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TDA7110 Datasheet(PDF) 10 Page - Infineon Technologies AG |
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TDA7110 Datasheet(HTML) 10 Page - Infineon Technologies AG |
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10 / 39 page  Functional Description 2 - 4 TDA7110 Wireless Components Data Sheet, December 2008 4 LF Output of the charge pump and input of the VCO control voltage. The loop bandwidth of the PLL is 150 kHz when only the internal loop filter is used. The loop bandwidth may be reduced by applying an external RC network referencing to the positive supply VS (pin 3). 5 GND General ground connection. 6 ASKDTA Digital amplitude modulation can be imparted to the Power Amplifier through this pin. A logic high (ASKDTA > 1.5 V or open) enables the Power Amplifier. A logic low (ASKDTA < 0.5 V) disables the Power Amplifier. 7 FSKDTA Digital frequency modulation can be imparted to the Xtal Oscillator by this pin. The VCO-frequency varies in accordance to the frequency of the reference oscillator. A logic high (FSKDTA > 1.5V or open) sets the FSK switch to a high impedance state. A logic low (FSKDTA < 0.5 V) closes the FSK switch from FSKOUT (pin 11) to FSKGND (pin 12). A capacitor can be switched to the reference crystal network this way. The Xtal Oscillator frequency will be shifted giving the designed FSK frequency deviation. V S 10 k Ω 4 35 k Ω 15 pF 140 pF +1.2 V 90 k Ω 6 50 pF 30 μA 60 k Ω +1.1 V +1.2 V 90 k Ω 7 60 k Ω +1.1 V 30 μA |
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Similar Description - TDA7110 |
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