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參數(shù)資料
| 型號： | TK15210 |
| 廠商： | TOKO Inc. |
| 英文描述： | Audio Analog Switch |
| 中文描述： | 音頻模擬開關(guān) |
| 文件頁數(shù)： | 9/12頁 |
| 文件大?。?/td> | 94K |
| 代理商： | TK15210 |
January 2000 TOKO, Inc.
Page 9
TK15210
APPLICATION INFORMATION
KEY INPUT CIRCUIT
Figure 10 illustrates the KEY input equivalent circuit. When
the control pin is open, the input is pulled up to a high level
(approximately 1.4 V). This applies the channel A input
signal to the output. A low level changes the output to the
channel B input signal. When the control terminal is pulled
low, a current up to 30
μ
A may flow out of the terminal. For
this reason, an external resistor value must be selected
which results in a voltage of less than 0.8 V to maintain a low
condition.
SWITCHING TIME
This time is the signal change response time compared to
the control key input signal. Figure 11 illustrates the timing
chart. T = 2
μ
s typically.
APPLICATION
Figure 12 illustrates an example of a typical application.
The standard application is to use capacitor coupling at the
inputs and output of the TK15210M. For characteristics of
distortion and dynamic range versus R
, refer to the graphs
in the Typical Performance Characteristics. The TK15210M
can also be used with direct coupling, but the characteristics
will get worse (distortion, etc.). If direct coupling is desired,
then it is recommended to use external circuitry that is
biased compatible with the TK15210M.
CROSS TALK
Figure 13 is an example of a layout pattern. In the
application of the TK15210M, the following must be
considered. Because of the high impedance at the inputs,
the capacitors can act as antennas to each other. If the
parts are bigger, and the space between the capacitors is
too narrow, then cross talk will increase. Therefore, when
designing the printed circuit pattern, separate the input
capacitors as far as possible and use as small a part as
possible (e.g., surface mount types, etc.).
Key in
to Logic
Figure 10
Key in
Bch (Ach)
SW out
50%
Ach (Bch)
t
Figure 11
VCC
+
+
33 μF
Key
+
+
inA
10 μF
10 μF
out
RL
10 μF
inB
Figure 12
Figure 13
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TK15210M | Audio Analog Switch |
| TK15210MTL | Audio Analog Switch |
| TK15211 | Audio Analog Switch |
| TK15211M | Audio Analog Switch |
| TK15211MTL | Audio Analog Switch |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TK15210M | 制造商:TOKO 制造商全稱:TOKO, Inc 功能描述:Audio Analog Switch |
| TK15210MTL | 制造商:TOKO 制造商全稱:TOKO, Inc 功能描述:Audio Analog Switch |
| TK15210MTL/S1 | 制造商:TOKO 制造商全稱:TOKO, Inc 功能描述:Audio Analog Switch |
| TK15211 | 制造商:TOKO 制造商全稱:TOKO, Inc 功能描述:Audio Analog Switch |
| TK15211M | 制造商:TOKO 制造商全稱:TOKO, Inc 功能描述:Audio Analog Switch |
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