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Analog Devices Inc. LT6558CGN#TRPBF
- Part No.:
- LT6558CGN#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Video Amps and Modules
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
LT6558CGN#TRPBF.pdf
- Description:
- IC AMP GENERAL PURPOSE 16SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,851
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Product details
Overview
LT6558CGN#TRPBF from Analog Devices (acquired Linear Technology) is a high-speed triple video amplifier with fixed gain of 1, programmable DC input bias control, and independent power/ground per channel. It delivers 550MHz small-signal bandwidth, 2200V/µs slew rate, ±90mA output current, and full 2VP-P swing on a single 5V supply-designed for RGB HD video amplification in LCD projectors and coaxial cable drivers.
For engineers reviewing the LT6558CGN#TRPBF datasheet, LT6558CGN#TRPBF pinout, LT6558CGN#TRPBF application, or LT6558CGN#TRPBF equivalent, key selection criteria include AC-coupled input bias programmability via BCV pin, 0.8V rail-to-rail output swing capability, differential gain/phase accuracy (0.02%/0.02°), shutdown enable functionality, and SSOP-16 package compatibility with industrial temperature range (–40°C to 85°C).
Technical Context
The LT6558CGN#TRPBF integrates three independent unity-gain voltage buffers with separate V+ and GND pins per channel to minimize crosstalk and simplify bypassing. Its internal bias control circuitry allows all three inputs to be set to a common DC level using a single resistor between BCV (Pin 16) and GND (Pin 2), enabling simplified AC-coupled video signal conditioning without external clamps.
It features an enable/shutdown pin (Pin 1) with internal 40kΩ pull-up, supporting fast 50ns enable and 1µs shutdown transitions. Output stages are optimized for driving heavy loads-including 75Ω coaxial cables-while maintaining 0.8V headroom from both rails and preserving video fidelity across NTSC and HD formats.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-Signal Bandwidth | 550MHz at 0.2VP-P - supports pixel clock frequencies up to 1080p60 RGB without attenuation |
| Large-Signal Bandwidth | 400MHz at 2VP-P - maintains full video amplitude integrity for broadcast-grade signals |
| Slew Rate | 2200V/µs - ensures minimal transient distortion on sharp video edges and sync pulses |
| Output Swing | 0.8V to 4.2V on 5V supply - enables full 2VP-P video swing with margin for noise and droop |
| Differential Gain/Phase | 0.02% / 0.02° - meets stringent NTSC/PAL color fidelity requirements |
| Supply Range | 3V to 7.5V - supports single-supply operation from 3.3V logic rails up to 5V/7.5V analog domains |
| Operating Temp | –40°C to 85°C - qualified for industrial and embedded video equipment environments |
| Enable Pin Threshold | EN < 1.5V below V+ to enable - compatible with standard CMOS logic interfaces |
Pinout & Package
LT6558CGN#TRPBF is packaged in a 16-lead narrow-body SSOP (GN package), 5.8mm × 3.9mm footprint, with exposed thermal pad not present (unlike DFN variant). Pin pitch is 0.025" (0.635mm); recommended solder pad layout follows LTC DWG #05-08-1641.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (Pin 1) | Enable control input | Pull low to activate all three amplifiers; open or pulled high disables with ~10µA quiescent current |
| GND (Pin 2) | Enable and BCV reference ground | Must be externally connected to system ground; serves as return for internal bias network |
| IN R/G/B (Pins 3,5,7) | Noninverting inputs | High-impedance (450kΩ) inputs; bias level programmable via BCV pin for AC coupling |
| GND R/G/B (Pins 4,6,8) | Independent channel grounds | Not internally tied together-must be individually routed to ground to suppress inter-channel crosstalk |
| V+ B/G/R (Pins 9,11,13) | Per-channel positive supplies | Separate supply pins allow localized decoupling and reduce supply-induced interference between RGB channels |
| OUT B/G/R (Pins 10,12,14) | Amplifier outputs | Capable of ±90mA drive into 150Ω; swings within 0.8V of rails for 5V operation |
| V+ (Pin 15) | Control circuitry supply | Supplies internal bias generator and enable logic; requires dedicated 2.2µF + 10nF bypass |
| BCV (Pin 16) | Bias control voltage input | Resistor to GND sets common-mode input bias; open disables internal bias for DC-coupled use |
