Datasheet TK15121MTL Datasheet (TOKO)

TK15121

Grand Earthing System Audio Signal Mute IC

FEATURES

■ Wide Voltage Range (1.8 ~ 5.5 V)

■ Very Low Signal Distortion (typ. 0.005%)

■ High Maximum Input Voltage (max. 4.2 V

P-P

)

■ Very Low Standby Current (typ. 0.1 mA)

■ Minimal External Component Circuitry

DESCRIPTION

The TK15121M is a “MUTE IC” of the Grand Earthing System that was developed as a low frequency signal attenuation for audio products.

The mute function includes two channels which act simultaneously by one control key.

The optional time for the Attack/Release can be set up by the “Timing Control Capacitor”.

APPLICATIONS

■ Audio Systems

■ Television

■ VTR

■ MD

■ CD

20P

TK15121

IN/OUT 1

CONTROL

IN/OUT 2

V

CC

GND

MUTE CAPACITOR

BLOCK DIAGRAM

DRIVER

AMP

CONTROL

LOGIC

ORDERING INFORMATION

TK15121M

Tape/Reel Code

TAPE/REEL CODE

TL: Tape Left

April 1999 TOKO, Inc. Page 1

TIME

CONTROL

TK15121

ABSOLUTE MAXIMUM RATINGS

Supply Voltage (VCC MAX) ....................................... 10 V

Power Dissipation (Note 3) ................................ 200 mW

Maximum Input Frequency (f

).........................100 kHz

MAX

TK15121M ELECTRICAL CHARACTERISTICS

Test conditions: V

LOBMYSRETEMARAPSNOITIDNOCTSETNIMPYTXAMSTINU

= 3 V, T

CC

= 25 °C, f = 1 kHz, V

A

IN

= 4 V

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

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

unless otherwise specified.

P-P

V

CC

I

FFOCC

I

NOCC

tnerruC

TTAnoitaunettAR

IC

NO

IC

FFO

VWS

FFO

VWS

NO

V

TASO

DHT

egatloV

noitrotsiD

egatloVgnitarepO8.10.35.5V

ffOetuMtnerruCylppuS

nOetuMtnerruCylppuS

Ω

NI

1etoN,k3=4575Bd-

1.02.0Am

0.50.8Am

tnerruCegrahCnOetuM2etoN.noitcakcattA0161Aµ

tnerruCegrahcsiDffOetuM2etoN.noitcaesaeleR0.60.9Aµ

ffOetuMWSlortnoCetuM

nOetuMWSlortnoCetuM

noitarutaStuptuOnOetuM

cinomraHlatoTffOetuM

zHk02~=f500.0700.0%

3.0-5.0V

0.1V

CC

4.1Vm

AVGniaGzHk02~=f5.0-0 5.0+Bd

V

XAMNI

egatloVtupnImumixaM%10.0=DHT2.4V

3.0+V

P-P

Note 1: If a RIN other that 3 kΩ is used, then the volume attenuation and attack/release time changes. Note 2: Attack is an action that changes to “mute on” from “mute off”, and release is action that changes to “mute off” from “mute on”. Standard capacity for the timing control is 0.22 µF. Note 3: Power dissipation is 200 mW when mounted as recommended. Derate at 1.6 mW/°C for operation above 25°C.

Page 2 April 1999 TOKO, Inc.

TEST CIRCUIT AND METHODS

TK15121

SG

3 KΩ

THD

V

_

~

V1

V

_

~

A1

A2

V2

METHODS

1) Power supply current.

· Power supply current in the ‘MUTE OFF’. When the control is ‘Lo (or open)’, measures the current ‘A1’.

· Power supply current in the ‘MUTE ON’. When the control is’HI’, measures the current ‘A1’.

2) Attenuation volume.

· When the control is ‘Hi’, attenuation is calculated by the following formula.

ATT = 20Log

Pin 1(Pin 3) AC voltage at V1 = 3 V

(

Pin 1(Pin 3) AC voltage at V1 = 0 V

)

3) Current of the charge and discharge to the Condenser Pin.

