znbg3118 Diodes, Inc., znbg3118 Datasheet - Page 6

• Manufacturer Part Number: znbg3118
• Description: Lna Gaas Fet Bias Controller With Polarization And Band Select
• Manufacturer: Diodes, Inc.

MIMIC local oscillators
Referring to Figure 3 wiring pin LOV to ground will force LB and HB to switch between -2.5V (disabled) and 0V (enabled). Note
that Vcc(max) should not exceed 6.0V when using this configuration.
Logic enabled PLL local oscillators
Referring to Figure 4 connecting the LOV pin to Vcc will pull the LB and HB to V
same supply voltage for the ZNBG3118 and the PLL local oscillator block, the LB and HB outputs will provide a suitable logic signal
of up to 100uA to drive the LO select pin of a PLL system.
Local Oscillator Configurations
ZNBG3118
Document number: DS32049 Rev. 1 - 2
CSUB 47nF
CNB 47nF
CSUB 47nF
CNB 47nF
RCAL 39k
RCAL 39k
Cnb1
Cnb2
Gnd
Cnb1
Cnb2
G1
Gnd
G1
Figure 3 Applications circuit for the ZNBG3118 using MIMIC local oscillators
Figure 2 Applications circuit for the ZNBG3118 using Bi-polar oscillators
ZNBG3118
ZNBG3118
330pF
CFIN
330pF
CFIN
RPOL
10k
RPOL
10k
LB
HB
Vcc
Lov
LB
HB
Vcc
Lov
RLV2
RLV1
www.diodes.com
RHB2
240k
6 of 10
RHB1
RLB1
RLB2
240k
10.6GHz Local Osc.
RHB2
RHB1
Q1
CC
CLB
when enabled and 0V when disabled. Using the
CHB
RLB1
Diodes Incorporated
A Product Line of
CHB
G1
G2
9.75GHz Local Osc.
RLB2
Local
Osc.
MMIC
Vcc
LNB Downf eed
Q2
Vcc
LNB Downf eed
CLB
ZNBG3118
© Diodes Incorporated
January 2010