Key Features
| Feature | Design Value |
|---|---|
| Triple independent unity-gain buffers | Eliminates need for external gain-setting resistors; preserves signal polarity and timing alignment across RGB paths |
| Programmable input DC bias | Single resistor from BCV to GND configures common-mode level for all three channels-reduces component count in AC-coupled video front-ends |
| Rail-to-rail output swing margin | Outputs swing to 0.8V above GND and 0.9V below V+ on 5V supply-supports full 2VP-P video swing with headroom for load variation and PCB loss |
| Channel isolation architecture | Separate V+ and GND pins per amplifier reduce inter-channel crosstalk to –80dB @ 10MHz-critical for color channel purity in HD displays |
| Fast enable/disable control | 50ns turn-on and 1µs shutdown times support dynamic power gating in portable or energy-sensitive video systems |
| NTSC-optimized video performance | 0.02% differential gain and 0.02° differential phase meet broadcast video linearity standards without external calibration |
Applications
| RGB HD Video Amplifier | Coaxial Cable Driver |
|---|---|
Use Scenario: Driving RGB signals from graphics processor to LCD projector panel over short PCB traces and flexible cables. IC Role / Device Role / Timing Role: Triple unity-gain buffer providing matched delay, amplitude, and phase response across red/green/blue channels. Use Value: Maintains color fidelity (ΔG = 0.02%, ΔΦ = 0.02°) and edge integrity (2200V/µs slew) for 1080p60 content without external tuning components. | Use Scenario: Transmitting composite HD video over 75Ω coaxial cables in broadcast monitoring equipment. IC Role / Device Role / Timing Role: High-current video driver delivering ±90mA into 75Ω loads while preserving group delay flatness up to 100MHz. Use Value: Enables direct 75Ω drive without external termination or level-shifting, reducing bill-of-materials and board space in compact video routing hardware. |
| Single-Supply ADC Driver | LCD Video Projector Signal Chain |
Use Scenario: Conditioning analog video signals prior to digitization in low-voltage embedded vision systems. IC Role / Device Role / Timing Role: Level-shifting and buffering stage that translates AC-coupled video to mid-supply common-mode for 3.3V or 5V ADC inputs. Use Value: Programmable BCV pin eliminates need for external DC restoration clamps-simplifies design and improves startup reliability in battery-powered devices. | Use Scenario: Final-stage amplification before gamma correction and panel interface in consumer LCD projectors. IC Role / Device Role / Timing Role: Output driver ensuring stable 2VP-P swing into capacitive panel loads while rejecting supply noise via per-channel V+/GND separation. Use Value: Delivers consistent brightness and contrast across all pixels by minimizing channel-to-channel gain mismatch (±0.05% typical) and PSRR >42dB. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar triple video amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT6554CGN#TRPBF | Same 16-pin SSOP package, identical pinout, 650MHz small-signal BW, 2100V/µs slew rate, no BCV pin-fixed internal bias only | Optimized for higher-frequency video (e.g., UXGA, WUXGA) but lacks programmable input bias for flexible AC-coupling | Select when bandwidth >550MHz is required and input bias can be fixed or handled externally |
| LT6557CGN#TRPBF | 500MHz BW, 2200V/µs slew, same BCV programmability and SSOP-16 footprint, but specified for 75Ω cable drive optimization | Better matched output impedance for long coax runs; slightly lower bandwidth trades off for improved cable return loss | Select for cost-sensitive 1080p projector designs where 500MHz is sufficient and 75Ω drive robustness is prioritized |
Compared with LT6558CGN#TRPBF, LT6554CGN#TRPBF offers higher bandwidth but forfeits input bias flexibility, while LT6557CGN#TRPBF trades 50MHz bandwidth for enhanced 75Ω drive compliance-making LT6558CGN#TRPBF the optimal balance of programmability, speed, and video fidelity for general-purpose RGB amplification.
Availability
LT6558CGN#TRPBF is available at Aetrix Electronics and suitable for LCD video projectors, RGB HD video amplifiers, coaxial cable drivers, low-supply ADC drivers, and industrial video signal conditioning requiring stable component supply and guaranteed industrial temperature operation.
