CND2050 Datasheet, PDF (7/9 Pages) United Monolithic Semiconductors – 0.5-11.5 GHz Divide by 4 Static Prescaler

0.5-11.5 GHz Divide by 4 prescaler
Typical bias tuning
Vdd
CND2050
Signal generator
50 Ohms load
Tansmission lines
are 50 Ohms
1 nF 1
0¦
1 nF
180°¦
Vss
4
8 _{1 nF}
1 nF
Vss
5
Spectrum
analyzer
50 Ohms load
Fig.1 : Typical measurement and RF biasing configuration with differential inputs
Vdd
Signal generator
50 Ohms load
Tansmission lines
are 50 Ohms
1 nF ₁
1 nF
Vss
4
8 1 nF
Q
F/4 RF output (50 Ohms)
Vss
1 nF
5
QB
50 Ohms
Fig.2 : RF biasing configuration with single input and ouput
Vdd
Vdd
Internal divider by 4
CK
CKB
5K
5K
Q
QB
500
500
Vss
Vss
Fig.3 : Chip block diagram
Ref. : DSCND20500257 -13-Sep.-00
7/9
Specifications subject to change without notice
Route Départementale 128 , B.P.46 - 91401 ORSAY Cedex - FRANCE
Tel.: [phone] - Fax : [phone]