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AN7233SH [PANASONIC]

FM/AM Tuner for 1.5V Headphone Stereo; FM / AM调谐器的1.5V立体声耳机
AN7233SH
型号： AN7233SH
厂家： PANASONIC    PANASONIC
描述：

FM/AM Tuner for 1.5V Headphone Stereo
FM / AM调谐器的1.5V立体声耳机

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ICs for FM/AM Tuner  
AN7233SH  
FM/AM Tuner for 1.5V Headphone Stereo  
■ Overview  
Unit : mm  
The AN7233SH is an IC for tuner of 1.5V headphone  
stereo. It incorporates AM tuner + FM IF + FM detector +  
FM MPX and has been provided with the station detec-  
tion function and IF count output function required to sup-  
port DTS, and the AM IF output function required to sup-  
port AM stereo. It is included in the 28-lead SSOP pack-  
age with 0.5mm pitch.  
7.80±0.20  
28  
15  
0 ~10˚  
0.5±0.20  
■ Features  
•
•
•
•
•
•
Low voltage operation : VCC=1.0V or more  
AM tuner/FM IF + FM detection + FM MPX : one chip  
DTS supported  
AM stereo support possible  
Adjustable sensitivity for station detection  
Small package  
1
14  
+ 0.10  
0.2  
– 0.05  
SEATING PLANE  
(0.65)  
0.50  
SEATING PLANE  
28-lead SSOP package (SSOP028-P-0300)  
■ Block Diagram  
28  
27  
26  
25  
24  
23  
22  
21  
20  
19  
18  
17  
16  
15  
AM  
Osc  
MPX  
SW  
AM AF  
Buffer  
ST Ind.  
VCO  
LPF  
AM  
Mix.  
Freq.  
Divider  
AM Det.  
AGC  
PC  
AM  
RF  
LEVEL  
Det.  
FM  
Det.  
IF  
SD  
1
2
3
4
5
6
7
8
9
10  
VCC  
11  
12  
GND  
13  
14  
ICs for FM/AM Tuner  
AN7233SH  
■ Absolute Maximum Ratings (Ta=25˚C)  
Parameter  
Symbol  
Rating  
7.0  
Unit  
V
Supply Voltage  
Supply Current  
VCC  
ICC  
10  
mA  
mW  
˚C  
Power Dissipation  
PD  
70  
Operating Ambient Temperature  
Storage Temperature  
Topr  
Tstg  
–20 ~ + 75  
–55 ~ + 125  
˚C  
■ Recommended Operating Range (Ta=25˚C)  
Parameter  
Symbol  
Range  
Operating Supply Voltage Range  
VCC  
1.0V ~ 2.0V  
■ Electrical Characteristics (VCC =1.2V, Ta= 25˚C±2˚C)  
Parameter  
Symbol  
Condition  
min.  
typ.  
max.  
Unit  
FM  
Total Circuit Current  
Output Voltage  
Itot (FM)  
VO (FM)  
No signals (under VCO operating)  
Vi for VO = –3dB  
5.5  
26  
38  
55  
7.5  
9.5  
61  
48  
mA  
mV  
44  
45  
Limiting Sensitivity  
S/N Ratio  
Vi (lim)  
dBµ  
dB  
S/N (FM)  
THD (FM)  
Vi (FMLED1)  
Vi (FMLED2)  
VOIF1 (FM)  
THD  
1.4  
61  
69  
86  
%
LED ON Sensitivity  
LED Decreased Voltage ON Sensitivity  
IF Buffer Output 1  
VCC  
VCC  
=
=
1.1V, No modulation REQ OFF  
1.0V, No modulation REQ OFF  
dBµ  
dBµ  
mVrms  
55  
58  
48  
48  
48  
VIN= 80dBµ, No modulation  
VCC=1.0V, VIN= 80dBµ,  
No modulation  
IF Buffer Output 2  
19  
mVrms  
VOIF2 (FM)  
AM  
Total Circuit Current  