Supply support for LT6558CGN#TRPBF 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
Analog Devices, Inc. (ADI) is a global semiconductor leader specializing in high-performance analog, mixed-signal, and digital signal processing technologies. Following its acquisition of Linear Technology in 2017, ADI expanded its precision amplifier portfolio for demanding signal chain applications.
The LT6558CGN#TRPBF belongs to Linear's legacy high-speed video amplifier product line, engineered specifically for broadcast-quality RGB video distribution in space-constrained, single-supply systems-emphasizing low distortion, tight channel matching, and robust output drive.
FAQ
What is the operating temperature range for the LT6558CGN#TRPBF?
The LT6558CGN#TRPBF is rated for operation from –40°C to +85°C. This industrial temperature grade is fully tested and guaranteed over the entire range, making it suitable for embedded video equipment deployed in uncontrolled environments such as kiosks, medical displays, and industrial HMIs. The SSOP package has a maximum junction temperature of 150°C.
Does the LT6558CGN#TRPBF require external gain-setting resistors?
No, the LT6558CGN#TRPBF features a fixed gain of 1 and does not require external resistors to set gain. Its internal architecture is configured as a unity-gain buffer for each of the three channels. This simplifies layout, eliminates resistor matching concerns, and ensures consistent gain across RGB paths-critical for color accuracy in video applications.
How is input DC bias programmed on the LT6558CGN#TRPBF?
Input DC bias on the LT6558CGN#TRPBF is programmed using a single resistor between the BCV pin (Pin 16) and GND (Pin 2). With a 158Ω resistor, the inputs are biased to approximately 2.5V for 5V supply operation. Leaving BCV open disables the internal bias circuit, allowing external clamping or DC-coupled configurations. This feature is unique to the LT6558CGN#TRPBF among its family members.
Can the LT6558CGN#TRPBF drive 75Ω coaxial cables directly?
Yes, the LT6558CGN#TRPBF can drive 75Ω coaxial cables directly. It delivers ±90mA output current and maintains excellent video fidelity-differential gain/phase of 0.02%/0.02°-into 150Ω loads (equivalent to two 75Ω cables in parallel). For single 75Ω termination, series 75Ω isolation resistors are recommended at each output to preserve stability and match impedance.
What is the function of the separate V+ and GND pins for each channel on the LT6558CGN#TRPBF?
The separate V+ and GND pins per channel on the LT6558CGN#TRPBF isolate power domains to minimize inter-channel crosstalk and improve PSRR. Each amplifier section has dedicated supply and ground connections, enabling localized bypassing and preventing current surges in one channel from modulating another's output. This architecture achieves –80dB crosstalk at 10MHz-essential for high-fidelity RGB signal integrity.
LT6558CGN#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 16-SSOP (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- General Purpose
- Output Type:
- -
- Number of Circuits:
- 3
- -3db Bandwidth:
- 550 MHz
- Slew Rate:
- 2200V/µs
- Current - Supply:
- 22.5 mA
- Current - Output / Channel:
- 90 mA
- Voltage - Supply, Single/Dual (±):
- 3V ~ 7.5V, ±2.5V ~ 3.3V
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 16-SSOP
LT6558CGN#TRPBF FAQ
1.How can I place an order for LT6558CGN#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT6558CGN#TRPBF 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 LT6558CGN#TRPBF reliable?
The price and inventory of LT6558CGN#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT6558CGN#TRPBF is usually 5 days.
3.What payment methods are accepted for LT6558CGN#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT6558CGN#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT6558CGN#TRPBF?
LT6558CGN#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT6558CGN#TRPBF 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 LT6558CGN#TRPBF?
For technical support, including LT6558CGN#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT6558CGN#TRPBF requirements.
6.How does Aetrix verify that LT6558CGN#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT6558CGN#TRPBF 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 LT6558CGN#TRPBF meets industry standards.
7.What is the process for return or replacement of LT6558CGN#TRPBF?
All LT6558CGN#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT6558CGN#TRPBF, 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 LT6558CGN#TRPBF part is unused and in its original packaging.
Return procedure for LT6558CGN#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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