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TDA7331 Datasheet(PDF) 2 Page - STMicroelectronics

Part No. TDA7331
Description  SINGLE CHIP RDS DEMODULATOR FILTER
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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 2 page
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MPX
VREF
OSEL
FILOUT
GND
N.C.
N.C.
N.C.
OSCOUT
1
3
2
4
5
6
7
8
9
RDCL
RDDA
QUAL
VS
ARI
N.C.
FSEL
TM
EXTRES
20
19
18
17
16
14
15
13
12
D97AU687
OSCIN
10
T57
11
PIN CONNECTION
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
VS
Supply Voltage
7
V
Top
Operating Temperature Range
-40 to 85
°C
Tstg
Storage Temperature
-55 to 150
°C
PIN FUNCTION
N
o pin
Name
Functional description
1
MPX
RDS input signal
2
VREF
Reference voltage
3
OSEL
Oscillator selector pin: - open, or closed to Vs = quartz oscillator
- closed to GND = external driven
4
FILOUT
Filter output
5
GND
Ground
6
nc
Not connected
7
nc
Not connected
8
nc
Not connected
9
OSCOUT
Oscillator output
10
OSCIN
Oscillator input
11
T57
Testing output pin: 57kHz clock output
12
RDCL
RDS clock output 1187.5Hz
13
RDDA
RDS data output
14
QUAL
Output for signal quality indication (High = good)
15
ARI
Output for ARI indication: - high when RDS+ARI are present
- high when only ARI is present
- low when only RDS is present
- undefined when nos signal is present
16
Vs
Supply voltage
17
nc
Not connected
18
FSEL
Frequency selector pin: - 100K to VS = 17.328MHz
- open = 4.332MHz
- closed to VS = 8.664MHz
19
TM
Test mode pin:
- open = normal operation
- closed to VS = testmode
20
EXTRES
Reset pin: - open = run mode
- closed to VS = reset condition
TDA7331
2/7




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