PA79 Datasheet, PDF (4/10 Pages) Cirrus Logic – POWER OPERATIONAL AMPLIFIERS

PA79
Product Innova tionFrom
TYPICAL PERFORMANCE GRAPHS
POWER RESPONSE
350
GAIN = -50
300
250
GAIN = -100
200
150
100
50
NO COMPENSATION
0
1
10
100
1000
FREQUENCY, (KHz)
POWER SUPPLY REJECTION
100
-V_S
80
+V_S
60
40
20
CURRENT LIMIT
160
140
120
100
80
60
+V_S
40
20
–V_S
0
0
50
100
RESISTOR VALUE (Ω)
OUTPUT VOLTAGE SWING
12
10
-V_S SIDE DROP
8
6
+V_S SIDE DROP
4
2
POWER DERATING
30
TWO
25
AMPLIFIERS
LOADED
20
15
10 ^ONE
AMPLIFIER
5 ^LOADED
0
0 25 50 75 100 125
CASE TEMPERATURE, T_C (°C)
COMMON MODE REJECTION
140
120
100
80
60
40
20
0
100
1K
10K
FREQUENCY, (Hz)
0
0
50 100 150 200
PEAK TO PEAK LOAD CURRENT (mA)
0
1 10 100 1K 10K 100K
FREQUENCY (Hz)
OPEN LOOP GAIN
80
NO COMPENSATION
60
C_C = 2.7pF
40
C_C = 10pF
C_C = 22pF
20
0
33pF PIN 3 TO GND
-20 100K Ω +V_S TO PIN 3
R_C=3.3K Ω
-40
10K
100K
1M
FREQUENCY (Hz)
10M
PHASE RESPONSE
120
100
C_C = 22pF
80
C_C = 10pF
60
C_C = 2.7pF
40
20 _NO
0 COMPENSATION
-20
-40 ^{33pF PIN 3 TO GND}
-60
-80
100K Ω +V_S TO PIN 3
R_c = 3.3K Ω
10K
100K
1M
10M
FREQUENCY (Hz)
4
PA79U