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PDF TK15323MTL Data sheet ( Hoja de datos )
| Número de pieza | TK15323MTL | |
| Descripción | Audio Analog Switch | |
| Fabricantes | TOKO | |
| Logotipo |  |
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FEATURES
s Wide Operating Voltage Range (3 to 14 V)
s Low Distortion (typ. 0.003%)
s Wide Dynamic Range (typ. 6 VP-P)
s Low Output Impedance (typ. 20 Ω)
s Low Switching Noise (typ. 3 mV)
TK15323
APPLICATIONS
s Audio Systems
s Radio Cassettes
Audio Analog Switch
DESCRIPTION
The TK15323M is an Analog Switch IC that was developed
for audio frequency. Function is to select one output from
two inputs in a device that includes two circuits, and the
channel can be changed by low level. The TK15323M has
a mono-power supply and the input bias is a supply type
from outside. Because the distortion is very low, the
TK15323M fits various signals switching. It is best suited
for Hi-Fi devices. Operating voltage is wide, the circuit
plan is simple. The TK15323M is available in a small
plastic surface mount package (SSOP-12).
ORDERING INFORMATION
TK15323M
Tape/Reel Code
TAPE/REEL CODE
TL: Tape Left
TK15323
1ch-in
VCC
Bch
OUT
Ach
1KEY
NC
GND
11 Bch
10 OUT
9 Ach
8 2 KEY
7 NC
2ch-in
BLOCK DIAGRAM
Ach
1ch-in
Bch
+
-
+
-
Ach
2ch-in
Bch
+
-
+
-
VCC
1 ch ou
1KEY
2 ch ou
2KEY
GND
June 1999 TOKO, Inc.
Page 1
1 page  
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
5 Page 
APPLICATION INFORMATION (CONT.)
TK15323
OUTPUT TERMINAL VOLTAGE DIFFERENCE
This parameter is the output voltage difference between Ach and Bch, and appears when the channel changes from Ach
to Bch, or changes to the reverse. Generally, this is called Switching Noise or Pop Noise. If this value is big and if this
noise is amplified by the final amplifier and is outputted by the speakers, then it appears as a Shock Sound. Output terminal
voltage difference of the TK15323M is a value that adds the internal bias difference and the off-set voltage difference. The
value of the TK15323M is very small; its maximum value is 3 mV. So almost the output bias difference will be decided by
the supply bias difference. Toko can offer the “Muting IC” if users wish to mute Switching Noise.
DIRECT TOUCH
The signal input terminals:
Internal circuits are operated by constant current circuit, even if VCC or GND is contacted, damage does not occur.
The signal output terminal:
Outflow or inflow current is decided by ability of final transistor, but protection circuit is not attached. If GND or VCC are
contacted damage may occur. Pay attention to long time contact. Do not supply over the maximum rating.
Referenced to GND, do not provide to all terminals over V +0.3 V or -0.3 V.
CC
DC SIGNAL INPUT
The output of the TK15323M has a saturation voltage (both VCC and GND sides about 1.0 V); accordingly the use of a DC
signal is not recommend (e.g., the pulse signal etc.)
NC TERMINAL
NC terminals are not wired inside IC by bonding wire. NC terminals are not tested so do not connect at outside.
June 1999 TOKO, Inc.
Page 11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet TK15323MTL.PDF ] | |
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