1
MIKA1191
FM / AM RADIO
MI
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CONTENTS
Page
GENERAL DESCRIPTION
1
FEATURES
1
ABSOLUTE MAXIMUM RATINGS
1
RECOMMENDED OPERATING
CONDITIONS
1
PIN DESCRIPTION
AND
CONFIGURATION
2
BLOCK DIAGRAM
2
STANDARD CIRCUIT DESIGN DATA (1)
3
STANDARD CIRCUIT DESIGN DATA (3)
5
STANDARD CIRCUIT DESIGN DATA (2)
4
ELECTRICAL CHARACTERISTICS TEST
CIRCUIT
6
ELECTRICAL CHARACTERISTICS
6
CONTENTS
Page
APPLICATION CIRCUIT
7
COIL DATA
7
MIKA1191BM EVALUATION BOARD
7
EXAMPLE OF REPRESENTATIVE
CHARACTERISTICS
8
AM
FE + IF + AF INPUT-OUTPUT
CHARACTERISTICS
8
FM FE + IF + AF INPUT-OUTPUT
CHARACTERISTICS
8
PHYSICAL DIMENSIONS
AND
MARKING
DIAGRAM
9
SOP-28
9
ORDERING INFORMATION
10
GENERAL DESCRIPTION
The MIKA1191 is a bipolar silicon monolithic FM /AM
radio IC designed for radio-cassette tape recorders
and headphone tape recorders, and has the
following functions:
FM SECTION
!
RF amplifier, Mixer and OSC (incorporating AFC
variable capacitor);
!
IF amplifier;
!
Quadrature detection;
!
Tuning LED driver.
AM SECTION
!
RF amplifier, Mixer and OSC (with RF AGC);
!
IF amplifier (with IF AGC);
!
Detector;
!
Tuning LED driver.
AF SECTION
!
Electronic volume control;
!
FM muting.
FEATURES
Small number of peripheral components.
Low current consumption (Vcc = 3V).
!
For FM: I
D
= 5.8 mA (Typ.)
!
For AM: I
D
= 4.7 mA (Typ.)
Built-in FM/AM select switch.
Large output of AF amplifier.
EIAJ output = 450 mW (Typ.) when Vcc = 6V and
load impedance 8.
REPLACEMENT
of
CXA1191
ABSOLUTE MAXIMUM RATINGS
(T
A
= 25C)
MIKA1191
FM/AM RADIO
RECOMMENDED OPERATING
CONDITIONS
DATA SHEET
10 J
UNE
2003
N
O
. 00006
R
EV
. 1-03
SYMBOL CHARACTERISTIC VALUE UNIT
Vcc
Supply voltage 2 to 8.5 V
SYMBOL
CHARACTERISTIC
VALUE
UNIT
Vcc
Supply voltage
14 V
T
opr
Operating temperature
--10 to +60 C
T
stg
Storage temperature
--50 to +125 C
P
D
Allowable power dissipation
700 mW
3
MIKA1191
FM / AM RADIO
MI
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m
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10 J
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PIN
No.
SYMBOL
VOLTAGE (V)
EQUIVALENT CIRCUIT
DESCRIPTION
Vcc = 3V
Vcc = 6V
FM
AM
FM
AM
1
MUTE
0
0
0
0
2
FM
DISCRI
2.18 2.70 4.88 5.43
Phase-shift circuit.
Connect ceramic
discriminator
3
NF
1.50 1.50 3.00 3.00
Negative feedback pin
27
AF OUT
1.50 1.50 3.00 3.00
Power amplifier output
pin
4
VOL
CONT
1.25 1.25 1.25 1.25
Connect variable
resistor for electronic
volume control
5
AM OSC
1.25 1.25 1.25 1.25
AM local oscillation
circuit
6
AFC
1.25
*
1.25
*
AFC variable capacitor
pin
8
REG
OUT
1.25 1.25 1.25 1.25
Regulator pin 1.25V
(Typ.)
7
FM OSC
1.25 1.25 1.25 1.25
FM local oscillation
circuit
STANDARD CIRCUIT DESIGN DATA
"
"
"
"
27
3
x100
x100
Vcc
GND
$
$
$$$
$
"
4
20k
80k
GND
"
"
3.6k
"
5
"
"
6
8
1.25V
(REG)
$
"
"
"
7
$
*
The pin voltage of pin 6 during AM, it is the same pin voltage of pin 22 during J BAND and is the same pin voltage of pin 21
during W BAND.
"
2
1.0k
1.2k
$
$
FM / AM RADIO
MIKA1191
Design by Vladimir F.Lityaghin / E-mail: lityaghin@mail.ru / Tel: +7(095)532-64-54
MI
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4
PIN
No.
SYMBOL
VOLTAGE (V)
EQUIVALENT CIRCUIT
DESCRIPTION
Vcc = 3V
Vcc = 6V
FM
AM
FM
AM
9
FM RF
1.25 1.25
1.25 1.25
Connect FM RF tuning
coil.
12
FM RF IN
0.30
0
0.30
0
FM RF input pin.
10
AM RF IN
1.25 1.25
1.25 1.25
AM RF input pin.
11
NC
0
0
0
0
No connection.
13
GND
(FE GND)
0
0
0
0
14
FM/AM
FE OUT
0.36
0.2
0.36
0.2
IF output pin of FM and
AM. Connect IF filter.
15
BAND
SELECT
0.84
0
0.88
0
FM and AM bands
selection switch pin.
During GND it becomes
AM and during open it
becomes FM.
16
AM IF IN
0
0
0
0
Input pin of AM IF
17
FM IF IN
1.3
0
1.3
0
Input pin of FM IF
STANDARD CIRCUIT DESIGN DATA
(CONTINUED)
3p
1.0k
8.0k
"
"
9
12
$
$
Vcc
"
10
$$
220
"
14
AM
FM
$
$
GND
Vcc
"
15
$
$
$
$
$
$
2.0k
"
16
$
$
360
GND
"
17
$
$
$
$
$
$
$
$
5
MIKA1191
FM / AM RADIO
MI
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JS
C
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ttp
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www.
m
i
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r
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10 J
u
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200
3
PIN
No.
SYMBOL
VOLTAGE (V)
EQUIVALENT CIRCUIT
DESCRIPTION
Vcc = 3V
Vcc = 6V
FM
AM
FM
AM
18 NC
0
0
0
0
No connection.
19 METER
1.6
1.6
4.5
4.5
METER drive circuit (for
tuning indicator).
20 GND
0
0
0
0
21 AFC/AGC 1.25 1.49 1.25 1.49
AFC pin of W BAND.
During AM it determines
time constant of AGC.
22 AFC/AGC 1.25 1.25 1.25 1.25
AFC pin of J BAND.
During AM it determines
time constant of AGC.
23 DET OUT 1.25
1.0 1.25
1.0
Detection output pin.
24 AF IN
0
0
0
0
Power amplifier input
pin.
25 RIPPLE
FILTER
2.71 2.71
5.4
5.4
Ripple filter.
26 Vcc
3.0
3.0
6.0
6.0
Power supply pin.
28 GND
0
0
0
0
Power Ground
STANDARD CIRCUIT DESIGN DATA
(CONTINUED)
"
19
1.25V
N
x3
GND
$
$
$
$
$
$
$
$
"
"
"
23
22
21
33k 39k
GND
$$
$
$
$
$
$
$
$
$
$
$
$
$
$
$
$
$
$
$
"
24
11.0k
82.0k
x4
x4
GND
"
25
17.0k
73.0k
90.0k
Vcc
$
$
$
$ $
$
$
$
$
$
$
$
$
$
$
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