Panasonic AN7293 Fm-if, nc, mpx ic for car radio Datasheet

ICs for FM/AM Tuner
AN7293NSC
FM-IF, NC, MPX IC for car radio
■ Overview
Unit: mm
The AN7293NSC is an IC having FM-IF, NC and
MPX functions for car radio. A tuner block of car radio
can be constructed in combination with the AN7289NFBQ/
NSC. Small outline package product (the AN7293NFBQ)
is also available.
1
16
7.2±0.3
17
0.3
■ Features
9.3±0.3
17.81±0.3
32
0.35±0.1
1.0
Seating plane
0.15
0.9
1.23
0.1±0.1
2.0±0.2
• A less number of external components is required (8
components reduction compared with our conventional
IC)
• Neighbouring-station interference characteristics improvement by band-ATC function
• Band-mute on/off function
SSOP032-P-0375
■ Applications
• Car radios
17
18
19
20
21
22
VBAND
IF-Count./ST-Ind./SD
23
24
AFC
25
VCC
26
27
28
29
30
31
32
IF In
GND
■ Block Diagram
VREF
Noise det.
16
15
14
13
11
10
VCO PLL
L-Out
9
8
7
Sep. Adj.
6
PNL
Pilot
det.
Demod.
ATC Adj.
5
Forced Mono
4
Multipath det.
3
2
S-Meter
S-Meter Adj.
1
Level det.
SD, IF counter
Band Mute
Mute
12
IF det.
R-Out
IF limiter
1
AN7293NSC
ICs for FM/AM Tuner
■ Pin Description
Pin No.
Description
Pin No.
Description
1
Control voltage adjustment
17
Band signal output/band mute SW
2
Control voltage
18
PNL low-pass filter
3
Multiple-path noise input
19
PNL AGC
4
Multiple-path detection
20
PNL input
5
ASC adjustment/forced monaural
21
Detection output
6
ATC adjustment
22
PNL output hold
7
Separation adjustment
23
SD/FM-IF counter output/stereo indicator
8
ATC low-pass filter
24
SD sensitivity adjustment
9
R-channel output
25
AFC voltage
10
L-channel output
26
VCC
11
Mute voltage
27
FM detection
12
Pilot detection low-pass filter
28
Soft mute adjustment
13
PLL low-pass filter
29
GND
14
PLL low-pass filter
30
VREF
15
VCO
31
IF bypass
16
Pilot cancel control low-pass filter
32
IF input
■ Absolute Maximum Ratings
Parameter
Symbol
Rating
Unit
VCC
9.1
V
ICC
45
mA
PD
380.2
mW
Topr
−30 to +80
°C
Tstg
−55 to +125
°C
Supply voltage
Supply current
Power dissipation
*2
Operating ambient temperature
Storage temperature
*1
*1
Note) *1: Ta = 25°C except power dissipation, operating ambient temperature and storage temperature.
*2: Ta = 80°C
■ Recommended Operating Range
Parameter
Supply voltage
2
Symbol
Range
Unit
VCC
7.2 to 9.0
V
ICs for FM/AM Tuner
AN7293NSC
■ Electrical Characteristics at Ta = 25°C
Unless otherwise specified, VCC = 8V, VIN1 is f = 10.70 MHz, Mod. = 1 kHz, 30%
FM modulation stereo input is L + R = 90% VP = 10%
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Control voltage (1)
VC1
Without signal input, pin 2 DC voltage
0.0
0.3
0.9
V
Control voltage (2)
VC2
VIN1 = 40 dBµ, pin 2 DC voltage
0.7
1.2
1.7
V
Control voltage (3)
VC3
VIN1 = 70 dBµ, pin 2 DC voltage
2.5
3.2
3.9
V
Control voltage (4)
VC4
VIN1 = 100 dBµ, pin 2 DC voltage
4.5
5.3
5.8
V
Control voltage (5)
VC5
VC5 = VC3 − VC2
1.8
2.0
2.2
V
Control voltage (6)
VC6
VC6 = VC4 − VC3
1.9
2.1
2.3
V
Output level L-channel
VOL
VIN1 = 70 dBµ, pin 10 AC voltage
85
105
125
mV[rms]
Output level R-channel
VOR
VIN1 = 70 dBµ, pin 9 AC voltage
85
105
125
mV[rms]
Channel balance
CB
CB = 20·log (VOL/VOR)
−1.0
0
1.0
dB
Residual pilot voltage
VPC
VP = 10% modulation, VIN1 = 70 dBµ,
pin 22 output voltage

