TOKO TK15329MTL Datasheet
TK15329
Audio Analog Switch
FEATURES
■ Wide Operating Voltage Range (2 to 14 V)
■ Low Distortion (typ. 0.004%)
■ Wide Dynamic Range (typ. 6 V
P-P
)
■ Low Output Impedance (typ. 20 Ω)
■ Low Switching Noise (typ. 3 mV)
■ Output Parallel Connection Possible
DESCRIPTION
The TK15329M is an Analog Switch IC that was developed
for audio frequency. The function is to select one output
from two inputs and has a floating position too. The
channel can be changed by two control levels and the
device includes two circuits. The TK15329M has a
mono-power supply and the input bias is a supply type
from outside. Because the distortion is very low, the
TK15329M fits various signals switching. It is best suited
for Hi-Fi devices. Operating voltage is wide, the circuit
plan is simple. The TK15329M is available in a small
plastic surface mount package (SSOP-12).
APPLICATIONS
■ Audio Systems
■ Radio Cassettes
1ch-in 2ch-in
TK15329
V
CC
Bch
OUT
Ach
1KEY
NC
GND
Bch
11
OUT
10
9
Ach
2 KEY
8
NC
7
BLOCK DIAGRAM
V
CC
1 ch out
2 ch out
1KEY
2KEY
GND
ORDERING INFORMATION
TK15329M
Tape/Reel Code
TAPE/REEL CODE
TL: Tape Left
1ch-in
2ch-in
Ach
Bch
Ach
Bch
+
-
+
-
+
-
+
-
Logic
June 1999 TOKO, Inc. Page 1
TK15329
Logic
Input Key
ABSOLUTE MAXIMUM RATINGS
Supply Voltage ......................................................... 15 V
Power Dissipation (Note 5) ................................ 350 mW
Storage Temperature Range ................... -55 to +150 °C
ANALOG SWITCH SECTION
Signal Input Voltage ........................ -0.3 V to VCC + 0.3 V
Signal Output Current ............................................. 3 mA
Operating Temperature Range ...................-20 to +75 °C
CONTROL SECTION
Input Voltage ................................... -0.3 V to VCC + 0.3 V
Operating Voltage Range................................. 2 to 14 V
Maximum Input Frequency..................................100 kHz
TK15329M ELECTRICAL CHARACTERISTICS
Test conditions: V
LOBMYSRETEMARAPSNOITIDNOCTSETNIMPYTXAMSTINU
I
CC
V
LI
V
HI
Z
NI
DHTnoitrotsiDcinomraHlatoTV
N
L
OSInoitalosI
= 8.0 V, T
CC
= 25 °C, unless otherwise specified.
A
tnerruCylppuS 5.35.5Am
NOITCESLORTNOCYEK
leveLwoLegatloVtupnI1etoN3.0-8.0+V
leveLhgiHegatloVtupnI8.1V
ecnadepmItupnI 05kΩ
NOITCESHCTIWSGOLANA
NI
esioNlaudiseR2etoN01smrVµ
V
NI
3etoN
3.0+V
CC
zHk1=f,smrV1=300.0600.0%
,zHk01=F,smrV1=
57-Bd
PESnoitarapeS
V
NI
3etoN
,zHk01=f,smrV1=
08-Bd
NYDleveLlangiStupnImumixaM%1.0=DHT,zHk1=f0.2smrV
AVGniaGegatloVzHk02~=f0Bd
V
tnec
∆V
tnec
I
NI
Z
TUO
Note 1: The KEY input equivalent circuit is shown in Figure A.
When the control pin is open, it is outputted at low level. The TK15329M is controlled
by two values and the function table is described in the block diagram.
Note 2: The specification means a value as measurement-input terminal connects to ground
through a capacitor.
Note 3: ISO is a cross talk between A channel and B channel, SEP is a cross talk between 1
channel and 2 channel. The specification means a value as measurement-input
termianl connects to ground through 10 kΩ resistor and capacitor.
