TK15323 查看數據表（PDF） - Toko America Inc
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TK15323 Datasheet PDF : 12 Pages
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TK15323
TEST CIRCUITS AND METHODS (CONT.)
VCC
VCC
+
+
Cont.
+
+
Cont.
Figure 4
Figure 5
VOLTAGE GAIN (FIGURE 5)
This is the output level against input level.
1) Pin 5 is in the open condition, or high level.
2) Connect AC volt meters to Pin 4 and Pin 3.
(Using the same type meter is best)
3) Input a sine wave (f = max. 20 kHz, 1 Vrms) to Pin 4.
4) Measure the level of Pin 4 and name this V1.
5) Measure the level of Pin 3 and name this V2.
6) Calculate Gain = 20 Log (( |V2 - V1| )/V1)
V1<V2 + Gain, V1>V2 - Gain
This value is the voltage gain of 1-Ach.
7) Next, connect Pin 5 to the GND, or low level.
8) Input the same sine wave to Pin 2.
9) Measure and calculate in the same way.
This value is the maximum input level of 1-Bch.
MAXIMUM INPUT LEVEL (FIGURE 6)
This measurement measures at output side.
1) Pin 5 is in the open condition, or high level.
2) Connect a distortion analyzer and an AC volt meter to
Pin 3.
3) Input a sine wave (1 kHz) to Pin 4 and elevate the
voltage gradually until the distortion gets to
0.1%.
4) When the distortion amounts to 0.1%, stop elevating and
measure the AC level of Pin 3.
This value is the maximum input level of 1-Ach.
5) Next, connect Pin 5 to the GND, or low level.
6) Input the same sine wave to Pin 2.
7) Measure in the same way.
This value is the maximum input level of 1-Bch.
June 1999 TOKO, Inc.
Page 5
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