· Current of the charge. When the control is ‘Hi’ and the measurement is outflow current ‘A2’ when the Pin 4 voltage is 0.3 V.

· Current of the discharge. When the control is ‘Lo (or open)’ and the measurement is inflow current ‘A2’ when the Pin 4 voltage is 0.3 V.

4) Voltage of the control switch.

· Voltage for the control ‘Hi’. The first elevates Pin 2 voltage gradually from 0 V and if its action becomes ‘MUTE ON’ at the Pin 1 (Pin 3) output, t hen measures the voltage ‘V1’.

· Voltage for the control ‘Lo’. The first lowers Pin 2 voltage gradually from VCC, and if its action becomes ‘MUTE OFF’ at the Pin 1 (Pin 3) output, then measures the voltage ‘V1’.

5) Output DC voltage at the ‘MUTE ON’. When the control is ‘Hi’, measures the Pin 1 (Pin 3) output voltage at non-input.

6) Total harmonic distortion. When the control is ‘Lo (or open)’, measures the distortion of the Pin 1 (Pin 3) output.

7) Signal Voltage Gain When the control is ‘Lo (or open)’, signal gain is calculated by the following formula.

Pin 1(Pin 3) AC voltage

GV = 20Log

(

Pin 1(Pin 3) AC voltage front 3K

)

8) Maximum input signal voltage. When the control is ‘Lo (or open)’, the first elevates input AC voltage of Pin 1 (Pin 3) gradually from 0 V

P-P

, and

if the distortion became 0.01 % at the Pin 1 (Pin 3) output, the measure the AC voltage.

April 1999 TOKO, Inc. Page 3

TK15121

CURRENT

(

A)

CURRENT

(

A)

THD

(%) THD

(%)

ATT

(dB) ATT

(dB)

CROSS

TALK

(dB)

I

(

A)

TYPICAL PERFORMANCE CHARACTERISTICS

TA = 25 °C, unless otherwise specified.

SUPPLY VOLTAGE

CURRENT

Mute: off

0

0 2 3 4 5 6

V

(V)

CC

OUTPUT VOLTAGE

TOTAL HARMONIC DISTORTION

1

m

0.14

0.12

0.10

0.1

VS.

SUPPLY VOLTAGE

8

Mute: on

6

m

4

2

0

0 2 3 4 5 6

0

-20

-40

CURRENT

V

(V)

CC

FREQUENCY

ATTENUATION VOLUME

VS.

TOTAL HARMONIC DISTORTION

1

0.1

0.01

0.001

0.01 0.1 1 10 100

0

-20

-40

FREQUENCY

f (kHz)

MUTE RESISTANCE

ATTENUATION VOLUME

VS.

0.01

0.001

0.01 0.1 1 10 100 V

(V

P-P

)

VS.

OUT

FREQUENCY

CROSS TALK

-60

-70

-80

-90

-100

-110

-60

-80

0.01 0.1 1 10 100 f (kHz)

3 V

~

4 V

P-P

3 K

I/O_1 I/O_2

V

~

-60

-80

0.01 0.1 1 10 100 RESISTANCE (kΩ)

VS.

m

CC

8

6

4

2

TEMPERATURE

SUPPLY CURRENT

Mute: on

Cross Talk Test Circuit

-120

0.01 0.1 1 10 100 f (kHz)

0

-40 -20 0 20 40 60 80 TA (°C)

Page 4 April 1999 TOKO, Inc.

TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)

V

(V)

CURRENT

(

A)

ATT

(dB)

TA = 25 °C, unless otherwise specified.

TK15121

TEMPERATURE

VS.

CONTROL

THRESHOLD VOLTAGE

0.8

0.7

CONT

0.6

0.5

-40 -20 0 20 40 60 80 TA (°C)

TEMPERATURE

VS.

