TK15325 查看數據表（PDF） - Toko America Inc
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TK15325 Datasheet PDF : 12 Pages
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TEST CIRCUITS AND METHODS
TK15325
SW6
SW7
VCC
SW3
50 kΩ
SW9
SW8
1 kHz 10 kHz
1 Vrms 1 Vrms
or
2 Vrms
~
~
10 kΩ
SW4
SW5
SW2
V~
V_
50 kΩ
33 µF +
SW1
THD
+
33 µF
SUPPLY CURRENT (FIGURE 1)
This current is a consumption current with a nonloading
condition.
1) Bias supply to Pins 2,4,9,11. (This condition is the same
with other measurements, omitted from the next for
simplicity)
2) Measure the inflow current to Pin 1 from VCC. This current is
the supply current.
VCC
A
50 K
50 K
CONTROL LOW/HIGH LEVEL (FIGURE 2)
This level is to measure the threshold level.
1) Input, the VCC to Pin 1 and input VEE to Pin 12. (This
condition is the same with other measurements, omitted
from the next for simplicity)
2) Input to Pin 4 with sine wave (f = 1 kHz, VIN = 1 Vrms).
3) Connect an oscilloscope to Pin 3.
4) Drop the control voltage gradually from 0 V until the
sine wave appears at the oscilloscope. This voltage is
the threshold level when the wave appears.
VCC
+
50 K
50 K
VEE
Figure 1
June 1999 TOKO, Inc.
+
~
Cont.
Figure 2
+
VEE
Page 3
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