AD5560 Analog Devices, Inc., AD5560 Datasheet - Page 50

• Manufacturer Part Number: AD5560
• Description: 1.2 A Programmable Device Power Supply With Integrated 16-bit Level Setting Dacs
• Manufacturer: Analog Devices, Inc.

AD5560
Table 23. Diagnostic Register
Address
0x7
Default
0x0000
Bit
15
14
13
12
11
10
9
8
7
Name
DIAG
select[3:0]
TSENSE
select[3:0]
Function
DIAG select selects the set of diagnostic signals that can be made available on MEASOUT. First, use MEASOUT
addressing (DPS Register 1) to select either the DIAG A or the DIAG B node to be made available on MEASOUT.
DIAG Select
0:3
4
5
6
7
8
9
10
11
12
13
14
15
VPTAT low/VPTAT high are temperature sensor devices in the middle of the enabled power stage, which gives a
voltage level that can be mapped back to the VTSD low and VTSD high reference points to get a temperature
value. These sensors are used in the thermal shutdown feature. See the Die Temperature Sensor and Thermal
Shutdown section.
VMID code is the midscale voltage of the DACs; the offset DAC has a direct effect on this voltage level.
VMIN code is the zero-scale voltage of the DACs; again the offset DAC has a direct effect.
The following codes allow selection of one of three sets of eight thermal diodes. The D+ of the selected thermal
diode is available on the GPO pin; the D− is on the AGND.
These thermal diodes are located across the die, in the cool parts and in the power stages. Diodes [16:23] are located
in the force amplifier NPNs (power output devices for supplying current). Similarly, Diodes [24:31] are located in
the force amplifier PNP devices (output devices for sinking current).
TSENSE Select
0:7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
Rev. B | Page 50 of 60
Selected
Measure Block
Disabled
Force amplifier
Measure block
DAC block
Data Bits, MSB First
Selected
Thermal Block
N/A—normal
GPO operation
Cool block
Force amplifier
PNPs
DIAG A
VPTAT low
for −273°C)
Disabled
Disabled
EXTFORCE1A
FINP
Output 2.5 mA
VTSD low (ref V
MI
MV
FORCE DAC
CLL DAC
CPL DAC
OSD DAC
Connected Sensor
No sensor connected
Cool end of high current drivers, hot side of digital
block
25 mA output stage
Hottest part of sensitive measurement circuitry
and cool part of force amplifier
Coolest end of force amplifier block
Coolest end of DACs
Beside TSENSE available on MEASOUT
Hottest part of DACs
Cool side of digital block
1A-1
1A-2
2A (similar location to VPTAT low for EXTFORCE2
range)
1B-1 (similar location to VPTAT low for EXTFORCE1
range)
1B-2
2B
1C-1
1C-2
DIAG B
Disabled
Disabled
EXTFORCE2A
FINM
Output 25 mA
VPTAT high
VTSD high (ref V for +130°C)
VMID Code
VMIN Code
VOS DAC
CLH DAC
CPH DAC
DGS DAC