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參數資料
| 型號： | HCA10014 |
| 廠商： | Intersil Corporation |
| 英文描述： | Darlington Bipolar Transistor; Package/Case:TO-3; Current Rating:50A; Voltage Rating:120V |
| 中文描述： | 15MHz的，BiMOS運算放大器MOSFET的輸入/ CMOS輸出 |
| 文件頁數： | 15/17頁 |
| 文件大小： | 521K |
| 代理商： | HCA10014 |
15
The heart of the frequency determining system is an
operational transconductance amplifier (OTA) (see Note 9),
lC
1
, operated as a voltage controlled current source. The
output, I
O
, is a current applied directly to the integrating
capacitor, C
1
, in the feedback loop of the integrator lC
2
,
using a HCA10014, to provide the triangular wave output.
Potentiometer R
2
is used to adjust the circuit for slope
symmetry of positive going and negative going signal
excursions.
Another HCA10014, IC
3
, is used as a controlled switch to
set the excursion limits of the triangular output from the
integrator circuit. Capacitor C
2
is a “peaking adjustment” to
optimize the high frequency square wave performance of the
circuit.
Potentiometer R
3
is adjustable to perfect the “amplitude
symmetry” of the square wave output signals. Output from
the threshold detector is fed back via resistor R
4
to the input
of lC
1
so as to toggle the current source from plus to minus
in generating the linear triangular wave.
Operation with Output Stage Power Booster
The current sourcing and sinking capability of the
HCA10014 output stage is easily supplemented to provide
power boost capability. In the circuit of Figure 23, three
CMOS transistor pairs in a single CA3600E (see Note 11) lC
array are shown parallel connected with the output stage in
the HCA10014. In the Class A mode of CA3600E shown, a
typical device consumes 20mA of supply current at 15V
operation. This arrangement boosts the current handling
capability of the output stage by about 2.5X.
The amplifier circuit in Figure 23 employs feedback to
establish a closed loop gain of 48dB. The typical large signal
bandwidth (-3dB) is 50kHz.
NOTE:
8. See Document # 619 (CA3600E) for technical information.
7
4
6
3
2
R
1
100k
R
2
100k
R
3
100k
ON-PERIOD
ADJUST
1M
2k
2k
OFF-PERIOD
ADJUST
1M
+15V
0.01
μ
F
OUTPUT
2k
0.001
μ
F
0.01
μ
F
0.1
μ
F
1
μ
F
S
1
+
-
FIGURE21. PULSEGENERATOR (ASTABLE
MULTIVIBRATOR) WITH PROVISIONS FOR
INDEPENDENT CONTROL OF “ON” AND “OFF”
PERIODS
Frequency Range:
Position of S
1
0.001
μ
F
0.01
μ
F
0.1
μ
F
1
μ
F
Pulse Period
4
μ
s to 1ms
40
μ
s to 10ms
0.4ms to 100ms
4ms to 1s
HCA10014
HCA10014
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