Datasheet TK15125MTL Datasheet (TOKO)

TK15125

Dual Supply Grand Earthing System Audio Signal Mute IC

FEATURES

■ Wide Voltage Range (±2.5 to ±5.5 V)

■ High Volume Attenuation (typ. -89dB)

■ Very Low Signal Distortion (typ. 0.0025%)

■ High Maximum Input Voltage (max. 5.2 V

P-P

)

■ Very Low Standby Current (typ. 0.6 mA)

■ Minimal External Component Circuitry

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.

APPLICATIONS

■ Audio Systems

■ Television

■ VTR

■ MD

■ CD

TK15125

OUT/IN 1

IN/OUT 1

GND 1 GND 2

GND 3

IN/OUT 2

OUT/IN 2

V

DD

MUTE-C NC NC

NC CONTROL

V

SS

The TK15125M is available in a SOP-14 Surface Mount Package.

ORDERING INFORMATION

TK15125M

Tape/Reel Code

TAPE/REEL CODE

TL: Tape Left

DD

MUTE-C

V

CONTROL DRIVER TIMING

OUT/IN 1

IN/OUT 1

BLOCK DIAGRAM

NC

GND 2

NC

GND 3

NC

GND 1

CONTROL

IN/OUT 2

SS

V

OUT/IN 2

Control Lo: Mute off Hi: Mute on

July 1999 TOKO, Inc. Page 1

TK15125

ABSOLUTE MAXIMUM RATINGS

Supply Voltage ......................................................... ±6 V

Power Dissipation (Note 3) ................................ 350 mW

Input Frequency ..................................................100 kHz

Storage Temperature Range ................... -55 to +150 °C

Operating Temperature Range ...................-20 to +60 °C

Signal Input Voltage ......................................... VSS to V

TK15121M ELECTRICAL CHARACTERISTICS

Test conditions: V

LOBMYSRETEMARAPSNOITIDNOCTSETNIMPYTXAMSTINU

V

DD

V

SS

I

)FFO(DD

I

)NO(DD

TTAnoitaunettAR

IC

NO

IC

FFO

VWS

FFO

= ±5 V, T

CC

egatloV

= 25 °C, f = 1 kHz, V

A

egatloVgnitarepO

ffOetuM,tnerruCgnitarepO 6.09.0Am

nOetuM,tnerruCgnitarepO 0.210.71Am

NI

tnerruCegrahCnOetuM0.80.210.81Aµ

tnerruCegrahcsiDffOetuM)2etoN(8.10.30.5Aµ

ffOetuM,WSlortnoCetuM

SIN

= 5 V

unless otherwise specified.

P-P

003= Ω )1etoN(58-98-Bd

DD

5.20.55.5V

5.2-0.5-5.5-V

V

SS

V

4.0+V

SS

VWS

NO

IWS

NO

V

TASO

egatloV

tnerruC

1DHT 2DHTNOretliFA-SIJ7000.00300.0%

noitrotsiD

nOetuM,WSlortnoCetuM

V

nOetuM,WSlortnoCetuM

egatloVCDtuptuOnOetuM 4.27.3Vm

cinomraHlatoTffOetuM

4.2+V

SS

DD

6152Aµ

5200.00700.0%

V

AVGniaGegatloVzHk02~=Bd5.0-05.0+Bd

V

)XAM(NI

RMecnatsiseRnoitaunettArennI861042213

Note 1: If an RIN other than 300 Ω is used, the volume attenuation and attack/release times change. Note 2: In the standard application a capacitor is connected between Pin 13 and VSS. Attack is the term used to describe the action of changing the

unit from ‘mute off’ to ’mute on’. Release is the term used to describe the action of changing the unit from ‘mute on’ to ‘mute off’. The standard timing control capacitance is 0.047 µF.

Note 3: Power dissipation is 350 mW when mounted as recommended. Derate at 2.8 mW/°C for operation above 25°C.

egatloVtupnImumixaM%10.0<DHT2.5V

P-P

Ω

Page 2 July 1999 TOKO, Inc.

TEST CIRCUIT AND TESTING METHODS

V

+

+5 V

22 µF

DD

VM

300 Ω

SG

A1

A2

NC

TK15125

NC

V1

V

SS

-5 V

22 µF

+

SG

TESTING METHODS

1) POWER SUPPLY CURRENT

GND

300 Ω

VM

· ‘MUTE OFF’ Mode Measure current ‘A1’ while control, Pin 9, is ‘Lo’ (or open).

· ‘MUTE ON’ Mode Measure current ‘A1’ while control, Pin 9, is ‘Hi’.

