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Texas Instruments THS7318YZFR
- Part No.:
- THS7318YZFR
- Manufacturer:
- Texas Instruments
- Category:
- Video Processing
- Package:
- 9-UFBGA, DSBGA
- Datasheet:
-
THS7318YZFR.pdf
- Description:
- IC VIDEO DRIVER 9DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,948
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Product details
Overview
THS7318YZFR from Texas Instruments is a 3-channel low-power analog video line driver IC designed for EDTV/SDTV signal conditioning in portable systems. It integrates 3rd-order 20-MHz Butterworth DAC reconstruction filters, rail-to-rail 6-dB gain output drivers, and low-power shutdown mode (5 µW max), operating from 2.85 V to 5 V supply. It processes Y', P'B/CVBS, and P'R/C' signals for composite and component video output buffering.
For engineers reviewing the THS7318YZFR datasheet, THS7318YZFR pinout, THS7318YZFR application, or THS7318YZFR equivalent, key selection criteria include its 4.5 mA max quiescent current, ±0.14% channel-to-channel gain match, 0.05% differential gain, –21 dB stop-band attenuation at 43 MHz, and DSBGA-9 NanoFree™ package compatibility with USB-powered and space-constrained video interfaces.
Technical Context
The THS7318YZFR implements three independent analog signal paths-Y', P'B/CVBS, and P'R/C'-each comprising DC offset correction, a 3rd-order Butterworth low-pass filter (0.1-dB flatness to 11 MHz, –3 dB at 20 MHz), and a rail-to-rail output buffer. The P'B/CVBS channel is uniquely rated to drive two doubly terminated 75 Ω lines simultaneously, maintaining full performance even if one line is shorted.
It operates on a single supply (2.85–5 V), features logic-controlled enable (EN) with defined thresholds (0.6 V low, 2.1 V high), and delivers 2 V/V nominal voltage gain with <20 ns rise/fall time and 80 V/µs slew rate. Input bias currents range from –100 nA to –415 nA per channel, and PSRR is 47 dB at DC.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.85 V to 5 V - Enables direct integration with 3.3 V and 4.2 V battery-backed or USB-powered portable video systems. |
| Quiescent Supply Current | 3.5 mA (typ), 4.5 mA (max) - Supports extended runtime in personal media players and digital cameras without thermal derating. |
| Shutdown Current | <1 µA - Allows near-zero power consumption during display idle or sleep states in mobile devices. |
| Output Gain | 2 V/V (6 dB) - Matches standard video line driver requirements for 1-VPP CVBS and 0.7-VPP component video levels. |
| –3 dB Bandwidth | 17–20 MHz - Fully supports NTSC/PAL 480i/576i SDTV and 480p/576p EDTV video bandwidths with minimal group delay variation (4 ns). |
| Differential Gain / Phase | 0.05% / 0.03° - Ensures color fidelity and minimal hue shift in consumer-grade analog video output paths. |
| Output DC Offset | 150 mV (typ) - Prevents clipping of sync tips and black-level reference in AC-coupled video transmission. |
Pinout & Package
THS7318YZFR uses a 9-pin NanoFree™ DSBGA (YZF) package measuring 1.45 mm × 1.39 mm × 0.45 mm, RoHS-compliant with SNAGCU ball finish and MSL Level-1 rating. Its wafer-scale construction enables ultra-compact PCB layouts for portable video interfaces.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1C (Y' IN) | Luma input | Accepts gamma-corrected Y' signal from video DAC or encoder; high-impedance input (2.4 MΩ) minimizes loading on source. |
| 1B (P'B IN / CVBS IN) | Blue-difference or composite video input | Dual-function input supporting either component (P'B) or composite (CVBS) video sources; shared signal path with dedicated filtering. |
| 1A (P'R IN / C' IN) | Red-difference or chroma input | Accepts P'R or C' signal; matched input impedance and offset ensures consistent color channel processing. |
| 2C (Vs+) | Positive supply | Single 2.85–5 V rail powers all channels and internal bias circuitry; no separate analog/digital supplies required. |
| 2B (EN) | Enable control | Active-high logic input; drives device into 5 µW shutdown when pulled low; threshold validated at 0.6 V (low) and 2.1 V (high). |
| 2A (GND) | Ground reference | Common return for all internal circuitry; requires low-inductance connection to minimize noise coupling into video paths. |
| 3C (Y' OUT) | Luma output | Rail-to-rail buffered output optimized for 75 Ω doubly terminated line; delivers 2 V/V gain with 70 mA short-circuit capability. |
