Datasheet

Data Sheet AD9518-1
Rev. C | Page 55 of 64
Reg.
Addr.
(Hex)
Bits Name Description
0x0F3 4 OUT3 invert Sets the output polarity.
0: noninverting (default).
1: inverting.
[3:2]
OUT3 LVPECL
differential voltage
Sets the LVPECL output differential voltage (V
OD
).
3 2 V
OD
(mV)
0 0 400.
0 1 600.
1 0 780 (default).
1 1 960.
[1:0] OUT3 power-down LVPECL power-down modes.
1 0 Mode Output
0 0 Normal operation. On
0 1 Partial power-down, reference on; use only if there are no external load resistors. Off
1 0 Partial power-down, reference on, safe LVPECL power-down (default). Off
1 1 Total power-down, reference off; use only if there are no external load resistors. Off
0x0F4
4
OUT4 invert
Sets the output polarity.
0: noninverting (default).
1: inverting.
[3:2]
OUT4 LVPECL
differential voltage
Sets the LVPECL output differential voltage (V
OD
).
3 2 V
OD
(mV)
0 0 400.
0 1 600.
1
0
780 (default).
1
1
960.
[1:0] OUT4 power-down LVPECL power-down modes.
1
0
Mode
Output
0 0 Normal operation (default). On
0 1 Partial power-down, reference on; use only if there are no external load resistors. Off
1 0 Partial power-down, reference on, safe LVPECL power-down. Off
1 1 Total power-down, reference off; use only if there are no external load resistors. Off
0x0F5 4 OUT5 invert Sets the output polarity.
0: noninverting (default).
1: inverting.
[3:2]
OUT5 LVPECL
differential voltage
Sets the LVPECL output differential voltage (V
OD
).
3 2 V
OD
(mV)
0 0 400.
0 1 600.
1 0 780 (default).
1 1 960.
[1:0]
OUT5 power-down
LVPECL power-down modes.
1 0 Mode Output
0 0 Normal operation. On
0 1 Partial power-down, reference on; use only if there are no external load resistors. Off
1 0 Partial power-down, reference on, safe LVPECL power-down (default). Off
1 1 Total power-down, reference off; use only if there are no external load resistors. Off