AD5560 Datasheet, PDF (48/68 Pages) Analog Devices – 1.2 A Programmable Device Power Supply with Integrated 16-Bit Level Setting DACs

AD5560
Data Sheet
Table 19. DPS Register 2
Address Default
0x3 0x0000 Bit
15
Name
SF0
14 SR[2:0]
13
12
11 GPO
10 SLAVE,
9 GANGIMODE
8 INT10K
7 Guard high-Z
6:0 Unused
Data Bits, MSB First
Function
System force and sense line addressing, SF0. Bit SF0 addresses each of the different
combinations of switching the system force and sense lines to the force and sense pins at the
DUT.
Guard High-Z
(Bit 7)
SFO SYS_SENSE Pin SYS_FORCE Pin GUARD/SYS_DUTGND Pin
0
0
Open
Open
Guard
0
1
Sense
Force
Guard
1
0
Open
Open
Open
1
1
Sense
Force
DUTGND
Slew rate control, SR2, SR1, SR0. Selects the slew rate for the main DAC output amp.
SR
Action
0
1 V/μs
1
0.875 V/μs
2
0.75 V/μs
3
0.62 V/μs
4
0.5 V/μs
5
0.43 V/μs
6
0.35 V/μs
7
0.3125 V/μs
General purpose output bit. The GPO bit can be used for any function, such as disconnecting
the decoupling capacitor to help speed up low current testing.
Ganging multiple devices increases the current drive available. Use these bits to enable
selection of the ganging mode and place the device in slave or master mode. In default
operation, each device is a master (gang of one). Figure 54 shows how the device is configured
in this mode.
SLAVE
Action
0
Master: MASTER_OUT = internally connects to active EXTFORCE1/
EXTFORCE2 output
1
Master: MASTER_OUT = master MI
2
SLAVE FV to EXTFORCE1/EXTFORCE2 connected internally to close the
FVAMP loop
3
SLAVE FI
Setting this bit high allows the user to connect an internal sense short resistor of 10 kΩ
between the force and the sense lines (closes SW11). This resistor is actually made up of series
4 kΩ resistors followed by a 2 kΩ switch and another 4 kΩ resistor. There is a 10 kΩ resistor that
can be connected between the FORCE and SENSE pins by use of SW11. This 10 kΩ resistor is
intended to maintain a force/sense connection when a DUT is not in place. It is not intended
to be connected when measurements are being made because this defeats the purpose of the
OSD circuit in identifying an open circuit between FORCE and SENSE. In addition, the sense
path has a 2.5 kΩ resistor in series; therefore, if the 10 kΩ switch is closed, errors may become
apparent when in high current ranges.
Set this bit high to high-Z the guard amplifier. This is required if using the GUARD/
SYS_DUTGND pin in the SYS_DUTGND function.
Set to 0.
Rev. D | Page 48 of 68