Frequently Asked Questions - Analog Devices Linear Technology LTC6953 Demo Manual

DEMO MANUAL DC2610A
DC2610A RECONFIGURATION
Table 3. LTC6953 Sync Mode Programming Options
SYNC/SYSREF EZS_SRQ Pins
Method State
EZS_SRQ Pin Differential, CML
or LVPECL
Differential LVDS
+
EZS_SRQ : CMOS
–
EZS_SRQ
+
SSRQ Register Bit EZS_SRQ
–
EZS_SRQ

FREQUENTLY ASKED QUESTIONS

1. Can the LTC6952Wizard control a LTC6953 on a board other than the DC2610A?
Yes, follow these steps.
Step 1: Configure the DC2026 for 3.3V SPI as shown in Figure 2
Step 2: Connect the DC2026 J1 connector SPI pins to the LTC6953 SPI pins. Refer to page two of the DC2610A sche-
matic for pin assignments.
2. Does the LTC6953 have Linduino Code available?
Yes, download the LTC6953 sketch in the LTSketchbook. To use the LTSketchbook and for instructions on how to
start using Linduino refer to the Linduino QuickStart tab at http://www.linear.com/solutions/linduino. This will give
programmers a head start in writing code for the LTC6953. It is recommended to use LTC6952Wizard to create the
best possible register settings for all conditions. These LTC6953 register settings from LTC6952Wizard can be pro-
grammed in a lookup table.
6
R27 (Ω) R24 (Ω)
DNI DNI
100 100
200k 0
: GND
: GND 200k 0
: GND
Board Modifications (DNI = Do Not Install)
R25 (Ω) R28 (Ω)
100 0
750 50
DNI 0
DNI 0
R23 (Ω) R39 (Ω) R38 (Ω)
0 DNI
50 130
0 DNI
0 DNI
DNI
130
DNI
DNI
dc2610af