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Texas Instruments THS7347IPHPG4
- Part No.:
- THS7347IPHPG4
- Manufacturer:
- Texas Instruments
- Category:
- Video Amps and Modules
- Package:
- 48-PowerTQFP
- Datasheet:
-
THS7347IPHPG4.pdf
- Description:
- IC AMP BUFFER 48HTQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,127
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Product details
Overview
THS7347IPHPG4 from Texas Instruments is a 3-channel RGBHV video buffer IC with I²C control, 2:1 input multiplexer per channel, monitor pass-through path (6 dB gain), and selectable input bias modes (AC-tip clamp, AC-bias, DC, DC+Offset). It delivers 500-MHz bandwidth, 1200-V/μs slew rate, and rail-to-rail output swing for driving ADCs and video decoders in projector and professional video systems.
For engineers reviewing the THS7347IPHPG4 datasheet, THS7347IPHPG4 pinout, THS7347IPHPG4 application, or THS7347IPHPG4 equivalent, key selection considerations include I²C-configurable per-channel bias mode, dual-path (buffer + monitor) operation, SAG correction capability, 3.3 V/5 V single-supply compatibility, and HTQFP-48 PowerPAD™ thermal performance.
Technical Context
The THS7347IPHPG4 integrates three independent video amplifier channels, each with a unity-gain buffer path (500 MHz, 1200 V/μs) for ADC buffering and a separate 6-dB-gain monitor pass-through path (500 MHz, 1300 V/μs) with SAG correction. Input bias is configurable per channel via I²C: AC-coupled with sync-tip clamp (for CVBS/Y′), AC-coupled with fixed bias (for R′G′B′), or DC-coupled with/without offset shift.
It includes dedicated H/V sync paths with externally adjustable Schmitt trigger thresholds (0.9–2.0 V range), I²C slave address pins (A0/A1), power-up control (PUC), and MUX mode/select logic for GPIO or I²C-based 2:1 input selection. All outputs are rail-to-rail, supporting both AC- and DC-coupled loads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Bandwidth (Buffer) | 500 MHz at 3.3 V - supports full-bandwidth RGBHV signal conditioning up to 1080p60 without attenuation |
| Slew Rate (Monitor) | 1300 V/μs - enables fast transient response for high-slew video signals like sync pulses and sharp edges |
| Gain (Monitor Path) | 6 dB (2×) - provides standard video line-driving gain while maintaining impedance matching to 75 Ω systems |
| Input Bias Modes | 4 modes per channel: AC-tip clamp, AC-bias, DC, DC+Offset - eliminates external bias networks for diverse video standards |
| Quiescent Current (All Disabled) | 0.1 μA - enables ultra-low-power standby in portable or energy-sensitive video subsystems |
| I²C Compatibility | Standard & Fast Mode (up to 400 kHz) - allows integration into existing microcontroller-based video configuration buses |
| Supply Range | +2.7 V to +5 V (VA = VDD) - supports direct interface with 3.3 V or 5 V system rails without level-shifting |
Pinout & Package
THS7347IPHPG4 is housed in a 48-pin HTQFP package with exposed PowerPAD™ thermal pad (package code PHP), optimized for low thermal resistance (θJA = 35°C/W) in video signal chain PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CH. 1, INPUT A / B | Video input pair for Channel 1 | Supports 2:1 mux selection; accepts CVBS, Y′P′B′P′R′, or R′G′B′ with configurable bias |
| CH. 1, BUFFER OUTPUT (35,36) | Unity-gain ADC drive output | Dual-pin parallel connection required; drives 19 kΩ || 8 pF ADC inputs with <1.2 ns group delay |
| CH. 1, MONITOR OUTPUT (46) | 6-dB pass-through output | Drives 75 Ω video lines; high-Z disable state (>500 kΩ) isolates downstream circuitry |
| SAG (45) | SAG correction feedback node | Connects to CH.1 MONITOR OUTPUT when SAG correction is enabled; improves low-frequency droop |
| I2C, A0 / A1 (17,18) | I²C slave address bits | Set hardware address (01011xxR/W); enables up to four devices on same bus |
| PUC (21) | Power-up configuration control | Logic-high enables monitor pass-through + AC-bias on power-up; logic-low disables all outputs |
Key Features
| Feature | Design Value |
|---|---|
| Per-channel I²C configurability | Each of 3 video channels independently sets bias mode, MUX source, and enable state-no shared register constraints |
