LTC6405
2.7GHz, 5V, Low Noise, Rail-to-Rail Input Differential Amplifier/Driver
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Overview
Features and Benefits
- Low Noise: 1.6nV/√Hz RTI
- Low Power: 18mA at 5V
- Low Distortion (HD2/HD3):
- –82dBc/–65dBc at 50MHz, 2VP-P
- –97dBc/–91dBc at 25MHz, 2VP-P
- Rail-to-Rail Differential Input
- 4.5V to 5.25V Supply Voltage Range
- Fully Differential Input and Output
- Adjustable Output Common Mode Voltage
- 800MHz –3dB Bandwidth with AV = 1
- Gain-Bandwidth Product: 2.7GHz
- Low Power Shutdown
- Available in 8-Lead MSOP and 16-Lead 3mm × 3mm × 0.75mm QFN Packages
Product Details
The LTC6405 is a very low noise, low distortion, fully differential input/output amplifier optimized for 5V, single supply operation. The LTC6405 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 LTC6405 ideal for level shifting signals with a wide common mode range for driving 12-bit to 16-bit single supply, differential input ADCs.
A 2.7GHz gain-bandwidth product results in 65dB linearity for 50MHz input signals. The LTC6405 is unity gain stable and the closed-loop bandwidth extends from DC to 800MHz. The output voltage swing extends from near-ground to 4V, to be compatible with a wide range of ADC converter input requirements. The LTC6405 draws only 18mA, and has a hardware shutdown feature which reduces current consumption to 400μA.
The LTC6405 is available in a compact 3mm × 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.
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
Product Categories
Product Lifecycle
Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Evaluation Kits (1)
Documentation & Resources
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R532 Reliability Data3/26/2018
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DC1147A - Demo Manual7/15/2011
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High Speed Amplifiers/ADC Drivers4/29/2015
Tools & Simulations
LTspice
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
To launch ready-to-run LTspice demonstration circuits for this part:
Step 1: Download and install LTspice on your computer.
Step 2: Click on the link in the section below to download a demonstration circuit.
Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.
Models for the following parts are available in LTspice:
LTC6405
Sys-Parameter
Sys-Parameter Models for Keysight Genesys
Sys-Parameter models contain behavioral parameters, such as P1dB, IP3, gain, noise figure and return loss, which describe nonlinear and linear characteristics of a device.
Design Tool
ADIsimRF
ADIsimRF is an easy-to-use RF signal chain calculator. Cascaded gain, noise, distortion and power consumption can be calculated, plotted and exported for signal chains with up to 50 stages. ADIsimRF also includes an extensive data base of device models for ADI’s RF and mixed signal components.
ADI DiffAmpCalc™
ADI's new ADI DiffAmpCalc™ is a free, downloadable calculator for designing differential amplifier circuits. The tool is easy to use and features an interactive user interface to quickly get you up and running.
Product Recommendations
LTC6405 Companion Parts
Recommended Related Parts
Design Resources
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.
| Part Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
|---|---|---|---|---|
| LTC6405CMS8E#PBF | Material Declaration | Reliability Data | 8-Lead MSOP w/ EP | |
| LTC6405CMS8E#TRPBF | Material Declaration | Reliability Data | 8-Lead MSOP w/ EP | |
| LTC6405CUD#PBF | Material Declaration | Reliability Data | 16-Lead QFN (3mm x 3mm x 0.75mm w/ EP) | |
| LTC6405CUD#TRPBF | Material Declaration | Reliability Data | 16-Lead QFN (3mm x 3mm x 0.75mm w/ EP) | |
| LTC6405IMS8E#PBF | Material Declaration | Reliability Data | 8-Lead MSOP w/ EP | |
| LTC6405IMS8E#TRPBF | Material Declaration | Reliability Data | 8-Lead MSOP w/ EP | |
| LTC6405IUD#PBF | Material Declaration | Reliability Data | 16-Lead QFN (3mm x 3mm x 0.75mm w/ EP) | |
| LTC6405IUD#TRPBF | Material Declaration | Reliability Data | 16-Lead QFN (3mm x 3mm x 0.75mm w/ EP) | |
| Wafer Fabrication Data | R532 Reliability Data |
PCN-PDN Information
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Sample & Buy
Ordering FAQs
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Buy Now Pricing
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List Pricing
(*)The 1Ku 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 Analog Devices, Inc. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
Lead Times
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Sampling
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Evaluation Boards
Pricing displayed is based on 1-piece.
Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.