LTC6409 - 10GHz GBW, 1.1nV/√Hz Differential Amplifier/ADC Driver

The LTC6409 is a very high speed, low distortion, differential amplifier. Its input common mode range includes ground, so that a ground-referenced input signal can be DC-coupled, level-shifted, and converted to drive an ADC differentially.

The gain and feedback resistors are external, so that the exact gain and frequency response can be tailored to each application. For example, the amplifier could be externally compensated in a no-overshoot configuration, which is desired in certain time-domain applications.

The LTC6409 is stable in a differential gain of 1. This allows for a low output noise in applications where gain is not desired. It draws 52mA of supply current and has a hardware shutdown feature which reduces current consumption to 100μA.

The LTC6409 is available in a compact 3mm × 2mm 10‑pin leadless QFN package and operates over a –40°C to 125°C temperature range.

  • 10GHz Gain-Bandwidth Product
  • 88dB SFDR at 100MHz, 2VP-P
  • 1.1nV/√Hz Input Noise Density
  • Input Range Includes Ground
  • External Resistors Set Gain (Min 1V/V)
  • 3300V/μs Differential Slew Rate
  • 52mA Supply Current
  • 2.7V to 5.25V Supply Voltage Range
  • Fully Differential Input and Output
  • Adjustable Output Common Mode Voltage
  • Low Power Shutdown
  • Small 10-Lead 3mm × 2mm × 0.75mm QFN Package
Typical Application
LTC6409 Typical Application
LTC6409 Typical Application
  • Differential Pipeline ADC Driver
  • High-Speed Data-Acquisition Cards
  • Automated Test Equipment
  • Time Domain Reflexometry
  • Communications Receivers
LTC6409 Package Drawing
Order Information
Part NumberPackageTempPrice(1-99)Price (1k)*
LTC6409CUDB#PBF3x2 QFN-10C$6.39
LTC6409CUDB#TRMPBF3x2 QFN-10C$6.34$4.55
LTC6409CUDB#TRPBF3x2 QFN-10C$4.50
LTC6409HUDB#PBF3x2 QFN-10H$7.96
LTC6409HUDB#TRMPBF3x2 QFN-10H$7.91$5.68
LTC6409HUDB#TRPBF3x2 QFN-10H$5.63
LTC6409IUDB#PBF3x2 QFN-10I$7.02
LTC6409IUDB#TRMPBF3x2 QFN-10I$6.97$5.00
LTC6409IUDB#TRPBF3x2 QFN-10I$4.95
Demo Boards
Part NumberDescriptionPrice
DC1591ALTC6409 | 10GHz, 1nV/rt(Hz) Differential Amplifier/ADC Driver$150.00
DC1760ALTC2261-14 + LTC6409 ADC and Driver Combo Board,DC-100MHz, CMOS Outputs, req DC890 and DC1075$200.00
DC1945ALTC2185 and LTC6409 Combo Board with differential inputs, req DC890, LVDS_XFMR and DC1075$200.00
DC2266ALTC2107 + LTC6409 Demo Board | 16-Bit, 210Msps ADC and Driver Combo Board, DC-100MHz Input, DDR LVDS Outputs, (req DC1371 and DC2219)$200.00
Companion Boards
Part NumberDescriptionPrice
DC1075AClock Divider board$50.00
DC890BUSB Data Acquisition Controller, for PScope Evaluation Kits (up to 250Mbps, CMOS/LVDS)$300.00
DC1371BFMC High-Speed Data Acquisition Board$1,950.00
DC2219ASingle-Ended to Differential Adaptor Board for High-Speed ADC Demoboards$50.00
Reliability Data
Product Selector Card
Press Release
CAD Symbol
Related Products
LTC6409 - 10GHz GBW、1.1nV/√Hz 差分放大器 / ADC 驱动器
LTC6409 - 10GHz GBW, 1.1nV/√Hz Differential Amplifier/ADC Driver
低噪声和低失真的差分放大器驱动以地为基准、DC 耦合的 100MHz 信号
R561 - Reliability Data
High Speed Amplifiers/ADC Drivers
Differential Amplifier Drives DC-Coupled, Ground-Referenced 100MHz Signals with Low Noise & Low Distortion
LTC6409 Footprints and Symbols
88dB SFDR @ 100MHz