| Rail-to-rail output stage | Swings within 0.1 V of rails at 3.3 V - enables full dynamic range for both AC- and DC-coupled video interfaces |
| Monitor path SAG correction | On-chip low-frequency compensation reduces vertical droop in long cable runs or capacitive loads |
| H/V sync Schmitt trigger adjust | External voltage on pin 14 sets threshold from 0.9 V to 2.0 V - accommodates TTL, CMOS, or custom sync logic levels |
| Thermal-enhanced PowerPAD™ | Exposed die paddle reduces θJC to 1.2°C/W - sustains 265 mW total dissipation at TA = +85°C with proper PCB layout |
Applications
| Projector RGB Input Buffering | Professional Video Switcher Front-End |
|---|---|
Use Scenario: Driving RGBHV signals from multiple sources into a DLP® or LCD projector's ADC front-end with minimal crosstalk and distortion. IC Role / Device Role / Timing Role: THS7347IPHPG4 serves as the primary analog video conditioner-buffering, muxing, and biasing R′G′B′ channels before digitization. Use Value: 0.05% differential gain error and 0.05° phase error preserve color fidelity; 500-MHz bandwidth ensures accurate 1080p timing integrity. | Use Scenario: Accepting redundant CVBS or component video feeds in broadcast switchers, with real-time source switching and monitor loop-through. IC Role / Device Role / Timing Role: THS7347IPHPG4 implements per-channel 2:1 mux + independent buffer/monitor paths for seamless source transitions and clean feed monitoring. Use Value: 64 dB MUX isolation prevents ghosting during switching; 6-dB monitor gain matches legacy video distribution levels without external amplifiers. |
| HDTV Decoder Analog Interface | RGBHV Sync Signal Conditioning |
Use Scenario: Preconditioning Y′P′B′P′R′ signals prior to HDMI encoder or digital scaler in consumer HDTV designs. IC Role / Device Role / Timing Role: THS7347IPHPG4 acts as the final analog stage-applying DC+Offset bias for full-swing decoding and suppressing common-mode noise. Use Value: DC-coupled operation with ±80 mV offset voltage max eliminates coupling capacitors; rail-to-rail swing preserves black/white levels. | Use Scenario: Cleaning and retiming horizontal/vertical sync pulses in RGBHV graphics cards or test equipment. IC Role / Device Role / Timing Role: THS7347IPHPG4 processes H-Sync/V-Sync as dedicated high-speed comparator paths with user-adjustable Schmitt thresholds. Use Value: 6.5 ns propagation delay and 5 ns skew to buffer outputs ensure sub-pixel timing alignment; 10 MΩ input impedance minimizes source loading. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar video buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| THS7353IPHP | Single-channel version; identical architecture, bias modes, and specs per channel | Requires three units for full RGBHV coverage; higher board area and BOM count | Select when channel independence outweighs integration; useful for partial upgrades or mixed-channel designs |
| LMH6739MQX | High-speed op-amp (1.8 GHz GBW); no integrated mux, I²C, or monitor path; discrete bias network needed | Demands external components for video-specific functions (tip-clamp, SAG, sync conditioning) | Choose for non-standard gain/impedance requirements where flexibility justifies added design effort |
Compared with THS7347IPHPG4, THS7353IPHP offers identical per-channel performance but lacks integration, increasing layout complexity; LMH6739MQX provides higher bandwidth but requires full custom implementation of video-specific features, raising validation risk and time-to-market.
Availability
THS7347IPHPG4 is available at Aetrix Electronics and suitable for projector input buffering, professional video switcher front-ends, and HDTV decoder analog interfaces requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for THS7347IPHPG4 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 delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and communications markets.
The THS7347IPHPG4 belongs to TI's high-performance video amplifier product line, engineered specifically for RGBHV signal integrity in projectors, broadcast gear, and display electronics with emphasis on low power, configurability, and system-level integration.
