ADV7172/ADV7173
ABSOLUTE MAXIMUM RATINGS
1
PACKAGE THERMAL PERFORMANCE
V
AA
to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Voltage on Any Digital Input Pin . GND – 0.5 V to V
AA
+ 0.5 V
Storage Temperature (T
S
) . . . . . . . . . . . . . . –65°C to +150°C
Junction Temperature (T
J
) . . . . . . . . . . . . . . . . . . . . . +150°C
Lead Temperature (Soldering, 10 sec) . . . . . . . . . . . . +260°C
Analog Outputs to GND
2
. . . . . . . . . . . GND – 0.5 V to V
AA
NOTES
1
Stresses above those listed under Absolute Maximum Ratings may cause permanent
damage to the device. This is a stress rating only; functional operation of the device
at these or any other conditions above those listed in the operational sections of this
specification is not implied. Exposure to absolute maximum rating conditions for
extended periods may affect device reliability.
2
Analog output short circuit to any power supply or common can be of an indefinite
duration.
The 48-lead LQFP package is used for this device. The junction-
to-ambient (θ
JA
) thermal resistance in still air on a four layer
PCB is +54.6°C/W. The junction-to-case thermal resistance
(θ
JC
) is +16.7°C.
To reduce power consumption when using this part the user is
advised to run the part on a 3.3 V supply, turn off any unused
DACs. However, if 5 V operation is required the user can enable
Low Power mode by setting MR16 to a Logic 1. Another alter-
native way to further reduce power is to use external buffers that
dramatically reduce the DAC currents, the current can be low-
ered to as low as 5 mA (see Appendix 8 for more details) from a
nominal value of 36 mA.
The user must at all times stay below the maximum junction
temperature of +110°C. The following equation shows how to
calculate this junction temperature:
PIN CONFIGURATION
SCRESET/RTC
J
unction Temperature
= [V
AA
(I
DAC
+
I
CCT
)
× θ
JA
] +70°C
where
I
DAC
= 10 mA + (sum of the average currents consumed by each
powered-on DAC).
VSO
RESET
PAL NTSC
TTXREQ
CLOCK
CLAMP
TTX
R
SET1
GND
48 47 46 45 44 43 42 41 40 39 38 37
V
AA 1
P0
2
P1
3
P2
4
P3
5
P4
6
P5
7
P6
8
P7
9
CSO HSO
10
V
AA 11
GND
12
V
AA
V
REF
36
COMP1
35
DAC A
34
V
AA
33
DAC B
PIN 1
IDENTIFIER
ORDERING GUIDE
ADV7172/ADV7173
TOP VIEW
(Not to Scale)
32
V
AA
31
GND
30
V
AA
29
DAC C
28
DAC D
27
V
AA
26
GND
25
DAC E
Model
ADV7172KST
ADV7173KST
Temperature
Range
0°C to +70°C
0°C to +70°C
Package
Description
Plastic Thin
Quad Flatpack
Plastic Thin
Quad Flatpack
Package
Option
ST-48
ST-48
13 14 15 16 17 18 19 20 21 22 23 24
FIELD/VSYNC
HSYNC
SCLOCK
COMP2
BLANK
ALSB
GND
SDATA
R
SET2
GND
V
AA
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection.
Although the ADV7172/ADV7173 features proprietary ESD protection circuitry, permanent
damage may occur on devices subjected to high energy electrostatic discharges. Therefore,
proper ESD precautions are recommended to avoid performance degradation or loss of
functionality.
DAC F
WARNING!
ESD SENSITIVE DEVICE
REV. A
–9–
AD [ ANALOG DEVICES ]
