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Analog Devices Inc. LT6558IGN#TRPBF
- Part No.:
- LT6558IGN#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Video Amps and Modules
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
LT6558IGN#TRPBF.pdf
- Description:
- IC AMP GENERAL PURPOSE 16SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,019
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Product details
Overview
LT6558IGN#TRPBF from Analog Devices (formerly 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 drive, and rail-to-rail output swing within 0.8V of supply rails-enabling full 2VP-P video swing on a single 5V supply for RGB HD video systems.
For engineers reviewing the LT6558IGN#TRPBF datasheet, LT6558IGN#TRPBF pinout, LT6558IGN#TRPBF application, or LT6558IGN#TRPBF equivalent, this page provides verified specifications, SSOP-16 pin mapping, AC-coupled RGB driver implementation details, differential gain/phase performance (0.02%/0.02°), and validated alternatives for single-supply video signal conditioning.
Technical Context
The LT6558IGN#TRPBF integrates three independent unity-gain voltage buffers with separate V+ and GND pins per channel to minimize crosstalk and simplify bypassing. Its programmable input bias circuit (via BCV pin and external resistor) enables precise DC level setting for AC-coupled video inputs without external clamps.
It features an enable/shutdown pin (EN) with internal 40kΩ pull-up, supporting fast 50ns enable and 1µs shutdown transitions. Output stages are optimized for driving 75Ω coaxial cables or 150Ω loads while maintaining <0.1dB gain flatness up to 100MHz and low distortion (HD2 = –75dBc at 10MHz).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-Signal Bandwidth | 550MHz at 0.2VP-P - supports high-resolution digital video pixel rates without attenuation |
| Large-Signal Bandwidth | 400MHz at 2VP-P - preserves full NTSC/PAL/HD video amplitude integrity |
| Slew Rate | 2200V/µs - ensures minimal transient distortion on fast video edges |
| Output Swing | 0.8V to 4.2V on 5V supply - delivers full 2VP-P video swing with headroom for sync pulses |
| Differential Gain / Phase | 0.02% / 0.02° - meets broadcast-grade video fidelity requirements |
| Supply Current per Channel | 25mA typical at 5V - enables thermal management in compact SSOP-16 layout |
| Input Bias Control | Programmable via BCV pin and resistor (e.g., 158Ω → 2.5V bias) - eliminates external DC restoration circuitry |
Pinout & Package
LT6558IGN#TRPBF is packaged in a 16-lead narrow-body SSOP (GN package), with exposed pad not present (DFN variant has exposed pad; SSOP does not). Pin assignments are electrically validated per Linear Technology's official pin function table and schematic diagrams.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (Pin 1) | Enable/Shutdown Control | Pull low to enable; open or pulled high disables amplifier with ~10µA quiescent current |
| GND (Pin 2) | Enable & BCV Reference Ground | Common reference for EN and BCV circuits; must be externally connected to system ground |
| IN R (Pin 3) | Red Channel Input | High-impedance (450kΩ) noninverting input; bias set by BCV network when active |
| GND R (Pin 4) | Red Channel Ground | Independent ground return for red amplifier section; reduces inter-channel crosstalk |
| IN G (Pin 5) | Green Channel Input | Identical to IN R; shares same BCV bias configuration |
| GND G (Pin 6) | Green Channel Ground | Independent ground return for green amplifier section |
| IN B (Pin 7) | Blue Channel Input | Identical to IN R/G; enables synchronized RGB bias programming |
| GND B (Pin 8) | Blue Channel Ground | Independent ground return for blue amplifier section |
| V+ B (Pin 9) | Blue Channel Positive Supply | Separate supply pin for blue amplifier; requires local 2.2µF + 10nF bypassing |
| OUT B (Pin 10) | Blue Channel Output | Capable of ±90mA drive into 150Ω; swings 0.8V–4.2V on 5V supply |
| V+ G (Pin 11) | Green Channel Positive Supply | Separate supply pin for green amplifier; decoupling critical for PSRR >42dB |
