UTC KA22427
LINEAR INTEGRATED CIRCUIT
UTC
UNISONIC TECHNOLOGIES CO., LTD.
1
QW-R110-002,A
I-CHIP AM/FM RADIO IC
DESCRIPTION
UTC KA22427 is a one-chip AM/FM radio integrated circuit
that is suitable for portable radio applications. It includes AM
amplifier, local OSC, AM mixer, AM/FM amplifier, AM AGE,
FM AGE circuit and also class b Audio Power Amplifier.
FEATURES
*Low external components count.
*Wide operating voltage : 3 - 13 V.
*Internal regulated supply for constant current operation.
*DC selection of AM/FM mode.
DIP-16
BLOCK DIAGRAM
4
3
2
1
16
15
14
11
13
12
10
9
8
7
6
5
AM local
OSC
AM HF IN
HF bypass
Audio
detector
out
Audio in
Ripple
Suppression
Audio GND
Audio power
out
AM IF OUT
HF GND
AM/FM IN
IF bypass
AGC
bypass
AM/FM
OUT
IF Detector IN
+Vcc
AM HF MIXER
AM LO
AM/FM IF
AM/FM
discriminato
Audio
amplifier
Regulator
ABSOLUTE MAXIMUM RATING
(Ta=25
C)
PARAMETER
SYMBOL
VALUE
UNIT
SUPPLY VOLTAGE
VCC
11
V
SUPPLY CURRENT
ICC
44
mA
POWER DISSIPATION
PD
600
mW
THERMAL RESISTANCE
RJ-A
100
C/W
OPERATING TEMPERATURE
TOPX
-18~65
C
STORAGE TEMPERATURE
TSTG
-40~125
C
NOTE:Ta>25
C, DERATE WITH 10mW/
C UNLESS SPECIFIED.
UTC KA22427
LINEAR INTEGRATED CIRCUIT
UTC
UNISONIC TECHNOLOGIES CO., LTD.
2
QW-R110-002,A
ELECTRICAL CHARACTERISTICS
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Quiescent Circuit
Current
ICCQ
SW1
FM,VCC=3V
7
12
17
mA
SW1
FM,VCC=9V
10
17
23
Pin 16 Terminal
Voltage
V16(FM)
SW1
FM,ICC=42mA
2.0
2.4
3.1
V
Limiting Voltage
VIN(lim)
SW1
FM,VCC=5.5V,-3dB
V16=2.4V,VR=Min.
57
dB
V
Internal Regulated
Voltage
VCC
SW1
AM,ICC=42mA
12.5
13.2
14.0
V
Pin 16 Voltage
V16(AM)
SW1
AM,VCC=9V
1.4
1.9
V
Signal to Noise Ratio
VO
SW1
AM,VCC=12V,VIN=37dB
SW2
45
,V16=1.4V
1.5
3.0
V
Maximum Sensitivity
S/N
SW1
AM,VCC=5.5V,
SW2
8
,VIN=37.5dB
15
20
dB
Power Output
POUT
SW2
8
,VCC=5.5V,f=1KHZ
VR=Min. THD=10%
0.28
W
Total Harmonic
Distortion
THD
SW2
45
,ICC=42mA,f=1KHZ
VR=Min. VOUT=2V
0.5
4.0
%
Voltage Gain
GV
SW2
8
,VCC=5.5V,f=1KHZ
VR=Min.
40
dB
INPUT - OUTPUT IMPEDANCE
(Ta=25
C,VCC=6V)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Pin 2 Input ( AM )
Rip2(AM)
f=465KHZ
200
K
Impedance ( AM )
Cip2(AM)
f=465KHZ
3
pF
Pin 2 Input ( FM )
Rip2(FM)
f=10.7MHZ
30
K
Impedance
FM
Cip2(FM)
f=10.7MHZ
3.5
pF
Pin 4 Output
Rop4
f=465KHZ
300
K
Impedance
Cop4
f=465KHZ
6
pF
Pin 6 Input
Rip6
f=1MHZ
50
K
Impedance
Cip6
f=1MHZ
5
pF
Pin 14 Input ( AM )
Rip14(AM)
f=465KHZ
300
K
Impedance
AM
Cip14(AM)
f=465KHZ
3.5
pF
Pin14 Input ( FM )
Rip14(FM)
f=10.7MHZ
300
K
Impedance
FM
Cip14(FM)
f=10.7MHZ
4
pF
Pin15 Output ( AM )
Rop15(AM)
f=465KHZ
300
K
Impedance
AM
Cop15(AM)
f=465KHZ
5.5
pF
Pin15 Output ( FM )
Rop15(FM)
f=10.7MHZ
300
K
Impedance
FM
Cop15(FM)
f=10.7MHZ
6
pF
UTC KA22427
LINEAR INTEGRATED CIRCUIT
UTC
UNISONIC TECHNOLOGIES CO., LTD.
3
QW-R110-002,A
TEST CIRCUIT
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
1
2
3
4
6
1
2
3
4
6
1
2
3
4
6
1
2
3
4
6
1
2
3
4
6
1
2
3
4
6
1
2
3
4
6
~
~
FM
AM
SW1
AM HF
INPUT
V
OD
INPUT
GND
OUTPUT
Vcc
Icc
V13
V16
FM
AM
SW1
1.2k
Rg=50
Rg=600
HF
SIGNAL
AUDIO
SIGNAL
50
2pF
220pF
0.022
F
0.022
F
680pF
5k
51pF
0.047
F
50
0.01
F
0.022
F
22k
0.001
F
220
F
3.3
F
45
8
470
F
470
F
10pF
4.7k
220pF
0.047
F
470
F
SW2
FM IF
INOUT
UTC KA22427
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