LTC6406 - 3GHz, Low Noise, Rail-to-Rail Input Differential Amplifier/Driver

Features

  • Low Noise: 1.6nV/v√Hz RTI
  • Low Power: 18mA at 3V
  • Low Distortion (HD2/HD3):
      –80dBc/–69dBc at 50MHz, 2VP-P
      –104dBc/–90dBc at 20MHz, 2VP-P
  • Rail-to-Rail Differential Input
  • 2.7V to 3.5V Supply Voltage Range
  • Fully Differential Input and Output
  • Adjustable Output Common Mode Voltage
  • 800MHz –3dB Bandwidth with AV = 1
  • Gain-Bandwidth Product: 3GHz
  • Low Power Shutdown
  • Available in 8-Lead MSOP and Tiny 16-Lead 3mm x 3mm x 0.75mm QFN Packages

Typical Application

LTC6406 Typical Application
LTC6406 Typical Application

Description

The LTC6406 is a very low noise, low distortion, fully differential input/output amplifier optimized for 3V, single supply operation. The LTC6406 input common mode range is rail-to-rail, while the output common mode voltage is independently adjustable by applying a voltage on the VOCM pin. This makes the LTC6406 ideal for level shifting signals with a wide common mode range for driving 12-bit to 16-bit single supply, differential input ADCs.

A 3GHz gain-bandwidth product results in 70dB linearity for 50MHz input signals. The LTC6406 is unity gain stable and the closed-loop bandwidth extends from DC to 800MHz. The output voltage swing extends from near-ground to 2V, to be compatible with a wide range of ADC converter input requirements. The LTC6406 draws only 18mA, and has a hardware shutdown feature which reduces current consumption to 300µA.

The LTC6406 is available in a compact 3mm x 3mm 16-pin leadless QFN package as well as an 8-lead MSOP package, and operates over a –40°C to 85°C temperature range.

Packaging

For complete and up to date package information and drawings, please refer to our packaging page

QFN-16, MS-8

LTC6406 Package Drawing
LTC6406 Package Drawing

Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price (1-99) Price (1k)* RoHS Data
LTC6406CMS8E#PBF MSOP 8 C $4.91 $3.44 View
LTC6406CMS8E#TRPBF MSOP 8 C $3.50 View
LTC6406CUD#PBF QFN 16 C $4.91 $3.44 View
LTC6406CUD#TRPBF QFN 16 C $3.50 View
LTC6406IMS8E#PBF MSOP 8 I $5.41 $3.79 View
LTC6406IMS8E#TRPBF MSOP 8 I $3.85 View
LTC6406IUD#PBF QFN 16 I $5.41 $3.79 View
LTC6406IUD#TRPBF QFN 16 I $3.85 View
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* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Part Number Description Price Documentation
DC1058A-E Combo Demoboard for LTC2207 and LTC6406, req. DC718 $200.00
DC1147A-D LTC6406 demo circuit $100.00
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Companion Boards

Part Number Description Price Documentation
DC718C USB Data Acquisition Controller, for PScope Evaluation Kits (<135Mbps) $300.00
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Click here to view our complete list of demo boards

Applications

  • Differential Input ADC Driver
  • Single-Ended to Differential Conversion
  • Level-Shifting Ground-Referenced Signals
  • Level-Shifting VCC-Referenced Signals
  • High-Linearity Direct Conversion Receivers

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Design Tools

LTspiceIV

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Models for the following parts are available in LTspice IV:
LTC6406

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