| OUT G (Pin 12) | Green Channel Output | Matched gain error ±0.05% vs red/blue channels - ensures color fidelity |
| V+ R (Pin 13) | Red Channel Positive Supply | Separate supply pin for red amplifier; minimizes supply-induced crosstalk |
| OUT R (Pin 14) | Red Channel Output | Primary timing reference output; used in typical RGB driver applications |
| V+ (Pin 15) | Control Circuitry Supply | Supplies internal bias and enable logic; bypass separately from channel supplies |
| BCV (Pin 16) | Bias Control Voltage Input | Resistor-to-ground sets common DC bias for all three inputs (e.g., 158Ω → 2.5V) |
Key Features
| Feature | Design Value |
|---|---|
| Triple independent amplifiers with isolated supplies/grounds | Reduces inter-channel crosstalk to –80dB at 10MHz - critical for RGB separation |
| Programmable input DC bias via single resistor | Eliminates external clamp diodes or op-amp bias networks in AC-coupled video paths |
| Unity gain (G = +1) with no external resistors required | Guarantees gain matching ±0.05% between channels - avoids color shading artifacts |
| Rail-swing output (0.8V to 4.2V on 5V) | Supports full 2VP-P video signal including sync tips without clipping or level-shifting |
| Enable pin with 50ns turn-on / 1µs shutdown | Enables dynamic power gating in portable or energy-sensitive video systems |
Applications
| RGB HD Video Amplifier | Coaxial Cable Driver |
|---|---|
|
Use Scenario: Driving RGB signals from graphics processor to LCD projector panel over short PCB traces. IC Role / Device Role / Timing Role: Triple unity-gain buffer with matched gain and phase across R/G/B channels to preserve color accuracy and timing alignment. Use Value: Differential gain/phase of 0.02%/0.02° ensures no hue/saturation shift; 400MHz large-signal bandwidth maintains edge integrity at 1080p60. |
Use Scenario: Transmitting component video (YPbPr) over 75Ω coaxial cables in broadcast equipment. IC Role / Device Role / Timing Role: High-current output driver capable of sourcing/sinking ±90mA into 75Ω loads while maintaining low group delay variation. Use Value: Output swing to 0.8V of rails enables full 1VP-P sync pulse + 0.7VP-P video without external level shifting. |
| Single-Supply ADC Driver | AC-Coupled Video Distribution |
|
Use Scenario: Conditioning analog video outputs before digitization in low-voltage embedded vision systems. IC Role / Device Role / Timing Role: Wideband buffer isolating source from ADC input capacitance while providing precise DC bias for sampling window. Use Value: 550MHz small-signal bandwidth prevents aliasing; programmable BCV pin sets optimal common-mode voltage for 12-bit ADC front-end. |
Use Scenario: Splitting one RGB source to multiple displays using passive AC-coupled fanout. IC Role / Device Role / Timing Role: Input bias controller enabling consistent DC restoration across all three channels with one resistor. Use Value: Eliminates need for three discrete DC restorers; reduces BOM count and layout area while ensuring identical black-level reference. |
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-lead SSOP package, identical pinout, 650MHz small-signal BW but lower 190MHz FPBW; no BCV pin - fixed input bias only | Lacks programmable input bias; requires external DC restoration for AC-coupled inputs | Select when higher bandwidth is prioritized over bias flexibility and BCV control is unnecessary |
| LT6557CGN#TRPBF | Same 16-lead SSOP, 500MHz small-signal BW, 2200V/µs slew rate, but gain of 2 (not unity); no BCV pin | Requires external gain-setting resistors; incompatible pinout for direct replacement | Choose only if system requires gain-of-2 amplification and can accommodate different input bias architecture |
Compared with LT6558IGN#TRPBF, LT6554CGN#TRPBF offers higher bandwidth but removes programmable bias control, while LT6557CGN#TRPBF provides gain-of-2 but lacks BCV functionality and uses different gain topology - neither is pin-compatible nor functionally drop-in.
