ADA4851-1/ADA4851-2/ADA4851-4

Rev. C | Page 6 of 20

ABSOLUTE MAXIMUM RATINGS

Table 4.

Parameter

Rating

Supply Voltage

12.6 V

Power Dissipation

See Figure 5

Common-Mode Input Voltage

Differential Input Voltage

Storage Temperature

−65°C to +125°C

Operating Temperature Range

−40°C to +125°C

Lead Temperature Range

JEDEC J-STD-20

Junction Temperature

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

specified for device soldered in circuit board for surface-mount

packages.

Table 5. Thermal Resistance

Package Type

Unit

6-lead SOT-23

170

°C/W

14-lead TSSOP

120

°C/W

8-lead MSOP

150

°C/W

Maximum Power Dissipation

The maximum safe power dissipation for the ADA4851-1/

ADA4851-2/ADA4851-4 is limited by the associated rise in

which is the glass transition temperature, the plastic changes its

properties. 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 junction temperature of 150°C for an

extended period of time can result in changes in silicon devices,

potentially causing degradation or loss of functionality.

quiescent power dissipation and the power dissipated in the die

due to the amplifiers’ drive at the output. The quiescent power

()

L

OUT

L

OUT

S

S

S

D

R

V

R

V

V

I

V

P

2

–

2

⎟

⎠

⎞

⎜

⎝

⎛

×

+

×

=

() (

)

L

S

S

S

D

R

V

I

V

P

2

4

/

+

×

=

Also, more metal directly in contact with the package leads and

Figure 5 shows the maximum safe power dissipation in the

package vs. the ambient temperature for the 6-lead SOT-23

(170°C/W), the 8-lead MSOP (150°C/W), and the 14-lead

values are approximations.

0

2.0

–55

125

AMBIENT TEMPERATURE (

°C)

1.5

1.0

0.5

–45 –35 –25 –15 –5

5

15 25 35 45 55 65 75 85 95 105 115

SOT-23-6

TSSOP

MSOP

Figure 5. Maximum Power Dissipation vs. Temperature for a 4-Layer Board

ESD 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 this product 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.