| 3B (P'B OUT / CVBS OUT) | Blue-difference or composite video output | Drives two 75 Ω loads simultaneously; maintains full video performance even under single-line fault conditions. |
| 3A (P'R OUT / C' OUT) | Red-difference or chroma output | Matched output stage to Y' and P'B channels; ensures ≤±0.14% gain mismatch across all three video channels. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 3rd-order Butterworth LPF | 20-MHz cutoff suppresses DAC imaging artifacts in 54 MSPS video systems (NTSC/PAL 480p/576p), enabling clean display without external filtering. |
| Rail-to-rail output drivers | Supports both AC- and DC-coupled video outputs; eliminates need for level-shifting circuitry in compact portable designs. |
| Channel-matched 6-dB gain | ±0.14% gain match between Y', P'B/CVBS, and P'R/C' paths preserves color balance and luma-chroma timing alignment. |
| Low-power shutdown mode | 5 µW max shutdown current enables seamless integration into power-managed video subsystems with dynamic enable control. |
| NanoFree™ DSBGA-9 package | 1.45 mm × 1.39 mm footprint reduces board area by >70% vs. QFN alternatives, critical for camera modules and smartphone video buffers. |
Applications
| Personal Media Players | Digital Cameras |
|---|---|
|
Use Scenario: Driving analog video output (CVBS or component) from a portable media player's video DAC to external displays or TVs. IC Role / Device Role / Timing Role: Analog video line driver with integrated reconstruction filtering and rail-to-rail output buffering. Use Value: Eliminates discrete filter and amplifier stages while delivering 0.05% differential gain and 4.5 mA total supply current for >10-hour playback. |
Use Scenario: Buffering Y', P'B, and P'R signals from an image processor to HDMI transmitter or analog video port in DSLR/mirrorless cameras. IC Role / Device Role / Timing Role: Three-channel video signal conditioner with matched gain and phase response across luma and chroma paths. Use Value: Maintains color fidelity (0.03° differential phase) and supports 480p/576p resolution without external passive components. |
| Cellular Phone Video Output | USB-Powered Portable Video Buffers |
|
Use Scenario: Enabling analog video mirroring (e.g., via MHL or proprietary analog interface) from smartphones to external monitors. IC Role / Device Role / Timing Role: Low-power, enable-controlled video driver supporting dual-mode P'B/CVBS and P'R/C' outputs. Use Value: 5 µW shutdown mode extends battery life during inactive video sessions; EN pin allows host-processor–managed power gating. |
Use Scenario: Signal conditioning in USB-powered dongles that convert digital video (e.g., DisplayLink) to analog CVBS/component output. IC Role / Device Role / Timing Role: Single-supply 3-channel video amplifier with integrated 20-MHz reconstruction filters and 75 Ω drive capability. Use Value: Operates directly from 5 V USB rail; eliminates need for LDO and external filters, reducing BOM count and layout complexity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 3-channel analog video driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| THS7314YZFR | 4-channel version with identical 20-MHz filters, 6-dB gain, and NanoFree™ DSBGA-12 package; adds fourth channel for RGB or auxiliary video. | Requires PCB redesign for 12-pin layout and additional routing; suitable only when fourth video channel is needed. | Select THS7314YZFR only if system architecture requires four independent video outputs; THS7318YZFR remains optimal for 3-channel cost- and space-constrained designs. |
| LMH0387SQ/NOPB | SDI reclocker with integrated cable driver; not a baseband video amplifier - lacks DAC reconstruction filters, DC offset, and CVBS/component flexibility. | Designed for serial digital video (HD-SDI), not analog baseband; incompatible with Y'/P'B/P'R signal chain topology. | LMH0387SQ/NOPB is not a functional alternative; THS7318YZFR remains the only validated 3-channel analog video line driver with integrated Butterworth filters in NanoFree™ packaging. |
Compared with THS7314YZFR, THS7318YZFR offers lower pin count, smaller footprint, and reduced power for strict 3-channel applications; compared with LMH0387SQ/NOPB, it provides true analog baseband signal conditioning - not serial digital transport - making it the sole viable option for portable CVBS/component video buffering.
