N4,112 datasheet, TDA6111Q/N4,112 pinout, TDA6111Q/N4,112 application, or TDA6111Q/N4,112 equivalent, key selection criteria include cathode output voltage range (VDDL to VDDH), black-current measurement capability, differential input drift (50 µV/K), and flashover-rated peak current handling (10 A at 100 nC).
Technical Context
The TDA6111Q/N4,112 employs high-voltage DMOS technology in a single-in-line 9-pin DBS9MPF package to deliver robust cathode drive for CRT systems. Its architecture includes a differential input stage with <0.5 pF differential capacitance, mirrored current sources for cathode DC/transient separation, and dedicated feedback output decoupled from cathode paths.
Flashover protection is implemented via internal clamping diodes connecting cathode outputs to VDDH, requiring external 680 Ω HV resistor and 2 kV spark gap. Switch-off behavior is defined: when VDDL drops below ~5 V, all cathode and feedback outputs go high, ensuring safe CRT blanking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Bandwidth (small signal) | 16 MHz - supports full NTSC/PAL luminance bandwidth without distortion |
| Slew rate | 3000 V/µs - enables clean 100 Vp-p square-wave transitions at CRT line rates |
| Supply voltage range | VDDH = 0–250 V; VDDL = 0–14 V - accommodates standard CRT anode and logic supply rails |
| Cathode output voltage range | Voc = VDDL to VDDH - delivers full high-voltage swing directly to CRT cathode |
| Input offset voltage | ±50 mV - ensures stable black-level reference under temperature variation |
| Black-current measurement accuracy | ±10 µA offset - enables precise Automatic Black-current Stabilization (ABS) loop control |
| Thermal resistance (junct-to-case) | 12 K/W - mandates external heatsink for >2 W dissipation in continuous operation |
Pinout & Package
Package: DBS9MPF - plastic DIL-bent-SIL medium power package with fin; 9 leads (SOT111-1); requires external heatsink per thermal spec.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: Vip | Non-inverting voltage input | Differential input node with ≤0.5 pF capacitance; referenced to Vin for common-mode rejection |
| 2: VDDL | Low-level supply voltage | 12 V logic supply rail; switch-off threshold at ~5 V triggers high-Z cathode state |
| 3: Vin | Inverting voltage input | Complementary differential input; max ±6 V differential mode voltage rating |
| 4: GND | Ground / substrate connection | Reference for all voltages; must be low-inductance path for HV return currents |
| 5: Iom | Black-current measurement output | Current-sense output for ABS loop; ±10 µA offset enables sub-1% black-level stability |
| 6: VDDH | High-level supply voltage | 200 V nominal CRT anode supply; clamped during flashover to protect cathode outputs |
| 7: Vcn | Cathode transient voltage output | Drives CRT cathode during fast transients; optimized for <36 ns rise/fall time |
| 8: Voc | Cathode DC voltage output | Provides steady cathode bias; separated from Vcn to avoid AC coupling into DC path |
| 9: Vfb | Feedback voltage output | Isolated feedback node; allows closed-loop gain setting without loading cathode outputs |
Key Features
| Feature | Design Value |
|---|---|
| Dual cathode output topology | Separate DC (pin 8) and transient (pin 7) outputs prevent AC/DC crosstalk in CRT drive |
| Integrated CRT flashover protection | Clamps cathode pins to VDDH during positive flash events; supports 10 A/100 nC peak discharge |
| Black-current measurement output | Pin 5 provides direct current-sense signal for closed-loop ABS, eliminating external sensing resistors |
| Differential input with low capacitance | 0.5 pF differential input capacitance minimizes phase shift and preserves high-frequency video integrity |
| Defined switch-off behavior | Outputs go high when VDDL <5 V - ensures fail-safe CRT blanking during power-down or fault |
Applications
| TV Video Output Stage | Monitor CRT Driver |
|---|---|
Use Scenario: Driving the red/green/blue cathodes in analog NTSC/PAL television receivers with 50–60 Hz field rate and 15.625 kHz line rate. IC Role / Device Role / Timing Role: Final-stage video amplifier delivering 100 Vp-p RGB signals to CRT cathodes with minimal overshoot (<9%) and 23 ns propagation delay. Use Value: Enables accurate black-level tracking via Iom pin and maintains color fidelity across full bandwidth due to 16 MHz small-signal response. |
Use Scenario: High-resolution VGA/SVGA monitor output stage requiring stable DC bias and fast transient response for sharp text rendering. IC Role / Device Role / Timing Role: Cathode driver with separate DC (Voc) and transient (Vcn) outputs to eliminate settling errors during pixel transitions. Use Value: Dual-output architecture prevents brightness modulation during rapid horizontal scanning, improving grayscale consistency. |
| Professional Video Equipment | Legacy Broadcast Monitor |
Use Scenario: Component video (Y/Pb/Pr) output amplification in studio-grade equipment where signal integrity and thermal stability are critical. IC Role / Device Role / Timing Role: High-voltage buffer with 85 dB SVRRH suppressing ripple on 200 V anode rail from affecting video DC level. Use Value: Low 50 µV/K input drift ensures black-level stability over ambient temperature swings from −20°C to +65°C. |
Use Scenario: CRT-based broadcast monitoring in OB vans and control rooms where reliability under variable line voltage is essential. IC Role / Device Role / Timing Role: Protected video output stage with flashover clamping and ESD-hardened inputs (HBM >1500 V). Use Value: Integrated protection eliminates need for external TVS diodes, reducing BOM count and PCB area in space-constrained chassis. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar video output amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TDA6103Q | Lower bandwidth (12 MHz), no black-current measurement output, single cathode output | Lacks ABS support and dual-cathode separation; suitable only for non-stabilized CRT designs | Select when ABS functionality and transient/DC output isolation are not required |
| LA7835 | Higher quiescent current (12 mA), no integrated flashover clamping, different pinout (16-pin DIP) | Requires external protection circuitry and larger PCB footprint; lacks differential input | Choose only if legacy LA78xx board compatibility is mandatory and thermal headroom exists |
Compared with TDA6111Q/N4,112, the TDA6103Q omits black-current sensing and cathode output separation-reducing design flexibility for precision CRT stabilization-while the LA7835 demands additional protection components and offers no differential input advantage, increasing system complexity and cost.
