AD5410ACPZ AD [Analog Devices], AD5410ACPZ Datasheet - Page 27

• Manufacturer Part Number: AD5410ACPZ
• Description: Single Channel, 16-Bit, Serial Input, Current Source DAC
• Manufacturer: AD [Analog Devices]

Preliminary Technical Data
and a latch signal. The AD5410/AD5420 require a 24-bit data-
word with data valid on the rising edge of SCLK.
For all interfaces, the DAC output update is initiated on the
rising edge of LATCH. The contents of the registers can be read
using the readback function.
THERMAL AND SUPPLY CONSIDERATIONS
The AD5410/AD5420 is designed to operate at a maximum
junction temperature of 125°C. It is important that the device is
not operated under conditions that will cause the junction
temperature to exceed this value . Excessive junction
temperature can occur if the AD5410/AD5420 is operated from
the maximum AV
directly to ground. In this case the ambient temperature should
Table 23. Thermal and Supply considerations for each package
Maximum allowed power dissipation
when operating at an ambient
temperature of 85°C
Maximum allowed ambient
temperature when operating from a
supply of 40V/60V and driving 24mA
directly to ground.
Maximum allowed supply voltage
when operating at an ambient
temperature of 85°C and driving 24mA
directly to ground.
Figure 41. Maximum Power Dissipation Vs Ambient Temperature
2.5
1.5
0.5
2
1
0
40
45
DD
and driving the maximum current (24mA)
50
55
Ambient Temperature (°C)
60
65
TSSOP
T
J T
AI
T
J
J
DD
max
max
max
Θ
70
JA
×
−
−
−
Θ
P
T
T
D
JA
75
A
A
×
=
=
Θ
125
. 0
JA
80
125
027
TSSOP
LFCSP
42
−
=
−
85
125
×
85
85
Rev. PrE | Page 27 of 30
42
=
−
950
=
(
40
35
mW
×
V
. 0
027
be controlled or AV
depend on the device and package.
At maximum ambient temperature of 85°C the
AD5410/AD5420AREZ (24-lead TSSOP) can dissipate 950mW
and the AD5410/AD5420ACPZ (40-lead LFCSP) can dissipate
1.42W.
To ensure the junction temperature does not exceed 125°C
while driving the maximum current of 24mA directly into
ground (also adding an on-chip current of 3mA), AV
be reduced from the maximum rating to ensure the package is
not required to dissipate more power than stated above. See
Table 23, Figure 41 and Figure 42.
)
×
42
Figure 42. Maximum Supply Voltage Vs Ambient Temperature
65
60
55
50
45
40
35
30
25
=
25
79
°
C
35
LFCSP
T
J T
DD
T
AI
J
J
max
DD
should be reduced. The conditions will
max
max
45
Θ
JA
−
×
Ambient Temperature (°C)
−
−
P
Θ
T
D
T
JA
A
A
×
55
Θ
=
=
JA
125
. 0
125
027
=
28
−
125
AD5410/AD5420
−
85
65
×
85
−
28
=
(
60
. 1
=
42
×
53
W
. 0
TSSOP
LFCSP
75
V
027
)
DD
×
28
should
85
=
79
°
C