2) ATTENUATION VOLUME

· Attenuation is calculated by the following equation while control, Pin 9, is ‘Hi’: Pin 1(Pin 7) output AC voltage

ATT = 20Log

(

Pin 2(Pin 6) input AC voltage

)

3) CAPACITOR PIN CHARGING AND DISCHARGING CURRENT

· Charging Current

Measure outflow current ‘A2’ while control, Pin 9, is ‘Hi’ and the voltage at Pin 13 is VSS + 0.75 V.

· Discharging Current

Measure inflow current ‘A2’ while control, Pin 9, is ‘Lo (or open)’ and the voltage at Pin 13 is VSS + 0.75 V.

4) CONTROL SWITCH VOLTAGE

· ‘MUTE OFF’ Mode

Gradually elevate Pin 9 voltage above VSS. When the Attack action (Mute On) is implemented at Pin 1 (Pin 7), measure the voltage ‘V1’.

· ‘MUTE ON’ Mode

Gradually lower Pin 9 voltage below VDD. When the Release action (Mute Off) is implemented at Pin 1 (Pin 7), measure the voltage ‘V1’.

5) ‘MUTE ON’ OUTPUT DC VOLTAGE

· Measure output voltage at Pin 1 (Pin 7) while control, Pin 9, is ‘Hi’ and there is no input.

6) TOTAL HARMONIC DISTORTION

· Measure the distortion of the Pin 1 (Pin 7) output while control, Pin 9, is ‘Lo’ (or open).

7) SIGNAL VOLTAGE GAIN

· Signal gain is calculated by the following equation while control, Pin 9, is ‘Lo’ (or open).

Pin 1(Pin 7) output AC voltage

GV = 20Log

(

Pin 2(Pin 6) input AC voltage

)

8) INNER ATTENUATION RESISTANCE

· Using a multimeter, measure the resistance between Pin 1 (Pin 7) and Pin 2 (Pin 6) while the power supply is

off.

9) MAXIMUM INPUT SIGNAL VOLTAGE

· While control, Pin 9, is ‘Lo’ (or open), gradually elevate Pin 2 (Pin 6) voltage above 0 V

becomes 0.01% at the output of Pin 1 (Pin 7), measure the AC voltage.

. When the distortion

P-P

July 1999 TOKO, Inc. Page 3

TK15125

TYPICAL PERFORMANCE CHARACTERISTICS

TA = 25 °C, unless otherwise specified.

SUPPLY CURRENT

vs. SUPPLY VOLTAGE

Mute: off

0 2 3 4 5 6

V

CC

CONTROL THRESHOLD

VOLTAGE vs. TEMPERATURE

(mA)

CC

I

-3

-3.5

(V)

-4

CONT

V

-4.5

0.7

0.6

0.5

0.4

(±V)

SUPPLY CURRENT

vs. SUPPLY VOLTAGE

Mute: on

13

12

(mA)

CC

I

11

10

0 2 3 4 5 6

V

CC

CHARGE CURRENT (Mute Pin)

16

15

14

(µA)

13

12

CURRENT

11

vs. TEMPERATURE

(±V)

SUPPLY CURRENT

14

12

(mA)

10

CC

I

8

6

-40 -20 0 20 40 60 80

4

3

(µA)

2

CURRENT

vs. TEMPERATURE

Mute: on

TA (°C)

DISCHARGE CURRENT (Mute Pin)

vs. TEMPERATURE

-5

-40 -20 0 20 40 60 80 TA (°C)

TOTAL HARMONIC DISTORTION

vs. FREQUENCY

1

0.1

THD (%)

0.01

0.001

0.01 0.1 1 10 100

f (kHz)

10

-40 -20 0 20 40 60 80 TA (°C)

0.1

THD (%)

0.01

0.001

1

0.01 0.1 1 10 100

0

-40 -20 0 20 40 60 80 TA (°C)

TOTAL HARMONIC DISTORTION

vs. OUTPUT VOLTAGE

V

(V

P-P

)

OUT

Page 4 July 1999 TOKO, Inc.

TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)

ATT (dB)

-40

ATTENUATION VOLUME

vs. MUTE RESISTANCE

RESISTANCE (kΩ)

-120

0.01 0.1 1 10 100

-60

-80

-100

CROSS

TALK

(dB)

TA = 25 °C, unless otherwise specified.

