LTC6405
LAST TIME BUY2.7GHz, 5V, Low Noise, Rail-to-Rail Input Differential Amplifier/Driver
- Part Models
- 8
- 1ku List Price
- Starting From $4.12
Part Details
- 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
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
Documentation
Data Sheet 1
Reliability Data 1
User Guide 1
Design Note 1
Product Selector Card 1
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 Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| LTC6405CMS8E#PBF | 8-Lead MSOP w/ EP | ||
| LTC6405CMS8E#TRPBF | 8-Lead MSOP w/ EP | ||
| LTC6405CUD#PBF | 16-Lead QFN (3mm x 3mm x 0.75mm w/ EP) | ||
| LTC6405CUD#TRPBF | 16-Lead QFN (3mm x 3mm x 0.75mm w/ EP) | ||
| LTC6405IMS8E#PBF | 8-Lead MSOP w/ EP | ||
| LTC6405IMS8E#TRPBF | 8-Lead MSOP w/ EP | ||
| LTC6405IUD#PBF | 16-Lead QFN (3mm x 3mm x 0.75mm w/ EP) | ||
| LTC6405IUD#TRPBF | 16-Lead QFN (3mm x 3mm x 0.75mm w/ EP) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Jun 5, 2024 - 24_0003 Epoxy Change from Henkel 8290 to 8290A for MSOP Package (2) |
||
| LTC6405CMS8E#PBF | LAST TIME BUY | |
| LTC6405CMS8E#TRPBF | LAST TIME BUY | |
| LTC6405IMS8E#PBF | LAST TIME BUY | |
| LTC6405IMS8E#TRPBF | LAST TIME BUY | |
|
Feb 3, 2020 - 20_0128 Laser Top Mark for 8 Lead MSOP Packages Assembled in ADPG and UTAC |
||
| LTC6405CMS8E#PBF | LAST TIME BUY | |
| LTC6405CMS8E#TRPBF | LAST TIME BUY | |
| LTC6405IMS8E#PBF | LAST TIME BUY | |
| LTC6405IMS8E#TRPBF | LAST TIME BUY | |
|
Mar 20, 2024 - 23_0089 Obsolescence of Tower Fab3 (JAZZ-3) SBC35 Process |
||
| LTC6405CMS8E#PBF | LAST TIME BUY | |
| LTC6405CMS8E#TRPBF | LAST TIME BUY | |
| LTC6405CUD#PBF | LAST TIME BUY | |
| LTC6405CUD#TRPBF | LAST TIME BUY | |
| LTC6405IMS8E#PBF | LAST TIME BUY | |
| LTC6405IMS8E#TRPBF | LAST TIME BUY | |
| LTC6405IUD#PBF | LAST TIME BUY | |
| LTC6405IUD#TRPBF | LAST TIME BUY | |
This is the most up-to-date revision of the Data Sheet.
Hardware Ecosystem
Tools & Simulations
LTspice 2
- LTC6405 - Differential Amplifiers and ADC Drivers
- LTC6405 Demo Circuit - Fully Differential ADC Driver with Simplified Mixer and ADC Models
Models for the following parts are available in LTspice:
- LTC6405
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.
Open ToolADI 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.
Open ToolADIsimRF
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.
Open ToolLTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
Evaluation Kits
LTC6405 Demo Circuit