Output Voltage  
Itot (AM)  
VO (AM)  
3.0  
21  
12  
36  
5.0  
31  
24  
7.0  
41  
mA  
mV  
mV  
dBµ  
%
Weak Input Detection Output Voltage  
S/N Ratio  
VO (AMMIN)  
S/N (AM)  
THD (AM)  
Vi (AMLED)  
VIN= 26dBµ  
THD  
5.0  
30  
LED ON Sensitivity  
VCC  
=
1.1 V, No modulation REQ OFF  
16  
29  
23  
43  
dB  
VCC=1.1V, VIN= 45dBµ,  
No modulation  
IF Buffer Output 1  
VOIF1 (AM)  
57  
mVrms  
VCC=1.0V, VIN= 45dBµ,  
No modulation  
IF Buffer Output 2  
VOIF2 (AM)  
VO (AM IF)  
15  
15  
mVrms  
mVrms  
AM IF Output Voltage  
VIN= 50dBµ, No modulation  
30  
60  
2
MPX  
Channel Balance  
Separation  
CB  
Sep.  
Monaural Df= 75kHz  
MPX Portion only L + R= 30%  
L + R= 90%, Pilot= 10%  
Pilot only  
–2  
22  
0
dB  
dB  
%
35  
THD (STEREO)  
VP (ON)  
THD (Stereo)  
5.0  
7.0  
Stereo LED ON Level  
Stereo LED OFF Level  
4.8  
1.9  
%
VP (OFF)  
Pilot only  
0.8  
%
Note) FM : f = 10.7MHz, Df = 22.5kHz, fm = 1kHz, VIN = 80dBµ, AM : f = 1MHz, Mod. = 30%, fm = 1kHz, VIN = 50dBµ  
MPX : f = 10.7MHz, Df = 75kHz (L+ R90%, Pilot90%), fm = 1kHz, VIN = 80dBµ  
ICs for FM/AM Tuner  
AN7233SH  
■ Pin Descriptions  
Pin No.  
Pin Name  
Pin No.  
Pin Name  
15 AM Detection Pin  
16 AM AF Amp. Input Pin  
1
2
3
4
5
6
7
8
9
AM RF Amp. Input  
AM Mixer Output  
Supply Pin for IF Input Portion/AMOSC Section 17 Oscillation Prevention Capacitor Pin  
AM AGC  
18 FM/AM Detection Output Pin  
19 MPX Input Pin  
AM IF Amp. Input  
FM IF Amp. Input  
20 Rch Output Pin  
SD LED ON Level Adjustment  
Stereo LED Drive/AMIF Output Pin  
SD LED Drive Pin  
21 Lch Output Pin  
22 AM/FM Changeover/19kHz Output Pin  
23 Loop Filter Pin 1 for PLL  
24 Loop Filter Pin 2 for PLL  
25 CR Connecting Pin for VCO  
26 Low Pass Filter Pin 1 for Pilot Detection  
10 Supply Pin  
11 Phase-Shifter Pin for FM Detection  
12 GND Pin  
Low Pass Filter Pin 2 for Forced  
MONO/Pilot Detection  
13 Output for FM/AM IF Count  
14 IF Count Control Pin  
27  
28 AM Local Oscillation Coil Pin  
4.7µF  
■ Application Circuit  
Freg.  
Audio  
Analazer  
MPX Fillter  
Counter  
4.7µF  
V
Tuning Electric Current  
RLO2U8 – M  
V1  
MONO.  
AM  
24kΩ  
0.22µF  
0.1µF  
VCC  
KV1281  
STEREO  
SG  
0.33µF  
10pF  
0.022µF  
1µF  
28  
27  
26  
25  
24  
23  
22  
21  
20  
19  
18  
17  
16  
15  
AM  
OSC  
ST  
Ind.  
AM AF  
Buffer  
MPX  
SW  
LPF  
PC  
VCO  
AM  
Mix.  
AM Det.  
AGC  
Divider  
FM  
Det.  
AM  
RF  
LEVEL  
Det.  
IF  
SD  
1
2
3
4
+
5
6
7
8
9
10  
11  
12  
13  
14  
AMSG  
0.022µF  
3.3  
kΩ  
+
50Ω  
REQ  
270pF  
IF Count  
AMIF  
3V  
FMSG  
0.022µF  
50Ω  
RF  
V
Voltage  
Meter  

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