SA2104/SA2104S
3V AM/FM+MPX TUNER IC(FOR DIGITAL TUNING SYSTEM)
DESCRIPTION
The SA2104/SA2104S are single-chip tuner ICs that incorporate
FM/AM and MPX circuits, which are designed for portable radios and 3V
headphone radios.
The SA2104/SA2104S are suitable for digital tuning system
applications. FM local oscillation voltage is set up low relativity, for NEW
FCC.
SDIP-24-300-1.778
FEATURES
* Operating supply voltage range: V
CC
=1.8~10V (T
amb
=25°C)
* For NEW FCC
* FM/AM and MPX integrated in a single-chip.
* Build in FM/AM IF count buffer.
FM: 1.3375MHz (1/8 dividing)
AM: 450kHz
* Build in mute circuit for IF count output according to field strength.
* Build in FM MPX VCO circuit
* Build in FM/AM OSC buffer output for DTS applications.
* Build in AM low cut circuit
* Build in stereo indicator.
* Low supply current. (V
CC
=3V, T
amb
=25°C)
I
CCq
(FM)=11.0mA (Typ.)
I
CCq
(AM)=7.5mA (Typ.)
SSOP-24-300-0.65
ORDERING INFORMATION
Part No.
SA2104
SA2104S
Package
SDIP-24-300-1.778
SSOP-24-300-0.65
BLOCK DIAGRAM
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:2.0
2004.07.31
Page 1 of 13
SA2104/SA2104S
MAXIMUM RATINGS
(T
amb
=25°C)
Parameter
Maximum Supply Voltage
Indicator Drive Current
Indicator Voltage
Power Dissipation
SA2104
SA2104S
Symbol
V
CC
I
LED
V
LED
P
D
(note)
T
opr
T
stg
Rating
14
10
8
1200
500
-20~+70
-40~+125
Unit
V
mA
V
mW
°C
°C
Operating Temperature
Storage Temperature
Note: Derated above Tamb=25°C in the proportion of 9.6mW/°C for SA2104 of 4mW/°C for SA2104S.
ELECTRICAL CHARACTERISTICS
(Unless otherwise specified, T
amb
=25°C, V
CC
=3V, F/E : f=98 MHz,
fm=1 kHz ,FM IF : f=10.7 MHz,
∆f
=±22.5 kHz, fm= 1 kHz . AM : f=1 MHz, MOD=30%, fm=1 kHz. MPX: fm=1kHz)
Parameter
Quiescent Current
Input Limiting Voltage
F/E
Local
OSC
Symbol
I
CC(FM)
I
CC(AM)
V
in(lim)
Test Condition
V
IN
=0, FM mode
V
IN
=0, AM mode
V
IN
=60 dBµV EMF
-3dB limiting
FOSC=108.7MHz
V
IN
=80dBµV EMF
-3dB limiting
V
IN
=80dBµV EMF
V
IN
=80dBµV EMF
V
IN
=80dBµV EMF
V
IN
=80dBµV EMF
V
IN
=80dBµV EMF
SW7: ON
V
IN
=80dBµV EMF
SW7: ON
SW7: ON
V
IN
=27dBµV EMF
V
IN
=60dBµV EMF
V
IN
=60dBµV EMF
V
IN
=60dBµV EMF
fOSC=1.45MHz
Min.
--
--
--
23
35
200
--
--
--
1.3373
200
40
20
60
--
--
44
200
38
Typ.
11.0
7.5
10
35
38
270
75
0.3
60
1.3375
260
45
38
90
41
0.7
66
250
43
Max.
18
14
--
--
47
300
--
--
--
1.3377
--
50
70
120
--
--
--
--
48
Unit
mA
dBµV
EMF
mVrms
dBµV
EMF
mVrms
dB
%
dB
MHz
mVp-p
dBµV
EMF
mVrms
mVrms
dB
%
mVrms
mVp-p
dBµV
EMF
BUFFER V
OSC
(buff)
FM
V
in(lim)
IF
V
OD
S/N
THD
AMR
f
IF
(FM)
V
IF
(FM)
IF sens
(FM)
GV
V
OD
S/N
THD
AM
IF sens
(AM)
OUTPUT Voltage
Input Limiting Voltage
Recovered Output Voltage
Signal To Noise Ratio
Total Harmonic Distortion
FM AM Rejection Ration
IF
IF Count Output
Frequency
IF Count Output Voltage
IF Count Output Sensitivity
Gain
Recovered Output Voltage
Signal To Noise Ratio
Total Harmonic Distortion
AM
Voltage
IF Count Output Voltage
IF Count Output Sensitivity
Local OSC Buffer Output V
OSC
(buff)
V
IF
(AM) V
IN
=60dBµV EMF, SW7: ON
SW7: ON
(TO be continued)
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:2.0
2004.07.31
Page 2 of 13
SA2104/SA2104S
(Continued)
Parameter
Pin (17) Output Resistance
Input Resistance
Output Resistance
Max.