ATTENUATION VOLUME

vs. FREQUENCY

-20

-40

-60

ATT (dB)

-80

-100

0.01 0.1 1 10 100 f (kHz)

CROSS TALK

vs. FREQUENCY

-80

-90

-100

~

5 V

P-P

300 300

I/O 1 I/O 2

-5 V

TK15125

+5 V

O/I 1 O/I 2

V

~

-110

0.01 0.1 1 10 100 f (kHz)

July 1999 TOKO, Inc. Page 5

OUT 1

IN 1

IN 2

OUT 2

STANDARD APPLICATION

300

on

off

0.047 µF

22 µF

+

Cross Talk Test Circuit

+5 V

+

22 µF

on off

-5 V

TK15125

TERMINAL VOLTAGE AND EQUIVALENT CIRCUIT

NIP

.ON

1 2 6 7

3 4 5

8V

LOBMYS

1NI/TUO 1TUO/NI 2TUO/NI

2NI/TUO

1DNG 2DNG 3DNG

SS

CD

EGATLOV

V0/gnitaolF V0/gnitaolF V0/gnitaolF V0/gnitaolF

V0 V0 V0

V5.2-~5.5-V

SS

TIUCRICTNELAVIUQENOITANALPXE

V

DD

120

1267

120

.nipDNG.nipdnuorG

.nip.niPegatloVevitageN

9lortnoCV0.5- etuMehtrofniPlortnoC

V

DD

47 K

9

47 K

V

SS

.2niProftuptuO:1niP .1niProftupnI:2niP .7niProftupnI:6niP

.6niProftuptuO:7niP

1etoN

2etoN

.ffo/no

01

11

21

CN CN CN

gnitaolF

.niPnoitcennoCoN gnitaolF gnitaolF

31C-etuMV2.3/V0.5- roticapaCgnimiTrofniP

V

41V

DD

V5.5~5.2V

.niP.niPegatloVevitisoP

DD

V

SS

.emitesaeleR/kcattArof

Note 1: Even if the input and output became opposite, the action is the same. Note 2: Connect all GND pins to the Ground. Note 3: Although all NC pins are not connected internally to the IC, signals should not be externally applied to these pins. Note 4: In the standard application a capacitor is connected between Pin 13 and VSS. Attack is the term used to describe

the action of changing the unit from ‘mute on’ to ‘mute off’. The standard timing control capacitance is 0.047 µF.

3etoN

4etoN

Page 6 July 1999 TOKO, Inc.

TK15125

TIMING-CHART AND ACTION TIME AT MUTE

Test conditions: V

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:

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 ≈

= 2.9 msec This time is the attack time.

= ±5 V, Timing Capacitor = 0.047 µF

CC

T1 ≈

Capacitance X 1.8 V

Charge Current

0.047 µF X 0.75 V 12 µA

0.047 µF X 1.8 V

=

12 µA

= 7.1 msec

Control SW_on

-3 V

-4 V

-5 V

Pin 13

1 2 3 4 5 6 7 8 (ms)

T1

T2

Capacitor pin voltage

1.8 V

0.75 V

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:

Control SW_off

-3 V

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

-4 V

-5 V

Pin 13

10 20 30 (ms)

T4

T3

1.05 V

1.8 V

Capacitor pin voltage

Output

wave

(T3 - T4 = 28 msec - 16 msec = 12 msec).

July 1999 TOKO, Inc. Page 7

TK15125

PACKAGE OUTLINE

SOP-14

14

1

0.42

Lot No.

0.12

YYY

M

AAAAA KOREA

8.65

0.1

e

1.27

MarkToko Mark

8

7

Country of Origin

3.9

0.3

+

1.45

0 ~ 0.25

1.64

1.27

0.76

e

1.27

Recommended Mount Pad

0.5

6.07

Marking Information

TK15125M 15125

5.4

1 e

0 ~10

0.2

+

0.3

Dimensions are shown in millimeters Tolerance: x.x = ± 0.2 mm (unless otherwise specified)

Toko America, Inc. Headquarters 1250 Feehanville Drive, Mount Prospect, Illinois 60056 Tel: (847) 297-0070 Fax: (847) 699-7864

TOKO AMERICA REGIONAL OFFICES

Midwest Regional Office Toko America, Inc. 1250 Feehanville Drive Mount Prospect, IL 60056 Tel: (847) 297-0070 Fax: (847) 699-7864

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Eastern Regional Office Toko America, Inc. 107 Mill Plain Road Danbury, CT 06811 Tel: (203) 748-6871 Fax: (203) 797-1223

Semiconductor Technical Support Toko Design Center 4755 Forge Road Colorado Springs, CO 80907 Tel: (719) 528-2200 Fax: (719) 528-2375

Visit our Internet site at http://www.tokoam.com

The information furnished by TOKO, Inc. is believed to be accurate and reliable. However, TOKO reserves the right to make changes or improvements in the design, specification or manufacture of its products without further notice. TOKO does not assume any liability arising from the application or use of any product or circuit described herein, nor for any infringements of patents or other rights of third parties which may result from the use of its products. No license is granted by implication or otherwise under any patent or patent rights of TOKO, Inc.

Page 8 July 1999 TOKO, Inc.

IC-119-TK119xx

0798O0.0K