FAQ
What input video standards does the THS7347IPHPG4 support?
The THS7347IPHPG4 supports CVBS, S-Video, EDTV, HDTV Y′P′B′P′R′, G′B′R′, R′G′B′, and H/V sync signals. Its per-channel bias mode selection-AC-sync tip clamp for composite/luma, AC-bias for chroma/component, and DC-coupled modes for digital RGB-enables direct interface with all major analog video standards without external components. Each channel operates independently, allowing mixed-standard inputs across the three channels.
How does the monitor pass-through path differ from the buffer path in THS7347IPHPG4?
The THS7347IPHPG4 buffer path is a unity-gain, 500-MHz amplifier optimized for driving ADCs with 1200-V/μs slew rate and rail-to-rail swing. The monitor pass-through path provides fixed 6-dB gain (2×), 500-MHz bandwidth, 1300-V/μs slew rate, and optional SAG correction-designed to drive 75-Ω video distribution lines. When disabled, the monitor path presents >500 kΩ output impedance, electrically isolating downstream circuits.
Can THS7347IPHPG4 operate from a 3.3 V supply only?
Yes, THS7347IPHPG4 operates fully across 2.7 V to 5 V. At 3.3 V, it delivers 500-MHz small-signal bandwidth, 1200-V/μs buffer slew rate, 1300-V/μs monitor slew rate, and total quiescent current of 80 mA (typical). Key specs-including differential gain (0.05%), phase (0.05°), and output swing (within 0.1 V of rails)-are guaranteed at 3.3 V, making it ideal for modern low-voltage video systems.
What is the function of the SAG pin on THS7347IPHPG4?
The SAG pin on THS7347IPHPG4 is the feedback node for the internal SAG (sagittal) correction circuit in the monitor pass-through path. When enabled, it compensates for low-frequency droop caused by AC coupling in long cables or high-capacitance loads. For standard operation, connect the SAG pin directly to its corresponding MONITOR OUTPUT pin (e.g., pin 45 to pin 46 for Channel 1); leaving it unconnected disables SAG correction.
How is the I²C address configured for THS7347IPHPG4?
The THS7347IPHPG4 I²C slave address is 7-bit: 01011xxR/W, where the two least-significant bits are set by hardware pins I2C, A0 (pin 18) and I2C, A1 (pin 17). Tie A0/A1 to GND (0) or VDD (1) to select one of four unique addresses (0x2C, 0x2D, 0x2E, or 0x2F). This enables up to four THS7347IPHPG4 devices on the same I²C bus without address conflict, supporting multi-channel or multi-board configurations.
THS7347IPHPG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 48-PowerTQFP
- Series:
- -
- Packaging:
- Tray
- Product Status:
- Discontinued at Digi-Key
- Applications:
- Buffer
- Output Type:
- Rail-to-Rail
- Number of Circuits:
- 3
- -3db Bandwidth:
- 550 MHz
- Slew Rate:
- 1200V/µs
- Current - Supply:
- 90 mA
- Current - Output / Channel:
- 110 mA
- Voltage - Supply, Single/Dual (±):
- 2.7V ~ 5.5V
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 48-HTQFP (7x7)
THS7347IPHPG4 FAQ
1.How can I place an order for THS7347IPHPG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for THS7347IPHPG4 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 THS7347IPHPG4 reliable?
The price and inventory of THS7347IPHPG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for THS7347IPHPG4 is usually 5 days.
3.What payment methods are accepted for THS7347IPHPG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for THS7347IPHPG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for THS7347IPHPG4?
THS7347IPHPG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your THS7347IPHPG4 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 THS7347IPHPG4?
For technical support, including THS7347IPHPG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your THS7347IPHPG4 requirements.
6.How does Aetrix verify that THS7347IPHPG4 is sourced from the original manufacturer or authorized distributors?
All THS7347IPHPG4 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 THS7347IPHPG4 meets industry standards.
7.What is the process for return or replacement of THS7347IPHPG4?
All THS7347IPHPG4 units undergo pre-shipment inspection (PSI). If there is an issue with THS7347IPHPG4, 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 THS7347IPHPG4 part is unused and in its original packaging.
Return procedure for THS7347IPHPG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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