Sony CXA1691BM Fm/am radio Datasheet

CXA1691BM/BS
FM/AM Radio
For the availability of this product, please contact the sales office.
Description
CXA1691BM/BS is a one-chip FM/AM radio IC
designed for radio-cassette tape recorders.
Features
• Small number of peripheral components.
• Low current consumption (VCC=3 V)
For FM : ID=5.8 mA (Typ.)
For AM : ID=4.7 mA (Typ.)
• Built-in FM/AM select switch.
• Large output of AF amplifier.
VCC=6 V, EIAJ output=500 mW (Typ.)
when load impedance 8 Ω
Function
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
CXA1691BM
28 pin SOP (Plastic)
CXA1691BS
30 pin SDIP (Plastic)
Absolute Maximum Ratings (Ta=25 °C)
• Supply voltage
VCC
14
V
• Operating temperature Topr
–10 to +60
°C
• Storage temperature
Tstg –50 to +125 °C
• Allowable power dissipation
700
mW
PD
(CXA1691BM)
PD
1000
mW
(CXA1691BS)
Recommended Operating Conditions
Supply voltage
VCC
2 to 7.5
V
(CXA1691BM)
VCC
2 to 8.5
V
(CXA1691BS)
Structure
Bipolar monolithic IC
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
—1—
E99215-TE
CXA1691BM/BS
Block Diagram
CXA1691BM
AF
GND OUT
28
27
Ripple AF
VCC FILTER IN
26
25
24
DET AFC AFC
OUT AGC AGC
23
22
21
AM IF DET AGC
AF POWER AMP
FM/AM
FM
AM BAND
IF IN IF IN SELECT
17
16
15
IF
GND METER NC
20
19
18
TUNING METER
AM FE
FM IF
FM
DISCRIMINATOR
FM FE
1
2
MUTE
3
FM
NF
DISCRI
4
5
6
VOL
AM
OSC
AFC
7
8
9
FM Reg
OSC OUT
FM
RF
10
AM
RF IN
11
NC
12
13
14
FM
FE FM/AM
RF IN GND FE OUT
CXA1691BS
AF
GND GND OUT
30
29
28
VCC
Ripple AF
FILTER IN
27
26
25
DET AFC AFC
OUT AGC AGC
24
23
22
IF
GND METER NC
21
20
19
FM/AM
FM
AM BAND
IF IN IF IN SELECT
18
17
16
AM IF DET AGC
TUNING METER
AF POWER AMP
AM FE
FM IF
FM
DISCRIMINATOR
FM FE
1
2
MUTE
NC
3
4
FM
NF
DISCRI
5
6
7
VOL
AM
OSC
AFC
8
9
FM Reg
OSC OUT
—2—
10
FM
RF
11
AM
RF IN
12
NC
15
13
14
FM
FE FM/AM
RF IN GND FE OUT
CXA1691BM/BS
Standard Circuit Design Data
No.
1
(1, 2)
Symbol
MUTE
(The pin numbers in the parenthesis are for CXA1691BS.)
Voltage (V)
VCC=3 V VCC=6 V
FM AM FM AM
0
0
0
Equivalent circuit
Description
0
2
2 (3)
FM DISCRI
1k
2.18 2.70 4.88 5.43
Phase-shift circuit Connect
ceramic discriminator
1.2k
3 (4)
NF
VCC
1.5 1.5 3.0 3.0
×100
Negative feedback pin
27
×100
27 (28) AF OUT
1.5 1.5 3.0 3.0
GND
3
Power amplifier output pin
4
20k
4 (5)
VOL CONT
Connect variable resistor for
electronic volume control.
1.25 1.25 1.25 1.25
80k
GND
5
5 (6)
AM OSC
1.25 1.25 1.25 1.25
6 (7)
AFC
1.25
8 (9)
REG OUT
∗
1.25
3.6k
∗
1.25 1.25 1.25 1.25
AM local oscillation circuit
AFC variable capacitor pin
8
1.25V
(REG)
6
Regulator pin 1.25 V (Typ.)
7
7 (8)
FM OSC
1.25 1.25 1.25 1.25
FM local oscillation circuit
—3—
CXA1691BM/BS
No.
