鈥?/div>
VIDEO DISTRIBUTION AND AND AMPLIFICATION
HIGH SPEED DEFLECTION CIRCUITS
POWER TRANSDUCERS TO 5MHz
COAXIAL LINE DRIVERS
POWER LED OR LASER DIODE EXCITATION
DEFLECTION AMPLIFIER
(Figure 1)
The deflection amplifier circuit of Figure 1 achieves arbitrary
beam positioning for a fast heads-up display. Maximum tran-
sition times are 4碌s while delivering 2A pk currents to the
13mH coil. The key to this circuit is the sense resistor (R
S
)
which converts yoke current to voltage for op amp feedback.
This negative feedback forces the coil current to stay exactly
proportional to the control voltage. The network consisting of
R
D
, R
F
and C
F
serves to shift from a current feedback via R
S
to
a direct voltage feedback at high frequencies. This removes
the extra phase shift caused by the inductor thus preventing
oscillation. See Application Note 5 for details of this and other
precision magnetic deflection circuits.
DESCRIPTION
The PA09 is a high voltage, high output current operational
amplifier optimized to drive a variety of loads from DC through
the video frequency range. Excellent input accuracy is
achieved with a dual monolithic FET input transistor which is
cascoded by two high voltage transistors to provide outstand-
ing common mode characteristics. All internal current and
voltage levels are referenced to a zener diode biased on by
a current source. As a result, the PA09 exhibits superior DC
and AC stability over a wide supply and temperature range.
High speed and freedom from second breakdown is as-
sured by a complementary Power MOS output stage. For
optimum linearity, especially at low levels, the Power MOS
transistors are biased in the class A/B mode. Thermal shutoff
provides full protection against overheating and limits the
heatsink requirements to dissipate the internal power losses
under normal operating conditions. A built-in current limit
protects the amplifier against overloading. Transient induc-
tive load kickback protection is provided by two internal
clamping diodes. External phase compensation allows the
user maximum flexibility in obtaining the optimum slew rate
and gain bandwidth product at all gain settings. For continu-
ous operation under load, a heatsink of proper rating is
recommended.
This hybrid integrated circuit utilizes thick film (cermet) resistors,
ceramic capacitors and silicon semiconductor chips to maximize
reliability, minimize size and give top performance. Ultrasonically
bonded aluminum wires provide reliable interconnections at all
operating tempera-
tures. The 8-pin TO-3
+37V
di
package is hermetically
= 15A /碌s
C
C
2pF
dt
sealed and electrically
3
7
isolated. The use of
i = V
i
/R
S
V
I
4
8
com-pressible thermal
1
PA09
washers and/or im-
5
C
F
L
Y
proper mounting torque
470pF
13碌H
6
will void the product
R
D
1鈩?/div>
warranty. Please see
鈥?7V
R
F
12K
鈥淕eneral Operating
100
鈩?/div>
R
Considerations鈥?
.5
鈩?/div>
S
EQUIVALENT SCHEMATIC
2
3
D1
Q5
Q3
Q1
7
8
C1
Q2
Q4
Q6
Q7
1
Q13
Q8
Q12A
5
Q9
C2
Q12B
Q10
Q11
Q14
Q17
Q19
Q16
4
D3
Q15
Q18
D2
6
EXTERNAL CONNECTIONS
+V
S
3
BAL
2
1
PHASE COMPENSATION
OUT
GAIN
1
10
100
1000
C
C
100pF
15pF
5pF
none
R
C
200
鈩?/div>
0
鈩?/div>
0
鈩?/div>
none
R
T
+IN
R
S
鈥揑N
4
TOP VIEW
5
6
8
7
C
C
R
C
R
S
= (| +V
S
| + | 鈥揤
S
|) R
T
/1.6
R
C
NOTE: Input offset voltage trim optional. R
T
= 10K
鈩?/div>
MAX
鈥揤
S
C
C
FIGURE 1. PA09 AS DEFLECTION AMPLIFIER
APEX MICROTECHNOLOGY CORPORATION
鈥?TELEPHONE (520) 690-8600 鈥?FAX (520) 888-3329 鈥?ORDERS (520) 690-8601 鈥?EMAIL prodlit@apexmicrotech.com
PA09 產(chǎn)品屬性
1
集成電路 (IC)
線性 - 放大器 - 視頻放大器和頻緩沖器
Apex Precision Power®
通用
-
1
-
220 V/µs
70mA
4.5A
24 V ~ 80 V，±12 V ~ 40 V
表面貼裝
TO-3-8
TO-3-8
管件
598-1298
PA09相關(guān)型號(hào)PDF文件下載
-
型號(hào)
版本
描述
廠商
下載
-
英文版
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VIDEO POWER OPERATIONAL AMPLIFIERS
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英文版
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ETC
-
英文版
TABLE 4 GROUP A INSPECTION
ANPEC
-
英文版
OP-AMP,SINGLE,HYBRID,CANF,9PIN,METAL
-
英文版
Voltage-Feedback Operational Amplifier
ETC
-
英文版
TABLE 4 GROUP A INSPECTION
APEX
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PA0903DG-41
PDI
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DROP-IN ISO-ATTENUATOR
PDI
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DROP-IN ISO-ATTENUATOR
PDI
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英文版
DROP-IN ISO-ATTENUATOR
PDI
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英文版
DROP-IN ISO-ATTENUATOR
PDI
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英文版
DROP-IN ISO-ATTENUATOR
PDI
-
英文版
DROP-IN ISO-ATTENUATOR
PDI
1
2
3
4