4
14
mV[rms]
LAMPON 19 kHz modulation, Modulation factor
at which pin 23 becomes under 1 V
1.3
4.0
6.3
%
L+R = 90%, VP = 10%
Larger separation value after
changing over pin 7 external resistor
25
33

dB
25
33

dB
Modulation at VP = 6.5%
Referred to 19 kHz
±0.4
±0.7

%
Stereo lamp turn-on level
Separation L-channel
SepL
Separation R-channel
SepR
Capture range
CR
Counter output level (1)
VIF1
VIN1 = 100 dBµ, V24 = 2 V
pin 23 output voltage
120
140
160
mV[rms]
Counter output level (2)
VIF2
VIN1 = 100 dBµ, V24 = 5 V
0
2
5
mV[rms]
pin 23 output voltage
Monaural THD (L)
THDL
VIN2 monaural input, 500 mV[0-p]
1 kHz, L-ch. output distortion factor

0.1
0.3
%
Monaural THD (R)
THDR
VIN2 monaural input, 500 mV[0-p]
1 kHz, R-ch. output distortion factor

0.1
0.3
%
Stereo THD (L)
THDSTL
VIN2 stereo input, 500 mV[0-p]
1 kHz, L-ch. output distortion factor

0.1
0.3
%
Stereo THD (R)
THDSTR
VIN2 stereo input, 500 mV[0-p]
1 kHz, R-ch. output distortion factor

0.1
0.3
%
PNL-AGC voltage (1)
VAGC1
VIN2 = Without input
pin 19 DC voltage
1.2
1.4
1.7
V
PNL-AGC voltage (2)
VAGC2
Input VIN2 = 100 mV, f = 100 kHz
Difference from VAGC1
0.1
0.35
0.60
V
Residual noise voltage
VNR
VIN2 = (pulse width 10 µs, 1 V[p-p]
1 kHz), L-ch. output
0.0
0.2
0.7
mV[rms]
3
AN7293NSC
ICs for FM/AM Tuner
■ Electrical Characteristics at Ta = 25°C
Unless otherwise specified, VCC = 8V, VIN1 is f = 10.70 MHz, Mod. = 1 kHz, 30%
FM modulation stereo input is L + R = 90% VP = 10%
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
SD sensitivity
SDS
VIN1 when V24 = 2 V, V23 > 2 V
68
78
88
dBµ
SD bandwidth
SDW
VIN bandwidth when V24 = 2 V,
and V23 > 2 V, VIN1 = 100 dBµ
100
130
160
kHz
Supply current
ITOT
Without input
30
37
44
mA
Limiting sensitivity
VLIM
VIN1 input level when pin 9 AC
voltage drops by 3 dB
24
32
38
dBµ
ATC
VATC
L-ch. output ratio when
V6 = 2 V and 0 V
6
10
14
dB
VIN2 = (pulse width 1 µs, 0.3 V[p-p]
1 kHz) pin 22 output pulse width
16
23
30
µs
Min
Typ
Max
Unit
2.0
6.0
10.0
dB
− 0.1
0.0
0.1
V
Gate pulse width
PW
• Design reference data
Note) The following characteristics are the reference values for design and not guaranteed values.
Parameter
Stereo lamp turn-off level
AFC offset voltage
4
Symbol
Conditions
LAMPOFF Ratio between the modulation factor
when pin 23 becomes 2 V or higher
and LAMPON
VAFC
Without signal input, DC potential
difference between pin 25 and pin 30
ICs for FM/AM Tuner
AN7293NSC
100 µF
VBAND
IF-Counter
ST-Indicator
SD
VCC
■ Application circuit Example
470 pF
19
0.47 µF
330 kΩ
VCO PLL
Noise det.
0.047 µF 18
PNL
0.1 µF
21
680 pF
23
100 kΩ
24
5
Multipath det.
VREF
GND 29
L-Out
0.022 µF
0.022 µF
R-Out
Sep. Adj.
0.1µF
50 kΩ
ATC Adj.
50 kΩ
ASC Adj.
Forced Mono
4
0.1µF
3
1000 pF
32
M53
Level det.
0.022 µF
IF limiter
31
IF In
9
6
IF det.
27
30
AFC
0.1 µF
10 kΩ
0.1 µF
VREF
0.1 µF
7
28
100 kΩ
12
0.01 µF
26
2.2 kΩ
0.1 µF
8
Mute
25
180 pF(pH)
0.1 µF
10
Demod.
SD, IF counter
Band Mute
0.01 µF
1µF
14
11
22
5.6 kΩ
CERALOCK
(912 k)
15
13 10 kΩ
20
Pilot
det.
51 kΩ
0.01 µF
1µF
16
17
0.1 µF
330 kΩ
2 100 kΩ
100 pF
1 50kΩ
S-Meter
S-Meter Adj.
M53
5
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