CHARGE/DISCHARGE CURRENT

16

12

µ

charge

8

discharge

4

0

-40 -20 0 20 40 60 80 TA (°C)

ST ANDARD APPLICATION

TEMPERATURE

VS.

ATTENUATION VOLUME

-20

-40

-60

-80

-40 -20 0 20 40 60 80 TA (°C)

out1

3 V

3 K

in1

+

22 µ

3 K

in2

out2

on

off

+

0.22 µ

April 1999 TOKO, Inc. Page 5

TK15121

TERMINAL VOLTAGE AND EQUAL VALUE CIRCUIT

NIP

.ON

1

3

tuo/ni1

tuo/ni2

LOBMYS

CD

EGATLOV

V0/gnitaolF

TIUCRICEULAVLAUQENOITANALPXE

V

CC

V0/gnitaolF

13

2lortnoCV0 etuMehtrofniPlortnoC

V

CC

5 K

2

30 K

4C·etuMV6.0/V0 roticapacgnimitrofniP

V

CC

.hc1roftuptuo/ni:nip1

.hc2roftuptuo/ni:nip3

.ffo/no

esaeler/kcattarof

.noitca

100 K

4

1etoN

5DNGV0.nipdnuorG

5

6V

CC

V5.5~8.1 .nipegatloVylppuS

6V

CC

Note 1: Attack is an action that changes to ‘mute on’ from ‘mute off’, and release is an action that changes to ‘mute off’

from ‘mute on’. Standard capacity for the timing control is 0.22 µF.

Page 6 April 1999 TOKO, Inc.

TK15121

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 mute action was attacked, the charge current starts inflow, then the voltage at the pin for the capacitor rises up to 0.6 V. The rise time to 0.6 V is the following formula.

= 3 V, Timing Capacitor = 0.22 µF

CC

T1 ≈

Capacity X 0.6 V

Charge Current

=

0.22 µF X 0.6 V 10 µA

= 13.2 msec

The voltage of Pin 4 functions to 0.6 V by the upper limit circuit. In the estimate, when the pin of capacitor is 0.15 V and between 0.16 V, the attenuation value is about 90% in the final attenuation value. So it is the following calculation and timing chart.

T2 ≈

0.22 µF X 0.16 V 10 µA

_

= 0.22 msec

0.22 µF X 0.15 V 10 µA

Control SW_on

0.6

0.2

0.16

0.15

0.1

4 pin

This time is the attack time.

0

Capacitor pin volt. (V)

2 4 6 10 12 14 (ms)

Input

T1 T2

Output

[Release action start (mute off)] When the mute action was released, the discharge current starts outflow, then the voltage at the pin for the capacitor drops up to 10 mV. The drop time to 10 mV is the following formula.

T3 ≈

Capacity X 0.6 V

Disharge Current

0.22 µF X 0.6 V

=

6 µA

= 22 msec

In the estimate, when the pin of the capacitor is 0.16 V and between 0.15 V, the attenuation value is restored about 90% against the input value. So it is the following calculation and timing chart.

T4 ≈

0.22 µF X 0.16 V 6 µA

0.22 µF X 0.15 V

_

= 0.37 msec This time is the release time.

6 µA

Control SW_off

0.6 4 pin

0.2

0.16

0.15

0.1

0

Capacitor pin volt. (V)

10 15 20 (ms)

T3 T4

Output

April 1999 TOKO, Inc. Page 7

TK15121

PACKAGE OUTLINE

SOT23L-6

123

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

e e

0.95 0.95

3.5

(3.4)

Marking Information

TK15121M 121

456

Marking

+0.15

- 0.05

0.32

+0.3

- 0.1

0.1

M

0.3

1.2

1.4 max

+0.15

- 0.05

0 - 0.1

0.15

0.6

1.0

Recommended Mount Pad

3.3

ee

0.95 0.95

2.2

+ 0.3

3.0 e1

15 max

0.4

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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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 April 1999 TOKO, Inc.

IC-119-TK119xx

0798O0.0K