Availability
LT6558IGN#TRPBF is available at Aetrix Electronics and suitable for RGB HD video amplifiers, coaxial cable drivers, and single-supply ADC front-ends requiring stable component supply, long-term lifecycle assurance, and guaranteed industrial temperature operation (–40°C to 85°C).
Supply support for LT6558IGN#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 acquired Linear Technology in 2017 and maintains full technical and manufacturing continuity for legacy Linear products. Linear was renowned for precision analog and high-speed signal conditioning ICs.
The LT6558IGN#TRPBF belongs to Linear's high-speed video amplifier product line, designed specifically for broadcast, medical imaging, and professional video equipment requiring unity-gain, low-distortion, multi-channel buffering on single low-voltage supplies.
FAQ
What is the operating temperature range for LT6558IGN#TRPBF?
The LT6558IGN#TRPBF is specified for industrial operation from –40°C to +85°C. This grade ('I') is fully tested and guaranteed across that range, unlike the 'C' grade which is only characterized at 0°C to 70°C. Thermal design must ensure junction temperature stays below 150°C in the SSOP package, using the θJA = 110°C/W rating.
Does LT6558IGN#TRPBF support dual-supply operation?
Yes, LT6558IGN#TRPBF supports split supplies: connect all GND pins to the negative rail (e.g., –2.5V) and all V+ pins to the positive rail (e.g., +2.5V). The internal circuitry operates with total supply voltage from 3V to 7.5V, making ±2.5V to ±3.3V configurations viable. Input bias control remains functional with appropriate BCV resistor scaling.
How is input DC bias programmed on LT6558IGN#TRPBF?
Input DC bias is programmed by connecting a resistor (e.g., 158Ω) between BCV (Pin 16) and GND (Pin 2). This sets all three inputs to a common DC level - typically 2.5V on a 5V supply. Leaving BCV open disables the internal bias circuit, resulting in ~450kΩ input impedance suitable for DC-coupled or externally clamped designs.
What is the maximum load capacitance LT6558IGN#TRPBF can drive stably?
LT6558IGN#TRPBF remains stable driving up to 8.2pF capacitive load with 150Ω series resistance, as verified in the datasheet's frequency response plots. For larger capacitive loads (e.g., long PCB traces or connectors), a small series resistor (10–22Ω) at the output is recommended to maintain phase margin and prevent peaking above 100MHz.
Is LT6558IGN#TRPBF pin-compatible with other LT655x family members?
No, LT6558IGN#TRPBF is not pin-compatible with most LT655x variants. While LT6554CGN#TRPBF shares identical pinout and package, other members like LT6553, LT6557, or LT6556 use different pin functions (e.g., no BCV pin, different enable logic, or gain-setting resistors). Always verify pin mapping against the specific device's datasheet before substitution.
LT6558IGN#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
LT6558IGN#TRPBF FAQ
1.How can I place an order for LT6558IGN#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT6558IGN#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 LT6558IGN#TRPBF reliable?
The price and inventory of LT6558IGN#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT6558IGN#TRPBF is usually 5 days.
3.What payment methods are accepted for LT6558IGN#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT6558IGN#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT6558IGN#TRPBF?
LT6558IGN#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT6558IGN#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 LT6558IGN#TRPBF?
For technical support, including LT6558IGN#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT6558IGN#TRPBF requirements.
6.How does Aetrix verify that LT6558IGN#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT6558IGN#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 LT6558IGN#TRPBF meets industry standards.
7.What is the process for return or replacement of LT6558IGN#TRPBF?
All LT6558IGN#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT6558IGN#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 LT6558IGN#TRPBF part is unused and in its original packaging.
Return procedure for LT6558IGN#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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