PA93

4

PA93U

P r o d u c t I n n o v a t i o n F r o m

®

0

25

50

75

100

125

CASE TEMPERATURE, T

0

75

100

POWER DERATING

100k

FREQUENCY F (Hz)

135

90

PHASE RESPONSE

100K

FREQUENCY, F (Hz)

–10

0

30

SMALL SIGNAL RESPONSE

10

20

40

50

0

6

8

OUTPUT CURRENT, I

7

9

OUTPUT VOLTAGE SWING

6

8

1M

FREQUENCY, F (Hz)

10

100

400

0

.2

.3

.5

.6

RESISTOR VALUE, R

0

2

8

CURRENT LIMIT

4

6

10

60

EXT. COMPENSATION CAPACITOR, C

1

SLEW RATE

4

3

2

60

100

200 300

20

40

25

50

100

CASE TEMPERATURE, T

1.2

NORMALIZED QUIES. CURRENT

1.0

.1

.4

2

225

50

25

125

POWER RESPONSE

75

1M

10M

270

180

125

1.4

1.8

1.6

4

5

100K

40

20

10

8

6

30

30

1K

10K

1M

10M

C

C

C

C

FREQUENCY, F (Hz)

FREQUENCY, F (Hz)

HARMONIC DISTORTION

.01

.1

10K

100

1K

INPUT NOISE VOLTAGE

2

7

10

20

5

3

15

.001

P

P

P

C

C

C

C

C

C

C

C

10

100K

10K

1K

100

PHASE COMPENSATION

GAIN

C

R

C

≥1

220pF 100Ω

≥2

100pF 100Ω

≥4

47pF

0Ω

≥17

10pF

0Ω

*C

C

Nevertobe<10pF.C

voltage+V

GENERAL

PleasereadApplicationNote1"GeneralOperatingConsiderations"whichcoversstability,supplies,heatsinking,

mounting,currentlimit,SOAinterpretation,andspecificationinterpretation.Visitwww.Cirrus.comfordesigntools

thathelpautomatetaskssuchascalculationsforstability,internalpowerdissipation,currentlimit;heatsinkselec-

tion;ApexPrecisionPower’scompleteApplicationNoteslibrary;TechnicalSeminarWorkbook;andEvaluationKits.

CURRENT LIMIT

Forproperoperation,thecurrentlimitresistor(R

gram.Foroptimumreliabilitytheresistorvalueshouldbesetashighaspossible.Thevalueiscalculatedasfollows;

withthemaximumpracticalvalueof16ohms.

.65

R

I

LIM