Availability
TDA6111Q/N4,112 is available at Aetrix Electronics and suitable for analog TV receivers, CRT monitors, and professional video equipment requiring stable component supply with long-lifecycle support.
Supply support for TDA6111Q/N4,112 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
Philips Semiconductors (now NXP Semiconductors) is a global semiconductor manufacturer founded in the Netherlands, specializing in analog, mixed-signal, and high-voltage ICs for consumer and industrial applications.
The TDA6111Q/N4,112 belongs to Philips' CRT video output amplifier product line, engineered specifically for high-reliability analog display systems requiring integrated flashover protection, black-level stabilization, and dual-path cathode drive.
FAQ
What is the maximum cathode output voltage swing supported by the TDA6111Q/N4,112?
The TDA6111Q/N4,112 supports a cathode output voltage swing from VDDL to VDDH - typically 12 V to 200 V - enabling full-range drive of colour CRT cathodes. Absolute maximum ratings allow up to 250 V on VDDH, but operation above 210 V risks exceeding junction temperature limits without derating.
Does the TDA6111Q/N4,112 require external components for CRT flashover protection?
Yes, the TDA6111Q/N4,112 requires an external 680 Ω carbon high-voltage resistor in series with the cathode output and a 2 kV spark gap to limit diode current during flashover events. This configuration is mandatory to ensure the internal clamping diodes operate within safe energy limits per the datasheet.
How does the black-current measurement output (pin 5) function in the TDA6111Q/N4,112?
The Iom pin (pin 5) of the TDA6111Q/N4,112 provides a current-proportional signal representing black-current flow, enabling Automatic Black-current Stabilization (ABS). With ±10 µA offset and linear current transfer (0.9–1.1 V/V), it interfaces directly with external op-amps for closed-loop DC bias control without added sensing resistors.
What thermal management is required for continuous operation of the TDA6111Q/N4,112?
The TDA6111Q/N4,112 has Rth j-c = 12 K/W and requires an external heatsink. For total dissipation up to 4 W, the combined junction-to-ambient thermal resistance must remain below 24 K/W. Mounting on the picture tube base print and using a low-thermal-resistance interface are essential to maintain Tj ≤ 150 °C.
Can the TDA6111Q/N4,112 be used with modern LCD or OLED displays?
No - the TDA6111Q/N4,112 is specifically designed for high-voltage cathode drive in colour CRT systems and lacks the low-voltage logic interfaces, digital timing, or gamma correction required for LCD/OLED panels. Its 200 V output swing and flashover protection have no functional relevance in solid-state display architectures.
TDA6111Q/N4,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 9-SIP Exposed Tab, Formed Leads
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Applications:
- General Purpose
- Output Type:
- -
- Number of Circuits:
- 1
- -3db Bandwidth:
- 16 MHz
- Slew Rate:
- 3000V/µs
- Current - Supply:
- 9 mA
- Current - Output / Channel:
- 10 A
- Voltage - Supply, Single/Dual (±):
- -
- Mounting Type:
- Through Hole
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- DBS9MPF
TDA6111Q/N4,112 FAQ
1.How can I place an order for TDA6111Q/N4,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for TDA6111Q/N4,112 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 TDA6111Q/N4,112 reliable?
The price and inventory of TDA6111Q/N4,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TDA6111Q/N4,112 is usually 5 days.
3.What payment methods are accepted for TDA6111Q/N4,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TDA6111Q/N4,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TDA6111Q/N4,112?
TDA6111Q/N4,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TDA6111Q/N4,112 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 TDA6111Q/N4,112?
For technical support, including TDA6111Q/N4,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TDA6111Q/N4,112 requirements.
6.How does Aetrix verify that TDA6111Q/N4,112 is sourced from the original manufacturer or authorized distributors?
All TDA6111Q/N4,112 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 TDA6111Q/N4,112 meets industry standards.
7.What is the process for return or replacement of TDA6111Q/N4,112?
All TDA6111Q/N4,112 units undergo pre-shipment inspection (PSI). If there is an issue with TDA6111Q/N4,112, 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 TDA6111Q/N4,112 part is unused and in its original packaging.
Return procedure for TDA6111Q/N4,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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