Symbol
Voltage (V)
VCC=3 V VCC=6 V
FM AM FM AM
Equivalent circuit
1.25 1.25 1.25 1.25
9
Description
3p
9 (10)
FM RF
Connect FM RF tuning coil
8k
12 (13) FM RF IN
0.3
0
0.3
10 (11) AM RF IN
1.25 1.25 1.25 1.25
12
0
FM RF input pin
1k
10
11 (12) NC
13 (14)
GND
(FE GND)
0
0
0
0
0
0
0
0
AM RF input pin
VCC
AM
FM/AM
14 (15)
FE OUT
FM
IF output pin of FM and AM.
Connect IF filter.
0.36 0.2 0.36 0.2
220
14
VCC
15 (16)
BAND
SELECT
0.84
0
0.88
FM and AM bands selection
switch pin. During GND it
becomes AM and during
open it becomes FM.
0
15
GND
16 (17) AM IF IN
0
0
0
0
17 (18) FM IF IN
1.30
0
1.30
0
16
Input pin of AM IF.
2k
17
360
Input pin of FM IF.
GND
18 (19) NC
0
0
0
0
—4—
CXA1691BM/BS
No.
Symbol
Voltage (V)
VCC=3 V VCC=6 V
FM AM FM AM
Equivalent circuit
Description
19
×3
1.25V
19 (20) METER
Meter drive circuit
(For tuning indicator)
1.6 1.6 4.5 4.5
N
GND
20 (21) GND
0
0
0
0
21 (22) AFC/AGC
1.25 1.49 1.25 1.49
22 (23) AFC/AGC
1.25 1.25 1.25 1.25
22
33k 39k
21
23
AFC pin of W band.
During AM, it determines
time constant of AGC
AFC pin of J band.
During AM, it determines
time constant of AGC.
GND
23 (24) DET OUT
1.25 1.0 1.25 1.0
Detection output pin
11k
24
24 (25) AF IN
0
0
0
×4
0
×4
Power amplifier input pin
82k
GND
VCC
25 (26)
RIPPLE
FILTER
17k
2.71 2.71 5.4 5.4
25
73k
Ripple filter
90k
26 (27) VCC
28
GND
(29, 30)
3.0 3.0 6.0 6.0
0
0
0
Power supply pin
0
Power GND
∗ The pin voltage of pin 6 during AM, it is the same pin voltage of pin 22 (23) during J BAND and is the same
pin voltage of pin 21 (22) during W BAND.
—5—
FM IF knee level
5
A — — A
A A A A
IB1
GV2
—6—
A
A — — — — B
A — — — — B
A — — — — B
THD2
GV4
THD3
VD4
AM detection output
distortion factor
Audio voltage gain
Audio distortion factor
Muting level
13
14
15
A
B
B
A
A
A
A
A
12
A — A
A
A
11
A — A
IB2
AM detection output level
10
AM meter current
AM IF voltage gain
9
A
A
A
A
A
A
A
VD3
A
B
A
B
B
B
6
A
A
A
A
A — A
A — — A
A — — A
VD2
THD1
A — — A
1
A
A
A
SW conditions
2 3 4 5
B A A A
B A A B
B A A B
VD1
ID1
ID2
GV1
Symbol
GV3
7
8
FM detection output
distortion factor
FM meter current
AM front end voltage gain
FM detection output level
4
6
AM circuit current
FM circuit current
FM front end voltage gain
Item
1
2
3
No.
Electrical Characteristics
VE
VE
VE
VD
IM
VD
VD
IM
VB
VD
VD
VD
Test
Point
IA
IA
VA
—
—
32
No signal, AM
No signal, FM
VIN1=40 dBµV, 100 MHz
VIN3=90 dBµV, 10.7 MHz
(1 kHz, 22.5 kHz DEV)
VIN3=level at a point 3 dB down from
VIN3=90 dBµV, 10.7 MHz
(1 kHz, 22.5 kHz DEV)
VIN3=90 dBµV, 10.7 MHz
(1 kHz, 75 kHz DEV)
VIN3=60 dBµV, 10.7 MHz
VIN2=60 dBµV, 1660 kHz
VIN3 when 455 kHz (1 kHz, 30 % MOD)
output is –34 dBm
VIN3=85 dBµV, 455 kHz
(1 kHz, 30 % MOD)
VIN3=85 dBµV, 455 kHz
(1 kHz, 30 % MOD)
VIN2=95 dBµV, 1660 kHz
(1 kHz, 30 % MOD)
VIN3=60 dBµV, 10.7 MHz
VIN4=–30 dBm, 1 kHz
Distortion factor for 50 mW output
VIN3=60 dBµV, 10.7 MHz
VIN4=–20 dBm, 1 kHz
Muting level for 50 mW output
VIN4=–20dBm, 1 kHz
Attenuation for 60 dBµV input
with VIN3 OFF
8
—
27
—
1.3
39
14
1.8
15
—
—
39
Min.
