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KIA8207K 데이터시트 PDF




KEC에서 제조한 전자 부품 KIA8207K은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


 

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부품번호 KIA8207K 기능
기능 LOW FREQUENCY POWER AMPLIFIER
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KIA8207K 데이터시트, 핀배열, 회로
KEC
M
SEMICONDUCTOR
TECHNICAL DATA
KIA8207K
BIPOLAR LINEAR INTEGRATED CIRCUIT
LOW FREQUENCY POWER AMPLIFIER
KIA8207K is an audio power IC with built-in two
channels developed for portable radio cassette tape
recorder with power ON/OFF switch.
Because of he parts reduction and SIP (Single Inline
Package), space merit is remarkable.
Thermal shut down protection circuit is built in.
FEATURES
* High Power
: POUT=2.5W/CH (Typ.)
(Vcc=9V,
f=lkHz, THD=10%)
: POUT=4.6W/CH (Typ.)
(Vcc=12V, RL=4£, f=lkHz, THD=10%)
* Low Popping Noise at Power ON.
* Small Quiescent Current
: IccQ=21mA(Typ.) (Vcc=9V, ViN=0)
* Soft Clip
* Built-in Thermal Shut Down Protection Circuit.
* Best for Supply Voltage 9V, 12V
* Operation Supply Voltage Range
: Vcc=6~15V
MAXIMUM RATINGS (Ta=25°C)
CHARACTERISTIC
SYMBOL
RATING
UNIT
Supply Voltage
Vcc 20 V
Output Current (peak/ch)
Io(Peak) 2.5 A
Power Dissipation
PD 12.5 W
Operating Temperature
T0pr
-20-75
°C
Storage Temperature
Tstg
-55-150
°C
1997. 5. 10
Revision No : 0
KEC
1/8




KIA8207K pdf, 반도체, 판매, 대치품
KIA8207K
APPLICATION INFORMATION AND APPLICATION METHOD
1. ADJUSTMENT OF VOLTAGE GAIN
The voltage gain Gv is obtained as
follows by Ri, R2 and Rf in Fig 1.
Gv
=
20
log
Rf + Ri + R2
Rf + Ri
When Rf=0,
Gv=56.5dB (Typ.)
When Rf=82Q,, Gv=45dB (Typ.)
INPUT
45 n
R2
-WV
30kfi
OUTPUT
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.
\
2. THERMAL SHUT-DOWN CIRCUIT
The thermal shut-down circuit is built in for the purpose of preventing the destruction of IC due to the abnormal
temperature rise when the heat radiation is insufficient. The operation temperature is set at radiation Fin
temperature 175°C (Typ.). At this temperature or over the bias is interrupted to prevent the destruction of IC.
3. INPUT STAGE
The input circuit of this IC is as shown in Fig. 2.
PNP T r Q l is provided in the input circuit so as to
make its usage possible without the input coupling
capacitor.
However, at pins © and max 60mV offset voltage
is produced. Application after checking volume slide
noise is recommended. For cutting the volume slide
noise, insert the input capacitor : CIN in series to
interrupt the DC component.
4. OSCILLATION PREVENTIVE MEASURES
For oscillation preventive capacitor C6 and C7 between
the output terminal and GND, it is recommended
to use polyester film capacitor having good characteristics
for temperature and for high frequency.
Since the characteristics of the capacitor is liable to be
influenced by the temperature, use this capacitor
Fig 2
after the temperature test to check the oscillation allowance.
In addition, as the position of the electrolytic capacitor has a remarkable influence on the oscillation,
connect C10 to Vcc at the nearest possible position from power GND.
At using this application with the voltage gain reduced, oscillation is liable to be produced.
Apply the capacitor after checking enough for its capacity, type and mounting position.
* As the oscillation allowance varies according to the printed pattern layout, the standard printed board
of KEC is recommended to be referred to design it.
5. POWER ON/OFF SWITCH
There is power ON/OFF switch at pin (3). However, output power is changed by (3) pin supply voltage
when pin (3) supply voltage is not same pin © supply voltage, after referring to attached date, select
pin (3) supply voltage.
1997. 5. 10
Revision No : 0
KEC
4/8

4페이지










KIA8207K 전자부품, 판매, 대치품
KIA8207K
PQ
o
P5 - 1 0
oHHH - 2 0
-30
R.R - Rg
Vnn — QV
u , —a n
fi1lu—nuOnTiTzo-7n n
Ti a ofcJoUri
OHHUH•H«H-9
-40
-50
-60
a -70
PcHuLH,
-80
30
100 300 l k
3k 10k 30k 100k
SIGNAL SOURCE RESISTANCE Rg (fi)
C.T - Ri
PQ - 1 0
S -20
EH
d -30
-40
«Eh
CCOO
O
-50
-60
-70
Vnn — QV
—a n
f1
p^
1-1K1irXH1pVZnn
T1(-1' ocori
-80
30 100 300 l k 3k 10k 30k 100k
SIGNAL SOURCE RESISTANCE Rg (n)
C.T - f
PQ - 1 0
w•D - 2 0
EH
D -30
-40
H -50
C/3
Xfl
O
-60
PCHJ - 7 0
vcc ==9V
RL=4n
Rn, = 6 2 0 0
Ta=25°C
-80
30 100 300 l k 3k 10k 30k 100k
FREQUENCY f (Hz)
a VNO - Rg
B 1.6
Vcc ==9V
>ofc
1.4
1.2
4Q
Rg
BW
ZUlttlZ
WO 1.0
Ta=
§
O>
0.8
0.6
W
XHO£Hfl
0.4
0.2
HP 0
PHPOL.
30 100 300 l k 3k 10k 30k 100k
SIGNAL SOURCE RESISTANCE Rg (fi)
1'W 12
CM
HouuHr 10
EfHHc
8
6
£O 4
EfHOCHH&OHOHcr
2
0
ICCQ2,V2,V10 -
Vcc=12V
VIN=0
Ta=25°C
ICCQ2.
// V2,V10^
2 468
VCC2
12
10
8 >CM
H
6§
4A O>
H
2* PE-IH
10 12 14
SUPPLY VOLTAGE VCC2 (V)
QaEH
FC
OHETHHF
oEH
THD
30
Vcci =9V
" RL=4Q
10 _ f=lkHz
= Rnf=120G
5 - Ta=25°C
3
HH
o 0.5
a 0.3
- P(OUT
III
>>0II)J1/D5IImcqIII Oi
-j
J
I 0.1
0.01 0.03 0.1 0.3 1
3
oEH OUTPUT POWER P 0 U T (W)
10
1997. 5. 10
Revision No : 0
KEC
7/8

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부품번호상세설명 및 기능제조사
KIA8207K

LOW FREQUENCY POWER AMPLIFIER

KEC
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