UTCTA7368P

LINEAR INTEGRATED CIRCUIT

2

QW-R107-009,A

°C)

PARAMETER

SYMBOL

VALUE

UNIT

Supply Voltage

14

V

Power Dissipation

900

mW

Operating Temperature

-20 ~ 75

°C

Storage Temperature

-55 ~ 150

°C

Note: Derated Ta>25

°C, in the proportion of 7.2mW/°C

°C, Vcc=6V, f=1kHz, Rg=600Ω,RL=4Ω, unless otherwise

specified)

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Quiescent Circuit

5.5

Current

ICCQ

6.6

mA

7.5

Voltage Gain

GV

Vin=0.5mVrms

37

40

43

dB

Ω,THD=10%

120

Ω,THD=10%

500

720

Output Power

Pout

Ω,THD=10%

300

450

mW

Ω,THD=10%

800

1100

Ω,THD=10%

450

610

Total Harmonic

Distortion

THD

Pout=100mW

0.3

1

%

Output Noise Voltage

Vno

Rg=10k

Ω,BPF=20Hz~20kHz

0.2

0.5

mVrms

Ripple Rejection

RR

fr=100Hz,Vr=0.3Vrms,Crip=0

25

dB

Input Resistance

Rin

27

k

Ω

TERMINAL DC VOLTAGE

Pin No.

1

2

3

4

5

6

7

8

9

Value(V)

0

2.4

0.62

0.64

0

0

2.61

NC

6

PRECAUTION FOR APPLICATION

1. Input stage (Figure 1)

The input stage of power amplifier is comprised of a PNP differential pair( Q2 and Q3) preceded by a PNP emitter

follower(Q1) which allows DC referencing of the source signal to GND. This eliminates the need for an input coupling

capacitor. However, in case the brush noise of volume becomes a problem, provide serially a coupling capacitor to

the input side.

2. Adjustment of the voltage gain (figure 2)

The voltage gain is fixed at Gv=40dB by the resistors( R4 and R5) in IC. Its reduction is possible through adding Rf as

shown in Figure 2. In this case, the voltage gain is obtained by the following equation: Gv=20log(R5+R4+Rf)/(R4+Rf).

It is recommended to use this IC with the voltage gain of Gv=28dB or over.