Conditions
15
0.9
31.5
0.6
3.0
77.5
20
3.5
22
0.3
24
77.5
4.8
7.6
39
Typ.
mA
mA
dB
Unit
dBµV
mA
dB
%
dBµV
dB
%
dB
%
mA
0 dBµV=1 µV
22
2.5
36
2.0
7.0
155 mVrms
27
7.0
29
2.0
32
155 mVrms
10.0
14.0
46
Max.
(See the Electrical Characteristics Test Circuit, Ta=25 °C, VCC=6 V)
CXA1691BM/BS
—7—
VIN3
VB
VA
VIN1
VIN2
2k
330
0.01µ
30p
24p
S2
CF1
B
A
0.01µ
100
S3
B
A
IFT
2k
B
B
A
A
S4
BAND AM
SELECT IF IN
15
16
0.01µ
S5
30p
IM
1µ
IF
AGC
NC METER GND AFC
18
19
20
21
0.01µ
AFC
FM
OSC
4.7µ
AGC
AFC
22
B
VD
AM
OSC
5
24p
VOL
4
S1
B
A
NF
3
1µ
2
CF3
150
1
0.047µ100µ
5k
VIN4
A
8
24k
24k
GND
VCC
VE
CF1 : AM 455kHz C.F.
CF3 : FM DISCRIMINATOR
IFT : AM 455kHz IFT
OSC : AM OSC
0.047µ
470µ
33k
0.1µ
33k
FM MUTE
DISCRI
50k
AF
IN RIPPLE VCC AF OUT GND
24
25
26
27
28
S6
1µ
0.012µ
1µ
DET
OUT
23
6
8p
30p
OSC
100k
AFC
7
CXA1691BM
11
10
9
8
NC AM IN FM RF REG
0.01µ
FM
IF IN
17
10p
1000p
150µH 43p
BPF
150
14
13
12
AM/FM FE FM IN
IF OUT GND
10µ
REG
Electrical Characteristics Test Circuit
CXA1691BM/BS
—8—
AM
FM
S1
ANT
T1
14
C6
0.01µ
13
12
CF1
R5
330
BAND AM
SELECT IF IN
15
16
CF2
FM
IF IN
17
AM/FM FE
FM
IF OUT GND RF IN
C5
10µ
L1
10
AM
RF
9
FM
RF
C12
10µ
50V
7
C13
4.7µ
50V
R6
1k
C14
10µ
50V
AFC
AGC
22
CXA1691BM
5
4
VOL
D1
C17
10µ
50V
2
1
CF3 C22 0.1µ
R3 150
C18
470µ
6.3V
C21
220µ
10V
GND
28
C20
0.1µ
AF
OUT
27
NF DISCRI MUTE
3
C4
6p
C8
4.7µ
50V
AF
IN RIPPLE VCC
24
25
26
C15
C19
0.47µ/ 0.1µ
50V
AM
OSC
C16
0.022µ
AFC
6
C3
22p L4
R1
100k
DET
OUT
23
C7
1p
FM
OSC
L3
REG
OUT
8
C2
18p
IF
AFC
NC METER GND AGC
18
19
20
21
NC
11
C1
2p
L2
RV2
10k
RV1
50k
Application circuits shown are typical examples illustrating the operation of the devices. Sony cannot assume responsibility for
any problems arising out of the use of these circuits or for any infringement of third party patent and other right due to same.