Composite
Symbol
R17
RIN
ROUT
Signal Vin MAX
(Stereo)
Test Condition
FM mode
AM mode
--
--
L+R=90%, P=10%,
SW3: LPF ON fm=1kHz,
THD=3%
L+R=180mVrms, fm=100Hz
Separation
Sep
THD
(Monaural)
THD
(Stereo)
GV
C.B.
VL (ON)
VL (OFF)
VH
C.R.
S/N
MUTE
Pilot input(19KHZ)
To LED turn off from LED
turn on
P=15mVrms
Vin=200mVrms
Vin=200mVrms
P=20mVrms
SW3: LPF ON
Total
MPX
Harmonic
Distortion
Stereo
Monaural
Vin=200mVrms
L+R=180mVrms,
P=20mVrms SW3: LPF ON
Vin=200mVrms
Vin=200mVrms
fm=1kHz
fm=10kHz
--
35
--
--
--
-2.7
-1.5
--
5
--
--
--
--
44
44
44
0.3
0.3
-1.2
0
10
8
2
±8
80
80
--
--
--
--
%
--
0.2
1.5
14
--
--
--
--
--
mVrms
dB
dB
dB
--
700
--
mVrms
Min.
--
--
--
--
Typ.
0.75
15.5
55
5
Max.
--
--
--
--
Unit
kΩ
kΩ
kΩ
Input Voltage
Voltage Gain
Channel Balance
Stereo
LED
Sensitivity
ON
OFF
Stereo LED Hysteresis
Capture Range
Signal To Noise Ratio
Muting Attenuation
mVrms
%
dB
dB
COIL DATA
Coil No.
L1 FM RF
L2 FM OSC
T1 AM OSC
T2 AM IFT
Test Freq.
100MHz
100MHz
796kHz
455kHz
L
(µH)
--
--
268
--
Co
(pF)
--
--
--
470
Qo
79
76
65
60
Turns
1-2
--
--
19
--
2-3
--
--
95
--
1-3
--
--
--
109
1-4
2
1
Wire
4-6
--
2
(mm∅)
0.16UEW
0.16UEW
0.05UEW
0.05UEW
2
--
--
--
--
7
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:2.0
2004.07.31
Page 3 of 13
SA2104/SA2104S
PIN CONFIGURATION
FM RF
OUT
OSC OUT
DET OUT
AM RFIN
AM OSC
FM OSC
ST LED
MPX IN
RF V
CC
IF REQ
LPF1
R-OUT
AM LOW CUT
FM RF
IN
AM IF IN
FM IF IN
PIN DESCRIPTIONS AND QUIESCENT VOLTAGE
Pin
No.
1
Symbol
RF GND
Pin description
GND for FM OSC stage
Internal circuit
--
Pin voltage (Typ.) (V)
AM
0
FM
0
2
FM-RFin
FM-RF input pin.
MIX OUT
RF GND
L-OUT
GND
AGC
QUAD
V
CC
LPF2
0
0.8
3
AM
CUT
LOW
AM low frequency cut down
pin
1.0
--
4
MIX OUT
AM/FM mixer output pin.
3.0
0.5
5
VCC
VCC for AM, FM IF, FM
MPX stage
--
3.0
3.0
(To be continued)
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:2.0
2004.07.31
Page 4 of 13
SA2104/SA2104S
(Continued)
Pin
No.
Symbol
Pin description
Internal circuit
Pin voltage (Typ.) (V)
AM
FM
6
AMIF IN
AMIF input pin.
2.3
2.5
7
FMIF IN
FMIF input.
3.0
3.0
8
GND
GND for AM, FM IF, FM
MPX stage.
--
0
0
9
AGC
Auto gain control pin.
0
0
10
QUAD
FM Quad
2.5
2.2
11
12
R-OUT
L-OUT
Right/Left
port.
channel
output
1.2
1.2
LPF terminal for phase
detector
13
LPF2
Bias terminal for AM/FM SW
circuit V13=GND→AM
V13=OPEN→FM
(To be continued)
0
2.2
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:2.0
2004.07.31
Page 5 of 13
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