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dc1846af

DEMO MANUAL DC1846A

QUICK START PROCEDURE

The DC1846A is easy to set up to evaluate the performance

of the LTC6947. Follow the procedure below.

The DC590 and FracNWizard application are required to

control the DC1846A through a personal computer (PC).

DC590 Configuration

Place the DC590 jumpers in the following positions (refer

to Figure 2):

JP4: EE – Must be in the EN position.

JP5: ISO – ON must be selected.

JP5: SW – ON must be selected.

JP6: VCCIO – 3.3V must be selected. This sets the SPI

port to 3.3V operation.

Connect the DC590 to one of your computer’s USB ports

with the included USB cable.

FracNWizard Installation

The FracNWizard software is used to communicate with

the LTC6947 synthesizer. It uses the DC590 to translate

between USB and SPI-compatible serial communica-

tions formats. It also includes advanced PLL design and

simulation capabilities. The following are the FracNWizard

system requirements:

• Windows Operating System: Windows XP, Windows

2003 Server, Windows Vista, Windows 7

• Microsoft .NET 3.5 SP1 or later

• Windows Installer 3.1 or later

• Linear Technology’s DC590 hardware

Figure 2. DC590 Jumper and Connector Locations

 

 

JP6 

jumpers 

J4, ribbon 

cable 

connection 

to the 

DC1846 

JP5 jumpers 

JP4 

jumper 

J3, USB 

connection 

to PC