Note 4: The standard application of the TK15329M is the direct connecting. In case of the
capacitor connecting, the to supply a bias voltage from outside is unnecessary.
Note 5: Power dissipation is 350 mW when mounted as recommended. Derate at 3.0 mW/
°C for operation above 25°C.
egatloV
ecnereffiD
lanimreTtuptuO-tupnI
egatloVlanimreTtuptuO
tnerruCsaiBtupnI4etoN5.0Aµ
ecnadepmItuptuOecnadepmICD02
V
TUO
edistuomorf
egatlovylppuS=
V
2.0-V
TUO
V
TUO
TUO
lennahcemasneewteB37Vm
V
CC
Input
Figure A
2.0+V
Ω
Figure B
Page 2 June 1999 TOKO, Inc.
TEST CIRCUITS AND METHODS
V
CC
TK15329
33 µF
+
SW6
SW7
1 kHz
1 Vrms
or
2 Vrms
SW9
~
10 kHz
1 Vrms
~
SW8
10 kΩ
1: The above condition represents 1ch.
2: The above conditions distortion rate of 1-Ach and dynamic range measurement.
3: SW5 is for residual noise measurement.
4: SW8 is for cross talk (ISO or SEP) measurement.
SUPPLY CURRENT (FIGURE 1)
SW5
VCC / 2
10 µF
SW3
SW4
+
10 µF
+
50 kΩ 50 kΩ
SW2
V
~
SW1
LH
V
THD
_
CC
LH
AV
This current is a consumption current with a nonloading
condition.
50 K
50 K
1) Bias supply to Pin 2, 4, 9, 11. (This condition is the same
with other measurements, omitted from the next for
simplicity)
50 K
50 K
2) Connect Pin 5 to VCC, Pin 8 is inthe open condition or low
level.
3) Measure the inflow current to Pin 1 from VCC. This
current is the supply current.
VCC/2
Figure 1
June 1999 TOKO, Inc. Page 3
TK15329
TEST CIRCUITS AND METHODS (CONT.)
CONTROL LOW/HIGH LEVEL (FIGURE 2)
This level is to measure the threshold level.
1) Input, the VCC to Pin 1. (This condition is the same with
other measurements, omitted from the next for simplicity)
2) Input to Pin 4 with sine wave (f = 1 kHz, VIN = 1 Vrms).
3) Connect an oscilloscope to Pin 3.
4) Pin 8 is in the open condition or low level. Elevate Pin
5 voltage gradually from 0 V until the sine wave appears
at the oscilloscope. This voltage is the threshold level,
when the wave appears.
V
CC
++
V
CC
+
Figure 3
~
Cont.
Figure 2
CONTROL INPUT IMPEDANCE (FIGURE 3)
This is the input resistance of control terminals.
1) Measure the inflow current from V
to Pin 5.
CC
2) Calculate:
IMP = VCC / Inflow Current
This resistance is the input impedance.
TOTAL HARMONIC DISTORTION (FIGURE 4)
Use the lower distortion oscillator for this measurement
because distortion of the TK15329 is very low.
1) Connect VCC to Pin 5, Pin 8 is in the open condition or low
level.
2) Connect a distortion analyzer to Pin 3.
3) Input the sine wave (1 kHz, 1 Vrms) to Pin 4.
4) Measure the distortion of Pin 3. This value is the
distortion 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 distortion
of 1-Bch.
Page 4 June 1999 TOKO, Inc.
TK15329
TEST CIRCUITS AND METHODS (CONT.)
V
V
CC
CC
++
Figure 4
VOLTAGE GAIN (FIGURE 5)
This is the output level against input level.
1) Connect VCC to Pin 5, Pin 8 is in the open condition or low
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, reverse conditions at Pin 5 and Pin 8.
8) Input the same sine wave to Pin 2.
9) Measure and calculate in the same way.
This value is the voltage gain of 1-Bch.
+
+
Figure 5
MAXIMUM INPUT LEVEL (FIGURE 6)
This measurement measures at output side.
1) Connect VCC 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.
June 1999 TOKO, Inc. Page 5
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