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TDA7479DTR

P1-P3P4-P6P7-P9P10-P12
Block diagram and pin description TDA7479
4/12
Table 2. Pin description
No pin Name Description
1 QUAL Output for signal quality indication (High = good)
2 RDDA RDS data output
3 VREF Reference voltage
4 MPX RDS input signal
5 OSEL
Oscillator selector pin:
– open, closed to V
S
= quartz oscillator
– closed to GND = external driven
6 GND Ground
7ARI
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
8 FILOUT Filter output
9 FSEL
Frequency selector pin:
– 100 kHz to V
S
= 17.328 MHz
– open = 4.332MHz
– closed to VS = 8.664 MHz
10 TM
Test mode pin:
– open = normal operation
– closed to VS = test mode
11 EXTRES
Reset pin:
– open = run mode
– -closed to VS = reset condition
12 V
S
Supply voltage
13 OSCIN Oscillator input
14 OSCOUT Oscillator output
15 T57 Testing output pin: 57 kHz clock output
16 RDCL RDS clock output 1187.5 Hz
TDA7479 Electrical specification
5/12
2 Electrical specification
2.1 Thermal data
2.2 Absolute maximum ratings
2.3 Electrical characteristics
Table 3. Thermal data
Symbol Parameter SO16 TSSOP16 Unit
R
th j-case
Thermal resistance junction to case Max. 200 160 °C/W
Table 4. Absolute maximum ratings
Symbol Parameter Value Unit
V
S
Supply voltage -0.3 to 7 V
T
op
Operating temperature range -40 to 85 °C
T
stg
Storage temperature -55 to 150 °C
Table 5. Electrical characteristics
(T
amb
= 25°C, V
S
= 5V, unless otherwise specified)
Symbol Parameter Test condition Min. Typ. Max. Unit
V
S
Supply voltage 4.5 5 5.5 V
I
S
Supply current 7.5 11.0 mA
Filter
f
C
Center frequency 56.5 57 57.5 kHz
BW 3dB Bandwidth 2.5 3 3.5 kHz
G Gain f = 57 kHz 18 20 22 dB
A Attenuation
f ± 4 kHz 18 22 dB
f = 38 kHz 50 60 dB
f = 67 kHz 35 45 dB
R
I
Input impedance of MPX 80 120 150 K
R
L
Load impedance on FILOUT 1 M
S/N Signal to noise ratio V
IN
= 3 mVrms 30 40 dB
V
IN
MPX input signal
f = 19 kHz; T3 40 dB
(1)
f = 57 kHz (RDS+ ARI)
1000
50
mV
RMS
mV
RMS
S
RDS
RDS detection sensitivity 1 mVrms
S
ARI
ARI Detection Sensitivity 3 mVrms
Electrical specification TDA7479
6/12
V
REF
Reference V
S
/2 V
Demodulator
Input pins (EXTRES, FSEL, TM:) all with internal pull down resistor
Input pin (OSEL): with internal pull up resistor
I
PD
Input current V
IN
= 5 V (pull-down input) 15 30 A
I
PU
Input current V
IN
= 0 V (pull-up input) -25 -10 A
V
IH
Input voltage high
0.7 · V
S
0.8 · V
S
V
V
IL
Input voltage low
0.2 · V
S
0.3 · V
S
V
Output pins (RDCL, RDDA, ARI, QUAL, T57)
V
OH
Output voltage high I
L
= 0.5mA 4 4.6 V
V
OL
Output voltage low I
L
= 0.5mA 0.4 1 V
Oscillator
V
CLL
Input level OSCIN pin OSEL = open circuit 1 V
V
CLH
Input level OSCIN pin OSEL = open circuit 4 V
Amplitude OSCOUT OSEL = open circuit 4.5 V
V
PP
Amplitude OSCIN
(for external drive)
OSEL = GND, f = 4.332 MHz
OSEL = GND, f = 8.664 MHz
100
120
mVpp
mVpp
OSEL = GND, f = 17.328 MHz 150 mVpp
1. The 3
rd
harmonic (57 kHz) must be less than -40 dB with respect to the input signal plus gain.
Table 5. Electrical characteristics (continued)
(T
amb
= 25°C, V
S
= 5V, unless otherwise specified)
Symbol Parameter Test condition Min. Typ. Max. Unit
P1-P3P4-P6P7-P9P10-P12

TDA7479DTR

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Buy TDA7479DTR
Manufacturer:
STMicroelectronics
Description:
RF Wireless Misc SINGLE CHIP DEMOD
Lifecycle:
New from this manufacturer.
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