TA8227AP

LINEAR INTEGRATED CIRCUIT

UNISONICTECHNOLOGIESCO.,LTD

4 of 10

www.unisonic.com.tw

QW-R107-021,D

PARAMETER

SYMBOL

VALUE

UNIT

Supply Voltage

20

V

Output Current (peak / CH)

2.5

A

Power Dissipation

4.0

W

Operating Temperature

-25~+75

°C

Storage Temperature

-55~+150

°C

ELECTRICAL CHARACTERISTICS

(Ta=25

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Quiescent Current

21

45

mA

Output Power

THD=10%

THD=10%, RL=3

Ω

2.0

2.5

3.0

W

Total Harmonic Distortion

THD

0.2

1.0

%

Gv1

Rf=120

43

45

47

dB

Voltage Gain

Gv2

56.5

dB

Input Impedance

30

k

Ω

Output Noise Voltage

eN

Rg=10k

Ω,BW=20Hz~20kHz

0.3

1.0

mVrms

Ripple Rejection Ratio

R.R.

Rg=600

Ω, fripple=100Hz

-52

dB

Cross Talk

C.T

Rg=600

-50

dB

Input Offset Voltage

V6, V7

30

60

mV

Standby Current

1stb

Sw1:OFF

1

μA

TYP. DC VOLTAGE OF EACH TERMINAL (Vcc=9V, Ta=25°C )

TERMINAL NO.

1

2

3

4

5

6

7

8

9

10

11

12

DC VOLTAGE (V)

4.5

8.7

GND

0.7

0.03

0.03

0.7

5.0

8.7

4.5

APPLICATION INFORMATION AND APPLICATION METHOD

1. Adjustment of voltage gain

The voltage gain Gv is obtained as follows by R1, R2 and Rf in Fig.1

1

2

1

log

20

R

R

R

R

R

G

f

f

V

+

+

+

=

When Rf=0

Ω

Gv=56.5 dB (Typ.)

When Rf=120

Ω

Gv=45 dB (Typ.)

By increasing Rf, reduction of Gv is possible. However, since the feedback increase is liable to produce oscillation,

it is recommended to use this at 40dB or over.

R2

30kΩ

-

+

Ch-2

R1

45Ω

47μF

INPUT

OUTPUT

Fig.1

6/7

(10/11)

5/8

(9/12)

2/11

(2/19)

( ): For SOP-20 Package