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參數(shù)資料
| 型號： | CA3130EZ |
| 廠商： | INTERSIL CORP |
| 元件分類： | 運(yùn)動控制電子 |
| 英文描述： | 15MHz, BiMOS Operational Amplifier with MOSFET Input/CMOS Output |
| 中文描述： | OP-AMP, 15000 uV OFFSET-MAX, 15 MHz BAND WIDTH, PDIP8 |
| 封裝： | LEAD FREE, PLASTIC, MO-001-BA, DIP-8 |
| 文件頁數(shù)： | 13/17頁 |
| 文件大?。?/td> | 943K |
| 代理商： | CA3130EZ |
13
The heart of the frequency-determining system is an
operational-transconductance-amplifier (OTA) (see Note 10),
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 CA3130, 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 CA3130, 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 CA3130
output stage is easily supplemented to provide power-boost
capability. In the circuit of Figure 17, three CMOS transistor-
pairs in a single CA3600E (see Note 12) lC array are shown
parallel connected with the output stage in the CA3130. 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 CA3130 output
stage by about 2.5X.
The amplifier circuit in Figure 17 employs feedback to
establish a closed-loop gain of 48dB. The typical large-signal
bandwidth (-3dB) is 50kHz.
NOTE:
9. See file number 619 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
CA3130
-
+
FIGURE 15. PULSE GENERATOR (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
NOTE:
10. See file number 475 and AN6668 for technical information.
FIGURE 16. FUNCTION GENERATOR (FREQUENCY CAN BE VARIED 1,000,000/1 WITH A SINGLE CONTROL)
6
3
2
1
4
7
5
6
2
3
4
7
8
1
5
4
6
7
3
2
R
4
270k
+7.5V
VOLTAGE-CONTROLLED
CURRENT SOURCE
IC
1
3k
3k
10M
+7.5V
R
2
100k
SLOPE
SYMMETRY
ADJUST
VOLTAGE
CONTROLLED
INPUT
-7.5V
10k
10k
R
1
-7.5V
FREQUENCY
ADJUST
(100kHz MAX)
-7.5V
+7.5V
I
O
IC
2
+7.5V
C
1
100pF
INTEGRATOR
-7.5V
56pF
CA3130
+
-
CA3080A
(NOTE 10)
+
-
39k
3 - 30pF
C
2
HIADJUST
DETECTOR
THRESHOLD
150k
IC
3
+7.5V
CA3130
-
+
R
3
100k
AMPLITUDE
SYMMETRY
ADJUST
22k
-7.5V
CA3130, CA3130A
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