STW81101AT datasheet(40/48 Pages) STMICROELECTRONICS

No. de pieza	STW81101AT

Descripción Electrónicos	Multi-band RF frequency synthesizer with integrated VCOs

PDF	48 Pages

Scroll/Zoom	100%

Fabricante Electrónico	STMICROELECTRONICS [STMicroelectronics]

Página de inicio	http://www.st.com

Logo

40 / 48 page

Application information

STW81101

40/48

Figure 30.

Evaluation board (EVB4G) matching network (MATCH_EVB4G.dsn)

For differential to single conversion, the 50 to 100

Ω Johanson balun is recommended

(3700BL15B100).

8.2

Divided by 2 output

If your application does not require a balanced to unbalanced conversion, the output

matching reduces to the simple circuit shown below (

Figure 31), which illustrates a

differential to single-ended output network in the 1.65 - 2.2GHz range

(MATCH_LC_LUMP_2G_DIFF.dsn). You can easily use this solution to provide one single-

ended output that terminates the other output at 50

Ω with a 3dB power loss.

Figure 31.

Differential/single-ended output network

(MATCH_LC_LUMP_2G_DIFF.dsn)

1pF

1.2pF

4.7pF

12pF

50 ohm

5.5nH

12pF

2:1

12pF

Vcc

OUTP

OUTN

50 ohm

22nH

10pF

50 ohm

10pF

Vcc

OUTP

OUTN

STW81101AT Datasheet(PDF) 40 Page - STMicroelectronics