TSA5523MSLASHC1 datasheet(13/20 Pages) PHILIPS

tên linh kiện	TSA5523M/C1

Giải thích chi tiết về linh kiện	1.4 GHz I2C-bus controlled multimedia synthesizer

PDF	20 Pages

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nhà sản xuất	PHILIPS [NXP Semiconductors]

Trang chủ	http://www.nxp.com

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13 / 20 page

1996 Dec 17

Philips Semiconductors

Product speciﬁcation

1.4 GHz I2C-bus controlled multimedia

synthesizer

TSA5523M

Fig.5 Prescaler Smith chart (S11) of typical input impedance (ZL =50 Ω; pin 2).

handbook, full pagewidth

MGG753

0.2

0.5

0.2

0.5

∞

0.2

0.5

+ j

− j

1.3 GHz

1 GHz

100 MHz

500 MHz

APPLICATION INFORMATION

Tuning ampliﬁer

The tuning amplifier is able to drive the varicap voltage

without an external transistor. The Vtune output must be

connected to an external load of 27 k

Ω connected to the

tuning voltage supply. Figures 6 and 7 illustrate a possible

loop filter. The component values depend on the oscillator

characteristics and the selected reference frequency.

Crystal oscillator

The crystal oscillator uses a 4.0 MHz crystal in series with

an 18 pF capacitor. The crystal operates in the series

resonance mode. The connection to VCC1 is preferred, but

it can also be connected to GND.

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