Linear Technology DC1540B Demo Manual page 14

DEMO MANUAL DC1540B
DC1361B – ADJUSTING THE MARGIN/TRIM RANGE AND RESOLUTION
OF THE OUTPUT VOLTAGES
The resolution and range can be adjusted for any output
on the DC1361B by simply replacing the below resistors.
Use the LTC2977 Resistor Selection Tool (spreadsheet) for
calculating resistors values and proper DAC range settings.
The design tool refers to R20. This is the upper divider
resistor which is 60.4kΩ inside the LTM4603.
The design tool refers to R10. This is the lower divider
resistor which is R (See Figure 9).
SET
14
CHANGE THESE RESISTORS TO ADJUST THE MARGIN RANGE/RESOLUTION
Figure 10. Margin/Trim Resistor Locations
The design tool refers to R30. This is the margin/trim
adjustment resistor.
On the DC1361B, the lower divider resistors (R10) are =
R for each channel = R21, R26, R29, R38, R48, R67,
SET
R73, R79.
On the DC1361B, the adjustment resistors (R30) are =
R55, R56, R57, R58, R59, R68, R74 and R80.
dc1540bf