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부품번호 | TK15125M 기능 |
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기능 | Dual Supply Grand Earthing System Audio Signal Mute IC | ||
제조업체 | TOKO | ||
로고 | |||
TK15125
Dual Supply Grand Earthing System Audio Signal Mute IC
FEATURES
s Wide Voltage Range (±2.5 to ±5.5 V)
s High Volume Attenuation (typ. -89dB)
s Very Low Signal Distortion (typ. 0.0025%)
s High Maximum Input Voltage (max. 5.2 VP-P)
s Very Low Standby Current (typ. 0.6 mA)
s Minimal External Component Circuitry
APPLICATIONS
s Audio Systems
s Television
s VTR
s MD
s CD
DESCRIPTION
The TK15125M is a dual power supply Mute IC of the
Grand Earthing System that was developed as a low
frequency signal attenuator for audio products.
The mute function includes two channels which operate
simultaneously by one control key.
The optional time for the Attack/Release action can be set
up by an external timing control capacitor.
The TK15125M is available in a SOP-14 Surface Mount
Package.
TK15125
OUT/IN 1
IN/OUT 1
GND 1
GND 2
GND 3
IN/OUT 2
OUT/IN 2
VDD
MUTE-C
NC
NC
NC
CONTROL
VSS
BLOCK DIAGRAM
ORDERING INFORMATION
TK15125M
Tape/Reel Code
TAPE/REEL CODE
TL: Tape Left
July 1999 TOKO, Inc.
CONTROL DRIVER TIMING
Control
Lo: Mute off
Hi: Mute on
Page 1
TK15125
TYPICAL PERFORMANCE CHARACTERISTICS
TA = 25 °C, unless otherwise specified.
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
Mute: off
0.7
0.6
0.5
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
13 Mute: on
12
11
SUPPLY CURRENT
vs. TEMPERATURE
14
Mute: on
12
10
8
0.4
023456
VCC (±V)
10
023456
VCC (±V)
CONTROL THRESHOLD
VOLTAGE vs. TEMPERATURE
-3
-3.5
-4
-4.5
-5
-40 -20
0 20 40 60 80
TA (°C)
CHARGE CURRENT (Mute Pin)
vs. TEMPERATURE
16
15
14
13
12
11
10
-40 -20
0 20 40 60 80
TA (°C)
TOTAL HARMONIC DISTORTION
vs. FREQUENCY
1
1
6
-40 -20
0 20 40 60 80
TA (°C)
DISCHARGE CURRENT (Mute Pin)
vs. TEMPERATURE
4
3
2
0
-40 -20
0 20 40 60 80
TA (°C)
TOTAL HARMONIC DISTORTION
vs. OUTPUT VOLTAGE
0.1 0.1
0.01 0.01
0.001
0.01
Page 4
0.1 1
f (kHz)
10 100
0.001
0.01
0.1 1
VOUT (VP-P)
10 100
July 1999 TOKO, Inc.
4페이지 TK15125
TIMING-CHART AND ACTION TIME AT MUTE
Test conditions: VCC = ±5 V, Timing Capacitor = 0.047 µF
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:
T1 ≈ Capacitance X 1.8 V =
Charge Current
0.047 µF X 1.8 V
12 µA
= 7.1 msec
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
(VSS + 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.
T2 ≈ 0.047 µF X 0.75 V
12 µA
= 2.9 msec
This time is the attack time.
Control SW_on
-3 V
Pin 13
-4 V
Capacitor pin voltage
-5 V
1 2 3 4 5 6 7 8 (ms)
T1
T2
Input
wave
Output
wave
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 VSS + 10 mV. This fall time can be calculated by the following equation:
T3 ≈ Capacitance X 1.8 V =
Disharge Current
0.047 µF X 1.8 V
3 µA
= 28 msec
In this estimate, when the capacitor on Pin 13 has fallen to VSS + 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:
T4 ≈ 0.047 µF X 1.05 V
3 µA
= 16 msec
This time is the release time.
Accordingly, the release action time is 12 msec
(T3 - T4 = 28 msec - 16 msec = 12 msec).
Control SW_off
-3 V
-4 V Pin 13
-5 V
10 20 30 (ms)
T3
T4
Capacitor pin voltage
Output
wave
July 1999 TOKO, Inc.
Page 7
7페이지 | |||
구 성 | 총 8 페이지수 | ||
다운로드 | [ TK15125M.PDF 데이터시트 ] |
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부품번호 | 상세설명 및 기능 | 제조사 |
TK15125 | Dual Supply Grand Earthing System Audio Signal Mute IC | TOKO |
TK15125M | Dual Supply Grand Earthing System Audio Signal Mute IC | TOKO |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |