AD8276BRMZ datasheet(5/20 Pages) AD

Part #	AD8276BRMZ

Description	Low Power, Wide Supply Range, Low Cost Unity-Gain Difference Amplifiers

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AD8276/AD8277

Rev. A | Page 5 of 20

ABSOLUTE MAXIMUM RATINGS

Table 4.

Parameter

Rating

Supply Voltage

±18 V

Maximum Voltage at Any Input Pin

−VS + 40 V

Minimum Voltage at Any Input Pin

+VS − 40 V

Storage Temperature Range

−65°C to +150°C

Specified Temperature Range

−40°C to +85°C

Package Glass Transition Temperature (TG)

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

The θJA values in Table 5 assume a 4-layer JEDEC standard

board with zero airflow.

Table 5.

Package Type

θJA

Unit

8-Lead MSOP

135

°C/W

8-Lead SOIC

121

°C/W

14-Lead SOIC

105

°C/W

MAXIMUM POWER DISSIPATION

The maximum safe power dissipation for the AD8276/AD8277

is limited by the associated rise in junction temperature (TJ) on

the die. At approximately 150°C, which is the glass transition

temperature, the properties of the plastic change. Even temporarily

exceeding this temperature limit may change the stresses that the

package exerts on the die, permanently shifting the parametric

performance of the amplifiers. Exceeding a temperature of 150°C

for an extended period may result in a loss of functionality.

2.0

1.6

1.2

0.8

0.4

0

–50

0

–25

25

50

75

100

125

AMBIENT TEMERATURE (°C)

TJ MAX = 150°C

8-LEAD MSOP

θJA = 135°C/W

8-LEAD SOIC

θJA = 121°C/W

14-LEAD SOIC

θJA = 105°C/W

Figure 3. Maximum Power Dissipation vs. Ambient Temperature

SHORT-CIRCUIT CURRENT

The AD8276/AD8277 have built-in, short-circuit protection

that limits the output current (see Figure 25 for more information).

While the short-circuit condition itself does not damage the

part, the heat generated by the condition can cause the part to

exceed its maximum junction temperature, with corresponding

negative effects on reliability. Figure 3 and Figure 25, combined

with knowledge of the supply voltages and ambient temperature of

the part, can be used to determine whether a short circuit will

cause the part to exceed its maximum junction temperature.

ESD CAUTION

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