Availability
THS7318YZFR is available at Aetrix Electronics and suitable for personal media players, digital cameras, and cellular phone video output applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for THS7318YZFR 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, embedded processing, and connectivity technologies, with over 90 years of innovation in precision analog signal conditioning.
The THS7318YZFR belongs to TI's video line driver product line, engineered specifically for low-power, high-fidelity analog video signal conditioning in portable and USB-powered consumer electronics.
FAQ
What is the maximum operating temperature range for the THS7318YZFR?
The THS7318YZFR is specified for operation from –40°C to +85°C ambient temperature. This industrial-grade range ensures reliable performance in handheld devices exposed to variable environmental conditions, including digital cameras and portable media players operating under sustained video load.
Does the THS7318YZFR support both CVBS and component video formats simultaneously?
No - the THS7318YZFR supports either CVBS or component video per channel, but not simultaneously across all three paths. Pin 1B accepts P'B/CVBS IN and pin 3B outputs P'B/CVBS OUT; pin 1A accepts P'R/C' IN and pin 3A outputs P'R/C' OUT. System design must select one format per channel during layout.
What is the purpose of the 150 mV DC output offset in the THS7318YZFR?
The 150 mV DC output offset in the THS7318YZFR prevents saturation of downstream AC-coupled video inputs by establishing a stable black-level reference above ground. This offset is internally generated and applied uniformly across all three channels to maintain sync tip integrity and avoid video compression in standard 75 Ω terminated systems.
Can the THS7318YZFR drive two 75 Ω loads on the P'B/CVBS channel without performance degradation?
Yes - the P'B/CVBS channel (pins 1B and 3B) is explicitly designed to drive two doubly terminated 75 Ω video lines concurrently. Even under fault conditions where one line is shorted, the THS7318YZFR maintains full video performance (0.05% differential gain, 0.03° differential phase) on the properly terminated output.
Is the THS7318YZFR pin-compatible with other members of the THS73xx family?
No - the THS7318YZFR uses a 9-pin DSBGA (YZF) package and is not pin-compatible with THS7314YZFR (12-pin) or THS7353RGTT (16-pin QFN). Pin assignments, package dimensions, and thermal characteristics differ across the family; PCB layout must be specific to the YZF variant used in THS7318YZFR.
THS7318YZFR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 9-UFBGA, DSBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Driver
- Applications:
- Consumer Video
- Standards:
- -
- Control Interface:
- -
- Voltage - Supply:
- 2.85V ~ 5.0V
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 9-DSBGA
THS7318YZFR FAQ
1.How can I place an order for THS7318YZFR through Aetrix?
Please submit a Request for Quotation (RFQ) for THS7318YZFR 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 THS7318YZFR reliable?
The price and inventory of THS7318YZFR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for THS7318YZFR is usually 5 days.
3.What payment methods are accepted for THS7318YZFR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for THS7318YZFR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for THS7318YZFR?
THS7318YZFR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your THS7318YZFR 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 THS7318YZFR?
For technical support, including THS7318YZFR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your THS7318YZFR requirements.
6.How does Aetrix verify that THS7318YZFR is sourced from the original manufacturer or authorized distributors?
All THS7318YZFR 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 THS7318YZFR meets industry standards.
7.What is the process for return or replacement of THS7318YZFR?
All THS7318YZFR units undergo pre-shipment inspection (PSI). If there is an issue with THS7318YZFR, 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 THS7318YZFR part is unused and in its original packaging.
Return procedure for THS7318YZFR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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