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參數資料
| 型號： | AD8178 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | 450 MHz, Triple 16 】 5 Video Crosspoint Switch |
| 中文描述： | 450兆赫，三16】5視頻交叉點開關 |
| 文件頁數： | 7/40頁 |
| 文件大小： | 545K |
| 代理商： | AD8178 |
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AD8178
ABSOLUTE MAXIMUM RATINGS
Rev. 0 | Page 7 of 40
Table 12.
Parameter
Analog Supply Voltage (V
POS
– V
NEG
)
Digital Supply Voltage (V
DD
– D
GND
)
Ground Potential Difference
(V
NEG
– D
GND
)
Maximum Potential Difference
(V
DD
– V
NEG
)
Common-Mode Analog Input Voltage
Rating
6 V
6 V
+0.5 V to –2.5 V
8 V
(V
NEG
– 0.5 V) to
(V
POS
+ 0.5 V)
±2 V
V
DD
(V
POS
– 1 V) to (V
NEG
+ 1 V)
Differential Analog Input Voltage
Digital Input Voltage
Output Voltage
(Disabled Analog Output)
Output Short-Circuit Duration
Storage Temperature Range
Operating Temperature Range
Lead Temperature
(Soldering, 10 sec)
Junction Temperature
Momentary
65°C to +125°C
40°C to +85°C
300°C
150°C
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 indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
THERMAL RESISTANCE
θ
JA
is specified for the worst-case conditions, that is, a device
soldered in a circuit board for surface-mount packages.
Table 13. Thermal Resistance
Package Type
PBGA
θ
JA
15
Unit
°C/W
POWER DISSIPATION
The AD8178 is operated with ±2.5 V or +5 V supplies and can
drive loads down to 100 Ω, resulting in a large range of possible
power dissipations. For this reason, extra care must be taken
when derating the operating conditions based on ambient
temperature.
Packaged in a 676-lead BGA, the AD8178 junction-to-ambient
thermal impedance (
θ
JA
) is 15°C/W. For long-term reliability,
the maximum allowed junction temperature of the die should
not exceed 150°C. Temporarily exceeding this limit may cause
a shift in parametric performance due to a change in stresses
exerted on the die by the package. Exceeding a junction
temperature of 175°C for an extended period can result in
device failure. The curve in Figure 4 shows the range of allowed
internal die power dissipations that meet these conditions over
the 40°C to +85°C ambient temperature range. When using
Table 13, do not include external load power in the maximum
power calculation, but do include load current dropped on the
die output transistors.
0
AMBIENT TEMPERATURE (°C)
M
3
4
5
6
7
8
9
10
15
25
35
45
55
65
75
85
T
J
= 150°C
Figure 4. Maximum Die Power Dissipation vs. Ambient Temperature
ESD CAUTION
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