PA79 datasheet(5/10 Pages) CIRRUS

Part #	PA79

Description	Power Operational Amplifier

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Manufacturer	CIRRUS [Cirrus Logic]

Direct Link	http://www.cirrus.com

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

PA79

PA79U

5

-35

-25

-15

-5

5

15

25

35

C

C = 0pF

C

C = 1pF

C

C = 2.2pF

C

C = 10pF

C

C = 22pF

C

C = 5pF

LARGE SIGNAL GAIN vs. COMPENSATION, V

O = 50VP-P

A

V = +26

R

BIAS = 100K

R

F = 35.7K

R

G = 1.5K

R

L = 50K

V

S = ±50V

FREQUENCY, KHz

10

1K

100

10K

-35

-25

-15

-5

5

15

25

35

C

C = 0pF

C

C = 1pF

C

C = 2.2pF

C

C = 10pF

C

C = 22pF

C

C = 5pF

SMALL SIGNAL GAIN vs. COMPENSATION, V

O = 5VP-P

A

V = +26

R

BIAS = 100K

R

F = 35.7K

R

G = 1.5K

R

L = 50K

V

S = ±50V

FREQUENCY, KHz

10

1K

100

10K

FREQUENCY, KHz

10

1K

100

-35

-25

-15

-5

5

15

25

35

45

C

C = 0pF

C

C = 1pF

C

C = 2.2pF

C

C = 10pF

C

C = 22pF

C

C = 5pF

SMALL SIGNAL GAIN vs. COMPENSATION, V

O = 500mVP-P

A

V = +26

R

BIAS = 100K

R

C = 3.3K

R

F = 35.7K

R

G = 1.5K

R

L = 50K

V

S = ±50V

10K

GAIN vs. INPUT/OUTPUT SIGNAL LEVEL

-25

-15

-5

5

15

25

35

45

500 mV

P-P

50 V

P-P

5 V

P-P

A

V = +51

R

BIAS = 100K

R

C = OPEN

R

F = 75K

R

G = 1.5K

R

L = 50K

V

S = ±50V

FREQUENCY, KHz

10

1K

100

10K

SMALL SIGNAL OPEN LOOP PHASE

-90

-60

-30

0

30

60

90

120

150

180

C

S = 68pF

P

IN = -40dBm

R

BIAS = 100K

R

S = 48.7Ω

V

S = ±50V

FREQUENCY, KHz

100

1000

10

1

R

C = OPEN, CC = 0pF

R

C = 3.3K, CC = 1pF

R

C = 3.3K, CC = 2.2pF

R

C = 3.3K, CC = 5pF

R

C = 3.3K, CC = 10pF

R

C = 3.3K, CC = 22pF

SMALL SIGNAL OPEN LOOP PHASE, V

O = 250mVP-P

-90

-60

-30

0

30

60

90

120

150

180

C

S = 68pF

P

IN = -40dBm

R

BIAS = OPEN

R

S = 48.7Ω

FREQUENCY, KHz

100

1000

10

1

R

C = OPEN, CC = 0pF

R

C = 3.3K, CC = 1pF

R

C = 3.3K, CC = 2.2pF

R

C = 3.3K, CC = 5pF

R

C = 3.3K, CC = 10pF

R

C = 3.3K, CC = 22pF

SMALL SIGNAL OPEN LOOP GAIN

-20

0

20

40

60

80

100

FREQUENCY, KHz

100

C

S = 68pF

P

IN = -40dBm

R

BIAS = OPEN

R

S = 48.7Ω

V

S = ±50V

1000

10

1

R

C = OPEN, CC = 0pF

R

C = 3.3K, CC = 1pF

R

C = 3.3K, CC = 2.2pF

R

C = 3.3K, CC = 5pF

R

C = 3.3K, CC = 10pF

R

C = 3.3K, CC = 22pF

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