E-TDA7479DTR STMicroelectronics, E-TDA7479DTR Datasheet - Page 8

• Manufacturer Part Number: E-TDA7479DTR
• Description: IC DEMOD/FILTER RDS SGL SOIC-16
• Manufacturer: STMicroelectronics
• Type: RDS Demodulator, Filterr

Specifications of E-TDA7479DTR

• Applications: FM Radio Receiver
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (7.5mm Width, 13 Leads)
• Pin Count: 16
• Screening Level: Industrial
• Package Type: SOIC W
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Oscillator controls (FSEL, OSEL)
4
8/12
Oscillator controls (FSEL, OSEL)
Three different crystal frequencies can be used. The adoption of the internal clock divider to
the external crystal is achieved via the input pin FSEL. See the following table for reference:
Table 6.
A special mode is introduced to reduce EMI. With pin OSEL connected to GND the internal
oscillator is switched off and an external sinusoidal frequency could be applied on OSCIN.
The peak to peak voltage of this signal can be reduced down to 60mV.
In this mode the frequency selection via FSEL is still active.
Suggested values of C1 and C2 are shown in the following table:
Table 7.
17.328MHz
4.332MHz
8.664MHz
Crystal
17.328MHz
4.332MHz
8.664MHz
Crystal
Crystal frequencies
C1 and C2 value
connected to GND or open connected to Vs external resistor of 100K to Vs
27pF
27pF
27pF
C1
FSEL (pin configuration)
47pF
C2
-
-
TDA7479