KKA1238NS [KODENSHI]
FM/AM STEREO RADIORECEIVER; AM / FM立体声无线电接收器
| 型号： | KKA1238NS |
| 厂家： | 
KODENSHI KOREA CORP. |
| 描述： | FM/AM STEREO RADIORECEIVER |
| 文件： | 总3页 (文件大小：164K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TECHNICAL DATA
FM/AM STEREO RADIORECEIVER
KKA1238NS
DESCRIPTION
KKA1238NS is a high performance one - chip bipolar ICS designed for FM/AM stereo radios. These include an FM/AM
front end, FM/AM IF amplifier, FM/AM detection output and FM stereo demodulator output. Bipolar silicon monolithic IC.
FEATURES
• Low current consumption
(In FM mode ID = 11.0 mA, in AM mode 8.5 mA,
VCC = 6.0V).
• Built - in LED drive circuit for tuning.
• Built - in LED drive circuit for stereo indicator.
• Built - in detune muting circuit for the FM band.
• Few external parts.
ELECTRICAL CHARACTERISTICS(TA = 25°C)
Symbol
Parameter
Test Conditions
Guaranteed Limits
Unit
Min
Typ
Max
ID1/D2
AM/FM circuit current
No signal AM/FM
8.5/11
12.0/
15.0
mA
GV1
VD1/D3
VD2
FM front end voltage gain
FM/AM detection output level
FM IF knee level
VIN1 = 40dBmV, 100MHz
VIN2 = 60dBmV, 1660kHz
28
35
35
77.5
25
42
138
31
dB
VRMS
dBmV
%
THD1/HD2 FM/AM detection output
distortion factor
0.3/0.6
2.0
GV2
GV3
SEP
VI1
AM front end voltage gain
AM IF voltage gain
Separation
19
15
30
38
24
21
40
43
28
29
dB
dB
dB
M/ST switching level by IF
input
48
30
dBmV
A1
FM Mute
Vin5=245mVrms,
MONO,1kHz ATT
16
23
dB
1
KKA1238NS
BLOCK-SCHEME
24 23 22
30
29
28
27
26
25
21
20
19
18
17
16
FM FE
AM FE
MULTIPLEX
VCO
REGULATOR
REGULATOR
PD1
PD2
1/2
COUNTER
MUTING
FM IF
DISCRI
DC
AMP
AUTO
BLEND
AM IF
DET
DECODE
BU
BU
A
MP
AMP
AMP
M/ST DC
DETUNE
MUTING
TUNING IND
DC
MP
SW
AMP
RIPPLE
FILTER
A
CONTROL
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
APPLICATION CIRCUIT
0.001
C5
C6
10.0
L4
L1
C1
7p
L2
C2
2p
C4
4p
C9
10.0
CF3
R12
220K
L3
C3
C8
3.3
RV
R2 2.2K
R3
C10
0.47
C7
22K
18p
3p
23
10K
R9*
100
30
29
28
27
26
25
24
22
21
20
19
18
17
16
GND PLL MPX VCO FM MUTE AM AFC FM REG FM AM FM GNDFM/AM
LPF REG
DISCRI
OSC
OSC
RF RF RF
FE
OUT
R4
2.2K
IN
IN
KKA1238NS
R1
C11
4.7
ST
PILOTPILOT IND
PLL DET DET VCO Rch Lch
150K
FM AM
RIPPLE AGC AGC
TUNE IF
IF BAND
LPF LPF1 LPF2 CHECKOUT OUT Ucc FILTERAFC1 AFC2 GND IND IN
IN SELECT
14 15
C20
0.01
1
2
3
4
5
6
7
8
9
10
C18
11
12
13
R5
2.2K
C16 C17
S1
BAND
R11
220K
C12
1.0
C19
0.01
33.0 1.0 4.7
R8
2.2K
Rch OUT
Lch OUT
C13*
0.022
R6*
3.3K
R10 330
CF1 IFT
CF2
C14*
0.022
R7*
3.3K
C15
100.0
Ucc=3B
2
KKA1238NS
30-Pin Plastic Dual-in-Line (NS)
Dimension, mm
A
max
min
min
max
min
max
min
max
min
max
min
max
min
max
min
max
nom
nom
min
max
min
max
5.08
0.51
3.05
4.57
0.36
0.58
0.76
1.40
0.20
0.36
26.67
28.49
9.91
11.05
7.62
9.40
1.778
10.16
2.54
3.81
0º
Aı
A2
B
B2
C
D
E
E
1
e
e2
L
α
10º
3
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