TA8227 データシートの表示（PDF） - Unisonic Technologies

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TA8227

LOW FREQUENCY POWER AMPLIFIER

Unisonic Technologies 

TA8227AP

LINEAR INTEGRATED CIRCUIT

„ ABSOLUTE MAXIMUN RATINGS (Ta=25°C)

PARAMETER

Supply Voltage

Output Current (peak / CH)

Power Dissipation

Operating Temperature

Storage Temperature

SYMBOL

VCC

IO(PEAK)

PD

TOPR

TSTG

„ ELECTRICAL CHARACTERISTICS

(Ta=25°C, Vcc=9V, RL=4Ω, Rg=600Ω, f=1kHz, unless otherwise specified)

PARAMETER

SYMBOL

TEST CONDITIONS

Quiescent Current

ICCQ

VIN=0

Output Power

POUT(1)

POUT(2)

THD=10%

THD=10%, RL=3Ω

Total Harmonic Distortion

THD

POUT=0.4W/CH

Voltage Gain

Gv1

Rf=120Ω,VOUT=0.775Vrms (0 dBm)

Gv2

Rf=0, VOUT=0.775Vrms (0 dBm)

Input Impedance

RIN

Output Noise Voltage

eN

Rg=10kΩ,BW=20Hz~20kHz

Ripple Rejection Ratio

R.R. Rg=600Ω, fripple=100Hz

Cross Talk

C.T

Rg=600Ω,VOUT=0.775Vrms (0 dBm)

Input Offset Voltage

V6, V7

Standby Current

1stb Sw1:OFF

VALUE

20

2.5

4.0

-25~+75

-55~+150

UNIT

V

A

W

°C

°C

MIN TYP MAX UNIT

21 45 mA

2.0

2.5

3.0

W

0.2 1.0 %

43 45 47 dB

56.5

dB

30

kΩ

0.3 1.0 mVrms

-52

dB

-50

dB

30 60 mV

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) VCC 4.5 8.7 GND 0.7 0.03 0.03 0.7 5.0 8.7 4.5 VCC

„ 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

GV

= 20 log R f + R1 + R2

R f + R1

When Rf=0Ω

Gv=56.5 dB (Typ.)

When Rf=120Ω

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.

CNF

47μF

INPUT

6/7

(10/11)

Rf

5/8

(9/12) R1

45Ω

+

Ch-2

-

R2

30kΩ

OUTPUT

2/11

(2/19)

( ): For SOP-20 Package

Fig.1

UNISONIC TECHNOLOGIES CO., LTD

www.unisonic.com.tw

4 of 10

QW-R107-021,D

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