Save time and deliver your solutions faster with ADI’s new suite of precision technology signal chains. Align your applications ranging from Smart Industry to Instrumentation, Electrification to Digital Health, to exactly the right precision technology combinations.

Tailor your signal chain with confidence

LTC6420-20

LAST TIME BUY

Dual Matched 1.8GHz Differential Amplifiers/ADC Drivers

Data Sheet Product Selection Table

Part Models: 4
1ku List Price: price unavailable

Viewing:

Overview

Matched Gain ±0.1dB
Matched Phase ±0.1° at 100MHz
Channel Separation 80dB at 100MHz
1.8GHz –3dB Bandwidth; Fixed Gain of 10V/V (20dB)
IMD3 = –84dBc at 100MHz, 2V_P-P
Equivalent OIP₃ = 46dBm at 100MHz
1nV/√Hz Internal Op Amp Noise

6.2dB Noise Figure
Differential Inputs and Outputs
Rail-to-Rail Output Swing
80mA Supply Current (240mW) per Amplifier
1.1V to 1.6V Output Common Mode Voltage, Adjustable
DC- or AC-Coupled Operation
20-Lead 3mm × 4mm × 0.75mm QFN Package

The LTC6420-20 is a dual high-speed differential amplifier targeted at processing signals from DC to 300MHz. The part has been specifically designed to drive 12-, 14- and 16-bit ADCs with low noise and low distortion, but can also be used as a general-purpose broadband gain block.

The LTC6420-20 is easy to use, with minimal support circuitry required. The output common mode voltage is set using an external pin, independent of the inputs, which eliminates the need for transformers or AC-coupling capacitors in many applications. The gain is internally fixed at 20dB (10V/V).

The LTC6420-20 saves space and power compared to alternative solutions using IF gain blocks and transformers. The LTC6420-20 is packaged in a compact 20-lead 3mm × 4mm QFN package and operates over the –40°C to 85°C temperature range.

Applications

Differential ADC Driver
Single Ended to Differential Conversion
IF Sampling (Diversity) Receivers
Broadband I/Q Amplifiers
Satellite Communications

Part Models: 4
1ku List Price: price unavailable

Documentation

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
LTC6420CUDC-20#PBF	20-Lead QFN (3mm x 4mm x 0.75mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC6420CUDC-20#TRPBF	20-Lead QFN (3mm x 4mm x 0.75mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC6420IUDC-20#PBF	20-Lead QFN (3mm x 4mm x 0.75mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC6420IUDC-20#TRPBF	20-Lead QFN (3mm x 4mm x 0.75mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Mar 20, 2024 - 23_0089 Obsolescence of Tower Fab3 (JAZZ-3) SBC35 Process
		PDN23_0089_Form Material_Report
LTC6420CUDC-20#PBF
LTC6420CUDC-20#TRPBF
LTC6420IUDC-20#PBF
LTC6420IUDC-20#TRPBF

This is the most up-to-date revision of the Data Sheet.

Software Resources

Can't find the software or driver you need?

Request a Driver/Software

Hardware Ecosystem

Parts	Product Life Cycle	Description
ADA4937-2	RECOMMENDED FOR NEW DESIGNS	Ultralow Distortion Differential ADC Driver (Dual)

Tools & Simulations

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.

Open Tool

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 Tool