OPA445AP datasheet(7/25 Pages) TI

7 / 25 page

OPA445

SBOS156B − MARCH 1987 − REVISED APRIL 2008

www.ti.com

TYPICAL CHARACTERISTICS (continued)

At TA = +25°C and VS = ±40V, unless otherwise noted.

−50

−25

100

125

Temperature (

_C)

MAXIMUM POWER DISSIPATION

vs TEMPERATURE

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

Plastic DIP

No Heat Sink

J (max)

TO−99: 150

DIP, SO: 125

TO−99

SO−8

Surface−Mount

(non PowerPAD)

−50

−25

100

125

Temperature (

_C)

MAXIMUM POWER DISSIPATION

vs TEMPERATURE

2.0

1.5

1.0

0.5

J (12 5_ Cma x) = TA +[(|V S | − |V O |) IO ×θ JA ]

JA =52_ C/ W, SO −8 Pow er PAD

(1in

× 0.5in heat−spreader, 1oz Copper)

J =2 5_ C + ( 1.93W × 52_ C/W ) = +1 25_ C

SO−8 PowerPAD:

J(max) = +125_ C

MAXIMUM OUTPUT VOLTAGE SWING

vs FREQUENCY

100k

Frequency (Hz)

10k

Maximum output

without slew−rate

induced distortion.

10pF

100pF

1nF

10nF

Load Capacitance

SMALL−SIGNAL OVERSHOOT

vs LOAD CAPACITANCE

−1

G= +1

−2

G= 10

SMALL−SIGNAL STEP RESPONSE

G= 1, C

L = 100pF

500ns/div

LARGE−SIGNAL STEP RESPONSE

G= 1, C

L = 100pF

2.5

µs/div

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