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ADA4891-4ARUZ-R7 Datasheet(PDF) 7 Page - Analog Devices

No. de pieza ADA4891-4ARUZ-R7
Descripción Electrónicos  Low Cost CMOS, High Speed, Rail-to-Rail Amplifiers
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Fabricante Electrónico  AD [Analog Devices]
Página de inicio  http://www.analog.com
Logo AD - Analog Devices

ADA4891-4ARUZ-R7 Datasheet(HTML) 7 Page - Analog Devices

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Data Sheet
ADA4891-1/ADA4891-2/ADA4891-3/ADA4891-4
Rev. F | Page 7 of 24
ABSOLUTE MAXIMUM RATINGS
Table 3.
Parameter
Rating
Supply Voltage
6 V
Input Voltage (Common Mode)
−VS − 0.5 V to +VS
Differential Input Voltage
±VS
Storage Temperature Range
−65°C to +125°C
Operating Temperature Range
−40°C to +125°C
Lead Temperature (Soldering, 10 sec)
300°C
Stresses at or above those listed under Absolute Maximum
Ratings may cause permanent damage to the product. This is a
stress rating only; functional operation of the product at these
or any other conditions above those indicated in the operational
section of this specification is not implied. Operation beyond
the maximum operating conditions for extended periods may
affect product reliability.
MAXIMUM POWER DISSIPATION
The maximum power that can be safely dissipated by the
ADA4891-1/ADA4891-2/ADA4891-3/ADA4891-4 is limited
by the associated rise in junction temperature. The maximum
safe junction temperature for plastic encapsulated devices is
determined by the glass transition temperature of the plastic,
approximately 150°C. Temporarily exceeding this limit can
cause a shift in parametric performance due to a change in the
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 still-air thermal properties of the package (θJA), the ambient
temperature (TA), and the total power dissipated in the package
(PD) can be used to determine the junction temperature of the die.
The junction temperature can be calculated as
TJ = TA + (PD × θJA)
(1)
The power dissipated in the package (PD) is the sum of the
quiescent power dissipation and the power dissipated in the
package due to the load drive for all outputs. It can be calculated by
PD = (VT × IS) + (VS − VOUT) × (VOUT/RL)
(2)
where:
VT is the total supply rail.
IS is the quiescent current.
VS is the positive supply rail.
VOUT is the output of the amplifier.
RL is the output load of the amplifier.
To ensure proper operation, it is necessary to observe the maxi-
mum power derating curves shown in Figure 6. These curves
are derived by setting TJ = 150°C in Equation 1. Figure 6 shows
the maximum safe power dissipation in the package vs. the
ambient temperature on a JEDEC standard 4-layer board.
0
0.5
1.0
2.0
1.5
–55
–35
–15
5
25
45
65
85
105
125
AMBIENT TEMPERATURE (°C)
14-LEAD TSSOP
8-LEAD SOIC_N
14-LEAD SOIC_N
5-LEAD SOT-23
8-LEAD MSOP
TJ = 150°C
Figure 6. Maximum Power Dissipation vs. Ambient Temperature
Table 4 lists the thermal resistance (θJA) for each ADA4891-1/
ADA4891-2/ADA4891-3/ADA4891-4 package.
Table 4.
Package Type
θJA
Unit
5-Lead SOT-23
146
°C/W
8-Lead SOIC_N
115
°C/W
8-Lead MSOP
133
°C/W
14-Lead SOIC_N
162
°C/W
14-Lead TSSOP
108
°C/W
ESD CAUTION


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