PA92 데이터 시트보기 (PDF) - Cirrus Logic
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PA92 Datasheet PDF : 6 Pages
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30
CC = 10pF
20
10
PA902
–10
100K
60
40
30
20
1M
10M
FREQUENCY, F (Hz)
SLEW RATE
10
8
6
4
3
2
7.5
7.0
®
Product Innovation From
6.5
0
1
2
3
4
OUTPUT CURRENT, IO (A)
HARMONIC DISTORTION
.1
PO = 1W
PO = 20W
PO = 62W
.01
100
CC = 10pF
CC = 47pF
CC = 100pF
CC = 150pF
10
1K
10K
100K
1M
FREQUENCY, F (Hz)
INPUT NOISE VOLTAGE
20
15
10
7
5
3
1
10
30 60 100 200 300
EXT. COMPENSATION CAPACITOR, CC (pF)
CURRENT LIMIT
4
.001
100
1K
10K
FREQUENCY, F (Hz)
2
10
100
1K
10K 100K
FREQUENCY, F (Hz)
3
2
1
0
0.0 0.2 0.4 0.6 0.8 1.0 1.2
RESISTOR VALUE, RCL (Ω)
PHASE COMPENSATION
GAIN
CC*
RC
≥1
150pF 100Ω
≥2
100pF 100Ω
≥3
47pF
0Ω
≥12
10pF
0Ω
*CC Never to be <10pF. CC to be rated for the full supply
voltage +V to -Vs. Use ceramic NPO (COG) type.
GENERAL
Please read Application Note 1 "General Operating Considerations" which covers stability, supplies, heat sinking,
mounting, current limit, SOA interpretation, and specification interpretation. Visit www.cirrus.com for design tools
that help automate tasks such as calculations for stability, internal power dissipation, current limit; heat sink selec-
tion; Apex Precision Power’s complete Application Notes library; Technical Seminar Workbook; and Evaluation Kits.
CURRENT LIMIT
For proper operation, the current limit resistor (RCL) must
be connected as shown in the external connection dia-
gram. For optimum reliability the resistor value should be
set as high as possible. The value is calculated as fol-
lows; with the maximum practical value of 16 ohms.
RCL = .IL6I M5
SAFE OPERATING AREA (SOA)
The MOSFET output stage of this power operational am-
plifier has two distinct limitations:
1. The current handling capability of the MOSFET geom-
etry and the wire bonds.
2. The junction temperature of the output MOSFETs.
NOTE: The output stage is protected against transient
flyback. However, for protection against sustained, high
energy flyback, external fast-recovery diodes should be
used.
SOA
8
6
DC, TC = 25C
4
200mS
2
1
100mS
.8
.6
T
T
C = 85C
.4
.3
C = 125C
.2
.1
.08
.06
.04
10
20 30 40 60 80 100 200 300 500
SUPPLY TO OUTPUT DIFFERENTIAL, VS –VO (V)
4
PA92U
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