參數(shù)資料
型號(hào): TK15327M
廠商: TOKO Inc.
英文描述: Audio Analog Switch
中文描述: 音頻模擬開關(guān)
文件頁(yè)數(shù): 5/12頁(yè)
文件大?。?/td> 216K
代理商: TK15327M
June 1999 TOKO, Inc.
Page 5
TK15327
TEST CIRCUITS AND METHODS (CONT.)
RESIDUAL NOISE (FIGURE 7)
This value is not S/N ratio. This is a noise which occurs from
the device itself.
1) Connect V
to Pin 5, Pin 8 is low level or open.
2) Connect an AC volt meter to Pin 3.
3) Connect a capacitor from Pin 4 to GND.
4) Measure AC voltage of Pin 3. This value is the noise of
1-Ach. If the influence of noise from outside exists, use
optional filters.
5) Next, reverse conditions at Pin 5 and Pin 8.
6) Connect to GND through a capacitor from Pin 2.
7) Measure in the same way.
This value is the noise level of 1-Bch.
VCC
+
+
Figure 5
MAXIMUM INPUT LEVEL (FIGURE 6)
This measurement measures at output side.
1) Connect V
to Pin 5, Pin 8 is low level or open.
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, reverse conditions at Pin 5 and Pin 8.
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.
VCC
+
+
Figure 6
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