PA13A データシートの表示（PDF） - Apex Microtechnology
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PA13A Datasheet PDF : 7 Pages
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PA13 • PA13A
POWER RATING
TYPICAL APPLICATION
Not all vendors use the same method to rate the power han-
+73V
dling capability of a Power Op Amp. Apex Microtechnology
rates the internal dissipation, which is consistent with rating
methods used by transistor manufacturers and gives conser-
vative results. Rating delivered power is highly application
47µF
11,12
R CL+
2 9,10 .2Ω
.1µF
dependent and therefore can be misleading. For example,
the 135W internal dissipation rating of the PA13 could be ex-
2.5VP-P
1 PA13
3
pressed as an output rating of 260W for audio (sine wave) or
as 440W if using a single ended DC load. Please note that all
vendors rate maximum power using an infinite heatsink.
7,8 RCL–
5,6
.2Ω
RD
2K
THERMAL STABILITY
Apex Microtechnology has eliminated the tendency of class
A/B output stages toward thermal runaway and thus has vastly
47µF
–22V
.1µF
CF
50pF
RF
increased amplifier reliability. This feature, not found in most
other Power Op Amps, was pioneered by Apex Microtechnol-
1K
YOKE DRIVER: –V = L * 1
t
ogy in 1981 using thermistors which assure a negative tem- HIGH CURRENT ASYMMETRICAL SUPPLY
perature coefficient in the quiescent current. The reliability
benefits of this added circuitry far outweigh the slight increase
in component count.
7.8mH
4Ω
5Ap-p
RS
.5Ω
TYPICAL PERFORMANCE GRAPHS
POWER DERATING
140
BIAS CURRENT
2.5
CURRENT LIMIT
17.5
120
2.2
15.0
100
1.9
12.5
RCL = .06Ω, RFO = ∞
80
60
PA13
40
20
0
0 20 40 60 80 100 120 140
CASE TEMPERATURE, TC (°C)
SMALL SIGNAL RESPONSE
120
100
80
60
40
20
0
–20
1
10 100 1K 10K .1M 1M 10M
FREQUENCY, F (Hz)
1.6
1.3
1.0
.7
.4
–50 –25 0 25 50 75 100 125
CASE TEMPERATURE, TC (°C)
PHASE RESPONSE
0
–30
–60
–90
–120
–150
–180
–210
1
10 100 1K 10K .1M 1M 10M
FREQUENCY, F (Hz)
10.0
7.5
RCL = .18Ω, RFO = 0
V
O
=
0
5.0
2.5
V
O
=
–24V
V
O
=
24V
V
O
=
0
0
–50 –25 0 25 50 75 100 125
CASE TEMPERATURE, TC (°C)
POWER RESPONSE
100
68
| +VS | + | –VS | = 100V
46
32
22 | +VS | – | –VS | = 80V
15 | +VS | + | –VS | = 30V
10
6.8
4.6
10K
20K 30K 50K 70K .1M
FREQUENCY, F (Hz)
COMMON MODE REJECTION
120
100
4 80
60
PULSE RESPONSE
8
VIN = 5V, tr = 100ns
6
4
2
0
INPUT NOISE
100
70
50
PA13U
40
30
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