C10
0.01µ
R4
2.2k
C11
100p
BPF
Application Circuit 1
EPJ
S2
BATT
CXA1691BM/BS
—9—
AM
FM
S1
ANT
T1
C6
0.01µ
14
13
CF1
16
R5
330
17
NC
12
C1
2p
11
AM
RF
L2
FM
RF
10
FM
OSC
8
19
20
C12
10µ
50V
21
7
22
C13
10µ
50V
23
R6
1k
C14
4.7µ
50V
24
DET
OUT
VOL
5
C16
0.022µ
C17
10µ
50V
25
26
27
C15
C19
0.47µ/ 0.1µ
50V
D1
3
C8
4.7µ
50
C4
6p
C18
470µ
6.3V
28
29
GND
30
GND
C21
C20 220µ
0.1µ 10V
AF
OUT
MUTE
NC
0.1µ
1
2
C22
R3 150
CF3
NF DISCRI
4
AF
IN RIPPLE VCC
AM
OSC
6
C3
22p L4
R1
100k
AFC
C7
1p
CXA1691BS
REG
OUT
9
C2
18p
L3
IF
AFC AFC
NC METER GND AGC AGC
CF2
18
BAND AM
FM
SELECT IF IN IF IN
AM/FM FE
FM
IF OUT GND RF IN
15
C5
10µ
L1
Application circuits shown are typical examples illustrating the operation of the devices. Sony cannot assume responsibility for
any problems arising out of the use of these circuits or for any infringement of third party patent and other right due to same.
C10
0.01µ
R4
2.2k
C11
100p
BPF
Application Circuit 2
R2
10k
RV1
50k
EPJ
S2
BATT
CXA1691BM/BS
CXA1691BM/BS
Coil data
AM OSC
Core diameter ø 0.06 mm 2UEW
S
3
4
2
5
f (kHz)
1
6
796
L (µH)
1 to 3
270
QO
1 to 3
125
Number of widings (t)
1 to 3
4 to 6
107
29
Equivalent to L-5K7-H5 R12-1684X. Mitsumi Electric Co., Ltd.
or 7TRS-8441X TOKO Co., Ltd.
AM IFT
3
Core diameter ø 0.07 mm UEW
S
4
2
5
1
6
CO (pF)
1 to 3
180
QO
1 to 3
90
Number of widings (t)
1 to 2
2 to 3
4 to 6
111
35
7
Equivalent to 21K7-H5 R12-8558A. Mitsumi Electric Co., Ltd.
or 7MC-7789N TOKO Co., Ltd.
FM RF
φ 4mm
φ 0.6mm 4.5t
FM OSC
φ 4mm
φ 0.6mm 3.5t
AM bar antenna
f (kHz)
796
Primary
L (µH)
650
Primary
91 t
Secondary
20 t
Secondary
BPF
CF1
CF2
CF3
PFWE8
(88 to 108 MHz)
Soshin Electric Co., Ltd.
SFU-455B
SFE10.7MA5
CDA10.7MC1
Murata Mfg. Co., Ltd. Or BFCFL-455 TOKO Co., Ltd.
Murata Mfg. Co., Ltd.
Murata Mfg. Co., Ltd.
—10—
CXA1691BM/BS
Package Outline
Unit : mm
28PIN SOP (PLASTIC)
CXA1691BM
+ 0.4
18.8 – 0.1
+ 0.4
2.3 – 0.15
28
15
+ 0.2
0.1 – 0.05
14
1
+ 0.1
0.2 – 0.05
1.27
0.45 ± 0.1
0.24
0.5 ± 0.2
9.3
10.3 ± 0.4
+ 0.3
7.6 – 0.1
0.15
M
PACKAGE STRUCTURE
SONY CODE
SOP-28P-L04
EIAJ CODE
SOP028-P-0375
JEDEC CODE
PACKAGE MATERIAL
EPOXY RESIN
LEAD TREATMENT
SOLDER PLATING
LEAD MATERIAL
42/COPPER ALLOY
PACKAGE MASS
0.7g
30PIN SDIP (PLASTIC)
+ 0.1
05
0.25 – 0.
CXA1691BS
+ 0.4
26.9 – 0.1
30
+ 0.3
8.5 – 0.1
10.16
16
0° to 15°
15
1
+ 0.4
3.7 – 0.1
0.5 MIN
1.778
0.5 ± 0.1
3.0 MIN
Two kinds of package surface:
1.All mat surface type.
2.All mirror surface type.
0.9 ± 0.15
PACKAGE STRUCTURE
MOLDING COMPOUND
EPOXY RESIN
SONY CODE
SDIP-30P-01
LEAD TREATMENT
SOLDER/PALLADIUM
PLATING
EIAJ CODE
SDIP030-P-0400
LEAD MATERIAL
COPPER ALLOY
PACKAGE MASS
1.8g
JEDEC CODE
NOTE : PALLADIUM PLATING
This product uses S-PdPPF (Sony Spec.-Palladium Pre-Plated Lead Frame).
—11—
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