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參數資料
| 型號： | TK15125MTL |
| 廠商： | TOKO INC |
| 元件分類： | 消費家電 |
| 英文描述： | Dual Supply Grand Earthing System Audio Signal Mute IC |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PDSO14 |
| 封裝： | SOP-14 |
| 文件頁數： | 7/8頁 |
| 文件大小： | 118K |
| 代理商： | TK15125MTL |
July 1999 TOKO, Inc.
Page 7
TK15125
TIMING-CHART AND ACTION TIME AT MUTE
Test conditions: V
CC
=
±
5 V, Timing Capacitor = 0.047
μ
F
The following values are typical characteristics; accordingly they are not guaranteed values.
ATTACK ACTION START (MUTE ON)
When the attack action is started (‘mute on’ is initiated), the capacitor on Pin 13 starts to charge. The voltage at the
capacitor on Pin 13 rises by 1.8 V. The 1.8 V rise time can be calculated by the following equation:
Capacitance X 1.8 V
Charge Current
12
μ
A
When the capacitor of Pin 13 rises by 1.8 V to -3.2 V as detected by the upper limit circuit, the mute action functions
(V
SS
+ 1.8 V = -3.2 V). In this estimate, when the capacitor on Pin 13 has risen by 0.7 V to 0.8 V, the attenuation is
approximately 90% of the final attenuation achieved. This results in the following calculation and timing chart.
RELEASE ACTION START (MUTE OFF)
When the release action is started (‘mute off’ is initiated) the capacitor on Pin 13 starts to discharge. The voltage
at the capacitor on Pin 13 falls to V
SS
+ 10 mV. This fall time can be calculated by the following equation:
Capacitance X 1.8 V
T3
≈
3
μ
A
In this estimate, when the capacitor on Pin 13 has fallen to V
SS
+ 0.7 V to 0.8 V, the signal is restored to approximately
90% of its value. This results in the following calculation and timing chart:
Accordingly, the release action time is 12 msec
(T3 - T4 = 28 msec - 16 msec = 12 msec).
T2
≈
0.047
μ
F X 0.75 V
12
μ
A
= 7.1 msec
T1
≈
0.047
μ
F X 1.8 V
Capacitor pin voltage
-4 V
Control SW_on
-5 V
-3 V
T1
Pin 13
T2
Input
wave
Output
wave
1 2 3 4 5 6 7 8 (ms)
1
0
= 2.9 msec
This time is the attack time.
Capacitor pin voltage
-4 V
Control SW_off
-5 V
-3 V
T3
T4
Output
wave
10 20 30 (ms)
1
1
Pin 13
3
μ
A
= 16 msec
This time is the release time.
T4
≈
0.047
μ
F X 1.05 V
=
Disharge Current
=
0.047
μ
F X 1.8 V
= 28 msec
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相關代理商/技術參數 |
參數描述 |
|---|---|
| TK15125MTL/15125 | 制造商:TOKO 制造商全稱:TOKO, Inc 功能描述:Dual Supply Grand Earthing System Audio Signal Mute IC |
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| TK15210M | 制造商:TOKO 制造商全稱:TOKO, Inc 功能描述:Audio Analog Switch |
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